NDLI: A roughness correction algorithm for aquarius using MWR

Content Provider	IEEE Xplore Digital Library
Author	Hejazin, Y. Jones, W.L. El-Nimri, S.
Copyright Year	2014
Description	Author affiliation: EECS Dept., Univ. of Central Florida, Orlando, FL, USA (Hejazin, Y.; Jones, W.L.; El-Nimri, S.)
Abstract	Aquarius/SAC-D is a collaborative earth science satellite mission, between NASA and the Argentine Space Agency, CONAE. The two microwave radiometers on the satellite are the NASA Aquarius (AQ, L-band 1.4 GHz) and the CONAE MicroWave Radiometer (MWR, Ka-band 36.5 GHz V-& H-pol and K-band 23.8 GHz H-pol). The mission science objective is to provide high-resolution global sea surface salinity (SSS) maps every 7-days, which are derived using the AQ combined L-band radiometer/scatterometer. The application of L-band radiometry to measure SSS is a difficult task, and there are many corrections that must be made correctly to obtain accurate SSS data. One of the major error sources is the effect of ocean roughness that “warms” the ocean brightness temperature (Tb) by 0.28 K. In this paper, an alternative sea surface roughness correction algorithm is presented that uses a new semi-empirical Radiative Transfer Model (RTM) to estimate the ocean emissivity. This RTM has been tuned using 1-years of observed AQ and MWR Tb's and corresponding atmospheric and oceanic environmental conditions from numerical weather and oceanographic models. Results of independent comparisons (not used in the RTM tuning process) will be presented between the AQ scatterometer derived ocean roughness correction and the MWR roughness correction algorithm. Also, SSS retrievals using these two independent approaches will be compared to an oceanographic salinity model, known as Hybrid Coordinate Ocean Model (HYCOM) salinity.
Starting Page	44
Ending Page	48
File Size	894927
Page Count	5
File Format	PDF
e-ISBN	9781479946440
DOI	10.1109/MicroRad.2014.6878905
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	Sea surface salinity Wind speed ocean roughness correction remote sensing Surface roughness Brightness temperature Rough surfaces Ocean temperature Aquarius
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
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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