Podcasts about rossby

Sickle cell is a life-long debilitating condition that predominantly affects people of black African and black African Caribbean background. This podcast series explores what it is like to have sickle cell and what the NHS is doing to improve sickle cell care following publication of the No One's Listening report. In episode 1 Dr Dianne Addei, a consultant in public health medicine and NHS England's lead for sickle-cell services, is joined by patient, Stephanie George, and Dr Rossby Awadzi, a North-west London haematology doctor to help clinicians, patients and the public to get a better understanding of sickle cell. Stephanie explains what it is like to live with sickle cell, while Dianne and Rossby discuss the benefits of genetic blood testing ahead of blood transfusions, the sickle cell patient education programme, role of staff education and Dianne provides an update on the new NHS sickle cell disorder emergency department by-pass units. A transcript of this episode is available on our website - https://www.england.nhs.uk/long-read/transcript-podcast-1-understanding-sickle-cell-and-the-role-of-education/ Contact us: england.sicklecellreview@nhs.net

Welcome to Astronomy Daily, your friendly and engaging source for all things space and Astronomy. I'm your host, Anna, here to guide you through the latest cosmic headlines. Whether you're a casual stargazer or an astrophysics enthusiast, we've got news that will spark your curiosity and keep you informed about the universe.- **Planetary Influences on the Sun's Magnetic Cycles**: Researchers at the Helmholtz Zentrum Dresden, Rossendorf, and the University of Latvia have unveiled a groundbreaking physical model supporting the planetary hypothesis. This model proposes that vortex-shaped currents on the sun, named Rossby waves, act as intermediaries between the gravitational influences of planets like Venus, Earth, and Jupiter, and the sun's magnetic activities. By revealing how Rossby waves mediate the planet's tidal forces, researchers can now predict and understand even longer-term solar cycles, offering new insights into the sun's behavior and its interactions with the rest of our solar system.- **Exploring Neptune's Moon Triton**: Steve Olson and Jeffrey Landis have proposed the Triton Hopper mission to explore Neptune's largest moon, Triton. The innovative mission aims to use a cryogenic pump to extract propellant directly from Triton's icy surface, enabling the hopper to cover significant distances by hopping across the moon. Loaded with scientific instruments, this mission could unlock a wealth of data about Triton's geology and potential for biological activity.- **Redefining What Makes a Planet**: The definition of what constitutes a planet is back up for debate. Researchers like Jean-Luc Margot of UCLA have proposed new criteria focusing on dynamical dominance and mass. This refined classification aims to provide clarity and consistency, aiding both the astronomical community and the public's understanding of what exactly constitutes a planet. The IAU is expected to discuss these proposals further at their next general assembly in Rome in 2027.- **Space Sustainability Collaboration**: Airbus Defense and Space and Astroscale Limited have partnered to advance in-orbit servicing and space debris removal. Their collaboration focuses on space debris removal, in-orbit servicing, precise navigation and docking technologies, in-orbit space assembly and manufacturing, and satellite refueling and life extension. This partnership aims to enhance the longevity and efficiency of space assets, contributing significantly to building a circular economy in space.For more Astronomy Daily, including our continually updating newsfeed, visit our website at astronomydaily.io. Follow us on social media at AstroDailyPod on Facebook, X, YouTubeMusic, and TikTok. We love engaging with our community, so be sure to drop us a message or comment on your favorite platform.For more Space and Astronomy News Podcasts, visit our HQ at www.bitesz.com.Become a supporter of this podcast: https://www.spreaker.com/podcast/astronomy-daily-the-podcast--5648921/support.

Mikel Lejarza nos habla del estreno de la serie de esta semana:  'Caso Asunta'. Adriana Mourelos avanza el nuevo episodio de Detectives ¡Junior! Edgar Hita se borra de la faceta política tras la avalancha de críticas recibidas (una). Luismi Pérez explica lo que son las Ondas de Rossby. Laura Martínez repasa los estrenos del cine. Y en el segundo grabófono. Adriana Mourelos habla de Sánchez con amorch.

September 2023 var den varmaste som någonsin uppmätts globalt, och siffrorna får forskare att knappt tro sina ögon. Vad ligger bakom rekordet? Lyssna på alla avsnitt i Sveriges Radio Play. ”Jag trodde först att det var ett mätfel”, säger Mika Rantanen vid Finlands meteorologiska institut om de nya siffrorna från EU:s klimattjänst Copernicus, baserade på satellitmätningar. Den globala genomsnittstemperaturen för september 2023 var 1,75 grader varmare än förindustriell tid och det tidigare rekordet slogs med hela 0,5 grader. Även månaderna juni, juli och augusti är de varmaste som uppmätts, och det ser ut som att även helåret 2023 kan bli rekordvarmt. Människans utsläpp av växthusgaser, men också väderfenomenet El Nino och ett mycket ovanligt vulkanutbrott pekas ut som förklaringar.Medverkande: Erik Kjellström, professor i klimatologi vid SMHI:s Rossby centre; Daniel Värjö, reporter Sveriges radios miljöprogram Klotet. Programledare: Björn Gunérbjorn.guner@sr.seProducent och reporter: Mattias Pleijelmattias.pleijel@sr.se

