The Megha-Tropiques mission: a review after three years in orbit

摘要: The Megha-Tropiques mission is operating a suite of payloads dedicated to the documentation water and energy cycles in intertropical region low inclination orbit. satellite was launched October, 2011 we here review scientific activity after first three years mission. microwave sounder (SAPHIR) broad band radiometer (SCARAB) are functioning nominally exhibit instrumental performances well within original specifications. imager, MADRAS, stopped acquisition data on January 26th, 2013 due mechanical failure. During its 16 months operation, this experienced electrical issues making usage difficult delayed validation. A geophysical products has been retrieved from payloads, ranging TOA radiative flux vapor profiles instantaneous rain rates. Some these have merged with geostationary provide, for instance, daily accumulation rainfall all over region. These compare favorably references ground based or space-borne observation systems. contribution unique orbit objectives investigated. Preliminary studies indicate positive impact both, humidity Numerical Weather Prediction forecasts thanks assimilation SAPHIR Level 1 data, estimation derived Global Precipitation Mission constellation. After long commissioning phase, most validated readily available further investigation by international community.