The Knowledge Factory - Sur le même thème https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/the-brazilian-amazon-rainforest-has-been-losing-its-carbon-stock-over-the-past-decade.aspx DRF english version en-US https://www.cea.fr/_layouts/15/images/i2i/icon-144x144-1033.png The Knowledge Factory - Sur le même thème https://www.cea.fr/drf/english Solar Orbiter has confirmed the existence of magnetic fields ejected by the Sun https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/solar-orbiter-has-confirmed-the-existence-of-magnetic-fields-ejected-by-the-sun.aspx Using advanced computational simulations, physicists from the CEA-Irfu, as part of an international collaboration, have simulated the complex relationships between the convective cells on the surface of the Sun and the Sun’s magnetic field, which together contribute to the overall heating and acceleration of the solar wind. Stars ; Satellites ; Telescope ; Simulation & modelling general public ; Journalists ; Researchers Irfu Découvertes et avancées ; Scientific result Thu, 13 Oct 2022 10:00:00 GMT Shifting the acidity peak from winter to summer in the Arctic Ocean and the threat to its ecosystem https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/shifting-the-acidity-peak-from-winter-to-summer-in-the-arctic-ocean-and-the-threat-to-its-ecosystem.aspx A Franco-German study coordinated by the LSCE (CEA-CNRS-UVSQ) estimates that climate change could shift the peak in Arctic Ocean acidity from winter to summer, which would be disruptive to the ecosystem. Impact of climate change ; Oceanography ; Climate general public ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Wed, 05 Oct 2022 10:00:00 GMT James Webb: first images of an exoplanet in the mid-infrared https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/james-webb-first-images-of-an-exoplanet-in-the-mid-infrared.aspx Nine months after its launch, the James Webb Space Telescope (JWST) has provided unprecedented images of an exoplanet. The first ever obtained in the mid-infrared, these images should revolutionize our knowledge of extrasolar planets. French astronomers, including some from the CEA-Irfu, participated in observing this planet and in designing the telescope coronagraphs. Satellites ; Telescope ; Astrophysics ; Planets general public ; Journalists ; Researchers Irfu Découvertes et avancées ; Scientific result Tue, 20 Sep 2022 10:00:00 GMT Climate change could greatly diminish the effectiveness of biomass-based CO2 capture technologies https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/climate-change-could-greatly-diminish-the-effectiveness-of-biomass-based-co-capture-technologies.aspx An international collaboration involving the LSCE (CEA-CNRS-UVSQ) recommends the earliest possible deployment of these technologies on a large scale. If postponed to the latter half of this century, the available biomass production would be largely reduced by climate change, jeopardizing the goal of containing global warming to 2°C by 2100, and potentially leading to food shortages. Climate general public ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Thu, 08 Sep 2022 10:00:00 GMT Extreme fire events: how Australia’s forests are rising from the ashes https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/Extreme-fire-events-how-Australia’s-forests-are-rising-from-the-ashes.aspx Climate ; Environment Press release ; News Thu, 08 Sep 2022 10:00:00 GMT Plutonium isotopy as a dating tool to reconstruct the recent history of land use in South America https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/plutonium-isotopy-as-a-dating-tool-to-reconstruct-the-recent-history-of-land-use-in-south-america.aspx A French-South American consortium led by the LSCE (CEA-CNRS-UVSQ) is working to explain the chronology and spatial distribution of radionuclides deposited in South America following atmospheric nuclear testing. Their research, based on measurements of plutonium isotopes in soil and sediment samples, will enable the precise reconstruction of the evolution in land use since the 1960s. Environment ; Agronomy ; Radioactivity ; Dating ; Impact of climate change general public ; Journalists ; Researchers LSCE Scientific result ; Découvertes et avancées Mon, 11 Jul 2022 10:00:00 GMT The world’s largest CO2 emitters can now be identified by satellite