Revisiting the space weather environment of Proxima Centauri b by Cecilia Garraffo et al. on Wednesday 30 November Close-in planets orbiting around low-mass stars are exposed to intense energetic photon and particle radiation and harsh space weather. We have modeled such conditions for Proxima Centauri b (Garraffo et al. 2016b), a rocky planet orbiting in the habitable-zone of our closest neighboring star, finding a stellar wind pressure three orders of magnitude higher than the solar wind pressure on Earth. At that time, no Zeeman-Doppler observations of the surface magnetic field distribution of Proxima Cen were available and a proxy from a star with similar Rossby number to Proxima was used to drive the MHD model. Recently, the first ZDI observation of Proxima Cen became available (Klein et al. 2021). We have modeled Proxima b's space weather using this map and compared it with the results from the proxy magnetogram. We also computed models for a high-resolution synthetic magnetogram for Proxima b generated by a state-of-the-art dynamo model. The resulting space weather conditions for these three scenarios are similar with only small differences found between the models based on the ZDI observed magnetogram and the proxy. We conclude that our proxy magnetogram prescription based on Rossby number is valid, and provides a simple way to estimate stellar magnetic flux distributions when no direct observations are available. Comparison with models based on the synthetic magnetogram show that the exact magnetogram details are not important for predicting global space weather conditions of planets, reinforcing earlier conclusions that the large-scale (low-order) field dominates, and that the small-scale field does not have much influence on the ambient stellar wind. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.15697v1

Revisiting the space weather environment of Proxima Centauri b by Cecilia Garraffo et al. on Tuesday 29 November Close-in planets orbiting around low-mass stars are exposed to intense energetic photon and particle radiation and harsh space weather. We have modeled such conditions for Proxima Centauri b (Garraffo et al. 2016b), a rocky planet orbiting in the habitable-zone of our closest neighboring star, finding a stellar wind pressure three orders of magnitude higher than the solar wind pressure on Earth. At that time, no Zeeman-Doppler observations of the surface magnetic field distribution of Proxima Cen were available and a proxy from a star with similar Rossby number to Proxima was used to drive the MHD model. Recently, the first ZDI observation of Proxima Cen became available (Klein et al. 2021). We have modeled Proxima b's space weather using this map and compared it with the results from the proxy magnetogram. We also computed models for a high-resolution synthetic magnetogram for Proxima b generated by a state-of-the-art dynamo model. The resulting space weather conditions for these three scenarios are similar with only small differences found between the models based on the ZDI observed magnetogram and the proxy. We conclude that our proxy magnetogram prescription based on Rossby number is valid, and provides a simple way to estimate stellar magnetic flux distributions when no direct observations are available. Comparison with models based on the synthetic magnetogram show that the exact magnetogram details are not important for predicting global space weather conditions of planets, reinforcing earlier conclusions that the large-scale (low-order) field dominates, and that the small-scale field does not have much influence on the ambient stellar wind. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.15697v1

Traveling planetary-scale waves cause cloud variability on tidally locked aquaplanets by Maureen Cohen et al. on Wednesday 23 November Cloud cover at the planetary limb of water-rich Earth-like planets is likely to weaken chemical signatures in transmission spectra, impeding attempts to characterize these atmospheres. However, based on observations of Earth and solar system worlds, exoplanets with atmospheres should have both short-term weather and long-term climate variability, implying that cloud cover may be less during some observing periods. We identify and describe a mechanism driving periodic clear sky events at the terminators in simulations of tidally locked Earth-like planets. A feedback between dayside cloud radiative effects, incoming stellar radiation and heating, and the dynamical state of the atmosphere, especially the zonal wavenumber-1 Rossby wave identified in past work on tidally locked planets, leads to oscillations in Rossby wave phase speeds and in the position of Rossby gyres and results in advection of clouds to or away from the planet's eastern terminator. We study this oscillation in simulations of Proxima Centauri b, TRAPPIST 1-e, and rapidly rotating versions of these worlds located at the extreme inner edge of their stars' habitable zones. We simulate time series of the transit depths of the 1.4 {mu}m water feature and 2.7 {mu}m carbon dioxide feature. The impact of atmospheric variability on the transmission spectra is sensitive to the structure of the dayside cloud cover and the location of the Rossby gyres, but none of our simulations have variability significant enough to be detectable with current methods. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.11887v1

