Collaborative Research: Analyses, Measurements and Modeling in Support of the Asian Monsoon Chemical and Climate Impact Project (ACCLIP)

合作研究：支持亚洲季风化学和气候影响项目 (ACCLIP) 的分析、测量和建模

• 批准号: 1853932
• 负责人: Owen Toon
• 金额: $ 124.66万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-05-15 至 2025-04-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1853932&HistoricalAwards=false
• 关键词: Collaborative; Research; Analyses; Measurements; Modeling

This effort involves an aircraft study of the chemistry and dynamics of the Asian Summer Monsoon (ASM). This atmospheric circulation takes place in the upper troposphere and lower stratosphere and spans the Pacific Ocean east of Asia westward to the Middle East. The vertical transport of pollutants within the ASM can have a global impact on atmospheric chemistry and radiation. This project includes the training of graduate students and post-doctoral scientists.The four main objectives of the project are: (1) Investigate the transport pathway of the ASM uplifted air from inside of the anticyclone to the global upper troposphere-lower stratosphere (UTLS); (2) Sample the chemical content of air processed in the ASM to ascertain its role in UTLS ozone chemistry, and in re-distributing active species and short-lived climate forcers to examine the respective roles of Asian pollution and the monsoon strength in chemistry and climate, and to understand two-way coupling between chemistry and climate. Chemical tracers of different lifetimes can also help characterize the ASM uplifting time scales, which are difficult for the models to estimate; (3) Obtain information on aerosol size, mass and chemical composition necessary for determining the radiative impact of the ASM, for constraining models of aerosol formation and for contrasting the organic-rich ASM UTLS aerosol population with that of sulfate-rich volcanic plumes and the background aerosol population; and (4) Measure the water vapor distribution associated with the monsoon dynamical structure to evaluate transport across the tropopause, and determine the role of the ASM in water vapor transport into the stratosphere.This project is scheduled to take place during July-August 2020 and will establish and expand collaborations between several academic institutions, government partners, and international institutions.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

这项工作涉及亚洲夏季风（ASM）的化学和动力学的飞机研究。 这种大气环流发生在对流层上部和平流层下部，横跨亚洲以东的太平洋向西至中东。 ASM内污染物的垂直迁移可对大气化学和辐射产生全球性影响。 本项目包括研究生和博士后科研人员的培养，主要目标是：（1）研究反气旋内ASM上升气流向全球对流层上部-平流层下部的输送路径;（2）对在ASM中处理的空气的化学成分进行采样，以确定其在UTLS臭氧化学中的作用，和重新分配的活动物种和短期气候强迫者，以检查亚洲污染和季风强度在化学和气候中的各自作用，并了解化学和气候之间的双向耦合。 不同寿命的化学示踪剂也可以帮助描述ASM抬升的时间尺度，这是模型难以估计的;（3）获取确定小型和小型金矿辐射影响所需的关于气溶胶大小、质量和化学成分的信息，限制气溶胶形成的模型，并将富含有机物的ASM UTLS气溶胶种群与硫酸盐的气溶胶种群进行对比，丰富的火山羽流和背景气溶胶种群;和（4）测量与季风动力结构相关的水汽分布，以评估穿过对流层顶的输送，并确定ASM在水汽输送到平流层中的作用。该项目计划于2008年7月进行，该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Abundant Nitrate and Nitric Acid Aerosol in the Upper Troposphere and Lower Stratosphere

• DOI: 10.1029/2022gl100258
• 发表时间: 2022-09
• 期刊: Geophysical Research Letters
• 影响因子: 5.2
• 作者: P. Yu;Siying Lian;Yunqian Zhu;O. B. Toon;M. Höpfner;S. Borrmann

A Multimodel Investigation of Asian Summer Monsoon UTLS Transport Over the Western Pacific

• DOI: 10.1029/2022jd037511
• 发表时间: 2022-12
• 期刊: Journal of Geophysical Research: Atmospheres
• 作者: L. Pan;D. Kinnison;Q. Liang;M. Chin;M. Santee;J. Flemming;Warren P. Smith;S. Honomichl;J. Bresch;L. Lait;Yunqian Zhu;S. Tilmes;P. Colarco;J. Warner;Adrien Vuvan;C. Clerbaux;E. Atlas;P. Newman;T. Thornberry;W. Randel;O. B. Toon