Podcasts about Greenland ice sheet

To help cover the rising costs of climate impacts like extreme floods and sea level rise, New York State has enacted a climate superfund law that asks major fossil fuel companies to pay up, based on their historic sales of coal, gas and oil. We discuss how the revenues would fund climate adaptation and resilience.  Also, the Trump Administration barred government scientists from attending a key UN climate science meeting in February 2025. What's more, it seems the customary US task force including officials from the State, Energy, Commerce and Transportation departments has not attended any meetings for the underlying UN climate treaty since the beginning of the Trump Administration. And a new study shows that crevasses or cracks on the Greenland Ice Sheet are widening more rapidly than expected due to climate change, which may accelerate ice loss and global sea level rise. Learn more about your ad choices. Visit megaphone.fm/adchoices

The rise of backcountry skiing and the risk of avalanches. Also, a documentary about the melting Greenland Ice Sheet and sea level rise. Finally, the Park Winters Flower Farm in Yolo County.  Backcountry Avalanche Dangers

Das Grönlandeis bekommt immer mehr und immer tiefere Risse – und das immer schneller. Der deutsche Finanzminister Kukies möchte Öl, Gas und Wasserstoff aus den USA importieren. Und die Deutsche Umwelthilfe stellt einen Vollstreckungsantrag, damit die Bundesregierung endlich Klimaschutz macht. Das und mehr in dieser Folge KLIMANEWS am Mittwoch, den 05. Februar 2025. Für Feedback zu dieser Folge NEU NEU NEU hier entlang! Weiterlesen: tagesschau.de: Risse im grönländischen Eisschild wachsen immer schneller  Nature geoscience: Increased crevassing across accelerating Greenland Ice Sheet margins  taz.de: Erderhitzung zerstört Gletscher: Grönlandeis bekommt immer größere Risse  Tagesspiegel: Risse im ewigen Eis: Gletscherspalten beschleunigen Schwund des grönländischen Eisschilds  The Guardian: Greenland ice sheet cracking more rapidly than ever, study shows ZEIT Online: Außenhandel: Kukies will über ein neues Freihandelsabkommen mit den USA verhandeln Augsburger Allgemeine: Interview: Kukies: „Wir sollten mit den USA über ein Freihandelsabkommen sprechen“  taz.de: Grüner Wasserstoff für Deutschland: Saudi-Arabien soll bei der Transformation helfen taz.de: Klimaschutz soll erzwungen werden: Deutsche Umwelthilfe schickt den Gerichtsvollzieher Deutsche Umwelthilfe: Erstmals Vollstreckungsantrag gegen die Bundesregierung: Deutsche Umwelthilfe fordert unverzügliche Umsetzung des rechtskräftigen Klimaurteils im Landnutzungssektor  Tagesspiegel Background: Umwelthilfe stellt Vollstreckungsantrag wegen LULUCF (+) Alle Hintergründe und Infos zu unserer Vereinsgründung! Wir freuen uns über euer Feedback und Kommentare zu den Themen der Folge direkt auf Spotify, auf Instagram, Twitter oder in unserem Podcast-Telegram-Kanal. Allgemeine Anregungen oder Fragen? Schreib uns! redaktion@klimanews-podcast.de. Die täglich wichtigsten Klima-Nachrichten-Artikel findest du außerdem in unserem Hauptkanal auf Telegram. Empfehle diesen Podcast weiter! Mehr Infos findest du hier. Redaktion: Jonathan Auer (Redakteur vom Dienst), Linus Nolte Moderation: Valeria Schell Produktion und Schnitt: Simon Blieske

Die Themen in den Nachrichten: +++ Mehr Ratten in den Städten auch wegen Klimawandel +++ Meeresschaum stark mit Ewigkeitschemikalien belastet +++ Fruchtfliegen schmecken und fühlen verfaultes Obst +++**********Weiterführende Quellen zu dieser Folge:Increasing rat numbers in cities are linked to climate warming, urbanization, and human population/ Science Advances, 31.01.2025PFAS im Meeresschaum Untersuchung von per- und polyfluorierten Alkylsubstanzen (PFAS) im Meeresschaum an Nord- und Ostsee-Stränden in Deutschland/ Greenpeace, 03.02.2025Stillbirth rate trends across 25 European countries between 2010 and 2021: the contribution of maternal age and multiplicity/ European Journal of Public Health, 21.01.2025Increased crevassing across accelerating Greenland Ice Sheet margins/ Nature Geoscience, 03.02.2025Food hardness preference reveals multisensory contributions of fly larval gustatory organs in behaviour and physiology/ PLOS Biology, 30.01.2025Alle Quellen findet ihr hier.**********Ihr könnt uns auch auf diesen Kanälen folgen: TikTok auf&ab , TikTok wie_geht und Instagram .

Ali Pressel is a science communicator and environmental educator with over 20 years of experience working in secondary sciences education. Her background is in environmental sciences and she holds a Bachelor degree from Rutgers University and a Master degree from the University of Maryland. Ali has spent the past 17 years of her professional career working in schools in Northeast Florida, encouraging youth to take their learning outside of traditional classroom spaces and discover new experiences in their local community. She is a National Geographic Explorer, a Grosvenor Teacher Fellow, and a Florida Finalist for the Presidential Award of Excellence in Science Teaching. Ali has a passion for exploration and travel and loves to connect youth to place-based community citizen science through impactful learning experiences. Ali's StoryMap Collection of Expedition: https://arcg.is/0On5C80 Float Your Boat program connecting educators and students to Ocean Circulation research in the Arctic: https://www.floatboat.org/ Connect the Arctic, Public Community Platform: https://community.arcus.org/ Mapping the Greenland Ice Sheet: https://nsidc.org/grimp National Geographic MapMaker: https://www.esri.com/en-us/industries/k-12-education/mapmaker Esri K12 Education: https://www.esri.com/en-us/industries/education/overviewEsri ArcGIS Learn Gallery: https://learn.arcgis.com/en/gallery/ LinkedIn: AliPressel Instagram: pressel_explores Twitter (X): @ali_pressel Website: presselexplores.com Learn more about the ⁠Lindblad Expeditions/National Geographic Grosvenor Teacher Fellowship⁠. See Michael's book about authentic learning, ⁠Storytelling With Purpose: Digital Projects to Ignite Student Curiosity⁠. Contact show producer and Grosvenor Teacher Fellow Michael Hernandez: michael@storytelling-with-purpose.com Find out more about Producer and Host, Michael Hernandez ⁠on Linked In⁠ and on Instagram: ⁠@Changing.The.Narrative⁠

