BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Laboratoire d'Aérologie - ECPv6.18.3.1//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Laboratoire d'Aérologie
X-ORIGINAL-URL:https://laero.omp.eu
X-WR-CALDESC:Évènements pour Laboratoire d'Aérologie
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:Europe/Paris
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20250330T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20251026T010000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20260329T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20261025T010000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20270328T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20271031T010000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261109T110000
DTEND;TZID=Europe/Paris:20261109T120000
DTSTAMP:20261103T103739Z
CREATED:20261102T182631Z
LAST-MODIFIED:20261103T103739Z
UID:11345-1794222000-1794225600@laero.omp.eu
SUMMARY:Séminaire : Ground-based remote sensing of clouds and related atmospheric conditions in central Amazonia - Friederike Lipken
DESCRIPTION:Lien visio : https://visio.numerique.gouv.fr/erv-zsyx-vhs \n\n\n\n\n\nPrésenté par Friederike Lipken du Laboratorio de Fisica Das Nuvens de Institute of Astronomy\, Geophysics and Atmospheric Sciences\, University of Sao Paulo\, Brazil \n\n\n\n\n\n\n\nPour en savoir plus :\n\n\n\n\nCloud Radar Dataset 2020-2023: Lipken\, F.\, Albrecht\, R.\, Lopes\, C.\, Machado\, L.\, Artaxo\, P. (2026). Cloud Radar Profiles at the ATTO Campina Site (2020-2023) [Dataset].  Max Planck Institute for Biogeochemistry\, Jena\, Germany. https://doi.org/10.17871/ATTO.678.14.2915\n\n\n\nCloud Radar Dataset 2024: Lipken\, F.\, Albrecht\, R.\, Lopes\, C.\, Machado\, L.\, Artaxo\, P. (2026). Cloud Radar Profiles at the ATTO Campina Site (2024) [Dataset]. Max Planck Institute for Bio-geochemistry\, Jena\, Germany. https://doi.org/10.17871/ATTO.639.31.2910\n\n\n\nATTO Campina measurement site : \n\nACTRIS Cloudnet webpage : https://cloudnet.fmi.fi/search/data?site=campina\n\n\n\nCecchini et al. (2025): The ATTO-Campina site: A new observatory for tropical convection and gas-aerosol-cloud-precipitation interactions in the Amazon.  Bull. Amer. Meteor. Soc.\, BAMS-D-24-0092.1\, https://doi.org/10.1175/BAMS-D-24-0092.1\, in press.\n\n\n\n\n\nATTO project: https://www.attoproject.org/de
URL:https://laero.omp.eu/event/seminaire-ground-based-remote-sensing-of-clouds-and-related-atmospheric-conditions-in-central-amazonia-friederike-lipken/
LOCATION:Salle Boussinesq\, LAERO Toulouse\, 14 avenue Edouard Belin\, Toulouse\, France
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261116T150000
DTEND;TZID=Europe/Paris:20261116T170000
DTSTAMP:20261016T074306Z
CREATED:20261009T083359Z
LAST-MODIFIED:20261016T074306Z
UID:11230-1794841200-1794848400@laero.omp.eu
SUMMARY:Séminaire : Earth's albedo decrease over continental regions with reduced aerosol emissions - N. Clément
DESCRIPTION:Earth’s top-of-atmosphere albedo has been declining for more than 3 decades\, with the decline steepening since the 2010s. Because outgoing longwave radiation is not increasing fast enough to compensate\, this leads to a growing Earth Energy Imbalance.  \n\n\n\nThree regions – Europe\, Eastern North America\, and East Asia – exhibit trends in top-of-atmosphere albedo 2 to 4 times larger than the global trend\, the three of them together accounting for 15% of this global trend. These are also regions exhibiting strong decreases in aerosol emissions since the 2000s\, due to air quality policies.  \n\n\n\n\n\nUsing both satellite retrievals from CERES and MODIS instruments and CMIP6 simulations from 8 climate models\, we investigate these regional trends in top-of-atmosphere albedo over the 2003–2025 period and disentangle their causes\, either from aerosol-related changes or climate feedbacks. We build a 2D framework in which changes in aerosol optical depth\, cloud cover\, liquid and ice water paths\, droplet number\, surface albedo\, and surface temperature are used to estimate changes in top-of-atmosphere albedo.  \n\n\n\n \n\n\n\n\n\n\n\n\n			\n				\n			\n		\n\n\n\n\n\nSatellite retrievals suggest that half of the combined trend over these three regions could be attributed to decreasing aerosol emissions\, corresponding to 7% of Earth’s albedo decrease. This proportion is higher in most CMIP6 models\, which overestimate aerosol contributions\, underestimate climate feedback contributions\, and simulate lower global albedo trends. Climate model sensitivities could therefore have been underestimated. \n\n\n\n\n\nIntervenant : Noé Clément (IPSL) \n\n\n\nPour en savoir plus\n\n\n\n\nClément N.\, N. Bellouin\, O. Boucher\, J. Quaas\, H. Jia\, I. Tegen\, 2026 : Aerosol and non-aerosol drivers of regional trends in top-of-atmosphere albedo over 2002–2020 https://iopscience.iop.org/article/10.1088/1748-9326/ae687e
URL:https://laero.omp.eu/event/seminaire-earths-albedo-decrease-over-continental-regions-with-reduced-aerosol-emissions/
LOCATION:Salle Boussinesq\, LAERO Toulouse\, 14 avenue Edouard Belin\, Toulouse\, France
CATEGORIES:seminaire
END:VEVENT
END:VCALENDAR