DOI: 10.1002/2017JD027527
Scopus记录号: 2-s2.0-85040727236
论文题名: Consistency Between Convection Allowing Model Output and Passive Microwave Satellite Observations
作者: Bytheway J.L. ; Kummerow C.D.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 2 起始页码: 1065
结束页码: 1078
语种: 英语
英文关键词: precipitation
; remote sensing
Scopus关键词: brightness temperature
; cloud microphysics
; convection
; hydrometeorology
; microwave imagery
; model validation
; numerical model
; precipitation assessment
; remote sensing
; satellite data
; simulation
; snow water equivalent
; water content
英文摘要: Observations from the Global Precipitation Measurement (GPM) core satellite were used along with precipitation forecasts from the High Resolution Rapid Refresh (HRRR) model to assess and interpret differences between observed and modeled storms. Using a feature-based approach, precipitating objects were identified in both the National Centers for Environmental Prediction Stage IV multisensor precipitation product and HRRR forecast at lead times of 1, 2, and 3 h at valid times corresponding to GPM overpasses. Precipitating objects were selected for further study if (a) the observed feature occurred entirely within the swath of the GPM Microwave Imager (GMI) and (b) the HRRR model predicted it at all three forecast lead times. Output from the HRRR model was used to simulate microwave brightness temperatures (Tbs), which were compared to those observed by the GMI. Simulated Tbs were found to have biases at both the warm and cold ends of the distribution, corresponding to the stratiform/anvil and convective areas of the storms, respectively. Several experiments altered both the simulation microphysics and hydrometeor classification in order to evaluate potential shortcomings in the model's representation of precipitating clouds. In general, inconsistencies between observed and simulated brightness temperatures were most improved when transferring snow water content to supercooled liquid hydrometeor classes. ©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/114676
Appears in Collections: 气候减缓与适应
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作者单位: Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States; Now at Cooperative Institute for Research in Environmental Science (CIRES), Boulder, CO, United States
Recommended Citation:
Bytheway J.L.,Kummerow C.D.. Consistency Between Convection Allowing Model Output and Passive Microwave Satellite Observations[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(2)