The impact of passband characteristics on imaging microwave radiometer brightness temperatures over the ocean
Article first published online: 21 JUN 2013
©2013. American Geophysical Union. All Rights Reserved.
Volume 48, Issue 3, pages 352–357, May-June 2013
How to Cite
2013), The impact of passband characteristics on imaging microwave radiometer brightness temperatures over the ocean, Radio Sci., 48, 352-357, doi:10.1002/rds.20041., and (
- Issue published online: 16 JUL 2013
- Article first published online: 21 JUN 2013
- Accepted manuscript online: 1 JUN 2013 12:14PM EST
- Manuscript Accepted: 17 MAY 2013
- Manuscript Revised: 14 MAY 2013
- Manuscript Received: 30 OCT 2012
- radiative transfer;
- frequency passband;
- brightness temperature;
 Radiative transfer modeling is used to estimate the effects of nonideal receiver frequency passband characteristics on the measured brightness temperatures from imaging microwave radiometers over the ocean. The analysis includes microwave frequencies from 6 to 40 GHz and applies to the lower frequency channels of conically scanning, space-based radiometers such as AMSR-E, SSMI, SSMIS, and WindSat. The analysis demonstrates that frequency passband characteristics can have significant effects on the brightness temperatures for microwave imaging channels. The largest effects are due to shifts in the center frequency of the passband. The imaging channels near the water vapor resonance at 22.235 GHz are most sensitive to passband characteristics. The effects for these channels depend on the water vapor in the scene.