Atmospheric Trace Gases and Global Climate

大气微量气体与全球气候

• 批准号: 9115199
• 负责人: Wei-Chyung Wang
• 金额: $ 26.42万
• 依托单位: SUNY at Albany
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-10-15 至 1994-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9115199&HistoricalAwards=false
• 关键词: Atmospheric; Trace; Gases; Global; Climate

The PI has been using the NCAR community climate model version one (CCM1) coupled with a mixed layer ocean to study the climatic effects of CO2 and other trace gases (OTGs) CH4, N2O, CFC13 and CF2C12. His experiments suggest that OTGs provide an important heating source to the earth-atmospheric climate system. Because the radiative-forcing behavior of CO2 is very different from the OTGs, the PI's model simulations show that different radiative forcing can lead to quite different climatic effects. This research program will continue the study with emphasis on the climatic feedback. Three tasks are proposed. First a detailed diagnosis of CCM1 simulations with focus on climate feedback. Second, use of the CCM2 to study the climatic effects of C02 and OTGs. CCM2 includes major improvements in physical and dynamical parameterization and is much more realistic for climate studies. Therefore, comparisons of the climatic effects due to atmospheric trace gases between CCM1 and CCM2 offer a unique opportunity to study their sensitivity to model formulations. The third task is to evaluate the feedback effect of cloud optical properties, which has been identified potentially to be a strong negative feedback mechanism during climate changes. This research is important because it seeks to increase understanding of how trace gases influence climate.

PI一直在使用NCAR社区气候模型 版本一（CCM 1）与混合层海洋相结合来研究 CO2和其他痕量气体（OTGs）CH 4，N2 O， CFC 13和CF2 C12。 他的实验表明，OTGs提供了一种 是地球-大气气候系统的重要热源。 因为CO2的辐射强迫行为 从OTGs，PI的模型模拟表明，不同的 辐射强迫可导致截然不同的气候效应。 本研究计划将继续研究，重点是 气候反馈。 提出了三项任务。 首先 以气候为重点的CCM 1模拟的详细诊断 反馈 第二，利用CCM 2研究气候效应 CO2和OTGs的。 CCM 2包括物理性能的重大改进 和动力学参数化， 气候研究。 因此，气候效应的比较 由于CCM 1和CCM 2之间的大气痕量气体提供了 独特的机会来研究他们对模型的敏感性 制剂。 第三个任务是评估反馈效果 云的光学特性， 可能是一个强大的负反馈机制， 气候变化。 这项研究很重要，因为它试图 增加对痕量气体如何影响气候的了解。