Strong Ocean/Sea‐Ice Contrasts Observed ...
Type de document :
Article dans une revue scientifique: Article original
DOI :
URL permanente :
Titre :
Strong Ocean/Sea‐Ice Contrasts Observed in Satellite‐Derived Ice Crystal Number Concentrations in Arctic Ice Boundary‐Layer Clouds
Auteur(s) :
Papakonstantinou‐Presvelou, Iris [Auteur]
Sourdeval, Odran [Auteur]
Laboratoire d'Optique Atmosphérique (LOA) - UMR 8518
Quaas, Johannes [Auteur]
Sourdeval, Odran [Auteur]
Laboratoire d'Optique Atmosphérique (LOA) - UMR 8518
Quaas, Johannes [Auteur]
Titre de la revue :
Geophysical Research Letters
Nom court de la revue :
Geophysical Research Letters
Numéro :
49
Pagination :
e2022GL098207
Éditeur :
American Geophysical Union (AGU)
Date de publication :
2022-07-01
ISSN :
0094-8276
Mot(s)-clé(s) en anglais :
aerosol-cloud interactions
DARDAR-Nice
low-level clouds
ice microphysics
Arctic Amplification
DARDAR-Nice
low-level clouds
ice microphysics
Arctic Amplification
Discipline(s) HAL :
Planète et Univers [physics]/Océan, Atmosphère
Planète et Univers [physics]
Planète et Univers [physics]
Résumé en anglais : [en]
The Arctic climate changes at a faster rate than the rest of the globe. Boundary-layer clouds may play an important role in this change. At temperatures below 0°C, mixed-phase clouds exist and their phase and longevity is ...
Lire la suite >The Arctic climate changes at a faster rate than the rest of the globe. Boundary-layer clouds may play an important role in this change. At temperatures below 0°C, mixed-phase clouds exist and their phase and longevity is influenced by the abundance of ice crystals, which in turn is a function of aerosols serving as ice nucleating particles (INPs). Previous in situ studies suggested a local source of INPs due to biological activity over open ocean. Here we investigate ice crystal concentrations in clouds below 2 km at a large scale, by exploiting a newly developed data set—DARDAR-Nice—retrieved from active satellite remote sensing. The data set spans from 2006 to 2016. Contrary to previous expectation, we find that at a given latitude and temperature, there are more ice crystals over sea ice than over open ocean. This enhancement is particularly found in clouds south of 70°N, and also at temperatures between 0°C and −10°C.Lire moins >
Lire la suite >The Arctic climate changes at a faster rate than the rest of the globe. Boundary-layer clouds may play an important role in this change. At temperatures below 0°C, mixed-phase clouds exist and their phase and longevity is influenced by the abundance of ice crystals, which in turn is a function of aerosols serving as ice nucleating particles (INPs). Previous in situ studies suggested a local source of INPs due to biological activity over open ocean. Here we investigate ice crystal concentrations in clouds below 2 km at a large scale, by exploiting a newly developed data set—DARDAR-Nice—retrieved from active satellite remote sensing. The data set spans from 2006 to 2016. Contrary to previous expectation, we find that at a given latitude and temperature, there are more ice crystals over sea ice than over open ocean. This enhancement is particularly found in clouds south of 70°N, and also at temperatures between 0°C and −10°C.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Internationale
Vulgarisation :
Non
Établissement(s) :
Université de Lille
CNRS
CNRS
Collections :
Équipe(s) de recherche :
Interactions Rayonnement Nuages (IRN)
Date de dépôt :
2023-01-06T12:04:06Z
2023-01-17T14:31:27Z
2023-01-17T14:31:27Z
Fichiers
- Papakonstantinou-Presvelou-2022aa.pdf
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