[特邀报告]Atmospheric aerosol size distribution impacts radiative effects over the Himalayas via modulating aerosol single-scattering albedo

Atmospheric aerosol size distribution impacts radiative effects over the Himalayas via modulating aerosol single-scattering albedo
编号:2399 稿件编号:2969 访问权限:私有 更新:2023-05-03 23:07:51 浏览:178次 特邀报告

报告开始:2023年05月07日 10:15 (Asia/Shanghai)

报告时间:15min

所在会议:[13B] 13B、大气物理与气象气候 » [13B-1] 13B-1 大气物理和大气探测

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摘要
The single-scattering albedo (SSA) of atmospheric aerosols is a key parameter that controls aerosol radiative effects. The variation of SSA is thought to be mainly regulated by aerosol absorption in the Himalayas and South Asia, but observations contradict this idea. In situ field campaigns conducted over two Himalayan sites revealed that SSA was strongly dependent on scattering but weakly correlated with absorption. Observational results combined with the Mie theory further illustrated that SSA was primarily modulated by size distribution rather than absorption. Aerosol Robotic Network (AERONET) data showed similar impacts of size distribution on SSA and that aerosol radiative forcing efficiencies were significantly dependent on SSA. Aerosol size distribution therefore considerably affects radiative forcing by modulating aerosol SSA over the Himalayas. This study highlighted the influence of aerosol size distribution on radiative forcing over the Himalayas, which has important implications for understanding aerosol radiative effects globally.
关键字
Atmospheric aerosols, single-scattering albedo, size distribution, radiative forcing, in situ observations.
报告人
田鹏飞
青年研究员 兰州大学

稿件作者
田鹏飞 兰州大学大气科学学院
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