In this episode, we will explore Arctic Tipping Points, discussing, among other things, the loss of the Greenland Ice Sheet, the impacts on the Arctic ecosystem, and changes in atmospheric circulation.Our panelists include:Stefan Rahmstorf: Professor of Physics of the Oceans at the University of Potsdam, GermanyAntje Boetius: Director, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, GermanyHalldór Björnsson: Head of the Atmospheric Research Group at the Icelandic Meteorological OfficeThe discussion and following Q&A with the audience are moderated by Brynhildur Davíðsdóttir, Professor of Environment and Natural Resources at the University of Iceland.This panel originally took place the 2019 Arctic Circle Assembly.Arctic Circle is the largest network of international dialogue and cooperation on the future of the Arctic. It is an open democratic platform with participation from governments, organizations, corporations, universities, think tanks, environmental associations, Indigenous communities, concerned citizens, and others interested in the development of the Arctic and its consequences for the future of the globe. It is a nonprofit and nonpartisan organization. Learn more about Arctic Circle at www.ArcticCircle.org or contact us at secretariat@arcticcircle.orgTWITTER:@_Arctic_CircleFACEBOOK:The Arctic CircleINSTAGRAM:arctic_circle_org

Lester Kiewit speaks to Dr. Marilena Oltmanns, of the Marine Physics and Ocean Climate department at the National Oceanography Centre in the UK, about how they have carried out a study which says the melting rate of ice in Greenland can help predict how severe Europe's summer will be. This as the region experiences higher temperatures in recent years.  See omnystudio.com/listener for privacy information.

Scientists came to Greenland on an unprecedented mission to drill for rocks that would reveal the fate of the country's fast-melting ice sheet. A sudden crack in the ice threatened their experiment. Read more:The Greenland Ice Sheet contributes more to sea level rise than any other ice mass. If it disappeared, it would raise global sea levels by 24 feet, devastating coastlines home to about half the world's population. Computer simulations and modern observations alone can't precisely predict how Greenland might melt. Greenland's bedrock holds clues. It was present the last time the ice sheet melted completely and contains chemical signatures of how that melt unfolded. It could help scientists predict how drastically Greenland might change in the face of today's rising temperatures. But scientists have less material from under the ice sheet than they do from the surface of the moon. So this spring, a team from Columbia University's Lamont-Doherty Earth Observatory made an unprecedented effort to drill through more than 1,600 feet of ice and uncover the bedrock below.Climate reporter Sarah Kaplan was there too. She arrived just after a thin crack appeared in the ice around the drill, threatening the project and its ability to unearth the future.

In the second hour, Kevin Ellis is joined by our Friday regular guest, National News Correspondent Bob Ney, and a reporter from Seven Days. This week, reporter Ken Picard tells Kevin about his recent story: UVM Scientists Unearth Bad News for Our Climate Future Beneath the Greenland Ice Sheet. Then, Kevin talks with Ella Butter, an American social worker and lawyer currently living in Israel, about her experiences in the region. 

Dr. Alison Banwell is a Glaciologist and Research Scientist in the Cooperative Institute for Research in Environmental Sciences (CIRES), part of the University of Colorado Boulder. She studies glaciers in the Arctic and Antarctica and glacial lakes that form from glacial ice melt. She has led many field expeditions in Antarctica and has also conducted fieldwork on the Greenland Ice Sheet, Svalbard and the Himalaya. She has a PhD in Polar Studies from the University of Cambridge. What do we talk about in this episode?What is a glaciologist or glacier scientist and how she got interested in this field.How climate change is affecting glaciers throughout the world and how studying glaciers can help understand climate change.What her field work experiences in Antarctica and the Arctic.What it's like to be a glaciologist when you hate the cold!How does one get to Antarctica for work (it's a really long commute)?Penguins in Antarctica...they're so cool!Music used in the podcast: Higher Up, Silverman Sound StudioYou can support my podcast on Patreon here: https://patreon.com/user?u=72701887ResourcesContact Dr. Banwell: email: alison.banwell@colorado.edu; Instagram & Twitter: @alibanwellInfo on Dr. Alison Banwell and links to her publications: https://cires.colorado.edu/researcher/alison-banwell3.2% of all climbers are women. Longyearbyen is the administrative centre of Svalbard, is a tiny Norwegian metropolis with 2,400 residents from almost 53 different countries. Longyearbyen is the gateway to the nature-based experiences and the starting point for most adventures in Svalbard. (https://en.visitsvalbard.com/visitor-information/destinations/longyearbyen)As powerful predators, polar bears pose a major risk to human life and property. Throughout the polar bear's range, attacks on humans and property continue to rise. In recent years, more than 20 direct attacks on humans have been reported within the polar bear's range. (WWF)Leopard seals are the only seals known to regularly hunt and kill warm-blooded prey, including other seals. Although rare, there are a few records of adult leopard seals attacking humans. (www.doc.govt.nz)A glacier is an accumulation of ice and snow that slowly flows over land. At higher elevations, more snow typically falls than melts, adding to its mass. (https://nsidc.org/learn/parts-cryosphere/glaciers)Mer de Glace, (French: “Sea of Ice”) one of the longest glaciers in the Alps, extending for 3.5 miles (5.6 km) on the northern side of Mont Blanc near Chamonix, France. (Britannica)McMurdo Station is located on volcanic rock marking  the southernmost solid ground accessible by ship, it is the gateway of most all scientific, private, and touristic jaunts into the Antarctic. (https://www.atlasobscura.com/places/mcmurdo-station)The Drake Passage is the body of water between South America's Cape Horn, Chile, Argentina and the South Shetland Islands of Antarctica. It connects the southwestern part of the Atlantic Ocean (Scotia Sea) with the southeastern part of the Pacific Ocean and extends into the Southern Ocean. The passage is named after the 16th-century English explorer and privateer Sir Francis Drake. The Drake Passage is considered one of the most treacherous voyages for ships to make. Currents at its latitude meet no resistance from any landmass, and waves top 40 feet (12 m), hence its reputation as "the most powerful convergence of seas". (Wikipedia)

This podcast is a commentary and does not contain any copyrighted material of the reference source. We strongly recommend accessing/buying the reference source at the same time. ■Reference Source https://www.ted.com/talks/kristin_poinar_what_s_hidden_under_the_greenland_ice_sheet ■Post on this topic (You can get FREE learning materials!) https://englist.me/95-academic-words-reference-from-kristin-poinar-whats-hidden-under-the-greenland-ice-sheet-ted-talk/ ■Youtube Video https://youtu.be/yJ1W9Dxo0ts (All Words) https://youtu.be/gXtCpWdQAis (Advanced Words) https://youtu.be/oL111f__RQg (Quick Look) ■Top Page for Further Materials https://englist.me/ ■SNS (Please follow!)

