Numerical Modeling of Stratospheric Dynamics and Interannual Variability

平流层动力学和年际变化的数值模拟

• 批准号: 9301105
• 负责人: Donal O'Sullivan
• 金额: $ 20.61万
• 依托单位: NorthWest Research Associates, Incorporated
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-08-15 至 1997-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9301105&HistoricalAwards=false
• 关键词: Numerical; Modeling; Stratospheric; Dynamics; Interannual

9301105 O'Sullivan Under this award the Principal Investigator will investigate various aspects of middle atmospheric dynamics using two global circulation models. The first topic involves the secondary circulations which result from the cross-equatorial flow that results from inertial instabilities in the stratospheric flows. Better definition of these circulations is essential to understand vertical diffusion of atmospheric constituents. The second investigation will be into inertia-gravity wave generation and subsequent effects on the polar vortex and transports in and out of the vortex. Results are important to understanding the chemistry that occurs within the vortex, including ozone depletion. The third task is to explore the relationship between the quasi- biennial oscillation and interannual variability of stratospheric ozone at high latitudes. Finally, Dr. O'Sullivan will attempt to model the tropospheric-stratospheric response to large-scale localized tropical heating, that is, deep convection such as that found over the western tropical Pacific. ***

小行星9301105 根据该奖项，首席研究员将使用两个全球环流模型研究中层大气动力学的各个方面。 第一个主题涉及平流层气流惯性不稳定引起的越赤道气流所产生的次级环流。 更好地定义这些环流对于理解大气成分的垂直扩散至关重要。 第二项调查将是惯性重力波的产生及其对极涡和极涡内外输送的影响。 这些结果对于了解涡旋内发生的化学反应，包括臭氧消耗，都很重要。 第三个任务是探索高纬度平流层臭氧准两年振荡与年际变化的关系。 最后，O 'Sullivan博士将尝试模拟对流层-平流层对大规模局部热带加热的反应，即热带太平洋西部的深对流。 ***