https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/the-worlds-largest-emitters-can-now-be-identified-by-satellite.aspx For the first time ever, an international collaboration involving the LSCE (CEA-CNRS-UVSQ) is providing a global view of large CO2 plumes attributable to fossil fuels through satellite observations. Greenhouse effect ; Climate ; Satellites general public ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Tue, 19 Apr 2022 10:00:00 GMT Using genomics to shed a light on climate https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/using-genomics-to-shed-a-light-on-climate.aspx Using metagenomic analysis, researchers from the CEA-Jacob/Genoscope and the LSCE (CEA-CNRS-UVSQ) have unveiled a “biogeography” of ocean plankton communities. Based on this work, they predict the evolution of their geographical distribution by 2100, with a reduction in the flux of organic carbon from surface waters to the depths. Climate ; Oceanography ; Carbon cycle ; Large-scale biology ; Metagenomics general public ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Tue, 05 Apr 2022 10:00:00 GMT Certain millet genotypes store more carbon in the soil than others https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/certain-millet-genotypes-store-more-carbon-in-the-soil-than-others.aspx Relying on isotopic measurements, a collaboration involving BIAM (CEA-CNRS-AMU) and the LSCE (CEA-CNRS-UVSQ) has succeeded in quantifying the amount of carbon released into the soil by the roots of millet after only a few weeks of growth. The researchers were thus able to identify millet genotypes (lines) that offer optimal carbon storage while preserving the older carbon stocks already present in the soil. Environment ; Carbon cycle ; Agronomy general public ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Tue, 15 Mar 2022 11:00:00 GMT Discovery of significant methane leaks linked to the oil and gas industry https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/discovery-of-significant-methane-leaks-linked-to-the-oil-and-gas-industry.aspx A new international study coordinated by the LSCE (CEA-CNRS-UVSQ) has revealed hundreds of very large methane leaks from oil and gas production facilities. This work draws on data collected by the European satellite Sentinel-5P. Greenhouse effect ; Impact of climate change general public ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Fri, 04 Feb 2022 11:00:00 GMT SVOM: the MXT X-ray telescope is ready for service! https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/svom-the-mxt-telescope-is-ready-for-service.aspx The X-ray space telescope, which was provided by France for the SVOM space mission, and for which the CEA-Irfu made a significant contribution, is now operational! The launch of the Franco-Chinese satellite is scheduled for 2023. Telescope ; Satellites ; Astrophysics general public ; Journalists ; Researchers Irfu Découvertes et avancées ; Scientific result Thu, 27 Jan 2022 11:00:00 GMT The effectiveness of bioenergy crops must be properly assessed https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/the-effectiveness-of-bioenergy-crops-must-be-properly-assessed.aspx According to a collaboration coordinated by the LSCE (CEA-CNRS-UVSQ), it is necessary to take into account the biophysical effects of bioenergy crops (including CO2 capture and sequestration) in order to properly assess their effectiveness in the fight against climate change. Bioenergy ; Climate ; Climatic models general public ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Tue, 21 Dec 2021 11:00:00 GMT A global compilation of marine and continental sediment cores dated by cesium-137 and lead-210 https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/a-global-compilation-of-marine-and-continental-sediment-cores-dated-by-cesium-and-lead.aspx The LSCE (CEA-CNRS-UVSQ) and the EDYTEM laboratory (CNRS - Université Savoie Mont Blanc - Ministère de la Culture) have established a comprehensive overview of cesium-137 fallout observed in sedimentary archives around the world. This database makes it possible to improve the dating of sedimentary cores. Environment ; Dating ; Climate general public ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Fri, 03 Dec 2021 11:00:00 GMT Biomass Carbon Monitor: a new tool for monitoring carbon exchanges between forests and the atmosphere around the world