This study presents the results of high-resolution (30 km) climate simulations over North India using an optimized configuration of the Regional Climate Model (RegCM), driven by a global spectral model (T80 model with horizontal resolution of similar to 1.4.) for a period of 28 years (1982-2009). The main aim of this work is to analyze the capabilities of the RegCM to simulate the wintertime precipitation over North India in the recent past. The RegCM validation revealed a good improvement in reproducing the precipitation compared to results obtained from the T80 model. This improvement comes due to better representation of vertical pressure velocity, moisture transport, convective heating rate and temperature gradient at two different latitudinal zones. Moreover, orography in the high-resolution RegCM improves the precipitation simulation in the region where sharp orography gradient plays an important role in wintertime precipitation processes. Two bias correction (BC) methods namely mean bias-remove (MBR) and quantile mapping (QM) have been applied on the T80 driven RegCM model simulations. It was found that the QM method is more skillful than the MBR in simulating the wintertime precipitation over North India. A comparison of model-simulated and bias corrected precipitation with observed precipitation at 17 station locations has also been carried out. Overall, the results suggest that when the BC is applied on dynamically downscaled model, it has better skill in simulating the precipitation over North India and this model is a useful tool for further regional downscaling studies.
机构:
Calif Environm Protect Agcy, Modeling & Meteorol Branch, Air Qual Planning & Sci Div, Air Resources Board, Sacramento, CA 95814 USACalif Environm Protect Agcy, Modeling & Meteorol Branch, Air Qual Planning & Sci Div, Air Resources Board, Sacramento, CA 95814 USA
Zhao, Zhan
Di, Pingkuan
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Calif Environm Protect Agcy, Modeling & Meteorol Branch, Air Qual Planning & Sci Div, Air Resources Board, Sacramento, CA 95814 USACalif Environm Protect Agcy, Modeling & Meteorol Branch, Air Qual Planning & Sci Div, Air Resources Board, Sacramento, CA 95814 USA
Di, Pingkuan
Chen, Shu-Hua
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Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USACalif Environm Protect Agcy, Modeling & Meteorol Branch, Air Qual Planning & Sci Div, Air Resources Board, Sacramento, CA 95814 USA
Chen, Shu-Hua
Avise, Jeremy
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Calif Environm Protect Agcy, Modeling & Meteorol Branch, Air Qual Planning & Sci Div, Air Resources Board, Sacramento, CA 95814 USA
Washington State Univ, Dept Civil & Environm Engn, Pullman, WA 99164 USACalif Environm Protect Agcy, Modeling & Meteorol Branch, Air Qual Planning & Sci Div, Air Resources Board, Sacramento, CA 95814 USA
Avise, Jeremy
Kaduwela, Ajith
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Calif Environm Protect Agcy, Modeling & Meteorol Branch, Air Qual Planning & Sci Div, Air Resources Board, Sacramento, CA 95814 USA
Univ Calif Davis, Air Qual Res Ctr, Davis, CA 95616 USACalif Environm Protect Agcy, Modeling & Meteorol Branch, Air Qual Planning & Sci Div, Air Resources Board, Sacramento, CA 95814 USA
机构:
Hohai Univ, Natl Key Lab Water Disaster Prevent, Nanjing, Peoples R China
Hohai Univ, Coll Hydrol & Water Resources, Nanjing, Peoples R ChinaHohai Univ, Natl Key Lab Water Disaster Prevent, Nanjing, Peoples R China
Huang, Bohan
Liu, Zhu
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Hohai Univ, Natl Key Lab Water Disaster Prevent, Nanjing, Peoples R China
Hohai Univ, Coll Hydrol & Water Resources, Nanjing, Peoples R China
Hohai Univ, Hydrometeorol Key Lab, China Meteorol Adm, Nanjing, Peoples R ChinaHohai Univ, Natl Key Lab Water Disaster Prevent, Nanjing, Peoples R China
Liu, Zhu
Liu, Su
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Hohai Univ, Natl Key Lab Water Disaster Prevent, Nanjing, Peoples R China
Hohai Univ, Coll Hydrol & Water Resources, Nanjing, Peoples R ChinaHohai Univ, Natl Key Lab Water Disaster Prevent, Nanjing, Peoples R China
Liu, Su
Duan, Qingyun
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机构:
Hohai Univ, Natl Key Lab Water Disaster Prevent, Nanjing, Peoples R China
Hohai Univ, Coll Hydrol & Water Resources, Nanjing, Peoples R China
Hohai Univ, Hydrometeorol Key Lab, China Meteorol Adm, Nanjing, Peoples R ChinaHohai Univ, Natl Key Lab Water Disaster Prevent, Nanjing, Peoples R China
机构:
IIT Delhi, Ctr Atmospher Sci, New Delhi, IndiaIIT Delhi, Ctr Atmospher Sci, New Delhi, India
Tiwari, P. R.
Kar, S. C.
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Natl Ctr Medium Range Weather Forecasting, A-50,Sect 62, Noida, IndiaIIT Delhi, Ctr Atmospher Sci, New Delhi, India
Kar, S. C.
Mohanty, U. C.
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IIT Bhubaneswar, Sch Earth Ocean & Climate Sci, Bhubaneswar, Orissa, IndiaIIT Delhi, Ctr Atmospher Sci, New Delhi, India
Mohanty, U. C.
Dey, S.
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IIT Delhi, Ctr Atmospher Sci, New Delhi, IndiaIIT Delhi, Ctr Atmospher Sci, New Delhi, India
Dey, S.
Kumari, S.
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IIT Delhi, Ctr Atmospher Sci, New Delhi, IndiaIIT Delhi, Ctr Atmospher Sci, New Delhi, India
Kumari, S.
Sinha, P.
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机构:
IIT Delhi, Ctr Atmospher Sci, New Delhi, India
Penn State Univ, Dept Meteorol, University Pk, PA 16802 USAIIT Delhi, Ctr Atmospher Sci, New Delhi, India
Sinha, P.
Raju, P. V. S.
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King Abdulaziz Univ, Ctr Excellence Climate Change Res, Jeddah 21413, Saudi ArabiaIIT Delhi, Ctr Atmospher Sci, New Delhi, India
Raju, P. V. S.
Shekhar, M. S.
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机构:
Snow & Avalanche Study Estab, Ctr Res & Dev, Chandigarh, IndiaIIT Delhi, Ctr Atmospher Sci, New Delhi, India
机构:
China Three Gorges Corp, Beijing 100038, Peoples R China
Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R ChinaChina Three Gorges Corp, Beijing 100038, Peoples R China
Wu, Heng
Lei, Huimin
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机构:
Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R ChinaChina Three Gorges Corp, Beijing 100038, Peoples R China
Lei, Huimin
Lu, Weiwei
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机构:
China Three Gorges Corp, Beijing 100038, Peoples R ChinaChina Three Gorges Corp, Beijing 100038, Peoples R China
Lu, Weiwei
Liu, Zhiwu
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机构:
China Three Gorges Corp, Beijing 100038, Peoples R ChinaChina Three Gorges Corp, Beijing 100038, Peoples R China
Liu, Zhiwu
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