Podcasts about mesoscale

Becky Kern is a Lead Meteorologist at the National Weather Service Office in Omaha, Nebraska. Becky joined Captain John Vik and Sara Sump to discuss the National Weather Service (NWS) and severe weather awareness as we move into spring. Becky's background. The NWS mission and history. NWS products and services. Staff and career options. The weather watch/warning process. Mesoscale discussions. Severe weather precautions. "Snow squalls" and other hazards.

Rebecca Morss' scientific credentials are impeccable – a PhD in atmospheric science from MIT, more than 20 years of experience at the Mesoscale and Microscale Meteorology (MMM) Laboratory at the National Center for Atmospheric Research (NCAR), and currently the Senior Scientist and Deputy Director of the center. But what really sets Rebecca apart is her focus on the intersection between scientific information and its use by people.Rebecca is an expert in weather forecasting systems and risk communication, and she specializes in high-impact weather including hurricanes, floods, and tornadoes. Her research isn't limited to the intricacies of weather phenomena and prediction, but extends to how forecasts are formulated, communicated, received, and acted upon. For Rebecca, science is not a solitary endeavor but a bridge that connects researchers, societal stakeholders, and policy-makers alike.Despite the importance of weather predictions in preserving lives and property, ensuring that people understand these forecasts and know how to act upon them has often been overlooked and underfunded. In her conversation with Adam, Rebecca talks about how she has retained her unique identity as a physical scientist while navigating the challenges of this inherently interdisciplinary sphere:"There's a lot of counterincentives. I've been to workshops on interdisciplinary research [...] in a variety of fields, and if you talk to professors at universities, even if they wanna do this, there's so many barriers to doing it, there's so many disincentives. The best way to get ahead if you're in a research career is to publish a lot of papers and get a lot of citations. And the best way to do that is to do something that other people are doing, and to not buck the trend. It takes a lot longer to learn new things every time. People aren't citing you if no one else is doing it."Adam's and Rebecca's discussion then pivots to two recent extreme weather events. First, Hurricane Ian, where an evacuation order delay resulted in tragic loss of life in Lee County/Florida. Second, the Marshall Fire of December 2021, a disaster that literally hit close to home for Rebecca. The fire ravaged her neighborhood in Boulder County, Colorado, coming perilously close to her own house, and giving her a first-hand experience of the crucial role of effective risk communication.The interview with Rebecca was recorded in October 2022.Rebecca's website at NCAR

We talk to Kelly Núñez Ocasio about the excitement of aircraft missions studying African easterly waves, the challenge of effectively communicating your science, and being strategic about pursuing opportunities in the weather, water, and climate sciences.Episode transcriptHosted by Matt Moll and Kelly SavoieEdited by Peter TrepkeTheme music composed and performed by Steve SavoieVisit AMS Career Resources on the web!Contact us at skypodcast@ametsoc.org with any feedback or if you'd like to become a future guest.Copyright © 2023 American Meteorological Society

With Daryl Ritchison, Director of the North Dakota Agricultural Weather Network (NDAWN)In Episode 20 of OTT Cast, we welcome Daryl Ritchison to share his expertise on mesoscale monitoring. With over 30 years of experience in the field of Meteorology in both forecasting and environmental monitoring, Daryl Ritchison is often consulted for his expertise in the field. As the leader of the pioneering North Dakota Agricultural Weather Network (NDAWN) National Mesonet Program, Daryl provides insight into the development of the Mesonet Program and how increasing spatial resolution of monitoring networks can support a variety of stakeholders and provide a significant return on investment for a community.Tune in to join our new host Julie Dauer and learn about: The intricate relationship between precipitation, snow water equivalent (SWE), and soil moisture, and how these factors impact critical aspects of our lives such as flooding and crop yield.The National Mesonet Program: how the NWS leverages the data and the program's ability to cultivate a synergetic community dynamic How the OTT Pluvio² has vastly improved the accuracy of his network by providing comprehensive data on all types of precipitation=====CONTACT https://get.otthydrometinsights.com/podcast-contact-us/

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2023.05.02.539079v1?rss=1 Authors: Koelle, S., Mastrovito, D., Whitesell, J. D., Hirokawa, K. E., Zeng, H., Meila, M., Harris, J. A., Mihalas, S. Abstract: Copy rights belong to original authors. Visit the link for more info Podcast created by Paper Player, LLC