https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/biomass-carbon-monitor-a-new-tool-for-monitoring-carbon-exchanges-between-forests-and-the-atmosphere-around-the-world.aspx The firm Kayrros and its partners, the LSCE (CEA-CNRS-UVSQ) and INRAE, are launching the first measurement platform to monitor, on a regional scale, the capacity of forests to reduce atmospheric CO2. These open access data are based on spatial observations of biomass and capitalize on nearly 30 years of research. Carbon cycle ; Greenhouse effect ; Climate Companies ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Fri, 29 Oct 2021 10:00:00 GMT CO2 emissions have nearly returned to pre-pandemic levels https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/emissions-have-nearly-returned-to-pre-pandemic-levels.aspx Ahead of the opening of the 26th Conference of the Parties (COP 26) of the United Nations Framework Convention on Climate Change in Glasgow, Scotland, the latest estimates from Carbon Monitor – an international research initiative launched during the pandemic involving Tsinghua University (China), the LSCE (CEA-CNRS-UVSQ) and University of California, Irvine – show that global CO2 emissions at the end of September 2021 snapped back from 2020, and were only 1% lower than emissions at the same time in 2019. Carbon cycle ; Greenhouse effect ; Climate general public ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Wed, 27 Oct 2021 10:00:00 GMT Climate: N2O emissions from soil can be effectively reduced https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/climate--emissions-from-soil-can-be-effectively-reduced.aspx According to a Peking University study involving the LSCE (CEA-CNRS-UVSQ), there are “hot spots” of soil-based emissions of nitrous oxide (N2O), a very powerful greenhouse gas. Just by focusing on those soils that receive excessive nitrogen fertilizer deposits, it should be possible to reduce total nitrous oxide emissions from soils by nearly 20%. Climate ; Agronomy ; Climatic models general public ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Fri, 22 Oct 2021 10:00:00 GMT Climate change increased the likelihood of damaging frosts from the French April 2021 cold wave by about 60% https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/Climate-change-increased-the-likelihood-of-damaging-frosts-from-the-French-April-2021-cold-wave-by-about-60.aspx Climate ; Environment Press release ; News ; Focus Fri, 18 Jun 2021 10:00:00 GMT Alpaga : the search for mountain snow microalgae https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/ALPALGA-the-search-for-mountain-snow-microalgae.aspx Environment ; Biodiversity ; Climate ; Impact of climate change News ; Press release ; Focus CEA;Mountain;Snow;UGA;CNRS;microalgue;inrae; Mon, 07 Jun 2021 10:00:00 GMT Tracking cosmic explosions with a “lobster eye” https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/tracking-cosmic-explosions-with-a-lobster-eye.aspx Coupled to a novel multi-pore optic inspired by the vision of some crustaceans, the X-ray camera to be used in the MXT telescope of the Franco-Chinese satellite SVOM was designed and assembled by the Irfu and recently delivered to the Cnes. SVOM is scheduled for launch in late 2022. Tools & research instruments ; Satellites ; Telescope ; Characterisation general public ; Journalists ; Researchers Irfu Découvertes et avancées ; Scientific result Thu, 03 Jun 2021 10:00:00 GMT Optimizing the cost of greenhouse gas mitigation by adjusting CO2 equivalents https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/optimizing-the-cost-of-greenhouse-gas-mitigation-by-adjusting-co-equivalents.aspx Different greenhouse gases do not have the same levels of persistence in the atmosphere. The calculation of their CO2 equivalent emissions therefore depends on the time periods in question. According to a collaboration led by the LSCE (CEA-CNRS-UVSQ), adjusting these durations will make it possible to better identify the most economically advantageous policies for reducing warming. Greenhouse effect ; Impact of climate change ; Climate general public ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Mon, 31 May 2021 10:00:00 GMT The Brazilian Amazon rainforest has been losing its carbon stock over the past decade https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/the-brazilian-amazon-rainforest-has-been-losing-its-carbon-stock-over-the-past-decade.aspx