Record-breaking global temperatures are accelerating Greenland ice melt at an alarming rate. Professor of glaciology Alun Hubbard has witnessed the melt first hand. He tells us how the ice sheet is being destabilised and what this could mean on a human level. Also, how safe are Japanese plans to dispose of nuclear waste from the Fukushima accident? We get reassurance from molecular pathology expert, Professor Gerry Thomas. And last week was a big one for cosmology news. We catch up on science behind the gravitational hum that permeates the Universe with astrophysicist with Dr Chiara Mingarelli. And we hear about the traces of ghostly neutrinos within our Galaxy from the principal investigator of the world's largest neutrino detector, Professor Francis Halzen. Presenter: Roland Pease Producer: Ella Hubber (Photo: Meltwater forming on top of the Russell Glacier, Greenland)

The huge ice sheet covering Greenland is pivotal to the threat of rising sea levels, but it presents some difficulties for scientists.

The huge ice sheet covering Greenland is pivotal to the threat of rising sea levels, but it presents some difficulties for scientists.

Kathleen from Plenty of Sunshine Travel met with Cara from Quark Expeditions for this week's cruise chat. . A sailing we looked at starts in Svalbard, Greenland and the Canadian Arctic. . I love that the Aquamarine vessel has two helicopters for the guests to see and explore, and you can walk on an ice sheet! That is a memory that will be with you forever!! . South Greenland's Viking History is something that you will learn about while on your cruise. Greenland Camp Experience is where you will camp overnight in Greenland's heart. You get to experience Greenland, as few do, and you will be camping with a local chef. You will be fully emersed in the local history. Greenland is such a large country and so diverse it will take a few trips to really get to explore this gorgeous country. Greenland Adventure Explore by Sea, Land and Air - Experience an in-depth exploration of Southern Greenland from land, sea and air (developed in partnership with local communities exclusive to Quark Expeditions) . Enjoy included helicopter excursions for a unique perspective of this rarely visited region. Participate in optional helicopter adventure options such as Alpine Kayaking, Greenland Camp Experience and Mountain Biking On this 9-day cruise. You will visit: Narsarsuag, Greenland Ice Sheet, Tasermiut Fiord, Lindenow Fiord.Greenland Northern Lights Greenland Explorer DEPARTURE DATES Sept 14 - 24, 2024, Sept 22 - Oct 2, 2024, Exclusively on Ultramarine Quark. Sail and Soar the Alpine Arctic Experience Greenlandic culture by exploring with local partners. Explore remote ridges and peaks during our Exclusive Heli Landing activity, which is included in the trip. . Visit the Kujataa UNESCO World Heritage to learn about the intersection of Inuit and Viking cultures. INCLUDED EXPERIENCES: Exclusive Heli-Landing, Ice Sheet Experience, Paddle Excursion, Zodiac Cruising, Hiking, Polar Plunge ADVENTURE OPTIONS Greenland Camp Experience, Heli-Hiking, Tundra to Table. Greenland Explorer Sail and Soar the Alpine ArcticExperience Greenlandic culture by exploring with local partners. Explore remote ridges and peaks during our Exclusive Heli Landingactivity, which is included in the trip Visit the Kujataa UNESCO World Heritage to learn about the intersection of Inuit and Viking cultures Marvel at the Northern Lights sparkling across the skies of South Greenland's serene fiords 11 DAYS 2024 Departure Dates Sept 14 - 24, 2024 Sept 22 - Oct 2, 2024 . Gems of West GreenlandFjords, Icebergs, and Culture - Immerse yourself along the dramatic coast of West Greenland, exploring deep into fjords and stunning islands - This trip features the best sites of West Greenland. It delivers an in-depth experience in just 12 days. You'll have opportunities to visit towns such as Sisimiut and Uummannag, rich in culture12 DAYS2024 Departure Dates July 14 - 25, 2024. Under the Northern Lights Exploring Iceland and East Greenland Cruise along Iceland's mountainous Vestfjords and Greenland's remote northeast coast - Discover diverse and dramatically rugged landscapes rich in iconic arctic wildlife - Experience Inuit culture firsthand at Ittoqgortoormit, visit ancient Thule sites steeped in history, and marvel at the majesty of massive icebergs and towering bird cliffs 14 DAYS Sept 20 - Oct 3, 2024. If you want to learn more about Quark Expeditions or any other cruise lines I have met with. . Please get in touch with me at info@PlentyofSunshineTravel.com. You can also fill out this simple form https://bit.ly/3mxFUNd, and I will get back to you. . Subscribe to our channel and hit the notification bell to ensure you don't miss any upcoming cruise videos . If you want to see the images on this week's episode, click HERE . Search #PlentyofSunshineTravel on Facebook or Instagram to see our posts. . . . #quarkexpeditions #quark #travelagent #CruiseSpecialist #Cruise #CruiseGuru #TravelAgent #canadiantravelagent

-The weather is baking large swaths of China -Dangerous late-summer heat wave in Western USA -Massachusetts town bans all outdoor water use -Greenland Ice Sheet is melting -Severe storms swept through west and south -Pakistan monster monsoon of the decade -Thousands of fish were killed in the Polish River Oder. -Arizona "Winter Salad Bowl” Capital feels the drought -Europe using Fog collectors for watering

TRUMP IS REALLY, REALLY, SCREWED A BLOCK (1:50) SPECIAL COMMENT: A Justice Department photo shows at least five bright yellow TOP SECRET/SCI files strewn on a gaudy carpet. Some pictures are worth a thousand words - this mind-blowing one looks like it's worth 10 to 20 in a Supermax for Trump. The DOJ answer to Trump's ill-conceived "Special Master" suit is released early Wednesday morning and in it, Trump destroys his own defense that he "declassified" all the documents, as government agents swear Trump did NOT assert Executive Privilege over any of the documents he turned over in June, nor did he claim any of them had been declassified. There are countless lesser Trump self-destructions in the DOJ filing that add up to Obstruction of Justice, Concealing Classified Documents, and Falsely Sworn Documents - and all this is BEFORE WE EVEN KNOW FOR SURE WHAT'S IN THE DOCUMENTS. (7:20) And this may not even be the worst news of the day for Trump. President Biden is clearly on offense, slamming Lindsey Graham for his "riots in the streets" promise. (8:06) Graham actually makes it worse: he goes back on Fox and flatly lies, and denies he said what he said on Fox two nights earlier (10:33) Biden's willingness to call out Republicans normalizes the terms he uses like "semi-fascism" and builds momentum for others to use them on a daily basis (14:20) To paraphrase "The Manchurian Candidate": "Are they saying ARE there any fascists in the Republican Party? Of course not! They're saying HOW MANY fascists are there in the Republican Party!" (14:20) Trump meanwhile goes full QAnon, posting direct messages from the imaginary figure and all but calling for another coup to be led by people who believe prophesy tells them to participate (17:15) But overarching all of it is that one photo: glowing TOP SECRET/SCI files on a carpet like so many baseball cards. B BLOCK (19:42) EVERY DOG HAS ITS DAY: Hadley (20:57) POSTSCRIPTS TO THE NEWS: Gorbachev dies just before Putin finishes undoing all his work. How will your town look under 10 inches of melted glacial water? How come the dirty words on the GOP headquarters were carefully sprayed AROUND the Republican logo? (23:32) IN SPORTS: Sweden warns its players: don't go to Russia. Why are we letting Russians play in the NHL? And sports blogger Clay Travis actually compares vaccine-refuseniks Aaron Rodgers, Kyrie Irving and Novak Djokovic to Muhammad Ali's refusal to be inducted into the military: "Covid is our modern era Vietnam," says the dumbest man on the planet (29:47) THE WORST PERSONS IN THE WORLD: Ted Cruz, Joe Rogan, and Herschel Walker - proudly insisting "My bike is not bent" compete for the honors. C BLOCK (34:43) THINGS I PROMISED NOT TO TELL: It's the birthday of the late Daniel Schorr, the last man hired by Ed Murrow at CBS News, a proud member of Richard Nixon's enemies list, and my colleague at CNN 40 years ago. The best story? The day I had to delay his interview with the CIA chief for breaking... College Football Rankings News!See omnystudio.com/listener for privacy information.

