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DOI | 10.1016/j.atmosres.2019.104677 |
Consistent signal of aerosol indirect and semi-direct effect on water clouds in the oceanic regions adjacent to the Indian subcontinent | |
Rao, Sofiya; Dey, Sagnik | |
2020-02-01 | |
发表期刊 | ATMOSPHERIC RESEARCH
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ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2020 |
卷号 | 232 |
文章类型 | Article |
语种 | 英语 |
国家 | India |
英文摘要 | Quantifying aerosol-cloud interaction is one of the most challenging tasks in climate science. Previous studies in the oceanic regions adjacent to the Indian subcontinent providing evidence of aerosol impacts on cloud properties were mostly confined in the winter season. Here we analyze 15 years (March 2000-February 2015) of MODIS aerosol and cloud products and 10 years (October 2004-February 2015) of OMI absorbing aerosol index (AI) over the Arabian Sea (AS), Bay of Bengal (BoB) and South Indian Ocean (SIO) to examine the sensitivity of marine water cloud characteristics to changing aerosol loading. Amidst a monotonous increase in R-eff (cloud effective radius) with an increase in LWP (liquid water path) in clean and polluted conditions (an indicator of the meteorological influence), a smaller R-eff at higher AOD (aerosol optical depth) bins demonstrates that aerosol signal is detectable and consistent in LWP range of 150-350 gm(-2). Furthermore, a faster rate of R-eff growth with increasing LWP in clean condition and the pattern of change in cloud fraction (f(c)) with an increase in AOD that cannot be explained by meteorology alone also provide evidence of the consistency of aerosol indirect effect. Evidence of aerosol semi-direct (decrease of LWP with an increase in AI) is also conspicuous in the AS and BoB. Our results suggest improved representations of aerosol and cloud processes in the models are required to reduce uncertainty in regional climate forcing. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000513179100001 |
WOS关键词 | ABSORBING AEROSOLS ; PRODUCTS ; PRECIPITATION ; MICROPHYSICS ; IMPACT ; FIRES |
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/278783 |
专题 | 地球科学 |
作者单位 | Indian Inst Technol Delhi, Ctr Atmospher Sci, New Delhi 110016, India |
推荐引用方式 GB/T 7714 | Rao, Sofiya,Dey, Sagnik. Consistent signal of aerosol indirect and semi-direct effect on water clouds in the oceanic regions adjacent to the Indian subcontinent[J]. ATMOSPHERIC RESEARCH,2020,232. |
APA | Rao, Sofiya,&Dey, Sagnik.(2020).Consistent signal of aerosol indirect and semi-direct effect on water clouds in the oceanic regions adjacent to the Indian subcontinent.ATMOSPHERIC RESEARCH,232. |
MLA | Rao, Sofiya,et al."Consistent signal of aerosol indirect and semi-direct effect on water clouds in the oceanic regions adjacent to the Indian subcontinent".ATMOSPHERIC RESEARCH 232(2020). |
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