Study of Satellite Cloud Photometry Data to Assess Susceptibility of Global Cloud Cover to Albedo Modification

研究卫星云光度测量数据以评估全球云层对反照率变化的敏感性

• 批准号: 8716637
• 负责人: Sean Twomey
• 金额: $ 12.03万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-07-01 至 1991-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8716637&HistoricalAwards=false
• 关键词: Study; Satellite; Cloud; Photometry; Data

The visible reflectance of water clouds depends upon its composition, particularly the size distribution and concentration of water droplets and the total liquid water content. In clouds of low droplet concentration, typically found over the oceans, the addition of a few more cloud condensation nuclei could significantly alter the cloud's reflectance to visible light. When averaged over the entire globe this effect could cancel the presumed warning arising from the increase of carbon dioxide in the atmosphere. However, even if this global effect is unrealized the physics of aerosol pollution, and cloud reflectance remains intrinsically interesting.

水云的可见光反射率取决于其组成，特别是水滴的大小分布和浓度以及液态水的总含量。在低液滴浓度的云中，通常在海洋上发现，增加几个云凝结核可以显著改变云对可见光的反射率。如果在全球范围内进行平均，这种效应可以抵消大气中二氧化碳增加所引起的假定警告。然而，即使这种全球效应没有实现，气溶胶污染和云反射的物理学本质上仍然是有趣的。