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2023.03.27.534480v1?rss=1 Authors: Surinach, D., Rynes, M. L., Saxena, K., Ko, E., Redish, A. D., Redish, A. D., Kodandaramaiah, S. B. Abstract: Spatial navigation is a complex cognitive process that involves neural computations in distributed regions of the brain. Little is known about how cortical regions are coordinated when animals navigate novel spatial environments or how that coordination changes as environments become familiar. We recorded mesoscale calcium dynamics across large swathes of the dorsal cortex in mice solving the Barnes maze, a 2D spatial navigation task where mice used random, serial, and spatial search strategies to navigate to the goal. Cortical dynamics exhibited patterns of repeated calcium activity with rapid and abrupt shifts between cortical activation patterns at sub-second time scales. We used a clustering algorithm to decompose the spatial patterns of cortical calcium activity in a low dimensional state space, identifying 7 states, each corresponding to a distinct spatial pattern of cortical activation, sufficient to describe the cortical dynamics across all the mice. When mice used serial or spatial search strategies to navigate to the goal, the frontal regions of the cortex were reliably activated for prolonged durations of time ( greater than 1s) shortly after trial initiation. These frontal cortex activation events coincided with mice approaching the edge of the maze from the center and were preceded by temporal sequences of cortical activation patterns that were distinct for serial and spatial search strategies. In serial search trials, frontal cortex activation events were preceded by activation of the posterior regions of the cortex followed by lateral activation of one hemisphere. In spatial search trials, frontal cortical events were preceded by activation of posterior regions of the cortex followed by broad activation of the lateral regions of the cortex. Our results delineated cortical components that differentiate goal- and non-goal oriented spatial navigation strategies. Copy rights belong to original authors. Visit the link for more info Podcast created by Paper Player, LLC

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2023.03.20.533476v1?rss=1 Authors: Nöbauer, T., Zhang, Y., Kim, H., Vaziri, A. Abstract: Various implementations of mesoscopes provide optical access for calcium imaging across multi-millimeter fields-of-view (FOV) in the mammalian brain. However, capturing the ac-tivity of the neuronal population within such FOVs near-simultaneously and in a volumetric fashion has remained challenging since approaches for imaging scattering brain tissues typically are based on sequential acquisition. Here, we present a modular, mesoscale light field (MesoLF) imaging hardware and software solution that allows recording from thou-sands of neurons within volumes of O 4000 x 200 m, located at up to 400 m depth in the mouse cortex, at 18 volumes per second. Our optical design and computational approach enable up to hour-long recording of ~10,000 neurons across multiple cortical areas in mice using workstation-grade computing resources. Copy rights belong to original authors. Visit the link for more info Podcast created by Paper Player, LLC

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2022.12.26.521973v1?rss=1 Authors: Perera, N. D., Alekseichuk, I., Shirinpour, S., Wischnewski, M., Linn, G., Masiello, K., Butler, B., Russ, B. E., Schroeder, C. E., Falchier, A., Opitz, A. Abstract: Transcranial magnetic stimulation (TMS) is a non-invasive brain stimulation method that is rapidly growing in popularity for studying causal brain-behavior relationships. However, its dose-dependent direct neural mechanisms and indirect sensory co-stimulation effects remain hotly debated. Understanding how TMS modulates neural activity at different scales and how stimulation parameters affect brain responses is vital for the rational design of TMS protocols. Studying these mechanisms in humans is challenging due to the limited spatiotemporal resolution of available non-invasive neuroimaging methods. Here, we leverage invasive recordings of local field potentials in non-human primates and show that mesoscale early TMS-evoked potentials are dose and location dependent. Further, we employ several control conditions to dissociate direct neural responses from auditory and somatosensory co-activation. These results provide crucial evidence regarding TMS neural effects at the brain circuit level. Our findings are highly relevant for interpreting human TMS studies and biomarker developments for TMS target engagement in clinical applications. Copy rights belong to original authors. Visit the link for more info Podcast created by Paper Player, LLC

Tonight's first Guest WeatherBrain is a Senior Scientist and Deputy Director of the Mesoscale and Microscale Meteorology (MMM) Laboratory at the National Center for Atmospheric Research in Boulder, Colorado. Rebecca Morss, welcome to WeatherBrains!  Tonight's second Guest WeatherBrain is a research scientist at the National Center for Atmospheric Research (NCAR) in the Mesoscale and Microscale Meteorology (MMM) Lab with the Weather Risks and Decisions in Society (WRaDS) research group. Julie DeMuth, welcome to WeatherBrains!  Tonight's third Guest WeatherBrain is an Associate Professor at Carnegie Mellon University.  He has his Ph.D. in Quanitative Psychology.  Stephen Strader, welcome to WeatherBrains!  Tonight's final Guest WeatherBrain is an Assistant Professor in the Department of Geography and the Environment at Villanova University. His appearances are becoming sort of an annual Spring occurrence. Stephen Broomell, welcome to WeatherBrains!