According to a study involving scientists from the University of Oklahoma (USA), INRAE and the LSCE (CEA-CNRS-UVSQ), the Brazilian Amazon rainforest has released more carbon than it has absorbed over the last ten years. The cause: the degradation of the forest due to human activities and climate change. Carbon cycle ; Impact of climate change ; Climate ; Satellites general public ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Fri, 30 Apr 2021 10:00:00 GMT What are the contributions of different countries to climate change? https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/what-are-the-contributions-of-different-countries-to-climate-change.aspx An international collaboration of climate researchers including the LSCE (CEA-CNRS-UVSQ) is using a model of the Earth System to determine the different regional contributions to global warming, as well as the individual factors that modify and amplify it, such as CO2 emissions, or, on the opposite, by temporarily attenuating it, such as aerosols. This model represents a valuable tool for implementing a responsible climate policy. Climate ; Climatic models general public ; Journalists ; Researchers Découvertes et avancées ; Scientific result Tue, 06 Apr 2021 10:00:00 GMT Arctic: Where do wet air masses come from in winter? https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/arctic--where-do-wet-air-masses-come-from-in-winter.aspx Thanks to the first full-length record of the isotopic composition of water vapor from Svalbard (Norway), climatologists at LSCE (CEA-CNRS-UVSQ) documented the origin of winter air masses during peak moisture events. Climate ; Laser general public ; Journalists ; Researchers LSCE Scientific result Thu, 18 Mar 2021 11:00:00 GMT Mapping radioactive fallout from atmospheric nuclear tests to study soils in South America https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/mapping-radioactive-fallout-from-atmospheric-nuclear-tests-to-study-soils-in-south-america.aspx A collaboration between the LSCE (CEA-CNRS-UVSQ), the INRAE and Brazilian and Uruguayan universities established a first map of radioactive cesium deposits, following the nuclear tests of the 1960s. This map is a reference for sciences, which will allow the of soil erosion and redistribution in South America. Environment ; Agronomy ; Climate general public ; Journalists ; Researchers LSCE Scientific result Fri, 12 Feb 2021 11:00:00 GMT Paleoclimatic simulations PMIP4: First analyses https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/paleoclimatic-simulations-pmip--first-analyses.aspx The PMIP (Paleoclimate Modelling Intercomparison Project) collaboration publishes the first results of its 4th "phase", for the study of the climates of the Middle Holocene (6,000 years ago) and the last interglacial (127,000 years ago). These periods are characterized by a greater than average seasonality in the northern hemisphere, which increases the amplitude of the seasonal cycle of boreal temperatures and strengthens the monsoons in the north. Paleoclimates ; Climatic models ; Climate general public ; Journalists ; Researchers LSCE Scientific result ; International Mon, 08 Feb 2021 11:00:00 GMT North-South Prize of the Council of Europe: the “Mediterranean IPCC” sounds the alarm! https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/north-south-prize-of-the-council-of-europe-the-mediterranean-ipcc-sounds-the-alarm.aspx Created in 2015, the independent network MedECC (Mediterranean Experts on Climate and Environmental Change) has published its first evaluation report, MAR1 (Mediterranean Assessment Report), accompanied by a summary for policy-makers. This publication earned the group the Council of Europe’s North-South 2020 Prize. Read on for a close-up on ‘Ecosystems’, a chapter from the report that features an LSCE researcher as “lead author”. Climate ; Impact of climate change ; Environment general public ; Journalists ; Researchers LSCE Prizes and awards ; Scientific result ; Europe Wed, 13 Jan 2021 11:00:00 GMT Ocean circulation would have contributed to the first colonization of North America https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/ocean-circulation-would-have-contributed-to-the-first-colonization-of-north-america.aspx According to an international study involving