The heat waves of the future could produce deadly “wet bulb temperatures” that would kill millions of people by sheer heat exhaustion. How will governments, citizens and international organizations react, if a heat wave killed 20 million people in India? That is the premise of the novel “The Ministry for the Future” – a novel that mixes science fiction and environmentalism.The guest on the premiere episode of the fifth season of Planet A is renowned science fiction writer Kim Stanley Robinson. In “The Ministry for the Future”, he writes about a dystopian, near future where the devastating consequences of climate change are ravaging the world. The book describes how governments and philanthropists try to use geoengineering, like spraying sulphur dioxide into the atmosphere or capturing meltwater of The Greenland Ice Sheet to stem climate change. While his book “The Ministry for the Future” invites readers into a world where nothing is unthinkable and everything is possible, the solutions he describes are not all science fiction.And in this episode of Planet A he discusses the promise and perils of geoengineering, the COP-process, the current energy crisis and whether we need nuclear energy in the global green transition with host Minister Dan Jørgensen.

After Bryan's earlier chat with Lars Ostenfeld, about his film INTO THE ICE, Geoff Henderson a wind turbine engineer and "amateur" climate scientist got in touch. 

Sometimes having good talks on climate change requires a good listener.  And we have one of the best in Professor Jason Box on the 5th episode of Planet A's fourth season where Dan Jørgensen talks with the esteemed professor of glaciology about the state of the Greenland Ice Sheet and what it can tells us about the changing climate.Jason Box has been co-author of the latest three assessment reports from IPCC and co-wrote the decisive UN report ‘Climate Change 2007' for which the team was co-awarded the Nobel Peace prize the same year. He has also participated in more than 30 expeditions in Greenland to study climate changes and monitor the development of the ice sheet. So what does the ice tell us? Listen for yourself in this episode of Planet A.

NIGHT AIR: SHIFTING SANDS Jeff Diamanti – Phosphate Futures: Body, Territory, Mutiny 22 April 2022 – OT301, Amsterdam, The Netherlands In his talk ‘Phosphate Futures: Body, Territory, Mutiny', Jeff Diamanti unfolds the figurative force of elemental phosphorus across four fields on Earth: Amsterdam, the Netherlands; Port of Elizabeth, South Africa; Laâyoune, the Sahrawi Arab Democratic Republic; and the moraine of the Greenland Ice Sheet. Jeff Diamanti is Assistant Professor of Environmental Humanities at the University of Amsterdam. His book ‘Climate and Capital in the Age of Petroleum' (2021) tracks the political and media ecology of fossil fuels across the extractive and logistical spaces that connect remote territories. His new research, Bloom Ecologies, is about phytoplankton, phosphorus, and the spectre of hypoxia. He organises a residency called FieldARTS together with Fred Carter. Digging into the relationship between sand, the history of pollution, and economy, Night Air: Shifting Sands featured an audiovisual work by Félix Blume, talks from scholars Jeff Diamanti and Michaela Büsse, as well as films from Enar de Dios Rodríguez, Maika Garnica, Ans Mertens and Yanjin Wu. In the latter part of the evening, artist Farzané delivered a performance of ‘LÖSS', before DJs Femi, TAAHLIAH, Snufkin, and Europa took over for the night. NIGHT AIR Night Air is a series of Sonic Acts events that aim to make pollution visible by bringing forth the various side-effects of modernity: from exploitation of people and resources to perpetual inequalities brought about by the destruction of the environment and common land – in other words, capitalist practices that shape both our environment and human-nonhuman relations. More information about Shifting Sands and its participants can be found at sonicacts.com/discover/night-air-shifting-sands CREDITS Curation & production: Sonic Acts Design: Toni Brell https://tonibrell.de Video editing: Marie Debarbieux https://mariedebarbieux.wixsite.com Sound mastering: Poul Sven de Haan http://faboem.nl

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Thanks to seismic waves, we can now see underneath the massive ice sheet that covers Greenland. Through imaging of these waves, the sub-glacial terrain was mapped to understand which areas are susceptible to more rapid flow and melting. This is a cool topic for me because it's related to research I did on flow dynamics of the ice sheet! Back then, I used a less-accurate dataset of the ground elevation under the ice, so this is incredible because it could provide me with better results when I eventually finish the project! Source material: Jones, G.A., Ferreira, A.M.G., Kulessa, B. et al. Uppermost crustal structure regulates the flow of the Greenland Ice Sheet. Nat Commun 12, 7307 (2021). https://www.nature.com/articles/s41467-021-27537-5 Download the Callin app for iOS and Android to listen to this podcast live, call in, and more! Also available at callin.com

In 1959, the United States built an unusual military base under the surface of the Greenland ice Sheet. Camp Century was a hub for scientific research, but it also doubled as a top-secret site for testing the feasibility of deploying nuclear missiles from the Arctic. When Camp Century was decommissioned in 1967, its infrastructure and waste were abandoned under the assumption they would be forever entombed beneath the colossal sheet of ice. But climate change has warmed the Arctic more than any other region on Earth, and parts of the Greenland Ice Sheet are melting faster than snow can accumulate. What will happen in the coming decades if the melting ice exposes the biological, chemical, and radioactive waste left behind at Camp Century?As part of our Staff Picks series while Third Pod is on break, University of Colorado Boulder glaciologist Mike MacFerrin recounts Camp Century's intriguing history and its role in the Cold War. He discusses the potential hazard Camp Century's waste poses to the environment and surrounding communities and examines what, if anything, should be done about it now.This episode was produced and mixed by Lauren Lipuma and Shane M Hanlon.

