Relative humidity profiling with Megha-tropiques
نویسندگان
چکیده
منابع مشابه
Humidity profile retrieval from SAPHIR on-board the Megha-Tropiques
The Megha-Tropiques (MT) satellite, a joint IndoFrench mission, was launched by ISRO’s PSLV-C18 on 12 October 2011 from Sriharikota, India. SAPHIR, a microwave humidity sounder on-board Megha Tropiques operates in six channels with frequencies around 183.31 GHz. A radiative transfer simulationbased operational algorithm has been developed to retrieve layer-averaged relative-humidity (LARH) for ...
متن کاملA layer-averaged relative humidity profile retrieval for microwave observations: design and results for the Megha-Tropiques payload
A statistical method trained and optimized to retrieve seven-layer relative humidity (RH) profiles is presented and evaluated with measurements from radiosondes. The method makes use of the microwave payload of the Megha-Tropiques platform, namely the SAPHIR sounder and the MADRAS imager. The approach, based on a generalized additive model (GAM), embeds both the physical and statistical charact...
متن کاملValidation of humidity profiles obtained from SAPHIR, on-board Megha-Tropiques
The Megha-Tropiques, an Indo French mission, with four on-board payloads was launched in October 2011 to improve our understanding on hydrological cycle and radiation budget. The SAPHIR (Sondeur Atmosphérique du Profil d’Humidité Intertropicale par Radiométrie), a sounder for profiling humidity, is a key payload and expected to play a major role in fulfilling the mission objectives. The present...
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In this study, ab initio atmospheric profiles generated through high-resolution calculations from the community weather model WRF, suitably matched up with both TRMM Microwave Imager (TMI) and Precipitation Radar (PR) instruments of the TRMM satellite were used to compute simulated brightness temperatures (BTs) corresponding to SAPHIR frequencies, through an in-house polarized radiative transfe...
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1.Introduction Use of proxy satellite observations for improving the model states of divergence, humidity and temperature has gained considerable impetus in the past one decade. Various researchers (Donner, 1998,Heckley et al, 1990, Krishnamurti, 1990) have used the satellite derived rainfall and moisture fields ameliorating the spin up problem in the tropics. Physical initialization methods (P...
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