Journal
MARINE GEODESY
Volume 27, Issue 1-2, Pages 279-297Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/01490410490465265
Keywords
microwave radiometer; brightness temperature; calibration; wet tropospheric path delay; satellite altimetry; sea level change
Categories
Funding
- Office of Research and Applications of the National Oceanic and Atmospheric Administration (NOAA) [263100-B-4572]
Ask authors/readers for more resources
The radiometers on board the satellites ERS-1, TOPEX/Poseidon, ERS-2, GFO, Jason-1, and Envisat measure brightness temperatures at two or three different frequencies to determine the total columnal water vapor content and wet tropospheric path delay, a major correction to the altimeter range measurements. In order to asses the long-term stability of the path delay, the radiometers are calibrated against vicarious cold and hot references, against each other, and against several atmospheric models. Four of these radiometers exhibit significant drifts in at least one of the channels, resulting in yet unmodeled errors in path delay of up to 1 mm/year, thus limiting the accuracy at which global sea level rise can be inferred from the altimeter range measurements.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available