| The 5-channel Advanced Microwave Sounding Unit-B (AMSU-B) and the 22-GHz channel (1) data from the AMSU-A provide microwave moisture data. Channels 2 through 5 of the AMSU-B are sensitive to atmospheric moisture. The horizontal resolution for the AMSU-B is 16 km (at nadir), and the vertical resolution is about 2.5 km. Channel 1 of the AMSU-A is sensitive to total atmospheric moisture, with a horizontal resolution of 48 km and a vertical resolution of about 5 km. |
| The 15-channel Advanced Microwave Sounding Unit-A (AMSU-A) provides temperature sounding. Channels 4 through 14 are sensitive to atmospheric temperature. The horizontal resolution is 48 km (at nadir), and the vertical resolution is about 3.5 km. |
| Infrared moisture data are provided by the 20-channel High-Resolution Infrared Radiation Sounder (HIRS). Channels 10 through 12 are sensitive to atmospheric moisture; channels 6 and 7 are slightly sensitive to atmospheric moisture. The horizontal resolution is 18 km (at nadir) and the vertical resolution is about 3 km. |
| Infrared temperature data are provided by the 20-channel High-Resolution Infrared Radiation Sounder (HIRS). Channels 1 through 7 and 13 through 17 are sensitive to atmospheric temperature. The horizontal resolution is 18 km (at nadir) and the vertical resolution is about 3 km. |