Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-3133-2017 |
Estimates of the aerosol indirect effect over the Baltic Sea region derived from 12 years of MODIS observations | |
Saponaro, Giulia1; Kolmonen, Pekka1; Sogacheva, Larisa1; Rodriguez, Edith1; Virtanen, Timo1; de Leeuw, Gerrit1,2 | |
2017-02-28 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:4 |
文章类型 | Article |
语种 | 英语 |
国家 | Finland |
英文摘要 | Retrieved from the Moderate Resolution Imaging Spectroradiometer (MODIS) on-board the Aqua satellite, 12 years (2003-2014) of aerosol and cloud properties were used to statistically quantify aerosol-cloud interaction (ACI) over the Baltic Sea region, including the relatively clean Fennoscandia and the more polluted central-eastern Europe. These areas allowed us to study the effects of different aerosol types and concentrations on macro-and microphysical properties of clouds: cloud effective radius (CER), cloud fraction (CF), cloud optical thickness (COT), cloud liquid water path (LWP) and cloud-top height (CTH). Aerosol properties used are aerosol optical depth (AOD), Angstrom exponent (AE) and aerosol index (AI). The study was limited to low-level water clouds in the summer. The vertical distributions of the relationships between cloud properties and aerosols show an effect of aerosols on low-level water clouds. CF, COT, LWP and CTH tend to increase with aerosol loading, indicating changes in the cloud structure, while the effective radius of cloud droplets decreases. The ACI is larger at relatively low cloud-top levels, between 900 and 700 hPa. Most of the studied cloud variables were unaffected by the lower-tropospheric stability (LTS), except for the cloud fraction. The spatial distribution of aerosol and cloud parameters and ACI, here defined as the change in CER as a function of aerosol concentration for a fixed LWP, shows positive and statistically significant ACI over the Baltic Sea and Fennoscandia, with the former having the largest values. Small negative ACI values are observed in central-eastern Europe, suggesting that large aerosol concentrations saturate the ACI. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000395147600008 |
WOS关键词 | SATELLITE-BASED ASSESSMENT ; CLOUD ; PRODUCTS ; RETRIEVAL ; LAND |
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/30574 |
专题 | 地球科学 |
作者单位 | 1.Finnish Meteorol Inst, Helsinki 00560, Finland; 2.Univ Helsinki, Dept Phys, Helsinki 00560, Finland |
推荐引用方式 GB/T 7714 | Saponaro, Giulia,Kolmonen, Pekka,Sogacheva, Larisa,et al. Estimates of the aerosol indirect effect over the Baltic Sea region derived from 12 years of MODIS observations[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(4). |
APA | Saponaro, Giulia,Kolmonen, Pekka,Sogacheva, Larisa,Rodriguez, Edith,Virtanen, Timo,&de Leeuw, Gerrit.(2017).Estimates of the aerosol indirect effect over the Baltic Sea region derived from 12 years of MODIS observations.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(4). |
MLA | Saponaro, Giulia,et al."Estimates of the aerosol indirect effect over the Baltic Sea region derived from 12 years of MODIS observations".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.4(2017). |
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