HALO TACTS and SALSA: Mission co-ordination for TACTS: (Transport And Composition in the UT/LMS) and SALSA (Seasonality of Air mass transport and origin in the Lowermost Stratosphere using the HALO Aircraft)

TACTS已被科学指导委员会(德语：Wisenschaftlicher Lenkungsausschuss，WLA)选为新Halo飞机的首批科学任务之一，将优先执行。在最初的规划中，TACTS计划在2009年秋季进行。该任务已提出，并由申请者协调。TACTS任务将包括奥贝普法芬霍芬和佛得角群岛之间的三个横断面，以测量各种微量气体。科学目的是调查在夏季和秋季之间观察到的平流层最低层组成的强烈变化(例如，恩格尔等人，2006年)。在此，我申请协助协调这一活动，并为参与TACTS的大学研究所支付额外的飞行和任务认证费用。经与参与TACTS活动的科学伙伴达成一致，我进一步申请延长TACTS运动，以便涵盖UTLS区域的整个年度微量气体观测周期。这一扩展将被称为SALSA(使用Halo飞机的空气质量传输的季节性和起源于最低平流层)。SALSA的科学基础是，平流层-对流层交换(STE)的许多方面具有很强的季节性，只有在有整个年度观测周期的情况下，才能理解驱动过程。探测UTLS中成分、气团来源和输送路径可能的长期变化的一个先决条件是彻底量化这一大的季节性循环。这是萨尔萨的主要目标之一。协调活动将包括后勤组织和战役准备、有效载荷的组织以及DLR、仪器团队和支持团队之间的沟通。数据集的质量控制和参与TACTS/SASA的小组之间的科学研究协调也是这项建议的一部分。因此，这项建议的主要目的是提供一个高质量的数据集，以调查夏季和秋季之间进入平流层最低层的空气质量输送的科学问题，并在该项目的扩展框架内，提供全球热带气旋最低层轨迹分布的年度周期，以便提供更全面的情况，从而能够通过将观测与模式研究相结合来调查对最低平流层和基本过程的季节性影响。

TACTS has been chosen as one of the first scientific missions for the new HALO aircraft by the scientific steering committee (German: Wissenschaftlicher Lenkungsausschuss, WLA) to be carried out with priority. In the initial planning, TACTS was scheduled for the fall of 2009. The mission has been proposed and is co-ordinated by the applicant. The TACTS mission will consist of three transects between Oberpfaffenhofen and the Cape Verde Islands to measure a wide range of trace gases. The scientific aim is to investigate the strong change in composition of the lowermost stratosphere observed between summer and fall (e.g. Engel et al., 2006). Here, I apply for assistance in the co-ordination of the campaign, and for the additional flight and mission certification costs for the University institutes involved in TACTS. In agreement with the scientific partners involved in TACTS, I further apply for an extension of the TACTS campaign, in order to cover an entire annual cycle of trace gas observations in the UTLS region. This extension will be called SALSA (Seasonality of Air mass transport and origin in the Lowermost Stratosphere using the HALO Aircraft). The scientific rationale for SALSA is that many aspects of Stratosphere-Troposphere-exchange (STE) have a strong seasonality and the driving processes can only be understood if an entire annual cycle of observations is available. A prerequisite for detecting possible long term changes in composition, air mass origin and transport pathways in the UTLS is a thorough quantification of this large seasonal cycle. This is one of the main goals of SALSA. The co-ordination activity will consist of the logistical organisation and preparation of the campaign, the organisation of the payload and the communication between DLR, the instrument teams and the support teams. Quality Control of the data set and co-ordination of scientific studies between the groups involved in TACTS/SALSA are also part of this proposal. The main aim of this proposal is thus to provide a high quality data set needed to investigate the scientific question of air mass transport into the lowermost stratosphere between summer and fall and in the frame of the extension of the project, the provision of an annual cycle of trace distributions in the UTLS, in order to provide a more complete picture, which will allow the investigation of seasonal influences on the UTLS and the underlying processes by combining the observations with model studies.