Traveling planetary-scale waves cause cloud variability on tidally locked aquaplanets by Maureen Cohen et al. on Wednesday 23 November Cloud cover at the planetary limb of water-rich Earth-like planets is likely to weaken chemical signatures in transmission spectra, impeding attempts to characterize these atmospheres. However, based on observations of Earth and solar system worlds, exoplanets with atmospheres should have both short-term weather and long-term climate variability, implying that cloud cover may be less during some observing periods. We identify and describe a mechanism driving periodic clear sky events at the terminators in simulations of tidally locked Earth-like planets. A feedback between dayside cloud radiative effects, incoming stellar radiation and heating, and the dynamical state of the atmosphere, especially the zonal wavenumber-1 Rossby wave identified in past work on tidally locked planets, leads to oscillations in Rossby wave phase speeds and in the position of Rossby gyres and results in advection of clouds to or away from the planet's eastern terminator. We study this oscillation in simulations of Proxima Centauri b, TRAPPIST 1-e, and rapidly rotating versions of these worlds located at the extreme inner edge of their stars' habitable zones. We simulate time series of the transit depths of the 1.4 {mu}m water feature and 2.7 {mu}m carbon dioxide feature. The impact of atmospheric variability on the transmission spectra is sensitive to the structure of the dayside cloud cover and the location of the Rossby gyres, but none of our simulations have variability significant enough to be detectable with current methods. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.11887v1

Traveling planetary-scale waves cause cloud variability on tidally locked aquaplanets by Maureen Cohen et al. on Tuesday 22 November Cloud cover at the planetary limb of water-rich Earth-like planets is likely to weaken chemical signatures in transmission spectra, impeding attempts to characterize these atmospheres. However, based on observations of Earth and solar system worlds, exoplanets with atmospheres should have both short-term weather and long-term climate variability, implying that cloud cover may be less during some observing periods. We identify and describe a mechanism driving periodic clear sky events at the terminators in simulations of tidally locked Earth-like planets. A feedback between dayside cloud radiative effects, incoming stellar radiation and heating, and the dynamical state of the atmosphere, especially the zonal wavenumber-1 Rossby wave identified in past work on tidally locked planets, leads to oscillations in Rossby wave phase speeds and in the position of Rossby gyres and results in advection of clouds to or away from the planet's eastern terminator. We study this oscillation in simulations of Proxima Centauri b, TRAPPIST 1-e, and rapidly rotating versions of these worlds located at the extreme inner edge of their stars' habitable zones. We simulate time series of the transit depths of the 1.4 {mu}m water feature and 2.7 {mu}m carbon dioxide feature. The impact of atmospheric variability on the transmission spectra is sensitive to the structure of the dayside cloud cover and the location of the Rossby gyres, but none of our simulations have variability significant enough to be detectable with current methods. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.11887v1

Traveling planetary-scale waves cause cloud variability on tidally locked aquaplanets by Maureen Cohen et al. on Tuesday 22 November Cloud cover at the planetary limb of water-rich Earth-like planets is likely to weaken chemical signatures in transmission spectra, impeding attempts to characterize these atmospheres. However, based on observations of Earth and solar system worlds, exoplanets with atmospheres should have both short-term weather and long-term climate variability, implying that cloud cover may be less during some observing periods. We identify and describe a mechanism driving periodic clear sky events at the terminators in simulations of tidally locked Earth-like planets. A feedback between dayside cloud radiative effects, incoming stellar radiation and heating, and the dynamical state of the atmosphere, especially the zonal wavenumber-1 Rossby wave identified in past work on tidally locked planets, leads to oscillations in Rossby wave phase speeds and in the position of Rossby gyres and results in advection of clouds to or away from the planet's eastern terminator. We study this oscillation in simulations of Proxima Centauri b, TRAPPIST 1-e, and rapidly rotating versions of these worlds located at the extreme inner edge of their stars' habitable zones. We simulate time series of the transit depths of the 1.4 {mu}m water feature and 2.7 {mu}m carbon dioxide feature. The impact of atmospheric variability on the transmission spectra is sensitive to the structure of the dayside cloud cover and the location of the Rossby gyres, but none of our simulations have variability significant enough to be detectable with current methods. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.11887v1

