Space‐based analysis of the cloud thermodynamic ...
Type de document :
Article dans une revue scientifique: Article original
DOI :
URL permanente :
Titre :
Space‐based analysis of the cloud thermodynamic phase transition for varying microphysical and meteorological regimes
Auteur(s) :
Coopman, Q. [Auteur]
Riedi, Jerome [Auteur]
Laboratoire d’Optique Atmosphérique - UMR 8518 [LOA]
interaction Clouds Aerosols Radiations - ICARE/AERIS Data and Services Center - UMS 2877 [ICARE]
Zeng, S. [Auteur]
Garrett, T.J. [Auteur]
Riedi, Jerome [Auteur]
Laboratoire d’Optique Atmosphérique - UMR 8518 [LOA]
interaction Clouds Aerosols Radiations - ICARE/AERIS Data and Services Center - UMS 2877 [ICARE]
Zeng, S. [Auteur]
Garrett, T.J. [Auteur]
Titre de la revue :
Geophysical Research Letters
Nom court de la revue :
Geophys. Res. Lett.
Éditeur :
American Geophysical Union (AGU)
Date de publication :
2020-02-29
Discipline(s) HAL :
Physique [physics]/Physique [physics]/Physique Atmosphérique et Océanique [physics.ao-ph]
Résumé en anglais : [en]
Phase transitions leading to cloud glaciation occur at temperatures that vary between ‐ 38 and 0°C depending on aerosol types and concentrations, the meteorology, and cloud microphysical and macrophysical parameters, ...
Lire la suite >Phase transitions leading to cloud glaciation occur at temperatures that vary between ‐ 38 and 0°C depending on aerosol types and concentrations, the meteorology, and cloud microphysical and macrophysical parameters, although the relationships remain poorly understood. Here, we statistically retrieve a cloud glaciation temperature from two passive space‐based instruments that are part of the NASA/CNES A‐Train, the POLarization and Directionality of the Earth's Reflectances (POLDER) and the MODerate‐resolution Imaging Spectroradiometer (MODIS). We compare the glaciation temperature for varying bins of cloud droplet effective radius, latitude, and large‐scale vertical pressure velocity and specific humidity at 700 ,hPa. Cloud droplet size has the strongest influence on glaciation temperature: For cloud droplets larger than 21 μm, the glaciation temperature is 6°C higher than for cloud droplets smaller than 9 μm. Stronger updrafts are also associated with lower glaciation temperatures.Lire moins >
Lire la suite >Phase transitions leading to cloud glaciation occur at temperatures that vary between ‐ 38 and 0°C depending on aerosol types and concentrations, the meteorology, and cloud microphysical and macrophysical parameters, although the relationships remain poorly understood. Here, we statistically retrieve a cloud glaciation temperature from two passive space‐based instruments that are part of the NASA/CNES A‐Train, the POLarization and Directionality of the Earth's Reflectances (POLDER) and the MODerate‐resolution Imaging Spectroradiometer (MODIS). We compare the glaciation temperature for varying bins of cloud droplet effective radius, latitude, and large‐scale vertical pressure velocity and specific humidity at 700 ,hPa. Cloud droplet size has the strongest influence on glaciation temperature: For cloud droplets larger than 21 μm, the glaciation temperature is 6°C higher than for cloud droplets smaller than 9 μm. Stronger updrafts are also associated with lower glaciation temperatures.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Non spécifiée
Vulgarisation :
Non
Établissement(s) :
Université de Lille
CNRS
CNRS
Collections :
Équipe(s) de recherche :
Interactions Rayonnement Nuages (IRN)
Date de dépôt :
2020-03-03T22:57:05Z
2021-02-04T11:11:03Z
2022-08-26T11:26:55Z
2024-04-16T14:28:33Z
2021-02-04T11:11:03Z
2022-08-26T11:26:55Z
2024-04-16T14:28:33Z
Fichiers
- Coopman_et_al-2020-Geophysical_Research_Letters.pdf
- Version finale acceptée pour publication (postprint)
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