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.10.23.338079v1?rss=1 Authors: Bajpai, G., Amiad-Pavlov, D., Lorber, D., Volk, T., Safran, S. Abstract: Intact-organism imaging of Drosophila larvae reveals and quantifies chromatin-aqueous phase separation. The chromatin can be organized near the lamina layer of the nuclear envelope, conventionally fill the nucleus, be organized centrally, or as a wetting droplet. These transitions are controlled by changes in nuclear volume and the interaction of chromatin with the lamina (part of the nuclear envelope) at the nuclear periphery. Using a simple polymeric model that includes the key features of chromatin self-attraction and its binding to the lamina, we demonstrate theoretically that it is the competition of these two effects that determines the mode of chromatin distribution. The qualitative trends as well as the compositional profiles obtained in our simulations compare well with the observed intact-organism imaging and quantification. Since the simulations contain only a small number of physical variables we can identify the generic mechanisms underlying the changes in the observed phase separations. Copy rights belong to original authors. Visit the link for more info

Fear-based messages are likely to be persuasive; however, “full-fear” could backfire and damage the message’s impact. Hurricanes are also fearful, but most people prefer to remain in their homes when a named-storm is approaching. During this episode, Hurricane Deathtron 3000, Dr. Michael Barbera, and Clicksuasion contributors Cara Cuite and Rebecca Morss discuss how fear-based messages and hurricane names could persuade people to evacuate. Dr. Rebecca E. Morss is a Senior Scientist at the National Center for Atmospheric Research in Boulder, Colorado, where she is also Deputy Director of the Mesoscale and Microscale Meteorology Laboratory. She has interdisciplinary expertise in weather forecasting systems and risk communication, with an emphasis on high-impact weather including hurricanes, floods, and tornadoes. Her research focuses on the communication and interpretation of hazardous weather risks, the use of uncertain weather-related information in decision making, and weather hazard prediction and predictability. She has served in multiple national and international leadership roles, including on several U.S. National Academies of Science and Engineering committees and as an elected Councilor of the American Meteorological Society. Dr. Morss received a B.A. from the University of Chicago and a Ph.D. from the Massachusetts Institute of Technology. Cara Cuite is an Assistant Extension Specialist in the Department of Human Ecology at Rutgers University. Dr. Cuite is a health psychologist who studies community food security, risk communication and public perceptions of food-related issues, including food safety and genetically engineered foods. Recent projects have focused on communicating about weather-related emergencies as well as interventions to reduce household food, energy, and water use. Her work has been funded by the National Science Foundation, the United States Department of Agriculture, the National Center for Food Protection and Defense, New Jersey Sea Grant, and Johnson & Johnson. She received her Ph.D. in Psychology from Rutgers University and a B.S. in Psychology and Modern Languages from Union College.

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.07.08.193334v1?rss=1 Authors: Yaroslav Sych, Aleksejs Fomins, Leonardo Novelli, Fritjof Helmchen Abstract: Adaptive behavior is coordinated by neuronal networks that are distributed across multiple brain regions. How cross-regional interactions reorganize during learning remains elusive. We applied multi-fiber photometry to chronically record simultaneous activity of 12-48 mouse brain regions while mice learned a tactile discrimination task. We found that with learning most regions shifted their peak activity from reward-related action to the reward-predicting stimulus. We corroborated this finding by functional connectivity estimation using transfer entropy, which revealed growth and stabilization of mesoscale networks encompassing basal ganglia, thalamus, cortex, and hippocampus, especially during stimulus presentation. The internal globus pallidus, ventromedial thalamus, and several regions in frontal cortex emerged as hub regions. Our results highlight the cooperative action of distributed brain regions to establish goal-oriented mesoscale network dynamics during learning.Competing Interest StatementThe authors have declared no competing interest.View Full Text Copy rights belong to original authors. Visit the link for more info

