DOI: 10.1029/2018JD028911
Scopus记录号: 2-s2.0-85052225381
论文题名: Comparison of Daytime Low-Level Cloud Properties Derived From GOES and ARM SGP Measurements
作者: McHardy T.M. ; Dong X. ; Xi B. ; Thieman M.M. ; Minnis P. ; Palikonda R.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 15 起始页码: 8221
结束页码: 8237
语种: 英语
英文关键词: ARM SGP
; GOES
; Microphysics
; Stratocumulus
Scopus关键词: Eragrostis tef
英文摘要: Large-scale satellite data are critical for both verifying and improving general circulation model parameterizations of clouds and radiation for climate prediction. For reliable application of satellite data sets in cloud processes and climate models, it is important to have a reasonable estimate of the errors in the derived cloud properties. The daytime single-layered low-level cloud properties retrieved by the Geostationary Operational Environmental Satellite system (GOES) are compared with ground-based observations and retrievals over the Department of Energy Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) Central Facility from June 1998 to December 2006. The GOES retrievals are made via the Visible-Infrared Solar-infrared Split-window Technique. They are spatially averaged within a 0.15° × 0.15° box centered on the ARM SGP site, and the ARM surface observations are temporally averaged ±15 min around the GOES scans to produce collocated pairs. Comparisons are made for monthly means, diurnal means, and one-to-one GOES and ARM collocated pairs. GOES Teff is highly correlated with ARM Ttop cloud temperature, having an R2 value of 0.75, though GOES exhibits a cold bias. GOES-retrieved τ and liquid water path have very good agreement with ARM retrievals with R2s of 0.45 and 0.47, while re (GOES), on average, is about 2 μm greater than ARM re. An examination of solar and viewing geometry has shown that GOES-retrieved mean re and τ values are impacted by solar zenith angle and especially scattering angle, which is not unexpected and needs to be accounted for by users. ©2018. 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/113260
Appears in Collections: 气候减缓与适应
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作者单位: Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ, United States; SSAI, Inc., Hampton, VA, United States; NASA Langley Research Center, Hampton, Hampton, VA, United States
Recommended Citation:
McHardy T.M.,Dong X.,Xi B.,et al. Comparison of Daytime Low-Level Cloud Properties Derived From GOES and ARM SGP Measurements[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(15)