Transition from multipolar to dipolar dynamos in stratified systems by B. Zaire et al. on Monday 26 September Observations of surface magnetic fields of cool stars reveal a large diversity of configurations. Although there is now a consensus that these fields are generated through dynamo processes occurring within the convective zone, the physical mechanism driving such a variety of field topologies is still debated. This paper discusses the possible origins of dipole and multipole-dominated morphologies using three-dimensional numerical simulations of stratified systems where the magnetic feedback on the fluid motion is significant. Our main result is that dipolar solutions are found at Rossby numbers up to 0.4 in strongly stratified simulations, where previous works suggested that only multipolar fields should exist. We argue that these simulations are reminiscent of the outlier stars observed at Rossby numbers larger than 0.1, whose large-scale magnetic field is dominated by their axisymmetric poloidal component. As suggested in previous Boussinesq calculations, the relative importance of inertial over Lorentz forces is again controlling the dipolar to multipolar transition. Alternatively, we find that the ratio of kinetic to magnetic energies can equally well capture the transition in the field morphology. We test the ability of this new proxy to predict the magnetic morphology of a few M-dwarf stars whose internal structure matches that of our simulations and for which homogeneous magnetic field characterization is available. Finally, the magnitude of the differential rotation obtained in our simulations is compared to actual measurements reported in the literature for M-dwarfs. In our simulations, we find a clear relationship between anti-solar differential rotation and the emergence of dipolar fields. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2209.11652v1

Transition from multipolar to dipolar dynamos in stratified systems by B. Zaire et al. on Monday 26 September Observations of surface magnetic fields of cool stars reveal a large diversity of configurations. Although there is now a consensus that these fields are generated through dynamo processes occurring within the convective zone, the physical mechanism driving such a variety of field topologies is still debated. This paper discusses the possible origins of dipole and multipole-dominated morphologies using three-dimensional numerical simulations of stratified systems where the magnetic feedback on the fluid motion is significant. Our main result is that dipolar solutions are found at Rossby numbers up to 0.4 in strongly stratified simulations, where previous works suggested that only multipolar fields should exist. We argue that these simulations are reminiscent of the outlier stars observed at Rossby numbers larger than 0.1, whose large-scale magnetic field is dominated by their axisymmetric poloidal component. As suggested in previous Boussinesq calculations, the relative importance of inertial over Lorentz forces is again controlling the dipolar to multipolar transition. Alternatively, we find that the ratio of kinetic to magnetic energies can equally well capture the transition in the field morphology. We test the ability of this new proxy to predict the magnetic morphology of a few M-dwarf stars whose internal structure matches that of our simulations and for which homogeneous magnetic field characterization is available. Finally, the magnitude of the differential rotation obtained in our simulations is compared to actual measurements reported in the literature for M-dwarfs. In our simulations, we find a clear relationship between anti-solar differential rotation and the emergence of dipolar fields. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2209.11652v1

Starspots and Magnetism: Testing the Activity Paradigm in the Pleiades and M67 by Lyra Cao et al. on Thursday 22 September We measure starspot filling fractions for 240 stars in the Pleiades and M67 open star clusters using APOGEE high-resolution H-band spectra. For this work we developed a modified spectroscopic pipeline which solves for starspot filling fraction and starspot temperature contrast. We exclude binary stars, finding that the large majority of binaries in these clusters (80%) can be identified from Gaia DR3 and APOGEE criteria -- important for field star applications. Our data agree well with independent activity proxies, indicating that this technique recovers real starspot signals. In the Pleiades, filling fractions saturate at a mean level of 0.248$pm$0.005 for active stars with a decline at slower rotation; we present fitting functions as a function of Rossby number. In M67, we recover low mean filling fractions of 0.030$pm$0.008 and 0.003$pm$0.002 for main sequence GK stars and evolved red giants respectively, confirming that the technique does not produce spurious spot signals in inactive stars. Starspots also modify the derived spectroscopic effective temperatures and convective overturn timescales. Effective temperatures for active stars are offset from inactive ones by -109$pm$11 K, in agreement with the Pecaut & Mamajek empirical scale. Starspot filling fractions at the level measured in active stars changes their inferred overturn timescale, which biases the derived threshold for saturation. Finally, we identify a population of stars statistically discrepant from mean activity-Rossby relations and present evidence that these are genuine departures from a Rossby scaling. Our technique is applicable to the full APOGEE catalog, with broad applications to stellar, galactic, and exoplanetary astrophysics. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2209.10549v1

Three-dimensional non-kinematic simulation of post-emergence evolution of bipolar magnetic regions and Babcock-Leighton dynamo of the Sun by Yuto Bekki et al. on Monday 19 September The Babcock-Leighton (BL) flux-transport model is a widely-accepted dynamo model of the Sun. This dynamo model has been extensively studied in a two-dimensional (2D) mean-field framework in both kinematic and non-kinematic regimes. Recent three-dimensional (3D) models have been restricted to the kinematic regime. In these models, the surface poloidal flux is produced by the emergence of bipolar magnetic regions (BMRs) that are tilted according to Joy's law. We investigate the prescription for emergence of a BMR in 3D non-kinematic simulations. We also report initial results of cyclic BL dynamo simulation. We extend a conventional 2D mean-field model of the BL flux-transport dynamo into 3D non-kinematic regime. The large-scale mean flows are driven by the parameterized $Lambda$-effect in this model. For the induction equation, we use a BL source term by which the surface BMRs are produced in response to the dynamo-generated toroidal field inside the convection zone. We find that, in the 3D non-kinematic regime, the tilt angle of a newly-emerged BMR is very sensitive to the prescription for the subsurface structure of the BMR. Anti-Joy tilt angles are found unless the BMR is deeply embedded in the convection zone. We also find that the leading spot tends to become stronger than the following spot. The anti-Joy's law trend and the morphological asymmetry of the BMRs can be explained by the Coriolis force acting on the Lorentz-force-driven flows. Furthermore, we demonstrate that the solar-like magnetic cycles can be successfully obtained if the Joy's law is explicitly given in the BL $alpha$-effect. In these cyclic dynamo simulation, a strong Lorentz force feedback leads to cycle modulations in the differential rotation and meridional circulation. The non-axisymmetric components of the flows are found to exist as inertial modes such as the equatorial Rossby modes. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2209.08178v1

