| DOI: | 10.1016/j.atmosres.2017.10.007
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| Scopus记录号: | 2-s2.0-85033491808
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| 论文题名: | Dynamic downscaling over western Himalayas: Impact of cloud microphysics schemes |
| 作者: | Tiwari S.; Kar S.C.; Bhatla R.
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| 刊名: | Atmospheric Research
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| ISSN: | 1698095
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| 出版年: | 2018
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| 卷: | 201 | | 起始页码: | 1
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| 结束页码: | 16
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| 语种: | 英语
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| 英文关键词: | Annual cycle
; Climate
; Microphysics
; Simulations
; Western Himalayas
; WRF
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| Scopus关键词: | Mixing
; Snow
; Annual cycle
; Climate
; Microphysics
; Simulations
; Western himalayas
; Weather forecasting
; annual cycle
; cloud microphysics
; computer simulation
; convection
; data set
; downscaling
; weather forecasting
; Himalayas
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| 英文摘要: | Due to lack of observation data in the region of inhomogeneous terrain of the Himalayas, detailed climate of Himalayas is still unknown. Global reanalysis data are too coarse to represent the hydroclimate over the region with sharp orography gradient in the western Himalayas. In the present study, dynamic downscaling of the European Centre for Medium-Range Weather Forecast (ECMWF) Reanalysis-Interim (ERA-I) dataset over the western Himalayas using high-resolution Weather Research and Forecast (WRF) model has been carried out. Sensitivity studies have also been carried out using convection and microphysics parameterization schemes. The WRF model simulations have been compared against ERA-I and available station observations. Analysis of the results suggests that the WRF model has simulated the hydroclimate of the region well. It is found that in the simulations that the impact of convection scheme is more during summer months than in winter. Examination of simulated results using various microphysics schemes reveal that the WRF single-moment class-6 (WSM6) scheme simulates more precipitation on the upwind region of the high mountain than that in the Morrison and Thompson schemes during the winter period. Vertical distribution of various hydrometeors shows that there are large differences in mixing ratios of ice, snow and graupel in the simulations with different microphysics schemes. The ice mixing ratio in Morrison scheme is more than WSM6 above 400 hPa. The Thompson scheme favors formation of more snow than WSM6 or Morrison schemes while the Morrison scheme has more graupel formation than other schemes. © 2017 Elsevier B.V. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/108999
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| 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: | National Centre for Medium Range Weather Forecasting, Noida, India; Department of Geophysics, Banaras Hindu University, Varanasi, India
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| Recommended Citation: | |
Tiwari S.,Kar S.C.,Bhatla R.. Dynamic downscaling over western Himalayas: Impact of cloud microphysics schemes[J]. Atmospheric Research,2018-01-01,201
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