The Earth has lost 28-Trillion tones of ice since the mid-1900's.  Is the Earth warming at a fast rate?  Join Host David Denault as he investigates the melting of Greenland Ice Sheet.  

A sample taken beneath Greenland's mile-thick ice sheet reveals much about the area's past million years of history, and provides a warning for its future.

Given the recent California election experience, how long before the GOP starts talking about compassionate conservatism again? Why isn't the media talking about the real reason Gen. Milley had to go outside normal policies to prevent Trump from starting a nuclear war? Dr. Michael Mann joins Thom to explain that climate change is coming on fast while Americans are working on it slowly. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Episode 30: In this episode, host Angie Gust talks about Dr. Bruce Lipton's work with stem cells.  He showed that the stem cells changed with their environment. Dr. Lipton says that if you want to change your life, you have to change your perceptions.  This goes along with the research showing that people with more optimism have better health and better outcomes after surgery.  Turning to the environment, a recent UNICEF report warned that almost half the world's 2.2 billion children are already at “extremely high risk” because of climate change. Greta Thunberg and other youth climate leaders wrote in a recent article, "The fundamental goal of the adults in any society is to protect their young and do everything they can to leave a better world than the one they inherited." References Brummett BH, Helms MJ, Dahlstrom WG, Siegler IC. Prediction of all-cause mortality by the Minnesota Multiphasic Personality Inventory Optimism-Pessimism Scale scores: study of a college sample during a 40-year follow-up period. Mayo Clin Proc. 2006 Dec;81(12):1541-4. doi: 10.4065/81.12.1541. PMID: 17165632. Carrington, D. Aug 19, 2021 A billion children at ‘extreme risk' from climate impacts – Unicef.  The Guardian. https://www.theguardian.com/environment/2021/aug/20/a-billion-children-at-extreme-risk-from-climate-impacts-unicef Gustafson C. 2017. Bruce Lipton, PhD: The Jump From Cell Culture to Consciousness. Integrative medicine (Encinitas, Calif.), 16(6), 44–50. IPCC. Aug 9, 2021. Climate change widespread, rapid and intensifying. https://www.ipcc.ch/2021/08/09/ar6-wg1-20210809-pr/ Braun, S. Aug 19, 2021. Mushrooms: 4 uses that benefit the environment. Made for Minds. https://www.dw.com/en/mushrooms-4-uses-that-benefit-the-environment/a-58873874 Patel, K. Aug 19, 2021. Rain falls at the summit of Greenland Ice Sheet for first time on record. The Washington Post. https://www.washingtonpost.com/weather/2021/08/19/greenland-melt-august-summit-rain/?utm_campaign=Carbon%20Brief%20Daily%20Briefing&utm_content=20210820&utm_medium=email&utm_source=Revue%20Daily Plumer, B. Sept 2, 2021. New Yorkers Got Record Rain, and a Warning: Storms Are Packing More Punch The New York Times.https://www.nytimes.com/2021/09/02/climate/new-york-rain-climate-change.html?utm_campaign=Carbon%20Brief%20Weekly%20Briefing&utm_content=20210903&utm_medium=email&utm_source=Revue%20Weekly Stinnett, N. Apr 22, 2021. So You're Serious About Climate Change: Vote In Your Local Elections. Cognoscenti. https://www.wbur.org/cognoscenti/2021/04/22/mayors-climate-policy-earth-day-2021-elections-nathaniel-stinnett Thunberg, G et al. Aug 19 This is the world being left to us by adults. NY Times. https://www.nytimes.com/2021/08/19/opinion/climate-un-report-greta-thunberg.html

On the 20th anniversary of the 11 September attacks on the United States, we reflect on the role that Sport played, and continues to play, in helping to rebuild the lives of those affected and in remembering those who died. Mary Wittenberg was assistant race director for the New York Marathon in 2001. Going ahead just a few weeks after the attacks, it was the city's biggest mass gathering since the losses suffered on September 11. US Sport's big team franchises had already resumed playing but, says Mary, this was the first chance for ordinary New Yorkers to do something for their family and friends; either in remembrance or in solidarity. We also look at the lasting legacy of Mark Bingham, who died over-powering those who had hijacked United Airlines Flight 93. The Bingham Cup, set up in his honour, is one of the premier International Gay Rugby competitions. Karl Ainscough-Gates, the chair of International Gay Rugby, joins us to remember Mark's sacrifice and celebrate how he continues to change lives to this day. Plus, The Washington Post's Jerry Brewer weighs the question of whether the relationship between sport and patriotism in the United States, which grew as a result of 9/11 and the subsequent ‘War on Terror', has become – in the 20 years since – something toxic. We are also joined by … Endurance Swimmer, Lewis Pugh, who has just completed a 7.8km swim in Greenland's Ilulissat Icefjord. The distance was covered in 14 sessions over 12 days. He did it to highlight the rapid melting of the Greenland Ice Sheet as a result of climate change. The mouth of the Ilulissat Icefjord measures 7.8 km, and is fed by the world's fastest-moving glacier. Tokyo Paralympics Wheelchair Basketball gold-medallist, Mariska Beijer, discusses how victory for the Dutch team in her event can help to grow Para Sport in the Netherlands… and tells us about having afternoon tea with the country's King and Princess! Piers Edwards, from BBC Africa Sport, tells us about footballer Jean-Pierre Adams, who died this week, having slipped into a coma in 1982 when he went into hospital for a routine operation. Piers, as a younger reporter, spent time with Adams' family and learned about how they managed every day, knowing that Jean-Pierre would never wake up. We hear what the now double Olympic marathon champion, Eliud Kipchoge, wants to achieve with his new foundation. Kenya's world record holder has been speaking to Ed Harry about building libraries and planting forests. (Photo: New York City night. Credit: Getty Images)

Greenland's ice sheets contain enough water in ice to raise sea levels by about 24 feet. Josh Willis, lead scientist on NASA's Oceans Melting Greenland mission, discusses the ice's instability in the face of global warming. And, terrorist group ISIS-K claimed responsibility for a suicide bombing that killed more than 170 people last week. Andrew Mines of George Washington University's program on extremism talks about the group and its motives.

