Impact of aerosols on the global dimming and brightening

气溶胶对全球变暗和变亮的影响

• 批准号: 22740316
• 负责人: KUDO Rei
• 金额: $ 2.25万
• 依托单位: Japan, Meteorological Research Institute
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22740316/
• 关键词: 気候変動; エアロゾル; 地上日射; 大気放射; 光学特性; 一次散乱アルベド; 光学的厚さ

Surface solar radiation in the world has a decreasing trend until the 1980s(global dimming) and an increasing trend up to now(global brightening). In order to evaluate the impact of aerosols on the dimming and brightening, we estimated two aerosol optical properties, which represent the aerosol amount and light absorption, from the long-term measurements of the surface broadband solar radiation in the world. Using the measurements from 1976 to 2008 at 14 sites in Japan, we found the increase of the amount of light absorptive aerosols in the 1980s. Both an increase of aerosol amount and an increase of light absorption mean a decrease of surface solar radiation. The dimming and brightening in Japan was attributed to these changes in aerosols. At 28 sites in the world, the aerosol amount increased from 1995 to 2010, but the light absorption weakened. Therefore, the impact of aerosols on the brightening at the analyzed 28 sites was small.

直到1980年代（全球变暗），世界上的地表太阳辐射趋势下降，直到现在（全球亮度）。为了评估气溶胶对昏暗和亮度的影响，我们估计了两种气溶胶光学特性，它们代表了世界上表面宽带太阳辐射的长期测量。使用1976年至2008年在日本14个地点的测量值，我们发现1980年代的光吸收气溶胶量增加。气溶胶量的增加和光吸收的增加意味着表面太阳辐射的减少。日本的昏暗和亮度归因于气溶胶的这些变化。在世界上28个地点，气溶胶量从1995年到2010年增加，但光吸收减弱。因此，气溶胶对分析的28个地点的亮度的影响很小。

项目成果

Influences of aerosol optical thickness and single scattering albedo on global dimming and brightening

气溶胶光学厚度和单次散射反照率对全局变暗和变亮的影响

• 发表时间: 2010
• 作者: Kudo;R.;A. Uchiyama;A. Yamazaki;and T. Sakami
• 通讯作者: and T. Sakami

Retrieval of aerosol optical properties based on the spheroid model

• DOI: 10.2151/jmsj.2010-505
• 发表时间: 2010-10
• 期刊: Journal of the Meteorological Society of Japan
• 影响因子: 3.1
• 作者: Eriko Kobayashi;A. Uchiyama;A. Yamazaki;R. Kudo

Studies on long-term variations in aerosol optical properties and direct effect by ground-based radiometers

通过地面辐射计研究气溶胶光学特性的长期变化和直接影响

• 发表时间: 2011
• 期刊: Doctor Thesis, Hokkaido University
• 作者: Kudo;R.
• 通讯作者: R.

Impacts of aerosol optical thickness and single scattering albedo on the dimming and brightening in Japan

气溶胶光学厚度和单次散射反照率对日本变暗和变亮的影响

• 发表时间: 2010
• 作者: Kudo;R.;A. Uchiyama;A. Yamazaki;T. Sakami
• 通讯作者: T. Sakami

Direct effect of aerosol optical properties on global dimming and brightening

气溶胶光学特性对全局变暗和变亮的直接影响

• 发表时间: 2011
• 作者: R. Kudo;and A. Uchiyama
• 通讯作者: and A. Uchiyama