First steps towards an all-sky assimilation framework for tropical cyclone event over Bay of Bengal region: Evaluation and assessment of GMI radiances

The present study designs a data assimilation framework for all-sky GMI radiances in the Weather Research Forecast (WRF) model for the prediction of tropical cyclone events over the Bay of Bengal (BOB) region. Experiments are performed using the RTTOV-SCATT radiative transfer model for three cyclone...

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Bibliographic Details
Published in:Atmospheric research 2021-08, Vol.257, p.105564, Article 105564
Main Authors: Mangla, Rohit, J, Indu, Chambon, Philippe, Mahfouf, Jean-François
Format: Article
Language:English
Subjects:
Cyclones
Discrete dipole approximation
FG departures
GMI
RTTOV
WRF
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Summary:The present study designs a data assimilation framework for all-sky GMI radiances in the Weather Research Forecast (WRF) model for the prediction of tropical cyclone events over the Bay of Bengal (BOB) region. Experiments are performed using the RTTOV-SCATT radiative transfer model for three cyclone events (Hudhud (2014), Vardah (2016), and Kyant (2016)) for 19 V, 23 V, 37 V, 89 V, 166 V, 183±3, and 183±7 V channels. Results show that observed and simulated brightness temperatures (Tb) agree well for low-frequency channels (
ISSN:0169-8095
1873-2895
DOI:10.1016/j.atmosres.2021.105564