Warm Temperature Extremes Across Greenland Connected to Clouds
International audience Greenland ice sheet melt is a large contributor to rising global sea level and melt is dependent on surface air temperature. Arctic temperatures are strongly coupled to clouds but spatial connections between clouds and temperature have yet to be established across Greenland. B...
Published in: | Geophysical Research Letters |
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Format: | Article in Journal/Newspaper |
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2020
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Online Access: | https://insu.hal.science/insu-03726987 https://insu.hal.science/insu-03726987v1/document https://insu.hal.science/insu-03726987v1/file/Geophysical%20Research%20Letters%20-%202020%20-%20Gallagher%20-%20Warm%20Temperature%20Extremes%20Across%20Greenland%20Connected%20to%20Clouds.pdf https://doi.org/10.1029/2019GL086059 |
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ftecoleponts:oai:HAL:insu-03726987v1 2024-10-20T14:06:37+00:00 Warm Temperature Extremes Across Greenland Connected to Clouds Gallagher, Michael R. Chepfer, Hélène Shupe, Matthew D. Guzman, Rodrigo Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL) 2020 https://insu.hal.science/insu-03726987 https://insu.hal.science/insu-03726987v1/document https://insu.hal.science/insu-03726987v1/file/Geophysical%20Research%20Letters%20-%202020%20-%20Gallagher%20-%20Warm%20Temperature%20Extremes%20Across%20Greenland%20Connected%20to%20Clouds.pdf https://doi.org/10.1029/2019GL086059 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2019GL086059 BIBCODE: 2020GeoRL.4786059G doi:10.1029/2019GL086059 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://insu.hal.science/insu-03726987 Geophysical Research Letters, 2020, 47, ⟨10.1029/2019GL086059⟩ Greenland ice sheet cloud impacts energy budget warming events Arctic climate [SDU]Sciences of the Universe [physics] [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology info:eu-repo/semantics/article Journal articles 2020 ftecoleponts https://doi.org/10.1029/2019GL086059 2024-09-24T23:49:23Z International audience Greenland ice sheet melt is a large contributor to rising global sea level and melt is dependent on surface air temperature. Arctic temperatures are strongly coupled to clouds but spatial connections between clouds and temperature have yet to be established across Greenland. By mapping spaceborne lidar measurements and surface observations, it is shown that radiatively opaque clouds generally coincide with anomalously warm near-surface temperatures at Greenland sites. These results indicate that both temperatures over 0 ° C as well as positive daily temperature anomalies relate to spatially extensive opaque cloud cover. While prior studies indicate that clouds enhance extreme melt events, this research shows that opaque cloud cover and surface warming are closely related across the Greenland ice sheet, particularly in the ablation region. These findings establish broadly the spatial relationships between opaque clouds and temperatures and demonstrate the importance of direct observations across Greenland. Article in Journal/Newspaper Arctic Greenland Ice Sheet École des Ponts ParisTech: HAL Arctic Greenland Geophysical Research Letters 47 9 |
institution |
Open Polar |
collection |
École des Ponts ParisTech: HAL |
op_collection_id |
ftecoleponts |
language |
English |
topic |
Greenland ice sheet cloud impacts energy budget warming events Arctic climate [SDU]Sciences of the Universe [physics] [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology |
spellingShingle |
Greenland ice sheet cloud impacts energy budget warming events Arctic climate [SDU]Sciences of the Universe [physics] [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology Gallagher, Michael R. Chepfer, Hélène Shupe, Matthew D. Guzman, Rodrigo Warm Temperature Extremes Across Greenland Connected to Clouds |
topic_facet |
Greenland ice sheet cloud impacts energy budget warming events Arctic climate [SDU]Sciences of the Universe [physics] [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology |
description |
International audience Greenland ice sheet melt is a large contributor to rising global sea level and melt is dependent on surface air temperature. Arctic temperatures are strongly coupled to clouds but spatial connections between clouds and temperature have yet to be established across Greenland. By mapping spaceborne lidar measurements and surface observations, it is shown that radiatively opaque clouds generally coincide with anomalously warm near-surface temperatures at Greenland sites. These results indicate that both temperatures over 0 ° C as well as positive daily temperature anomalies relate to spatially extensive opaque cloud cover. While prior studies indicate that clouds enhance extreme melt events, this research shows that opaque cloud cover and surface warming are closely related across the Greenland ice sheet, particularly in the ablation region. These findings establish broadly the spatial relationships between opaque clouds and temperatures and demonstrate the importance of direct observations across Greenland. |
author2 |
Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL) |
format |
Article in Journal/Newspaper |
author |
Gallagher, Michael R. Chepfer, Hélène Shupe, Matthew D. Guzman, Rodrigo |
author_facet |
Gallagher, Michael R. Chepfer, Hélène Shupe, Matthew D. Guzman, Rodrigo |
author_sort |
Gallagher, Michael R. |
title |
Warm Temperature Extremes Across Greenland Connected to Clouds |
title_short |
Warm Temperature Extremes Across Greenland Connected to Clouds |
title_full |
Warm Temperature Extremes Across Greenland Connected to Clouds |
title_fullStr |
Warm Temperature Extremes Across Greenland Connected to Clouds |
title_full_unstemmed |
Warm Temperature Extremes Across Greenland Connected to Clouds |
title_sort |
warm temperature extremes across greenland connected to clouds |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://insu.hal.science/insu-03726987 https://insu.hal.science/insu-03726987v1/document https://insu.hal.science/insu-03726987v1/file/Geophysical%20Research%20Letters%20-%202020%20-%20Gallagher%20-%20Warm%20Temperature%20Extremes%20Across%20Greenland%20Connected%20to%20Clouds.pdf https://doi.org/10.1029/2019GL086059 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland Ice Sheet |
genre_facet |
Arctic Greenland Ice Sheet |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://insu.hal.science/insu-03726987 Geophysical Research Letters, 2020, 47, ⟨10.1029/2019GL086059⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2019GL086059 BIBCODE: 2020GeoRL.4786059G doi:10.1029/2019GL086059 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2019GL086059 |
container_title |
Geophysical Research Letters |
container_volume |
47 |
container_issue |
9 |
_version_ |
1813445325769146368 |