德沃夏克分析法
The Cooperative Institute for Meteorological Satellite Studies (CIMSS) at the University of Wisconsin–Madison has developed the Objective Dvorak Technique (ODT). This is a modified version of the Dvorak technique which uses computer algorithms rather than subjective human interpretation to arrive at a CI number. This is generally not implemented for tropical depressions or weak tropical storms. The China Meteorological Agency (CMA) is expected to start using the standard 1984 version of Dvorak in the near future. The Indian Meteorological Department (IMD) prefers using visible satellite imagery over infrared imagery due to a perceived high bias in estimates derived from infrared imagery during the early morning hours of convective maximum. The Japan Meteorological Agency (JMA) uses the infrared version of Dvorak over the visible imagery version. Hong Kong Observatory and JMA continue to utilize Dvorak after tropical cyclone landfall. Various centers hold on to the maximum current intensity for 6–12 hours, though this rule is broken when rapid weakening is obvious.