DOI: 10.1175/JCLI-D-13-00696.1
Scopus记录号: 2-s2.0-84907830941
论文题名: Variability of the daily-mean shortwave cloud radiative forcing at the surface at a midlatitude site in southwestern Europe
作者: Salgueiro V. ; Costa M.J. ; Silva A.M. ; Bortoli D.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 20 起始页码: 7769
结束页码: 7780
语种: 英语
Scopus关键词: Cloud radiative forcing
; Midlatitudes
; Southwestern europe
; cloud radiative forcing
; radiative transfer
; radiometer
; seasonal variation
; shortwave radiation
; Europe
英文摘要: The shortwave cloud radiative forcing is calculated from surface measurements taken in évora from 2003 to 2010 with a multifilter rotating shadowband radiometer (MFRSR) and with an Eppley black and white pyranometer. A new approach to estimate the clear-sky irradiance based on radiative transfer calculations is also proposed. The daily-mean values of the cloud radiative forcing (absolute and normalized) as well as their monthly and seasonal variabilities are analyzed. The study shows greater variability of radiative forcing during springtime with respect to the other seasons. The mean daily cloudy periods have seasonal variation proportional to the seasonal variation of the cloud radiative forcing, with maximum values also occurring during springtime. The minimum values found for the daily-mean cloud radiative forcing are 2139.5 and 2198.4Wm-2 for MFRSR and Eppley data, respectively; the normalized values present about 40% of sample amplitude, both for MFRSR and Eppley. In addition, a quantitative relationship between the MFRSRand Eppley cloud radiative forcings applicable to other locations is proposed. © 2014 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51290
Appears in Collections: 气候变化事实与影响
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作者单位: Departamento de Física, Centro de Geofísica de Évora, Instituto de Investigação e Formação Avançada, Universidade de évora, Évora, Portugal; Departamento de Física, Centro de Geofísica de Évora, Escola de Ciências e Tecnologia, Universidade de évora, Évora, Portugal
Recommended Citation:
Salgueiro V.,Costa M.J.,Silva A.M.,et al. Variability of the daily-mean shortwave cloud radiative forcing at the surface at a midlatitude site in southwestern Europe[J]. Journal of Climate,2014-01-01,27(20)