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DOI10.1029/2021GL094427
Composition Dependence of Stratospheric Aerosol Shortwave Radiative Forcing in Northern Mid-latitudes
Yaowei Li; John Dykema; Terry Deshler; Frank Keutsch
2021-12-03
发表期刊Geophysical Research Letters
出版年2021
英文摘要

Both observations and recent model results reveal a significant organic component in stratospheric aerosols. However, intrinsic optical properties (i.e., complex refractive index) of this organic component and the mixing state of organic and ubiquitous sulfuric acid components are quite uncertain. We examine the effects of different complex refractive indices and particle mixing states on shortwave radiative forcing (RF) of stratospheric aerosols in northern mid-latitudes. In the absence of large volcanic sulfur emissions, our calculations show that organic components may have substantial impacts on stratospheric aerosol optical depth (AOD). Compared to pure sulfuric acid/water aerosol, organic-containing aerosols could cause ±100% change in shortwave RF (for low AOD conditions) depending on the refractive index and mixing state. The range found here of shortwave RF results, for different scenarios of organic complex refractive index and mixing state, call for better understandings of chemical and transport processes determining aerosol optical properties in the stratosphere.

领域气候变化
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/343087
专题气候变化
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Yaowei Li,John Dykema,Terry Deshler,et al. Composition Dependence of Stratospheric Aerosol Shortwave Radiative Forcing in Northern Mid-latitudes[J]. Geophysical Research Letters,2021.
APA Yaowei Li,John Dykema,Terry Deshler,&Frank Keutsch.(2021).Composition Dependence of Stratospheric Aerosol Shortwave Radiative Forcing in Northern Mid-latitudes.Geophysical Research Letters.
MLA Yaowei Li,et al."Composition Dependence of Stratospheric Aerosol Shortwave Radiative Forcing in Northern Mid-latitudes".Geophysical Research Letters (2021).
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