Targeted meteorological observations from a network of stratospheric balloons: the ACACIAS project

Physics

Scientific paper

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Balloons, Earth Stratosphere

Scientific paper

Recent field experiments have demonstrated that it is possible to identify in advance regions where observations of atmosphere are crucial. These observations, called adaptive or targeted observations are in particular very useful to improve our skill to predict on a short range weather severe events over Europe. Currently, adaptive observations are performed by the way of dropsondes launched from aircraft. The possibility of getting such observations in an operational mode is now to be studied. Stratospheric balloons could be good candidates to drive the dropsondes where and when needed. The aim of the French ACACIAS project is to study a suited type of balloon and demonstrate its capability to satisfy the mission requirements described hereafter. A feasibility study has been carried out. The first results show that, in our study case, it is possible to choose launch sites to have balloon observations over sensitive areas and that playing with the ballast mass, it is possible to have a balloon position phased with those areas in order to drop there a series of dropsondes.

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