Una conversación con la artista Andrea Infante sobre un universos de efectos sonoros que son detectados en el espacio y que se originan en nuestro continente. Composiciones de Andrea Infante de su trabajo CETUS y Sonidos de tránsito de ROSSBY

Långt innan Greta Thunberg läxade upp världen i klimatfrågan, förklarade den här svensken hur atmosfärens skeenden påverkar oss alla. Meteorologins pionjär Carl-Gustaf Rossby, en av de mest inflytelserika människor som du aldrig har hört talas om. Redaktör: Marcus Rosenlund. E-post: kvanthopp@yle.fi

Professor Tom Rossby joins us to discuss his career in oceanography. Professor Tom Rossby: https://web.uri.edu/gso/meet/h-thomas-rossby/ Climate Scientists Podcast: https://twitter.com/ClimateSciPod Transcript for Accessibility: https://tinyurl.com/4zeh7452 Hosts: Dan Jones, Ella Gilbert Music and Cover Art: Dan Jones Editing: Sian Williams Page Audio Engineering: Lilian Blair --- Send in a voice message: https://anchor.fm/climate-scientists/message

For notes - https://aspirantvoice364798721.wordpress.com/2021/07/09/curving-rossby-waves-upsc-prelims-mains-geography-climatology-monsoon-revision/ Follow my telegram channel - https://t.me/aspirantvoice. Speak to me here - https://anchor.fm/aspirant-voice/message. Do follow me on Twitter- https://twitter.com/smurali236?s=09 , Facebook - https://www.facebook.com/Aspirantvoiceupsc/ , Instagram- https://instagram.com/aspirant_voice_upsc?utm_medium=copy_link --- Send in a voice message: https://anchor.fm/aspirant-voice/message

Show Notes: National Oceanic and Atmospheric Administration (NOAA) (02:00) Rachel Carson’s words (03:30) Scale of things and perspective Pioneers of oceanography: Rossby and Montgomery (07:30) Global conclusions from small data (09:30) World Ocean Circulation Experiment (10:00) Eye-opening expeditions (12:00) All kinds of ways of ’seeing’ (14:00) Evolution of distributing data (15:00) Recording our experiences (17:00) Books (19:45) Burr by Gore Vidal Iron Coffins by Herbert Werner Mentors and lessons: “Had to make mistakes myself to realize what they [were] trying to tell me all along” Thomas Rossby (25:00) Generosity of time and ideas Understanding of how people need to work together (28:00) Working across boundaries Curiosity-driven networks (29:50) NOAA Big Data Project (31:30) Establishing trust in group projects (34:45 and 37:45) The challenges of 2020 (37:50) Open Commons Consortium and Cancer Moonshot (49:20) The why and how of career shifts (52:00) First Street Foundation (54:00) Changing people’s minds about climate change More meaningful activities that just providing data https://floodfactor.com/Making effective data tools Not about prediction, but response (01:02:00) Humanity’s biggest advantage (01:07:00) Quantifying the risk due to and making decisions about climate change (01:12:00) Jenny Odell - art is being the orchestrator of attention (01:13:30) Giorgia Lupi episode Aoife Van Linden Tol episode What makes us human (01:14:00) Lightning round (01:15:00) Book: The Information (James Gleick) ChaosPassion: family and outdoors together Heart sing: fire risk Screwed up: learning to say when he didn’t know something Find guest online: LinkedIn: linkedin.com/in/edwardkearns Twitter: @edward_j_kearns 'Five-Cut Fridays’ five-song music playlist series Ed’s playlist