researchers from the LSCE (CEA-CNRS-UVSQ), a significant change in ocean currents in the North Pacific would have favored the first human migration from Asia to North America, at the end of the last ice age. Paleoclimates ; Climatic models ; Oceanography general public ; Journalists ; Researchers LSCE Scientific result Thu, 10 Dec 2020 11:00:00 GMT ESA adopts Ariel mission dedicated to the study of exoplanet atmospheres https://www.cea.fr/drf/english/Pages/News/Institutional-news/2020/ESA-adopts-Ariel-mission-dedicated-to-the-study-of-exoplanet-atmospheres.aspx Planets ; Satellites ; Telescope Press release ; News Fri, 20 Nov 2020 11:00:00 GMT Polar ice caps: how high will the sea level rise? https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/polar-ice-caps-how-high-will-the-sea-level-rise.aspx Publication of a large set of interdisciplinary simulations to which researchers from LSCE (CEA-CNRS-UVSQ) have contributed offers an opportunity to assess the future impact of the melting of the polar ice caps. What are the trends and uncertainties? Impact of climate change ; Climatic models general public ; Journalists ; Researchers LSCE Scientific result ; International Fri, 18 Sep 2020 10:00:00 GMT The low value of climate sensitivity is revised upwards https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/the-low-value-of-climate-sensitivity-is-revised-upwards-.aspx According to an international collaboration involving the LSCE (CEA-CNRS-UVSQ), the doubling of atmospheric CO2 content compared to the pre-industrial era would “probably” warm the earth between 2.6°C to 3.9°C. This assessment – the best to date – is based on three independent data sources that do not use climate models. Climatic models ; Climate ; Impact of climate change general public ; Journalists ; Researchers LSCE Scientific result ; International Thu, 30 Jul 2020 10:00:00 GMT Reducing cultivated land area by half in the interest of climate and biodiversity https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/reducing-cultivated-land-area-by-half-in-the-interest-of-climate-and-biodiversity.aspx An international collaboration involving the LSCE (CEA-CNRS-UVSQ) is proposing an agronomic scenario that is beneficial for the climate and biodiversity: cultivated areas reduced by half, without changing the input volumes, could be as productive as they are today if our practices are revised on a global scale. Agronomy ; Environment ; Climate ; Biodiversity general public ; Journalists ; Researchers LSCE Scientific result Tue, 05 May 2020 10:00:00 GMT What will the wind do in the coming decades? https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/What-will-the-wind-do-in-the-coming-decades.aspx According to an international study involving the LSCE, a reversal in the trend of terrestrial wind potential was observed in 2010. Its correlation with well-identified climatic mechanisms suggests the potential to optimize wind generation throughout the lifetime of facilities. Climate ; Renewable energies general public ; Journalists ; Researchers LSCE Scientific result ; International Tue, 19 Nov 2019 11:00:00 GMT The Tara Oceans mission reveals variations in plankton biodiversity and activity from the equator to the poles https://www.cea.fr/drf/english/Pages/News/Scientific-results/2019/The-Tara-Oceans-mission-reveals-variations-in-plankton-biodiversity-and-activity-from-the-equator-to-the-poles.aspx New results from the Tara Oceans expedition, led by a collaboration between the Tara Ocean Foundation and teams from the CNRS, EMBL, CEA, Sorbonne Université and Université Paris Science Lettres between 2009 and 2013 show that the diversity and functions of planktonic species in the global ocean change dramatically according to latitude. Biodiversity ; Genomics ; Environment ; Climate Companies ; general public ; Institutions ; Journalists ; Researchers Jacob Scientific result Mon, 18 Nov 2019 11:00:00 GMT The Arctic Ocean, cradle of viral biodiversity https://www.cea.fr/drf/english/Pages/News/Scientific-results/2019/The-Arctic-Ocean,-cradle-of-viral-biodiversity.aspx Fundamental Research ; Cellular mechanisms ; Impact of climate change ; Climate ; Oceanography Press release ; Scientific result ; Focus Mon, 29 Apr 2019 10:00:00 GMT Southern CO2 versus Northern CO2: the Northern vegetation makes the difference