Open AccessThe warm‐core structure of Super Typhoon Rammasun derived by FY‐3C microwave temperature sounder measurements
Author(s) -
Wang Xiang,
Ren Yifang,
Li Xun
Publication year - 2016
Publication title -
atmospheric science letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.951
H-Index - 45
ISSN - 1530-261X
DOI - 10.1002/asl.675
Subject(s) - typhoon , environmental science , microwave , remote sensing , core (optical fiber) , meteorology , advanced microwave sounding unit , atmospheric sciences , physics , geology , optics , quantum mechanics
The microwave temperature sounder (MWTS) on board the third FengYun satellite (FY‐3C) is well suited for the detection of tropical cyclones because the observed radiance is insignificantly affected by non‐precipitating clouds. In this study, a stepwise multiple linear regression technique is proposed to retrieve the atmospheric temperature profiles based on MWTS measurements. Under clear‐sky conditions, the root‐mean‐square error of retrieved temperature is no >1.4 K, which is low enough to monitor the thermal structure within typhoons. An application of this method to the Super Typhoon Rammasun resolves the warm‐core eye and temperature gradients across the eye‐wall very well.