En nouvelle diffusion: Dès 2050, la glace de la banquise arctique pourrait régulièrement disparaître totalement à la fin de lʹété. C'est le résultat dʹune quarantaine de modèles climatiques utilisant quatre scénarios différents. Les détails avec David Docquier, chercheur au centre Rossby, le Centre dʹétudes climatiques de lʹInstitut suédois de météorologie et hydrologie, au micro de Silvio Dolzan. Des femelles alpha qui dominent au sein dʹun groupe, cʹest possible et ce dʹautant plus que le nombre de mâles est plus élevé que le nombre de femelles. Cʹest la conclusion dʹune étude sur le mécanisme de domination réalisée chez les singes Vervets en Afrique du Sud. On en parle avec la primatologue Erica van de Waal, professeure assistante au Département dʹécologie et évolution de l'Université de Lausanne (Unil). Un dossier de Cécile Guérin. Le centre de calcul du CERN ne stocke pas seulement des informations utiles aux physiciens, mais aussi des images satellites. Celles d'UNOSAT, un programme de l'Institut des Nations unies pour la formation et la recherche, sont extrêmement importantes, principalement lors de conflits et de catastrophes naturelles. Elles permettent, par exemple, dʹaider à organiser lʹaide humanitaire. On en parle avec Einar Bjorgo, directeur d'UNOSAT, rencontré par Huma Khamis.

Is warm weather to Europe, North America's greatest export? Listen to the science conversation between Tim Woollings, Associate Professor at the University of Oxford, and Stephen Outten and Ingjald Pilskog podcast hosts and researchers at the Bjerknes Centre. Dr. Tim Woollings, has been visiting researcher at the Bjerknes Centre for Climate Research the last months. He is an expert in jet streams and large scale atmospheric dynamics.  The scientists discuss how the jet stream causes heat waves and cold periods, how the jet stream is affected by a changing climate and how the tropics and the Arctic pushes the jet northwards and southwards. Fasten your seatbelts and join a trip with the jet stream around the globe, southwards along the Rocky Mountains and free and variable northeast bound across the North Atlantic. Warning: This episode contains meteorological terms - be ware of terms like Rossby waves, eddy-driven jet, blocking and polar front!

Dès 2050, la glace de la banquise arctique pourrait régulièrement disparaître totalement à la fin de lʹété. C'est le résultat dʹune quarantaine de modèles climatiques utilisant quatre scénarios différents. Les détails avec David Docquier, chercheur au centre Rossby, le Centre dʹétudes climatiques de lʹInstitut suédois de météorologie et hydrologie, au micro de Silvio Dolzan.

Bienvenidos a CLT, el podcast. Un espacio dedicado a divulgar la ciencia meteorológica donde podrás aprender de una forma sencilla y amena cómo funciona el tiempo en nuestra Casa Tierra. En el capítulo de hoy estreno sección de opinión, a modo de editorial. Además repasaremos dos conceptos muy usados en los informativos meteorológicos: las dorsales y las vaguadas, cómo se forman (ondas de Rossby o planetarias) y cómo nos afectan. En "Recomendaciones" repasamos el trabajo de César Rodriguez Ballesteros, y su pasión por los mapas y los datos climatológicos. Es @crballesteros en twitter y su blog es https://climaenmapas.blogspot.com/ Sintonías: Reckless by Dysfunction_AL (c) copyright 2016 Licensed under a Creative Commons Attribution (3.0) license. https://dig.ccmixter.org/files/destinazione_altrove/54482 Ft: Blue_Wave_Theory.

Det är stor skillnad på de bästa och värsta prognoserna för klimatet på flera hundra års sikt. Varför är det så svårt att räkna ut klimatkänsligheten? När FN:s klimatpanel, IPCC, sätter siffror på framtidens uppvärmning är intervallet stort den beräknas till mellan 1,5 och 4,5 grader om vi fördubblar mängden koldioxid i atmosfären jämfört med tiden före industrialiseringen. Enskilda studier kan peka på både större och mindre temperaturökning. Vetandets värld reder ut vad siffrorna betyder, varför de kan variera så och om forskarna snart kan ge bättre besked. Medverkande: Erik Kjellström, professor i klimatologi på SMHI, Ralf Döscher, chef för Rossby center på SMHI, David Lindstedt, klimatforskare på SMHI, Frida Bender, docent och lektor på meteorologiska institutionen vid Stockholms universitet, Thorsten Mauritsen, lektor på meteorologiska institutionen vid Stockholms universitet. Programledare: Malin Avenius Producent: Camilla Widebeck camilla.widebeck@sverigesradio.se

Au programme : Humour de notre enfance, souris qui dominent le monde, Rossby & Marshey

The Coriolis force is a force in physics that has profound impact on us here on Earth. Listen to hear how this apparent force has influence over the weather, tides, and even some creatures. I refuse to talk about the formulas surrounding it but I will discuss Rossby numbers, Kelvin waves, Ekman transport, and the Eötvös effect, so get ready for a lot of scientist names!

