NDLI: Aquarius whole range calibration: Celestial Sky, ocean, and land targets

Content Provider	IEEE Xplore Digital Library
Author	Dinnat, E.P. Le Vine, D.M. Bindlish, R. Piepmeier, J.R. Brown, S.T.
Copyright Year	2014
Description	Author affiliation: Microwave Instrum. Technol. Branch, NASA-Goddard Space Flight Center, Greenbelt, MD, USA (Piepmeier, J.R.) \|\| NASA- Jet Propulsion Lab., Pasadena, CA, USA (Brown, S.T.) \|\| Cryospheric Sci. Lab., Chapman Univ., Greenbelt, MD, USA (Dinnat, E.P.) \|\| USDA-ARS, Beltsville, MD, USA (Bindlish, R.) \|\| Cryospheric Sci. Lab., NASA-Goddard Space Flight Center, Greenbelt, MD, USA (Le Vine, D.M.)
Abstract	Aquarius is a spaceborne instrument that uses L-band radiometers to monitor sea surface salinity globally. Other applications of its data over land and the cryosphere are being developed. Combining its measurements with existing and upcoming L-band sensors will allow for long term studies. For that purpose, the radiometers calibration is critical. Aquarius measurements are currently calibrated over the oceans. They have been found too cold at the low end (celestial sky) of the brightness temperature scale, and too warm at the warm end (land and ice). We assess the impact of the antenna pattern model on the biases and propose a correction. We re-calibrate Aquarius measurements using the corrected antenna pattern and measurements over the Sky and oceans. The performances of the new calibration are evaluated using measurements over well instrument land sites.
Starting Page	192
Ending Page	196
File Size	929811
Page Count	5
File Format	PDF
e-ISBN	9781479946440
DOI	10.1109/MicroRad.2014.6878937
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-03-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Temperature measurement Antenna measurements Sea measurements Microwave Radiometry Calibration Ocean temperature Antennas L-band Aquarius
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Aquarius whole range calibration: celestial sky, ocean, and land targets

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