Fig. 2

Comparison of observed and simulated BTs for clear-sky pixels over the ocean. Results are shown for MODIS band 27 (water vapor absorption band) and band 31 (window band). Scatterplots of observed BTs (a, b) and differences in the observation from the simulation (c, d). Red lines in a and b denote fit lines with a slope constrained to be 1. Red lines in c and d denote biases. Each data point represents mean values over a 20 km² segment