DOI: 10.1002/2016GL071185
论文题名: Quantifying cloud base updraft speeds of marine stratocumulus from cloud top radiative cooling
作者: Zheng Y. ; Rosenfeld D. ; Li Z.
刊名: Geophysical Research Letters
ISSN: 0094-8450
EISSN: 1944-8181
出版年: 2016
卷: 43, 期: 21 起始页码: 11407
结束页码: 11413
语种: 英语
英文关键词: cloud base updrafts
; cloud top radiative cooling
; marine stratocumulus
Scopus关键词: Atmospheric radiation
; Budget control
; Clouds
; Cooling
; Remote sensing
; Atmospheric radiation measurements
; Cloud base
; Cloud condensation nuclei
; General circulation model
; Marine stratocumulus
; Marine stratocumulus clouds
; Precipitation properties
; Radiative cooling
; Precipitation (meteorology)
英文摘要: Marine stratocumulus clouds play a significant role in the Earth's radiation budget. The updrafts at cloud base (Wb) govern the supersaturation and therefore the activation of cloud condensation nuclei, which modifies the cloud and precipitation properties. A statistically significant relationship between Wb and cloud top radiative cooling rate (CTRC) is found from the measurements of the Department of Energy's Atmospheric Radiation Measurement Mobile Facility on board a ship sailing between Honolulu and Los Angeles. A similar relation was found on Graciosa Island but with greater scatter and weaker correlation presumably due to the island effect. Based on the relation, we are able to estimate the cloud base updrafts using a simple formula: Wb = −0.44 × CTRC + 22.30 ± 13, where the Wb and CTRC have units of cm/s and W/m2, respectively. This quantification can be utilized in satellite remote sensing and parameterizations of Wb in general circulation models. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84996802101&doi=10.1002%2f2016GL071185&partnerID=40&md5=2cdbe7597da4cdf28fe3c61dd0ff7cc8
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9413
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Atmospheric and Oceanic Science and Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
Recommended Citation:
Zheng Y.,Rosenfeld D.,Li Z.. Quantifying cloud base updraft speeds of marine stratocumulus from cloud top radiative cooling[J]. Geophysical Research Letters,2016-01-01,43(21).