This is a book about the future – the historical future as three interconnected generations of atmospheric researchers experienced it and envisioned it in the first part of the twentieth century. James Rodger Fleming's new book is a big picture history of atmospheric science that follows the lives and careers of three men who worked at the center of meteorological research in roughly the first half of the 20th century: Vilhelm Bjerknes, Carl-Gustav Rossby, and Harry Wexler. Though it takes these three figures as orienting tools, Inventing Atmospheric Science: Bjerknes, Rossby, Wexler, and the Foundations of Modern Meteorology (MIT Press, 2016) this is not a biography of three lone geniuses: Fleming is careful to show that the emergence of atmospheric science was a team effort and the result of work by many people in different disciplines and areas. Fleming's use of archival materials allows readers to appreciate the significance and roles of otherwise-overlooked or ignored historical figures, including Anne Louise Beck (who we discuss in the course of the podcast). Inventing Atmospheric Science weaves together the histories of technology, mathematics, hydrodynamics, the aerospace industry, global pollution, climatology, chaos theory, the US Weather Bureau, and much more into a clear and engaging story thats also a pleasure to read. Learn more about your ad choices. Visit megaphone.fm/adchoices

This is a book about the future – the historical future as three interconnected generations of atmospheric researchers experienced it and envisioned it in the first part of the twentieth century. James Rodger Fleming’s new book is a big picture history of atmospheric science that follows the lives and careers of three men who worked at the center of meteorological research in roughly the first half of the 20th century: Vilhelm Bjerknes, Carl-Gustav Rossby, and Harry Wexler. Though it takes these three figures as orienting tools, Inventing Atmospheric Science: Bjerknes, Rossby, Wexler, and the Foundations of Modern Meteorology (MIT Press, 2016) this is not a biography of three lone geniuses: Fleming is careful to show that the emergence of atmospheric science was a team effort and the result of work by many people in different disciplines and areas. Fleming’s use of archival materials allows readers to appreciate the significance and roles of otherwise-overlooked or ignored historical figures, including Anne Louise Beck (who we discuss in the course of the podcast). Inventing Atmospheric Science weaves together the histories of technology, mathematics, hydrodynamics, the aerospace industry, global pollution, climatology, chaos theory, the US Weather Bureau, and much more into a clear and engaging story thats also a pleasure to read. Learn more about your ad choices. Visit megaphone.fm/adchoices

This is a book about the future – the historical future as three interconnected generations of atmospheric researchers experienced it and envisioned it in the first part of the twentieth century. James Rodger Fleming’s new book is a big picture history of atmospheric science that follows the lives and careers of three men who worked at the center of meteorological research in roughly the first half of the 20th century: Vilhelm Bjerknes, Carl-Gustav Rossby, and Harry Wexler. Though it takes these three figures as orienting tools, Inventing Atmospheric Science: Bjerknes, Rossby, Wexler, and the Foundations of Modern Meteorology (MIT Press, 2016) this is not a biography of three lone geniuses: Fleming is careful to show that the emergence of atmospheric science was a team effort and the result of work by many people in different disciplines and areas. Fleming’s use of archival materials allows readers to appreciate the significance and roles of otherwise-overlooked or ignored historical figures, including Anne Louise Beck (who we discuss in the course of the podcast). Inventing Atmospheric Science weaves together the histories of technology, mathematics, hydrodynamics, the aerospace industry, global pollution, climatology, chaos theory, the US Weather Bureau, and much more into a clear and engaging story thats also a pleasure to read. Learn more about your ad choices. Visit megaphone.fm/adchoices

This is a book about the future – the historical future as three interconnected generations of atmospheric researchers experienced it and envisioned it in the first part of the twentieth century. James Rodger Fleming’s new book is a big picture history of atmospheric science that follows the lives and careers of three men who worked at the center of meteorological research in roughly the first half of the 20th century: Vilhelm Bjerknes, Carl-Gustav Rossby, and Harry Wexler. Though it takes these three figures as orienting tools, Inventing Atmospheric Science: Bjerknes, Rossby, Wexler, and the Foundations of Modern Meteorology (MIT Press, 2016) this is not a biography of three lone geniuses: Fleming is careful to show that the emergence of atmospheric science was a team effort and the result of work by many people in different disciplines and areas. Fleming’s use of archival materials allows readers to appreciate the significance and roles of otherwise-overlooked or ignored historical figures, including Anne Louise Beck (who we discuss in the course of the podcast). Inventing Atmospheric Science weaves together the histories of technology, mathematics, hydrodynamics, the aerospace industry, global pollution, climatology, chaos theory, the US Weather Bureau, and much more into a clear and engaging story thats also a pleasure to read. Learn more about your ad choices. Visit megaphone.fm/adchoices

