ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 43 Issue 5 > 2017,43(5):573-580. DOI:10.7519/j.issn.1000-0526.2017.05.006 Prev Next
Estimating Intensity of Tropical Cyclone over the Western North Pacific Based on FY3C/MWTSII Data
- Article
- Figures
- Metrics
- Preview PDF
- Reference
- Related
- Cited by
- Materials
Abstract:
A technique for estimating tropical cyclone (TC) intensity over the Western North Pacific utilizing FY3C Microwave Temperature Sounding (MWTSII) data was developed. First, the limbadjustment was conducted to correct the data of Channels 5-8 to the values they would have in a vertical view, and the corrected deviations were all smaller than the instrument sensitivity. Then the radiance anomaly (core value minus an average environmental value) was used to analyze the characteristics of the TC warm core, and the magnitude and shape feature of the warm core were found related to the TC intensity. As TC intensity gets stronger, the magnitude increases and the shape feature gets clearer and more complete. Finally, an estimation model was estabished using the maximun radiance anomaly of Channel 6 and Channel 7. The standard deviation was 13.0 hPa. After the correction of the bias resulted from the unevenly distribution of MWTSII footprints, the standard deviation was reduced to 12.0 hPa, and, then further reduced to 11.1 hPa after the latitude was taken into account.
Keywords:
Project Supported:
Clc Number:
Mobile website