https://www.cea.fr/drf/english/Pages/News/Scientific-results/2019/southern-co-versus-northern-co-the-northern-vegetation-makes-the-difference.aspx A team of international researchers coordinated by the LSCE has been able to retrace for the first time the evolution of the Northern Hemisphere land carbon sink over more than five decades, based on differential CO2 measurements collected since 1958 in both hemispheres. This is a precious indicator to understand how to encourage carbon sequestration in the ground and the biomass. Carbon cycle ; Climatic models ; Greenhouse effect ; Impact of climate change general public ; Journalists ; Researchers LSCE Scientific result Thu, 04 Apr 2019 10:00:00 GMT VERIFYing greenhouse gas emissions monitoring https://www.cea.fr/drf/english/Pages/News/Institutional-news/2018/VERIFYing-greenhouse-gas-emissions-monitoring.aspx The European project VERIFY, coordinated by the CEA, aims to provide the European Commission with a system to monitor greenhouse gas emissions declarations submitted by each country under the United Nations Framework Convention on climate change. Environment ; Climate ; Recovery of CO2 ; Carbon cycle ; Greenhouse effect ; Impact of climate change ; Science & society ; Tools & research instruments Journalists ; Researchers ; general public ; Companies LSCE News ; Newsletter ; CEA Research News ; European & international partnerships Greenhouse;energy union and climate;H2020;Paris clilmate change agreement;IPCC;greenhouse gas emissions; Tue, 10 Apr 2018 10:00:00 GMT Ocean acidity: what impact will greater seasonal variations have? https://www.cea.fr/drf/english/Pages/News/Scientific-results/2018/Ocean-acidity-what-impact-will-greater-seasonal-variations-have.aspx According to an international collaboration involving the LSCE, seasonal variations in ocean acidity will be more pronounced at the end of the century than today and could even double. The seasonality of pH, until now considered favorable to the adaptation of marine organisms to global warming, could then prove to have a deleterious effect. This must now be taken into account in climate models. Impact of climate change Researchers ; general public ; Journalists LSCE Scientific result Fri, 02 Feb 2018 11:00:00 GMT New developments in plant resistance to drought https://www.cea.fr/drf/english/Pages/News/Scientific-results/2018/New-developments-in-plant-resistance-to-drought.aspx Plant stomata open or close in response to their needs, in addition to water stress or pathogen attack. A team from the Biam and its partners have demonstrated the role of the protein AQP in stomatal closure movements. Vegetal physiology ; Climate general public ; Journalists ; Researchers BIAM Scientific result Mon, 29 Jan 2018 11:00:00 GMT An industrial chair for the monitoring of greenhouse gas emissions https://www.cea.fr/drf/english/Pages/News/Scientific-results/2018/Launch-of-the--Trace-industrial-chair-for-the-monitoring-of-greenhouse-gas-emissions.aspx The Trace industrial chair aims to develop better monitoring methodologies of greenhouse gas emissions (carbon dioxide and methane) by satellite and with the help of new sensors deployed close to methane-emitting sites. Climate ; Energies ; Environment Institutions ; Journalists ; Researchers ; Partners ; Suppliers DRF Valorisation Press release ; Focus Thu, 18 Jan 2018 11:00:00 GMT Carbon storage in the ocean: diatoms are under surveillance! https://www.cea.fr/drf/english/Pages/News/Scientific-results/2018/Carbon-storage-in-the-ocean-diatoms-are-under-surveillance.aspx An in-depth study of microalgae with a siliceous cell wall (i.e. diatoms) emphasizes that their role in carbon sequestration in the ocean depths has been underestimated and may decline in the coming decades. This prognosis could be affected by the evolution of these species. Oceanography ; Climate Researchers ; general public ; Journalists LSCE Scientific result Mon, 15 Jan 2018 08:00:00 GMT When the Earth was a “snowball” https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/when-the-earth-was-a-snowball.aspx An international collaboration has published a synopsis of two climatic episodes during which the Earth was covered in ice and snow. This report takes stock of more than 35 years of scientific questioning regarding the functioning of a “snowball” Earth. Paleoclimates Researchers ; general public ; Journalists LSCE