This is a book about the future – the historical future as three interconnected generations of atmospheric researchers experienced it and envisioned it in the first part of the twentieth century. James Rodger Fleming’s new book is a big picture history of atmospheric science that follows the lives and careers of three men who worked at the center of meteorological research in roughly the first half of the 20th century: Vilhelm Bjerknes, Carl-Gustav Rossby, and Harry Wexler. Though it takes these three figures as orienting tools, Inventing Atmospheric Science: Bjerknes, Rossby, Wexler, and the Foundations of Modern Meteorology (MIT Press, 2016) this is not a biography of three lone geniuses: Fleming is careful to show that the emergence of atmospheric science was a team effort and the result of work by many people in different disciplines and areas. Fleming’s use of archival materials allows readers to appreciate the significance and roles of otherwise-overlooked or ignored historical figures, including Anne Louise Beck (who we discuss in the course of the podcast). Inventing Atmospheric Science weaves together the histories of technology, mathematics, hydrodynamics, the aerospace industry, global pollution, climatology, chaos theory, the US Weather Bureau, and much more into a clear and engaging story thats also a pleasure to read. Learn more about your ad choices. Visit megaphone.fm/adchoices

This is a book about the future – the historical future as three interconnected generations of atmospheric researchers experienced it and envisioned it in the first part of the twentieth century. James Rodger Fleming’s new book is a big picture history of atmospheric science that follows the lives and careers of three men who worked at the center of meteorological research in roughly the first half of the 20th century: Vilhelm Bjerknes, Carl-Gustav Rossby, and Harry Wexler. Though it takes these three figures as orienting tools, Inventing Atmospheric Science: Bjerknes, Rossby, Wexler, and the Foundations of Modern Meteorology (MIT Press, 2016) this is not a biography of three lone geniuses: Fleming is careful to show that the emergence of atmospheric science was a team effort and the result of work by many people in different disciplines and areas. Fleming’s use of archival materials allows readers to appreciate the significance and roles of otherwise-overlooked or ignored historical figures, including Anne Louise Beck (who we discuss in the course of the podcast). Inventing Atmospheric Science weaves together the histories of technology, mathematics, hydrodynamics, the aerospace industry, global pollution, climatology, chaos theory, the US Weather Bureau, and much more into a clear and engaging story thats also a pleasure to read. Learn more about your ad choices. Visit megaphone.fm/adchoices

This is a book about the future – the historical future as three interconnected generations of atmospheric researchers experienced it and envisioned it in the first part of the twentieth century. James Rodger Fleming’s new book is a big picture history of atmospheric science that follows the lives and careers... Learn more about your ad choices. Visit megaphone.fm/adchoices

Extremväder kopplas inte sällan till klimatförändringar, samtidigt säger klimatforskare att enskilda väderhändelser inte kan förklaras av klimatförändringar. Vad säger den senaste forskningen? Länge har forskarna varit försiktiga med att förklara enskilda extrema väderhändelser som stormar, störtregn, översvämningar och skogsbränder med de pågående klimatförändringarna. Svaret brukar bli att det inte går att koppla enskilda händelser till ett förändrat klimat, men att den sortens händelser passar väl in i den trend som klimatforskarna förutspår i framtiden.På senaste tiden har det dock kommit flera studier som gör kopplingen mellan exempelvis extrem värme i Australien, eller de stora översvämningarna i England för några år sedan, med klimatförändringar. Ett nytt forskningsprojekt har dragits igång för att hjälpa europeiska forskare att snabbare och säkrare kunna ge allmänheten svar på frågan: beror det här på den globala uppvärmningen eller inte? Medverkande: Staffan Sonning, SR:s korrespondent i London, Johan Lidberg, medieforskare på School of Media, Film and Journalism vid Monash University i Melbourne, Richard Betts, professor vid MET office, Storbritannien och Erik Kjellström, meteorolog och klimatforskare vid Rossby center, SMHI. Programledare Marie-Louise Kristola

Prof. Jeffrey Shaman thinks he has discovered something big...but no one will look at his paper. Jeffrey Shaman is an infectious disease modeler at the Mailman School of Public Health of Columbia University. His background is in climate, atmospheric science and hydrology, as well as biology. He studies the environmental determinants of infectious disease transmission, in particular, how atmospheric conditions impact the survival, transmission and seasonality of pathogens and how hydrologic variability affects mosquito ecology and mosquito-borne disease transmission. More broadly he is interested in how meteorology affects human health. Much of his work is computational, employing combined model-inference systems to forecast infectious disease outbreaks at a range of time scales. Shaman also studies a number of climate phenomena, including Rossby wave dynamics, atmospheric jet waveguides, the coupled South Asian monsoon-ENSO system, extratropical precipitation, and tropical cyclogenesis.

Gallagher, I (Université Paris 7 - Denis-Diderot) Monday 02 December 2013, 09:15-10:15

Brunet, G (Weather Science, Met Office) Monday 28 October 2013, 11:00-12:00