Validation of Advanced Dvorak Technique (ADT) over north Indian Ocean
Keywords:Tropical cyclone, Satellite, Advanced Dvorak Technique (ADT), Intensity, Arabian Sea and Bay of Bengal
The Advanced Dvorak Technique (ADT) has been installed in India Meteorological Department experimentally since 2014. There is a need to validate this technique before it’s used operationally. Hence a study has undertaken to validate ADT (V8.1.3B) & ADT (V8.2.1) based on all the TCs (34 Knots & above) over the North Indian Ocean during 2014 & 2015 (total 7 no.). The performance of ADT has been compared with manual T number. It indicates that ADT (V8.2.1) overestimates by about 1 T number as compared to manual T number of 1.0 to 2.5 and underestimates by about 0.5 to 1 T number as compared to manual T number of 4.0 to 5.5. Further comparison with CIMSS ADT indicates that IMD ADT underestimates by about 1 T number compared to T number based on CIMSS ADT.
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