In situ tracer measurements and analysis with HAGAR-V during the HALO mission SOUTHTRAC in fall 2019

2019 年秋季 HALO 任务 SOUTHTRAC 期间使用 HAGAR-V 进行原位示踪剂测量和分析

• 批准号: 423277816
• 负责人: Professor C. Michael Volk, Ph.D.
• 金额: --
• 依托单位: Arbeitsgruppe Atmosphärenphysik
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/423277816?language=en
• 关键词: situ; tracer; measurements; analysis; HAGAR

In the frame of this project we propose i) in situ measurements of a suite of tracers with the novel HAGAR-V instrument during the HALO SOUTHTRAC mission in the fall of 2019, and ii) analysis of the obtained HAGAR-V tracer data toward the scientific goals of that mission. HAGAR-V combines a fast CO2 measurement by NDIR analyzer, a 2-channel GC/ECD-system measuring long-lived tracers (CH4, F12, F11, F113, CCl4, SF6 every 90 s) and a 2-channel GC/MS system targeting a suite of further tracer species every 90-180 s, including long-lived (HFC-125, HFC-134a, HFC-32) and short-lived species (C2H2, iso-&n-C5H12, CH2Cl2, CHCl3, CH3Cl, C2Cl4). HAGAR-V thus covers most major chlorine source gases as well as the most important chlorinated VSLS, and also provides biomass burning tracers (C2H2 und CHCl3), excellent northern hemishere tracers (CH2Cl2, CHCl3, C2Cl4) and the classical stratospheric age tracers (SF6 and CO2). Local lifetimes of these species at the midlatitude tropopause range from several days to many years. The analysis of the HAGAR-V tracer data will contribute to the scientific themes of SOUTHTRAC by addressing a number of the missions’ objectives related to southern hemispheric transport and mixing, and the impact excerted on the southern UTLS by the Antarctic vortex and by biomass burning.

在这个项目的框架内，我们建议i)在2019年秋季的HALO SOUTHTRAC任务期间，使用新型HAGAR-V仪器对一套示踪剂进行现场测量，ii)分析获得的HAGAR-V示踪剂数据，以实现该任务的科学目标。haga - v结合了NDIR分析仪的快速CO2测量，双通道GC/ ecd系统测量长寿命示踪剂（CH4, F12, F11, F113, CCl4， SF6每90秒）和双通道GC/MS系统，每90-180秒测量一系列其他示踪剂，包括长寿命（HFC-125, HFC-134a, HFC-32）和短寿命物种（C2H2, iso-&n-C5H12, CH2Cl2, CHCl3, CH3Cl, C2Cl4）。HAGAR-V因此涵盖了大多数主要的氯源气体以及最重要的氯化VSLS，并提供生物质燃烧示踪剂（C2H2和CHCl3），优秀的北半球示踪剂（CH2Cl2, CHCl3, C2Cl4）和经典的平流层年龄示踪剂（SF6和CO2）。这些物种在中纬度对流层顶的当地寿命从几天到多年不等。对HAGAR-V示踪剂数据的分析将有助于SOUTHTRAC的科学主题，因为它涉及与南半球运输和混合有关的若干任务目标，以及南极涡旋和生物质燃烧对南部UTLS的影响。