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DOI | 10.1007/s00382-019-04925-8 |
Climate response of the south Asian monsoon system to West Asia, Tibetan Plateau and local dust emissions | |
Singh, Charu1; Ganguly, Dilip2; Sharma, Puneet2; Mishra, Shiwansha2 | |
2019-11-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 53页码:6245-6264 |
文章类型 | Article |
语种 | 英语 |
国家 | India |
英文摘要 | The equilibrium climate response of the south Asian monsoon (SAM) system to West Asia (WA), Tibetan Plateau (TP) and local dust emissions is investigated through a series of systematically designed idealized numerical experiments using CESM1-SOM, an atmospheric general circulation model coupled with a slab ocean model. Our results show that while an increased (decreased) dust emissions from the WA region produces a significant positive impact in the range of 0.20-0.40 mm/day (negative impact similar to 0.40-0.60 mm/day) on the summer monsoon precipitation over south Asia particularly over the Indian subcontinent, a perpetual perturbation ranging from complete suppression to nearly doubling of dust emissions from the TP region or locally within south Asia yield relatively weaker and largely insignificant responses in the seasonal mean monsoon climate over south Asia. Distinctly opposite responses of the SAM system are noted to the suppression and enhancement of dust emissions from the WA region. A perpetual enhancement (suppression) of dust emissions from the WA region results in atmospheric circulation changes and alters the atmospheric temperature distribution over the south Asian region by warming (cooling) the free troposphere in such a way that it strengthens (weakens) the crucial north-south meridional mid-to-upper tropospheric temperature gradient as well as the magnitude of the vertical shear of zonal winds during the beginning of the summer monsoon season which further results in atmospheric circulation by favoring (opposing) the prevailing low level south-westerly winds and upper level northerly winds, leading to a strengthening (weakening) of the climatological summertime local Hadley cell circulation and leading to an increase (a decrease) in seasonal mean precipitation across most parts of South Asia and most significantly during the month of June. |
英文关键词 | Equilibrium climate response South Asian monsoon Dust West Asia CESM1-SOM |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000493469900062 |
WOS关键词 | INDIAN-SUMMER MONSOON ; COMMUNITY ATMOSPHERE MODEL ; CLOUD MICROPHYSICS ; MINERAL AEROSOL ; MIDDLE-EAST ; RAINFALL ; PARAMETERIZATION ; CONVECTION ; IMPACT ; PRECIPITATION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/187950 |
专题 | 气候变化 |
作者单位 | 1.ISRO, Indian Inst Remote Sensing, Dehra Dun, India; 2.Indian Inst Technol Delhi, Ctr Atmospher Sci, New Delhi, India |
推荐引用方式 GB/T 7714 | Singh, Charu,Ganguly, Dilip,Sharma, Puneet,et al. Climate response of the south Asian monsoon system to West Asia, Tibetan Plateau and local dust emissions[J]. CLIMATE DYNAMICS,2019,53:6245-6264. |
APA | Singh, Charu,Ganguly, Dilip,Sharma, Puneet,&Mishra, Shiwansha.(2019).Climate response of the south Asian monsoon system to West Asia, Tibetan Plateau and local dust emissions.CLIMATE DYNAMICS,53,6245-6264. |
MLA | Singh, Charu,et al."Climate response of the south Asian monsoon system to West Asia, Tibetan Plateau and local dust emissions".CLIMATE DYNAMICS 53(2019):6245-6264. |
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