In this episode we learn about Arctic Tipping Points from three esteemed experts in the field: Dr. Stephan Rahmstorf, Professor of Physics of the Ocean at the University of Potsdam, Dr. Antje Boetius, Director of the Alfred Wegener Institute and Halldór Björnsson, Leader of Atmospheric Research Group at the Icelandic Meteorological Office. They will discuss the effects of Arctic Tipping Points such as the loss of the Greenland Ice Sheet, the Arctic Ecosystem and Atmospheric Circulation. This Session originally took place at the 2019 Arctic Circle Assembly and also includes a Q&A with the audience, moderated by Brynhildur Davíðsdóttir, Professor of Environment and Natural Resources at the University of Iceland.

While interviewing Dr. Laurence C. Smith for an episode in May about his new book, "Rivers of Power, we went down a rabbit hole of talking about Supraglacial Rivers.  This short conversation gets the basics of these unique rivers that start on the top of the glaciers and is a more candid expression from Dr. Smith about this topic that he researches at great depth.  Supraglacial rivers are constantly moving their locations, changing flows and are unique among rivers as they carry no sediment.   GUESTDr. Laurence C. Smith RESEARCHNorthern Change Research LaboratorySupraglacial River Forcing of Subglacial Water Storage and Diurnal Ice Sheet Motion BOOKSRivers of PowerThe World in 2050 VIDEOSWhat a Glacial River Reveals About the Greenland Ice Sheet ARTICLEShttp://www.newyorker.com/magazine/2016/10/24/greenland-is-meltinghttp://www.latimes.com/science/sciencenow/la-sci-sn-catastrophic-greenland-melt-20150112-story.htmlhttps://www.nytimes.com/interactive/2017/12/05/climate/greenland-ice-melting.htmlhttp://www.nytimes.com/interactive/2015/10/27/world/greenland-is-melting-away.html THE RIVER RADIUSPrevious episode with Dr. Laurence C. Smith, "The Book:  Rivers of Power" on our Website, Apple Podcasts and Spotify.   WebsiteEmailInstagramFacebook

In April, President Biden held the first Leaders Summit on Climate which saw a number of countries commit to more ambitious reduction targets. Research intern Matthew Page speaks to Associate Professor Matt McDonald from the University of Queensland about Australia’s hesitancy to set a target date for emission reductions, the impacts of climate on Australia’s national security and whether investment in hydrogen and carbon-capture and storage technologies will significantly reduce Australia’s carbon emissions. The financial and social impacts of Covid-19 and the increased time people are spending online have been described as factors which may make people more vulnerable to radicalisation. Dr Teagan Westendorf speaks to Nafees Hamid, Research Fellow at Artis International, about pathways to radicalisation, including the significance of sacred values, and the importance of community in preventing radicalisation. Brendan Nicholson is joined by Katherine Stewart from the International Committee of the Red Cross for a conversation about her experiences working in the Australian Defence Force and the ICRC. They discuss Kath’s experiences working in Bougainville and Iraq and most recently, in Israel and the Occupied Territories, and the importance of neutrality in the Red Cross. Mentioned in this episode: - https://theconversation.com/the-neuroscience-of-terrorism-how-we-convinced-a-group-of-radicals-to-let-us-scan-their-brains-114855 Guests (in order of appearance): Matthew Page: https://www.aspi.org.au/bio/matthew-page Associate Professor Matt McDonald: http://researchers.uq.edu.au/researcher/634 Dr Teagan Westendorf: https://www.aspi.org.au/bio/teagan-westendorf Nafees Hamid: https://artisinternational.org/nafis-hamid/ Brendan Nicholson: https://www.aspi.org.au/bio/brendan-nicholson Background music: Stylish Groove by Scott Holmes Music via the Free Music Archive: https://freemusicarchive.org/music/Scott_Holmes/media-music-mix/stylish-groove Image: "Greenland Ice Sheet" via WikiMedia: https://upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Greenland_Ice_Sheet.jpg/2560px-Greenland_Ice_Sheet.jpg

How do we put the significant changes of the Earth’s atmosphere we’re experiencing now due to anthropogenic or human caused CO2 into context relative to the natural variability our planet has experienced? Rates of mass loss similar to now occurred in the early Holocene Period (~11,500 years ago) but simulations predict the 21st century will far exceed that rate of loss. If we deviate from the business as usual model, commit to low carbon emissions, can we mitigate or reverse sea level rise due to a melting Greenland Ice Sheet?Assistant Scientist at UCI Department of Earth System Science Joshua Cuzzone joins the WBI show to discuss Rate of mass loss from the Greenland Ice Sheet will exceed Holocene values this century. He co-authored this recently published paper in Nature alongside an interdisciplinary team of paleoclimatologists, glacial geologists and geochemists. Check out this episode to learn about the 5 years they spent examining these questions. We also take an in depth look at the high-resolution Ice Sheet and Sea-level system Model (ISSM) used for simulating rates of GIS mass change from 12,000 years ago to AD 2100.Host: J. Khadijah AbdurahmanMusic: Drew LewisShow Notes: Chernobyl: data wars and disaster politicsRecommendations:The Two-Mile Time Machine: Ice Cores, Abrupt Climate Change, and Our Future by Richard AlleyPlease rate, review and write us at WeBeImagining@gmail.com

V dnešnom podcaste budeme hovoriť o tom, ako rýchlo sa topí ľad v Grónsku (veľmi), o potenciálnych obývateľných planétach a o tom, že bola udelená Nobelovka za CRISPR. Pseudocast 473 na YouTube Zdroje Greenland's ice sheet is melting as fast as at any time in the last 12,000 years, study showsRate of mass loss from the Greenland Ice Sheet will exceed Holocene values this centuryIn Search for a Planet Better than Earth: Top Contenders for a Superhabitable WorldPioneers of revolutionary CRISPR gene editing win chemistry NobelA Programmable Dual-RNA–Guided DNA Endonuclease in Adaptive Bacterial Immunity

The ice sheets of Greenland are melting at a fast rate not seen in this century before according to lead scientists. With global warming and climate change happening, extreme weather events will be the new normal and humans will have to make adjustments to their lifestyles accordingly. --- This episode is sponsored by · Anchor: The easiest way to make a podcast. https://anchor.fm/app

William Nordhaus explains the economic consequences of Greenland ice sheet melt.

