Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-9145-2017 |
Cloud albedo changes in response to anthropogenic sulfate and non-sulfate aerosol forcings in CMIP5 models | |
Frey, Lena1; Bender, Frida A. -M.; Svensson, Gunilla | |
2017-07-31 | |
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:14 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden |
英文摘要 | The effects of different aerosol types on cloud albedo are analysed using the linear relation between total albedo and cloud fraction found on a monthly mean scale in regions of subtropical marine stratocumulus clouds and the influence of simulated aerosol variations on this relation. Model experiments from the Coupled Model Intercomparison Project phase 5 (CMIP5) are used to separately study the responses to increases in sulfate, non-sulfate and all anthropogenic aerosols. A cloud brightening on the month-to-month scale due to variability in the background aerosol is found to dominate even in the cases where anthropogenic aerosols are added. The aerosol composition is of importance for this cloud brightening, that is thereby region dependent. There is indication that absorbing aerosols to some extent counteract the cloud brightening but scene darkening with increasing aerosol burden is generally not supported, even in regions where absorbing aerosols dominate. Month-to-month cloud albedo variability also confirms the importance of liquid water content for cloud albedo. Regional, monthly mean cloud albedo is found to increase with the addition of anthropogenic aerosols and more so with sulfate than non-sulfate. Changes in cloud albedo between experiments are related to changes in cloud water content as well as droplet size distribution changes, so that models with large increases in liquid water path and/or cloud droplet number show large cloud albedo increases with increasing aerosol. However, no clear relation between model sensitivities to aerosol variations on the month-to-month scale and changes in cloud albedo due to changed aerosol burden is found. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000437939600001 |
WOS关键词 | EARTH SYSTEM MODEL ; CLIMATE RESPONSE ; RADIATIVE PROPERTIES ; REPRESENTATION ; PRECIPITATION ; CIRCULATION ; SENSITIVITY |
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/30761 |
专题 | 地球科学 |
作者单位 | 1.Stockholm Univ, Dept Meteorol, Stockholm, Sweden; 2.Stockholm Univ, Bolin Ctr Climate Res, Stockholm, Sweden |
推荐引用方式 GB/T 7714 | Frey, Lena,Bender, Frida A. -M.,Svensson, Gunilla. Cloud albedo changes in response to anthropogenic sulfate and non-sulfate aerosol forcings in CMIP5 models[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(14). |
APA | Frey, Lena,Bender, Frida A. -M.,&Svensson, Gunilla.(2017).Cloud albedo changes in response to anthropogenic sulfate and non-sulfate aerosol forcings in CMIP5 models.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(14). |
MLA | Frey, Lena,et al."Cloud albedo changes in response to anthropogenic sulfate and non-sulfate aerosol forcings in CMIP5 models".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.14(2017). |
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