Lohmann Ulrike, Lesins Glen
Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia B3H 3J5, Canada.
Science. 2002 Nov 1;298(5595):1012-5. doi: 10.1126/science.1075405.
The anthropogenic indirect aerosol effects of modifying cloud albedo and cloud lifetime cannot be deduced from observations alone but require a modeling component. Here we validate a climate model, with and without indirect aerosol effects, by using satellite observations. The model agrees better with observations when both indirect aerosol effects are included. However, the simulated clouds are more susceptible to aerosols than the observed clouds from the POLDER satellite, thus overestimating the indirect aerosol effect. By taking the difference in susceptibilities into account, the global mean total anthropogenic aerosol effect is reduced from -1.4 to -0.85 watts per square meter.
改变云反照率和云寿命的人为间接气溶胶效应无法仅从观测中推导得出，而是需要一个建模组件。在此，我们通过使用卫星观测来验证一个包含和不包含间接气溶胶效应的气候模型。当同时包含两种间接气溶胶效应时，该模型与观测结果的吻合度更高。然而，模拟云比来自POLAR卫星的观测云对气溶胶更敏感，因此高估了间接气溶胶效应。考虑到敏感性的差异，全球平均总人为气溶胶效应从每平方米-1.4瓦降至-0.85瓦。
