Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-20-3135-2020 |
Cloud condensation nuclei properties of South Asian outflow over the northern Indian Ocean during winter | |
Nair, Vijayakumar S.; Jayachandran, Venugopalan Nair; Kompalli, Sobhan Kumar; Gogoi, Mukunda M.; Babu, S. Suresh | |
2020-03-16 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2020 |
卷号 | 20期号:5页码:3135-3149 |
文章类型 | Article |
语种 | 英语 |
国家 | India |
英文摘要 | Extensive measurements of cloud condensation nuclei (CCN) and condensation nuclei (CN) concentrations in the South Asian outflow to the northern Indian Ocean were carried out on board an instrumented research vessel, as part of the Integrated Campaign for Aerosols, gases and Radiation Budget (ICARB) during the winter season (January February 2018). Measurements include a north-south transect across the South Asian plume over the northern Indian Ocean and an east-west transect over the equatorial Indian Ocean (similar to 2 degrees S), which is far away from the continental sources. South Asian outflow over the northern Indian Ocean is characterized by the high values of CCN number concentration (similar to 5000 cm(-3)), low CCN activation efficiency (similar to 25 %) and a steep increase in CCN concentration with the increase in supersaturation. In contrast, low CCN concentration (similar to 1000 cm(-3)) with flat supersaturation spectra was found over the equatorial Indian Ocean. The CCN properties exhibited significant dependence on the geometric mean diameter (GMD) of the aerosol number size distribution, and CCN activation efficiency decreased to low values (< 20 %) at the time of new -particle formation events over near-coastal and remote oceanic regions. The analysis of the activation efficiencies for the "similar" aerosol size distributions over the northern Indian Ocean indicated the primary role of aerosol number size distribution on CCN activation efficiency. The dependence of CCN properties and activation efficiency on size-segregated aerosol number concentration, especially during the ultrafine (< 100 nm) particle events, is investigated in detail for the first time over the region. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000521134700002 |
WOS关键词 | SIZE-RESOLVED MEASUREMENTS ; BIOMASS BURNING SMOKE ; MEGA-CITY GUANGZHOU ; NUMBER CONCENTRATION ; CCN ACTIVATION ; LONG-TERM ; CHEMICAL-COMPOSITION ; ATMOSPHERIC AEROSOL ; PARTICLE FORMATION ; OPTICAL-PROPERTIES |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/278687 |
专题 | 地球科学 |
作者单位 | Vikram Sarabhai Space Ctr, Space Phys Lab, Thiruvananthapuram, Kerala, India |
推荐引用方式 GB/T 7714 | Nair, Vijayakumar S.,Jayachandran, Venugopalan Nair,Kompalli, Sobhan Kumar,et al. Cloud condensation nuclei properties of South Asian outflow over the northern Indian Ocean during winter[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20(5):3135-3149. |
APA | Nair, Vijayakumar S.,Jayachandran, Venugopalan Nair,Kompalli, Sobhan Kumar,Gogoi, Mukunda M.,&Babu, S. Suresh.(2020).Cloud condensation nuclei properties of South Asian outflow over the northern Indian Ocean during winter.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(5),3135-3149. |
MLA | Nair, Vijayakumar S.,et al."Cloud condensation nuclei properties of South Asian outflow over the northern Indian Ocean during winter".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.5(2020):3135-3149. |
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