气候变化领域集成服务门户(CCPortal): Simulation of Indian Summer Monsoon Rainfall (ISMR) with fully coupled regional chemistry transport model: A case study for 2017

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DOI	10.1016/j.atmosenv.2021.118785
	Simulation of Indian Summer Monsoon Rainfall (ISMR) with fully coupled regional chemistry transport model: A case study for 2017
	Debnath S.; Jena C.; Ghude S.D.; Kumar R.; Govardhan G.; Gunwani P.; Saha S.K.; Hazra A.; Pokhrel S.
发表日期	2022
ISSN	1352-2310
卷号	268
英文摘要	The Indian subcontinent is a major hotspot of enhanced aerosol loading and emission of various chemical compounds due to extensive anthropogenic activities that profoundly impact the hydrological cycle of this region. Using coupled regional atmospheric chemistry transport model, WRF-Chem (Weather Research and Forecasting model coupled with chemistry) with fully interactive chemistry and dynamics, we carried out two sets of 122-days simulation experiments: (1) a control experiment without embedding chemistry and (2) a sensitivity experiment with embedding fully coupled MOZART-MOSAIC chemistry, to examine the impact of chemistry on the Indian Summer Monsoon Rainfall (ISMR) of 2017. The results show that inclusion of chemistry in the model plays a role in altering the spatial distribution of ISMR, reflected by a reduced mean rainfall by about 3 mm/day over the Indian subcontinent. The mean bias of model simulated rainfall reduces from 2.73 mm/day (excluding chemistry) to 1.6 mm/day (including chemistry), and from 1.2 mm/day (excluding chemistry) to 0.81 mm/day (including chemistry) when compared with IMD (India Meteorological Department) and TRMM (Tropical Rainfall Measuring Mission) rainfall data, respectively. Additionally, we found that inclusion of interactive chemistry causes a decrease in the daily convective rainfall by about 3 mm that is contributing largely to the mean rainfall differences. Further, analysis of hydrometeors indicates that the chemistry interacts with the cloud microphysics by modulating the hydrometeor paths of different cloud hydrometeors that consequently impacts the simulation of ISMR over this region. Results indicate that the virtue of detailed and more realistic representation of chemistry in the model has led to more realistic simulation and cannot be ignored in numerical forecasting of ISMR. © 2021 Elsevier Ltd
关键词	Aerosol chemistry Aerosols Monsoon WRF-Chem
语种	英语
scopus关键词	Aerosols; Atmospheric boundary layer; Atmospheric chemistry; Chemical analysis; Climate models; Embeddings; Rain; Rain gages; Weather forecasting; Aerosol chemistry; Aerosol loading; Case-studies; Chemistry transport modeling; Embeddings; Fully-coupled; Hotspots; Indian subcontinents; Indian summer monsoon rainfall; WRF/Chem; Atmospheric thermodynamics; rain; aerosol; atmospheric chemistry; cloud microphysics; human activity; hydrological cycle; monsoon; numerical model; rainfall; summer; aerosol; Article; atmospheric pressure; chemistry; controlled study; hydrological model; India; meteorology; moisture; precipitation; rainy season; relative humidity; sea level; seasonal variation; sensitivity analysis; simulation; summer; temperature; thermodynamics; topography; troposphere; wind speed; India
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248152
作者单位	Indian Institute of Tropical Meteorology, Ministry of Earth Sciences, Pune, India; Dept. of Atmospheric and Space Sciences, Savitribai Phule Pune University, Pune, India; India Meteorological Department, Ministry of Earth Sciences, New Delhi, India; National Center for Atmospheric Research, Boulder, CO 80301, United States; National Center for Medium Range Weather Forecasting, Ministry of Earth Sciences, Noida, UP, India
推荐引用方式 GB/T 7714	Debnath S.,Jena C.,Ghude S.D.,et al. Simulation of Indian Summer Monsoon Rainfall (ISMR) with fully coupled regional chemistry transport model: A case study for 2017[J],2022,268.
APA	Debnath S..,Jena C..,Ghude S.D..,Kumar R..,Govardhan G..,...&Pokhrel S..(2022).Simulation of Indian Summer Monsoon Rainfall (ISMR) with fully coupled regional chemistry transport model: A case study for 2017.ATMOSPHERIC ENVIRONMENT,268.
MLA	Debnath S.,et al."Simulation of Indian Summer Monsoon Rainfall (ISMR) with fully coupled regional chemistry transport model: A case study for 2017".ATMOSPHERIC ENVIRONMENT 268(2022).