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.06.25.172288v1?rss=1 Authors: Qin, Y., Maurer, A., Sheremet, A. Abstract: Motivated by previous research suggesting that mesoscopic collective activity has the defining characteristics of a turbulent system, we postulate a thermodynamic model based on the fundamental assumption that the activity of a neuron is characterized by two distinct stages: a sub-threshold stage, described by the value of mean membrane potential, and a transitional stage, corresponding to the firing event. We therefore distinguish between two types of energy: the potential energy released during a spike, and the internal kinetic energy that triggers a spike. Formalizing these assumptions produces a system of integro-differential equations that generalizes existing models [Wilson and Cowan, 1973, Amari, 1977], with the advantage of providing explicit equations for the evolution of state variables. The linear analysis of the system shows that it supports single- or triple- point equilibria, with the refractoriness property playing a crucial role in the generation of oscillatory behavior. In single-type (excitatory) systems this derives from the natural refractory state of a neuron, producing "refractory oscillations" with periods on the order of the neuron refractory period. In dual-type systems, the inhibitory component can provide this functionality even if neuron refractory period is ignored, supporting mesoscopic-scale oscillations at much lower activity levels. Assuming that the model has any relevance for the interpretation of LFP measurements, it provides insight into mesoscale dynamics. As an external forcing, theta may play a major role in modulating key parameters of the system: internal energy and excitability (refractoriness) levels, and thus in maintaining equilibrium states, and providing the increased activity necessary to sustain mesoscopic collective action. Linear analysis suggest that gamma oscillations are associated with the theta trough because it corresponds to higher levels of forced activity that decreases the stability of the equilibrium state, facilitating mesoscopic oscillations. Copy rights belong to original authors. Visit the link for more info

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.05.25.114892v1?rss=1 Authors: Rynes, M. L., Surinach, D., Linn, S., Laroque, M., Rajendran, V., Dominguez, J., Hadjistamolou, O., Navabi, Z. S., Ghanbari, L., Johnson, G. L., Nazari, M., Mohajerani, M., Kodandaramaiah, S. B. Abstract: The advent of genetically encoded calcium indicators, along with surgical preparations such as thinned skulls or refractive index matched skulls, have enabled mesoscale cortical activity imaging in head-fixed mice. Such imaging studies have revealed complex patterns of coordinated activity across the cortex during spontaneous behaviors, goal-directed behavior, locomotion, motor learning, and perceptual decision making. However, neural activity during unrestrained behavior significantly differs from neural activity in head-fixed animals. Whole-cortex imaging in freely behaving mice will enable the study of neural activity in a larger, more complex repertoire of behaviors not possible in head-fixed animals. Here we present the Mesoscope, a wide-field miniaturized, head-mounted fluorescence microscope compatible with transparent polymer skulls recently developed by our group. With a field of view of 8 mm x 10 mm and weighing less than 4 g, the Mesoscope can image most of the mouse dorsal cortex with resolution ranging from 39 to 56 micrometers. Stroboscopic illumination with blue and green LEDs allows for the measurement of both fluorescence changes due to calcium activity and reflectance signals to capture hemodynamic changes. We have used the Mesoscope to successfully record mesoscale calcium activity across the dorsal cortex during sensory-evoked stimuli, open field behaviors, and social interactions. Finally, combining the mesoscale imaging with electrophysiology enabled us to measure dynamics in extracellular glutamate release in the cortex during the transition from wakefulness to natural sleep. Copy rights belong to original authors. Visit the link for more info

IMPORTANT: If you reside in any potential, forecasted or predicted path of Hurricane Dorian, we advise you to make immediate plans to evacuate. Your safety, your family's safety and the safety of your fur babies are not worth the risk of remaining at your home. Personal items can be replaced...you cannot.  Rebroadcast from April 2018. Here's how behavioral science will nudge, influence and persuade you to evacuate from a hurricane.  Fear-based messages are likely to be persuasive; however, “full-fear” could backfire and damage the message’s impact. Hurricanes are also fearful, but most people prefer to remain in their homes when a named-storm is approaching. During this episode, Hurricane Deathtron 3000, Michael Barbera and Clicksuasion contributors Cara Cuite and Rebecca Morss discuss how fear-based messages and hurricane names could persuade people to evacuate. Dr. Rebecca E. Morss is a Senior Scientist at the National Center for Atmospheric Research in Boulder, Colorado, where she is also Deputy Director of the Mesoscale and Microscale Meteorology Laboratory. She has interdisciplinary expertise in weather forecasting systems and risk communication, with an emphasis on high-impact weather including...

