Support proposal for refurbishment and replacement of a micorwave spectrometer to be used in the priority programme CAWSES

支持翻新和更换优先计划 CAWSES 中使用的微波光谱仪的提案

• 批准号: 16932611
• 负责人: Professor Dr. Franz-Josef Lübken
• 金额: --
• 依托单位: Max-Planck-Institut für Sonnensystemforschung (MPS)
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2005
• 资助国家: 德国
• 起止时间: 2004-12-31 至 2007-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/16932611?language=en
• 关键词: Support; proposal; refurbishment; replacement; micorwave

On June 29, 2004, the senat of the German Science Foundation (DFG = Deutsche Forschungsgemeinschaft) announced a new priority programme called Climate and Weather of the Sun-Earth System (CAWSES). Thereafter several proposals from individual scientists were submitted for this programme. The review and selection of proposals took place in a meeting in Walberberg (close to Cologne) on January 26-27, 2005. It turned out during this meeting that a majority of accepted proposals have an urgent request for trace gas measurements in the upper atmosphere. Special interest exists for water vapor measurements in the stratosphere and mesosphere at mid and polar latitudes (see section 2 for more details). The Max-Planck-Institute for Solar System Research in Katlenburg-Lindau (MRS) owns a ground based microwave spectrometer at the ALOMAR observatory in Northern Norway (69°N) which is the only system world wide which is capable to measure water vapour profiles up to the upper mesosphere at polar latitudes. This instrument is in operation since approximately 10 years and has led to some important scientific results and publications, for example the observation that shuttle launches can enhance ice particle generation in the upper atmosphere. This result was highlighted on the title page of Geophysical Research Letters, volume 30, No. 10, from Mai 15, 2003 (see enclosure).The instrument is now in continuous operation for more than 100000 hours and shows severe deterioration. We reckon that the system will fail within the next months. This would terminate a unique data sequence and would stop measurements which are urgently needed for the priority programme, especially on the solar cycle variation of water vapour concentrations in the mesosphere. We hereby apply for financial support amounting to 209 k¿ to refurbish and repair the existing microwave spectrometer. As will be explained in section 5 the MPS significantly contributes to this task. However, since the exploration of the terrestrial atmosphere is no longer in the scientific focus of MPS, external support is required.

2004年6月29日，德国科学基金会（DFG = Deutsche Forschungsgemeinschaft）宣布了一项新的优先计划，称为日地系统的气候和天气（CAWSES）。此后，科学家个人为该方案提交了几份提案。2005年1月26日至27日在沃尔伯贝格（靠近科隆）举行的一次会议上对提案进行了审查和选择。在这次会议上，大多数被接受的提案都迫切要求在高层大气中进行痕量气体测量。对中纬度和极纬度平流层和中间层的水汽测量特别感兴趣（详见第2节）。位于卡特伦堡-林道的马克斯-普朗克太阳系研究所在挪威北方（北纬69°）的ALOMAR观测站拥有一台地面微波分光计，这是全世界唯一能够测量极地纬度中层上层水蒸气分布的系统。这一仪器已运行了大约10年，并产生了一些重要的科学成果和出版物，例如观察到航天飞机的发射可以增加高层大气中冰粒的生成。这一结果在2003年5月15日出版的《地球物理研究快报》第30卷第10期的标题页上作了突出介绍（见附文）。该仪器目前已连续运行10万多小时，显示出严重的退化。我们估计这个系统将在今后几个月内失效。这将终止一个独特的数据序列，并将停止优先方案迫切需要的测量，特别是关于中间层水汽浓度的太阳周期变化的测量。我们在此申请209千美元的财政支持，以整修和修理现有的微波光谱仪。正如第5节所解释的，MPS对这项任务做出了重大贡献。然而，由于陆地大气的探索不再是MPS的科学重点，因此需要外部支持。