Temperature-Profile/Lapse-Rate Feedback: A Misunderstood Feedback of the Climate System

• 作者: Bin Li C. Bruce Entwistle Michael E. Schlesinger
• 来源期刊: 大气和气候科学(英文)
• 学科: 医学
• 关键词: CLIMATE FEEDBACK FEEDBACK Analysis Lapse-Rate FEEDBACK
• 年，卷（期）: 2012,（4）
• 页码范围: 474-478
• 页数: 5页
• 分类号: R73

摘要

This study shows that the heretofore assumed condition for no temperature-profile (TP)/lapse-rate feedback, for all altitudes z, or , in fact yields a negative feedback. The correct condition for no TP feedback is for all z, where Ts is the surface temperature. This condition translates into a uniform increase (decrease) in lapse rate with altitude for an increase (decrease) in Ts. The temperature changes caused by a change in solar irradiance and/or planetary albedo satisfy the condition for no TP feedback. The temperature changes caused by a change in greenhouse gas concentration do not satisfy the condition for no TP feedback and, instead, yield a positive feedback.