Comparison of Atmospheric Methane Retrievals From AIRS and IASI IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing

Atmospheric methane (CH 4 ) is a standard product of the atmospheric infrared sounder (AIRS) aboard NASA's Aqua satellite, generated at the NASA Goddard Earth Sciences Data and Information Services Center (NASA/GES/DISC), and a product of the infrared atmospheric sounding interferometer (IASI) aboard METOP-A,-B, generated at National Oceanic and Atmospheric Administration's Comprehensive Large Array-data Stewardship System. In order to understand the capability of these two sensors in observing the spatial and temporal distribution of CH 4 , this paper compares the CH 4 products from AIRS and IASI with aircraft measurements, as well as the corresponding time series in tropics and high northern latitude regions.