Highlight Mon, 13 Nov 2017 11:00:00 GMT The 2017 Heat waves in Europe Are a Signature of Global Warming https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/the-2017-heat-waves-in-europe-are-a-signature-of-global-warming.aspx The heat waves experienced in Europe in 2017 were a result of global warming induced by human activities. Every summer, there is now a 10% chance of seeing a summer as hot as 2017, as shown by an international collaboration involving researchers from LSCE. Climate Researchers ; general public ; Journalists LSCE Scientific result Fri, 20 Oct 2017 10:00:00 GMT Earthworms Set the Tempo of the Last Glaciation https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/earthworms-set-the-tempo-of-the-last-glaciation.aspx Through the radiocarbon dating of calcite granules secreted by earthworms, a multidisciplinary team involving LSCE proposed the first precise chronological framework for all thawing phases in the last glacial period. Paleoclimates Researchers ; general public ; Journalists LSCE Scientific result loess;gleys;carotte glaciaire;événement de Dansgaard–Oeschger;datation au carbone 14;Paléoclimat;Ver de terre;sédiments marins;climatologie; Tue, 01 Aug 2017 10:00:00 GMT Climate Change and Coral Skeletons https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/climate-change-and-coral-skeletons.aspx As early as during their larval stage, corals are affected by ocean warming and acidification. Researchers show that exposure of coral larvae, Acropora millepora, to the conditions predicted to prevail by the end of the century weakens and distorts the skeletons of polyps derived from these larvae. Over time, they will have to revise their interpretation of the chemical composition of corals in terms of surface temperature and ocean pH. Climate Researchers ; general public ; Journalists LSCE Scientific result paléoclimatologie;acidité;CO2;Acropora millepora;pH;réchaffement;Australie;récif corallien;corail;biodiversité;dioxyde de carbone; Tue, 04 Jul 2017 10:00:00 GMT How CO2 Emissions Are Affected by the Weather https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/how-co2-emissions-are-affected-by-the-weather.aspx Climate scientists have shown that weather anomalies can exert a significant influence on a country's CO2 emissions and, to a lesser extent, on global emissions. Carbon cycle Researchers ; general public ; Journalists DRF Scientific result Fri, 26 May 2017 10:00:00 GMT A “Statistical Physics” of Extreme Weather Events https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/a-statistical-physics-of-extreme-weather-events.aspx Combining extreme value theory and chaos theory, researchers from LSCE have developed digital tools to determine the quality and rarity of a weather forecast based on atmospheric data collected since 1948. Their near-instantaneous ability to analyze atmospheric circulation could ultimately allow for better prediction of extreme weather events. Climatic models Researchers ; general public ; Journalists DRF Scientific result Tue, 16 May 2017 10:00:00 GMT Rice Yield Losses Expected Under Future Global Warming https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/rice-yield-losses-expected-under-future-global-warming.aspx As the staple food for more than half of the world’s population, rice is expected to drop considerably in yield in the event of significant climate change, necessitating CO2 fertilization and the genetic selection of adaptable species/ Climate ; Impact of climate change ; Simulation & modelling general public ; Journalists ; Researchers LSCE Scientific result Tue, 07 Mar 2017 11:00:00 GMT Global Warming Will Require Increased Irrigation in the US https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/global-warming-will-require-increased-irrigation-in-the-us.aspx According to agronomic and climatological models, maize and soybean yields decline as soon as the temperature exceeds 30°C. Wheat appears to be more resistant. Increased irrigation can help to avoid such loss. Climate ; Impact of climate change ; Simulation & modelling general public ; Journalists ; Researchers LSCE Scientific result Mon, 27 Feb 2017 11:00:00 GMT Where do Flowers Come From? Shedding Light on Darwin’s ‘abominable mystery’ https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/where-do-flowers-come-from-shedding-light-on-darwin-abominable-mystery.aspx