This is my first episode on my podcast channel in which I will talk Climate Change and Global Warming and how it is affecting Humanity. Suggestions are welcome: yashnegi4920@outlook.com Follow me on Twitter for more climate change news and what is happening with Arctic and Greenland Ice Sheet. You won't be disappointed.Twitter ID: https://twitter.com/realyashnegiSupport the show (https://paypal.me/yashnegi27?locale.x=en_GB)

A look at the future of the Greenland Ice Sheet as well as a dedication to the memory of Dr. Konrad Steffen

RC reviews evidence for nanodiamonds in the Oklahoma Panhandle, with a hint at a more recent and local impact event, and in the eastern margin of the Greenland Ice Sheet. Can nanodiamonds be produced terrestrially? A chart of the Volcanic Explosivity Index leads RC to talk about ash from Mount St. Helens that has been found and dated within the Scablands floods’ rhythmites, and how those were the basis for the theories of repeated Lake Missoula dam-break outburst floods.  Then we get into the just-released paper that links the micro-proxies to volcanic eruptions and credits coincident endogenic processes for the Younger Dryas cooling episode, and because the authors do nothing to negate or refute the evidence for a YDB impact, they have a long way to go to prove their case and extrapolate the evidence from Hall’s Cave to the entire planet. CBD RECOMMENDED - Listen to Randall’s experience with “CBD from the gods” after the mid-break at 41:11. They have some special deals going on right now, and in addition, for the Kosmographia audience - you can also get FREE shipping on your order!  Use code: “RCshipsFREE” (not case sensitive) when you check out at https://www.cbdfromthegods.com Support Randall Carlson's efforts to discover and share pivotal paradigm-shifting information! Improve the quality of the podcast and future videos. Allow him more time for his research into the many scientific journals, books, and his expeditions into the field, as he continues to decipher the clues that explain the mysteries of our past, and prepare us for the future... Donate to this work thru his Patreon subscription/membership site, and receive special perks: https://patreon.com/RandallCarlson Or make a one-time donation thru PayPal, credit/debit card or other account here: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=8YVDREQ9SMKL6&source=url Podcast: http://kosmographia.com (coming very soon: RandallCarlson.com) Branch out to all things Randall at: http://RandallCarlson.net Scablands Sept/Oct REXpedition with Grimerica: http://ContactattheCabin.com/Carlson Podcast crew email: Kosmographia1618@gmail.com Info on upcoming trips with Randall and the crew: TOURS@RandallCarlson.com Small class lectures "Cosmography 101" from '06-'09 on Brad's original channel: https://youtube.com/geocosmicrex     Full listing of scientific papers about the Younger Dryas Impact Hypothesis: https://cosmictusk.com  Kosmographia logo and design animation by Brothers of the Serpent. Check out their podcast: http://www.BrothersoftheSerpent.com/ Theme “Deos” and bumper music by Fifty Dollar Dynasty: http://www.FiftyDollarDynasty.net/ Video recording, editing and publishing by Bradley Young with YSI Productions LLC (copyrights), with audio mastered by Kyle Allen.   LINKS:  Halls Cave Paper: https://advances.sciencemag.org/content/6/31/eaax8587/tab-pdf  Article in Phys.org: https://phys.org/news/2020-07-texas-cave-sediment-upends-meteorite.html Hall’s Cave Image credit: Michael Waters, Texas A&M University Bull Creek site article: https://tulsaworld.com/communities/skiatook/news/panhandle-archaeological-site-could-hold-evidence-of-prehistoric-comet-explosion/article_da1d0ea0-80ea-5a2e-8fa6-5b438afebf0e.html CBD FROM THE GODS LINK:  http://www.cbdfromthegods.com COUPON CODE: RCshipsFREE

This week, author and climate activist Jamie Margolin joins the show to talk about her new book, Youth to Power. We discuss how she found her voice in activism, how the youth movement is help powering climate action, what it's been like dealing with politicians, and activism in the COVID era.   Then, Dr. Michalea King joins the show to discuss being the lead author on a new study on the Greenland Ice Sheet. What does it mean if the ice sheet has hit the "point of no return"? We dig into the science.  Co-hosts Ty Benefiel and Brock Benefiel also discuss wild temperatures in Death Valley and a new study on air pollution.  As always, follow us @climatepod on Twitter and email us at theclimatepod@gmail.com. Our music is "Gotta Get Up" by The Passion Hifi, check out his music at thepassionhifi.com. Rate, review and subscribe to this podcast on iTunes, Spotify, Stitcher, and more! Subscribe to our new YouTube channel! Further Reading: Buy Youth to Power by Jamie Margolin World Economic Forum: 2020 set to be first or second warmest year on record Excessive Heat Awareness   Future of Human Climate Niche Ditching fossil fuels would pay for itself through clean air alone  By David Roberts Death Valley reaches 130 degrees, hottest temperature in U.S. in at least 107 years by Jeff Berardelli

In this episode Gloria Dickie, Canada talks to Amy Martin about the Greenland Ice sheet that is slowly melting. The Greenland Ice sheet has had a big impact on Amy who have had the rare opportunity to visit the ice sheet some years ago, and the Greenland Ice sheet will have an even bigger impact to people around the world if it continues to melt. Listen and join our arctic conversation with #ArcticConversation!

Eco Money is a new series with Rachel Kelly about the latest from sustainable movers and shakers. In this edition, she speaks to Marco Tedesco, Research Professor, Columbia University, Lamont-Doherty Earth Observatory about the Greenland ice sheet shrinking by a record amount, pushing up sea levels.

Hot Science in Cold Ice: Exploring the Greenland ice sheet for signs of change with Mike MacFerin

The Greenland ice sheet is melting due to global climate change, and this melting may become the biggest single contributor to rising sea levels in this century. The ice sheet is enormous. It's seven times bigger than the United Kingdom and almost two miles thick in places.

COVID-19: Why reacting early and aggressively is the key to avoiding crisis; How the Greenland Ice Sheet is melting from the bottom up; Squat, don’t sit: The way we are sedentary could make a big difference in our health; SmartICE: Supporting Inuit knowledge of the landscape with technology.

  In this fourth lightning interview of the third season, Jessica Mejia, a Ph.D. candidate in the USF School of Geosciences discusses her research of moulins (roughly circular, vertical or nearly vertical well-like shafts within a glacier) to understand the connection between glacier hydrology and ice motion of the Greenland Ice Sheet.   More about Jessica can be found here: https://works.bepress.com/jessica-mejia/ http://jessicamejia.myweb.usf.edu/   Calling: Earth is a production of the USF Libraries in cooperation with the USF School of Geosciences. Questions, comments, and any other feedback can be directed to callingearth@usf.edu.

In roughly the same manner as the Greenland Ice Sheet, the London mayoral election is hotting up. Ex-Tory Rory Stewart has entered the race as an independent and is chatting about it to anyone who goes near him. Continuing Tory Assembly Member Shaun Bailey gave a speech to the party's conference, and is refusing to chat to pretty much anyone. (No change there: during the selection race last year, he was the only shortlisted candidate to refuse to talk to us, forcing us to replace him with some music.)To discuss what all this means for the race, and whether it threatens Labour incumbent Sadiq Khan in next May's contest, I'm joined by New Statesman political correspondent Patrick Maguire, who, it's fair to say, has views. Also this week, the sort of Liverpudlian Patrick and sort of Londoner myself debate a question for the ages: which is better, Birmingham or Manchester?Skylines is the podcast from the New Statesman’s cities site, CityMetric. It’s hosted by Jonn Elledge and produced by Nick Hilton. See acast.com/privacy for privacy and opt-out information.

