SGER: Antarctic GPS Radio Occultation Profiling from Stratospheric Balloons

SGER：平流层气球的南极 GPS 无线电掩星剖面

• 批准号: 0814290
• 负责人: Jennifer Haase
• 金额: $ 13.38万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-08-01 至 2010-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0814290&HistoricalAwards=false
• 关键词: SGER; Antarctic; GPS; Radio; Occultation

A drifting platform at stratospheric heights presents a unique opportunity to profile the Antarctic atmosphere that can increase our understanding of upper atmosphere dynamics in regions that are poorly sampled by conventional techniques. For example, understanding changes leading up to the breakup of the polar vortex in spring is important to understanding the impact of carbon dioxide (CO2) versus ozone induced forcing of Antarctic climate. The Centre Nationale d'Etudes Spatiales, in France, has developed a stratospheric super-pressure balloon that flies at constant density at 20 km altitude for deployment during an Antarctic measurement campaign in September 2009. A modified version of Haase's airborne radio occultation system will be developed for incorporation into the balloon payload. This prototype system will record two profiles per hour for the approximately 90 day journey of the stratospheric balloon within the polar vortex. These exploratory data will pave the way for future campaigns that will contribute sufficient data to improve substantially model representations of the springtime breakup of the Antarctic polar vortex. These data will contribute to improved methods for assimilating other advanced satellite sounder data, in particular the Infrared Atmospheric Sounding Interferometer (IASI).This grant will foster close collaboration with international scientists in France who have unique expertise in observations from stratospheric balloons. This will be of mutual value to both nation's scientific activities.

平流层高度的漂流平台提供了一个独特的机会，可以介绍南极气氛，这可以增加我们对传统技术采样不佳的地区的高层大气动态的理解。例如，了解导致春季极性涡流的变化对于理解二氧化碳（CO2）与臭氧诱导的南极气候的影响很重要。法国中心的Nationale d'Etudes空间已经开发了一种平流层超压球气球，该气球在2009年9月在南极测量活动中以20 km高度的恒定密度飞行，以进行部署。Haase的空气生态无线电系统的修改版将被开发为集合到球球上。该原型系统将每小时记录两个轮廓，对于极地涡流中平流层气球的大约90天旅程。这些探索性数据将为未来的竞选活动铺平道路，这将有助于足够的数据，以改善南极极性涡流的春季破裂的实质性模型。这些数据将有助于改进的方法来吸收其他先进的卫星声音数据，尤其是红外大气发声干涉仪（IASI）。这项格兰特将与法国的国际科学家建立密切合作，这些国际科学家在平流层气球中具有独特的观察知识。这对两个国家的科学活动都具有相互价值。