The mystery that is the origin of flowering plants has been partially solved. A team from CEA-BIG and their partners have shed light on a question that much intrigued Darwin: the appearance of a structure as complex as the flower over the course of evolution. Climate ; Biodiversity general public ; Journalists ; Researchers BIG Scientific result Fri, 24 Feb 2017 11:00:00 GMT The Consequences of Global Warming on the Wheat Yield in China https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/the-consequences-of-global-warming-on-the-wheat-yield-in-china.aspx According to estimates based on experimental observations and computer simulations, wheat yields in China are expected to be altered by upcoming global warming. Climate ; Impact of climate change ; Simulation & modelling general public ; Journalists ; Researchers LSCE Scientific result Mon, 20 Feb 2017 11:00:00 GMT Isotope Analyses that Strike Gold https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/isotope-analyses-that-strike-gold.aspx A stratigraphic measurement of beryllium-10 in Montalbano Jonico, Italy, has made it possible for the first time to precisely date the boundary between two geologic sub-epochs of the Pleistocene, which is of paramount importance for Earth sciences. This site in Italy should soon be recognized as hosting a Global Stratotype Section and Point, otherwise known as a “Golden Spike”. Paleoclimates ; Environment general public ; Journalists ; Researchers LSCE Scientific result Mon, 06 Feb 2017 11:00:00 GMT Water, the Underlying Driver of the Earth’s Carbon Cycle https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/water-the-underlying-driver-of-the-earth-carbon-cycle.aspx Although the annual carbon footprint seems to be driven by temperature at the global scale, water availability appears to be the dominant factor at the local scale. A study in which LSCE researchers participated sheds new light on this paradox. Climate ; Carbon cycle general public ; Journalists ; Researchers LSCE Scientific result Tue, 17 Jan 2017 11:00:00 GMT "Super-resolution" Images for Radio astronomy https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/super-resolution-images-for-radio-astronomy.aspx A team of researchers from IRFU has developed a very effective image reconstruction technique for radio astronomy. It will benefit the future international network Square Kilometer Array (SKA) in particular, whose construction will start in 2018, and is also expected to find applications in medical imaging and Earth observation. Tools & research instruments ; Satellites ; Astrophysics general public ; Researchers ; Journalists Irfu Scientific result Mon, 09 Jan 2017 11:00:00 GMT Methane Emissions: On the Rise Since 2007 https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/methane-emissions-on-the-rise-since-2007.aspx An international team led by the LSCE has published a complete assessment of methane sources and sinks. After a period of stabilization in the early 2000s, since 2007 a new increase in methane concentrations has been observed by international measurement networks, with a sharp acceleration since 2014. Environment ; Climate general public ; Researchers ; Journalists LSCE Scientific result Fri, 06 Jan 2017 11:00:00 GMT The Oldest Ice on Earth https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/the-oldest-ice-on-earth.aspx An international consortium has set out to find the oldest ice on Earth, in Antarctica, using a revolutionary probe developed by French teams, with early participation by LSCE: Subglacior. The probe makes it possible to date ice in real time without coring. Environment ; Climate general public ; Researchers ; Journalists LSCE Scientific result Tue, 03 Jan 2017 11:00:00 GMT The oak genome has been sequenced https://www.cea.fr/drf/english/Pages/News/Scientific-results/2015/oak-genome-sequenced.aspx Research teams from INRA and the CEA have just sequenced for the first time the genome of the pedunculate oak tree, which is widely distributed throughout the northern hemisphere. This work will improve our understanding of the adaptive mechanisms of trees to environmental variations, and will thus provide elements that can be used to anticipate their responses to climate change. Genomics ; Impact of climate change Fontenay-aux-Roses Scientific result Mon, 11 May 2015 10:00:00 GMT