DOI: 10.1007/s00382-016-3203-7
Scopus记录号: 2-s2.0-85044481577
论文题名: Potential of microwave observations for the evaluation of rainfall and convection in a regional climate model in the frame of HyMeX and MED-CORDEX
作者: Rysman J.-F. ; Berthou S. ; Claud C. ; Drobinski P. ; Chaboureau J.-P. ; Delanoë J.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 51, 期: 3 起始页码: 837
结束页码: 855
语种: 英语
英文关键词: Convection
; HyMeX
; MED-CORDEX
; Passive microwave observations
; Precipitation
; Radar observations
; Radiative transfer model
; Regional model
Scopus关键词: atmospheric convection
; climate modeling
; computer simulation
; decadal variation
; microwave radiation
; precipitation (climatology)
; precipitation intensity
; radar
; radiative transfer
; rainfall
; regional climate
; Mediterranean Region
英文摘要: This study evaluates the potential of spaceborne passive microwave observations for assessing decadal simulations of precipitation from a regional climate model through a model-to-satellite approach. A simulation from the Weather and Research Forecasting model is evaluated against 2002–2012 observations from the Advanced Microwave Sounding Unit and the Microwave Humidity Sounder over the Mediterranean region using the radiative transfer code Radiative Transfer for Tiros Operational Vertical Sounder. It is first shown that simulated and observed brightness temperatures are consistently correlated for both water vapour and window channels. Yet, although the average simulated and observed brightness temperatures are similar, the range of brightness temperatures is larger in the observations. The difference is presumably due to the too low content of frozen particles in the simulation. To assess this hypothesis, density and altitude of simulated frozen hydrometeors are compared with observations from an airborne cloud radar. Results show that simulated frozen hydrometeors are found at lower median altitude than observed frozen hydrometeors, with an average content at least 5 times inferior. Spatial distributions of observed and simulated precipitation match reasonably well. However, when using simulated brightness temperatures to diagnose rainfall, the simulation performs very poorly. These results highlight the need of providing more realistic frozen hydrometeors content, which will increase the interest of using passive microwave observations for the long-term evaluation of regional models. In particular, significant improvements are expected from the archiving of convective fluxes of precipitating hydrometeors in future regional model simulation programs. © 2016, Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109162
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Laboratoire de Métérology Dynamique, Institut Pierre Simon Laplace CNRS, École Polytechnique, Université Paris-Saclay, Palaiseau, 91120, France; Laboratoire d’Aérologie, Université de Toulouse, CNRS, UPS, Toulouse, France; Laboratoire Atmosphères Milieux Observations Spatiales, IPSL, UVSQ, CNRS, UPMC, Palaiseau, France
Recommended Citation:
Rysman J.-F.,Berthou S.,Claud C.,et al. Potential of microwave observations for the evaluation of rainfall and convection in a regional climate model in the frame of HyMeX and MED-CORDEX[J]. Climate Dynamics,2018-01-01,51(3)