Atmospheric Transmittance of AMSU Channels: A Fast Computation Model

Authors

Tsung-Hua Kuo, Graduate Student, Institute of Space Science, National Central University, Chung-Li, Taiwan 320.Follow
Gin-Rong Liu, Professor, Center for Space and Remote Sensing Research, National Central University, Chung-Li, Taiwan 320.
Chen-Gen Huang, Graduate Student, Institute of Atmospheric Science, National Central University, Chung-Li, Taiwan 320.
Tang-Huang Lin, Assistant Professor, Air Force Aeronautical and Technical School, Gang-Shan, Taiwan 820.
Chung-Chih Liu, Assistant Professor, Air Force Aeronautical and Technical School, Gang-Shan, Taiwan 820.

Abstract

In this study, the atmospheric transmittance of individual NOAA AMSU microwave channels was computed into a 40-layer atmospheric line-by-line FASCODE radiation model. Long-term sounding data from 1956 to 1991 collected over the Taiwan area was used to construct a 40-layer standard atmospheric model for the island. The simulated transmittance was also used to establish a regression-based fast-algorithm model to compute the atmospheric transmittance of Taiwan and its surrounding areas for various purposes. Despite the fact that the lower atmospheric layers of channels 14-18 indicated larger errors, the overall results revealed that the absolute value difference between the AMSU pass band-averaged transmittances computed through FASCODE and the test model was smaller than 0.01 and 0.001 in the oxygen and water vapor channels, respectively.

Recommended Citation

Kuo, Tsung-Hua; Liu, Gin-Rong; Huang, Chen-Gen; Lin, Tang-Huang; and Liu, Chung-Chih (2002) "Atmospheric Transmittance of AMSU Channels: A Fast Computation Model," Journal of Marine Science and Technology: Vol. 10: Iss. 2, Article 5.
DOI: 10.51400/2709-6998.2308
Available at: https://jmstt.ntou.edu.tw/journal/vol10/iss2/5