DOI: 10.1002/jgrd.50344
论文题名: Dimming and brightening trends in direct solar irradiance from 1909 to 2010 over Davos, Switzerland: Proportions of aerosol and gaseous transmission
作者: Lachat D. ; Wehrli C.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 8 起始页码: 3285
结束页码: 3291
语种: 英语
英文关键词: aerosol transmission
; atmospheric dimming and brightening
; transmission trends
Scopus关键词: Solar radiation
; Vapors
; Aerosol transmission
; Atmospheric transmissions
; Direct solar
; Residual factors
; Switzerland
; Total transmission
; Aerosols
; aerosol composition
; irradiance
; ozone
; Rayleigh number
; solar radiation
; spatiotemporal analysis
; water vapor
; Davos
; Graubunden
; Switzerland
英文摘要: Apparent atmospheric transmission has been calculated from the longest stationary pyrheliometer record worldwide located at the Physikalisch- Meteorologisches Observatorium Davos covering the years 1909 to 2010. Periods of early brightening up to 1929, dimming from 1930 to 1973, and brightening from 1974 onward were localized in this transmission record and found to be highly significant. Total transmission was partitioned into factors accounting for water vapor and aerosols. By modeling the apparent transmission of the gaseous components, aerosol transmission was obtained as a residual factor. Compared to the trend results found in total transmission, the dimming and brightening periods are more pronounced by a factor of 2; the early brightening period was found to be insignificant in aerosol transmission. The transmission records of water vapor, pure Rayleigh scattering, and ozone have shown only small trends over these periods, which are considered negligible. ©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63793
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Physikalisch-Meteorologisches Observatorium Davos, World Radiation Centre (PMOD/WRC), Dorfstrasse 33, 7260 Davos-Dorf, Switzerland; Institute of Geography, University of Bern, Hallerstrasse 12, 3012 Bern, Switzerland; Oeschger Centre for Climate Change Research, Zähringerstrasse 25, 3012 Bern, Switzerland
Recommended Citation:
Lachat D.,Wehrli C.. Dimming and brightening trends in direct solar irradiance from 1909 to 2010 over Davos, Switzerland: Proportions of aerosol and gaseous transmission[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(8)