Guests: Jen Henderson, PhD - Postdoctoral Fellow with the Cooperative Institute for Research in Environmental Sciences in Boulder, CO. Julie Demuth, PhD - Research Scientist at the National Center for Atmospheric Research in the Mesoscale and Microscale Meteorology Lab Description:Today, we’re excited to welcome Dr. Jen Henderson, a Postdoctoral Fellow with the Cooperative Institute for Research in Environmental Sciences in Boulder, CO and Dr. Julie Demuth, a Research Scientist at the National Center for Atmospheric Research in the Mesoscale and Microscale Meteorology Lab. Both are dedicating their research to understanding the social science between severe weather warnings and why people make the decisions they do in the face of potentially damaging and life-threatening weather. Preservation of life is their main mission, and they hope to accomplish this by bridging the gap between sociology and meteorology by leading the charge to find the best ways to communicate life-saving information to the public!

Fear-based messages are likely to be persuasive; however, “full-fear” could backfire and damage the message’s impact. Hurricanes are also fearful, but most people prefer to remain in their homes when a named-storm is approaching. During this episode, Hurricane Deathtron 3000, Michael Barbera and Clicksuasion contributors Cara Cuite and Rebecca Morss discuss how fear-based messages and hurricane names could persuade people to evacuate. Dr. Rebecca E. Morss is a Senior Scientist at the National Center for Atmospheric Research in Boulder, Colorado, where she is also Deputy Director of the Mesoscale and Microscale Meteorology Laboratory. She has interdisciplinary expertise in weather forecasting systems and risk communication, with an emphasis on high-impact weather including hurricanes, floods, and tornadoes. Her research focuses on the communication and interpretation of hazardous weather risks, the use of uncertain weather-related information in decision making, and weather hazard prediction and predictability. She has served in multiple national and international leadership roles, including on several U.S. National Academies of Science and Engineering committees and as an elected Councilor of the American Meteorological Society. Dr. Morss received a B.A. from the University of Chicago and a Ph.D. from the Massachusetts Institute of Technology. Cara Cuite is an Assistant Extension Specialist in the Department of Human Ecology at Rutgers University. Dr. Cuite is a health psychologist who studies community food security, risk communication and public perceptions of food-related issues, including food safety and genetically engineered foods. Recent projects have focused on communicating about weather-related emergencies as well as interventions to reduce household food, energy, and water use. Her work has been funded by the National Science Foundation, the United States Department of Agriculture, the National Center for Food Protection and Defense, New Jersey Sea Grant, and Johnson & Johnson. She received her Ph.D. in Psychology from Rutgers University and a B.S. in Psychology and Modern Languages from Union College.

Why do mountains form, earthquakes happen, and volcanoes form where they do? The answer is plate tectonics. This week we explore the history of being wrong about how the Earth works. Shannon’s Keyboard Plate Tectonics Tectonics is from the Greek tekton or “builder” Ben Franklin’s Letter Alfred Wegener The Origin of Continents and Oceans (Book by Wegener) Mesosaurus Arthur Holmes (1928) NOAA Seafloor Spreading Activity Seafloor spreading proposed by Hess and Dietz B.O.B and NDGT rap battle about the shape of the Earth John Tuzo Wilson Mantle Convection Slab Pull Chain demonstration Plate Boundaries Divergent Convergent Transform Lava lakes as analogs Fun Paper Friday How does cement harden? Does it turn into a continuous material or is it still a bunch of grains stuck together? Find out with this week’s Fun Paper Friday! MIT News Story on Research Ioannidou, K., Krakowiak, K. J., Bauchy, M., Hoover, C. G., Masoero, E., Yip, S., et al. (2016). Mesoscale texture of cement hydrates. Proceedings of the National Academy of Sciences, 201520487–6. http://doi.org/10.1073/pnas.1520487113 Contact us: Show - www.dontpanicgeocast.com - @dontpanicgeo - show@dontpanicgeocast.com John Leeman - www.johnrleeman.com - @geo_leeman Shannon Dulin - @ShannonDulin

Methven, J (University of Reading) Monday 02 December 2013, 11:30-12:15