Geophysicists might expect to face earthquakes or volcanoes in their work. But Kate Selway has to factor hungry Polar bears into her research.

Over the past decade Ireland has endured some extreme weather cycles from heavy snow to summer heat waves. There is an argument that these events are influenced by what's happening with the Greenland Ice Sheet. Each year the ice sheet is covered in new snow but recently more ice is melting than snow falling. Liam O'Brien visits to learn more.(2018)

In 1959, the United States built an unusual military base under the surface of the Greenland ice Sheet. Camp Century was a hub for scientific research, but it also doubled as a top-secret site for testing the feasibility of deploying nuclear missiles from the Arctic. When Camp Century was decommissioned in 1967, its infrastructure and waste were abandoned under the assumption they would be forever entombed beneath the colossal sheet of ice. But climate change has warmed the Arctic more than any other region on Earth, and parts of the Greenland Ice Sheet are melting faster than snow can accumulate. What will happen in the coming decades if the melting ice exposes the biological, chemical, and radioactive waste left behind at Camp Century? In this episode, University of Colorado Boulder glaciologist Mike MacFerrin recounts Camp Century’s intriguing history and its role in the Cold War. He discusses the potential hazard Camp Century’s waste poses to the environment and surrounding communities and examines what, if anything, should be done about it now.    

Host Aaron Cain speaks with biogeochemist Jeffrey White about his search for climate change clues at the edge of the Greenland Ice Sheet.

The Greenland ice sheet is massive, mysterious -- and melting. Using advanced technology, scientists are revealing its secrets for the first time, and what they've found is amazing: hidden under the ice sheet is a vast aquifer that holds a Lake Tahoe-sized volume of water from the summer melt. Does this water stay there, or does it find its way out to the ocean and contribute to global sea level rise? Join glaciologist Kristin Poinar for a trip to this frozen, forgotten land to find out. Hosted on Acast. See acast.com/privacy for more information.

The Greenland ice sheet is massive, mysterious -- and melting. Using advanced technology, scientists are revealing its secrets for the first time, and what they've found is amazing: hidden under the ice sheet is a vast aquifer that holds a Lake Tahoe-sized volume of water from the summer melt. Does this water stay there, or does it find its way out to the ocean and contribute to global sea level rise? Join glaciologist Kristin Poinar for a trip to this frozen, forgotten land to find out.

This week on Terra Informa, we have two gems from our archives for you. First, we look back on the 2014 Peoples’ Social Forum and how that event brought diverse groups of people together to collaborate on building strategies to create social change. Next up, we have a story on the massive Greenland ice sheet melt of summer 2012, when 97% of the ice sheet melted in just four days. 

This FrostByte was created by Xavier Fettweis, from University of Liège (Belgium), for the Constraining uncertainty in Greenland Ice Sheet surface mass balance model output and in situ validation workshop, held 19-20 May 2015, in Sheffield, UK.This FrostByte shows that the Greenland ice sheet contribution to sea level changes is a drop over the 20th century and a rise during the 21st century.climato.be/fettweisClick here for video

Nathan, Mike, and Mahler talk about the Siberia to China pipeline, the Greenland Ice Sheet,Thailand, Recep Tayyip Erdogan, Narendra Modi, titanosaur, The USA Freedom Act, High Assurance Cyber Military Systems GM, Mitch McConnell, AT&T, and FBI cannabis.

Sunlight Absorption on the Greenland ice sheet Experiment (SAGE)" Tuesday, January 07 2014, 12:00pm - 1:30pm 041 Haldeman Center Chris Polashenski, PhD, Research Geophysicist, Cold Regions Research and Engineering Laborator (CRREL) Big changes are happening on the Greenland Ice Sheet. Trends show increasing melt extent, longer melt seasons, lower surface albedo, higher ice temperatures, and increased ice flow. All of these are important because the Greenland Ice Sheet is a major potential contributor to sea level rise. Zoe Courville, PhD, and Chris Polashenski, PhD, at the US Army Cold Regions Research and Engineering Laboratory (CRREL) are leading a series of studies aimed at better understanding how albedo feedbacks are contributing to enhanced melt on the ice sheet. These studies are organized around large scale traverses of the ice sheet, observing albedo, snow properties, light absorbing impurity concentrations, and firn temperatures, and synthesizing data from the traverses with remote sensing observations and large scale modeling. The first traverse occurred from April-June 2013 and preliminary results will be presented. Part of the traverse followed the route pioneered by the godfather of Greenland research, Carl Benson. Replicating Benson's observations shows substantial warming has occurred in mid altitudes of the ice sheet. The traverse also found enhanced black carbon concentrations in the 2012 melt layer. We analyze these to assess the role that black carbon deposition may have played in the 2012 melt event, and compare the impacts of black carbon with grain metamorphosis. Finally we discuss plans for 2014 and invite comments and discussion. Dr. Polashenski is a research geophysicist with the Terrestrial and Cryospheric Sciences Branch at CRREL specializing in the physical properties of sea ice and snow. He received his undergraduate degree and a doctoral degree in material engineering from the Thayer School of Engineering at Dartmouth, and is a veteran of Dartmouth's NSF IGERT program on polar environmental change. Now he leads research programs exploring processes of the cryosphere, particularly those that influence energy balance feedbacks, such as melt pond formation on sea ice, aerosol deposition in snow, and snow grain metamorphosis. Sponsored by the Institute of Arctic Studies at the Dickey Center and the IGERT Dialogues in Polar Science & Society.

The ice loss in Greenland shows acceleration during the last decade. WSL director Konrad Steffen explains how scientists gained new insight using ground penetrating radar and a video system during the melt peak in August 2007-2010. Water penetrates to great depth through moulins and cracks, lubricating the bottom of the ice sheet.

Ice on earth is sensitive to climate change and ice plays a role in climate change processes. Recent trends in the Greenland ice sheet provide an important example. Over the past two decades the extent of surface melt water on the ice sheet has increased. Inaddition, satellites have detected a decrease in the overall mass of the Greenland Ice Sheet. Paleoclimate is also discussed in this lecture, with a focus on climate over the last 5 million years. The mid-Pliocene was a particularly warm period from 3.3-3 million years before present. The Pleistocene was a more recent cold period ending with the Last Glacial Maximum about 14,000 years before present. In comparison, the Holocene (12,000 years ago to present) has been a relatively warm stable climatic period. Geomorphology is used to determine the extent of continental ice in the past. Complete course materials are available at the Open Yale Courses website: http://oyc.yale.edu This course was recorded in Fall 2011.