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Remote Sens. 2016, 8(4), 332; doi:10.3390/rs8040332

Validation of ATMS Calibration Accuracy Using Suomi NPP Pitch Maneuver Observations

1
NOAA Center for Satellite Applications and Research, College Park, MD 20740, USA
2
Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD 20740, USA
*
Author to whom correspondence should be addressed.
Academic Editors: Xuepeng Zhao, Wenze Yang, Viju John, Hui Lu, Ken Knapp, Richard Müller, Dongdong Wang and Prasad S. Thenkabail
Received: 31 January 2016 / Revised: 5 April 2016 / Accepted: 7 April 2016 / Published: 15 April 2016
(This article belongs to the Special Issue Satellite Climate Data Records and Applications)
View Full-Text   |   Download PDF [1763 KB, uploaded 15 April 2016]   |  

Abstract

The Suomi National Polar-orbiting Partnership (SNPP) satellite was launched on 28 October, 2011, and carries the Advanced Technology Microwave Sounder (ATMS) onboard. Currently, ATMS performance in orbit is very stable and the calibration parameters (e.g., noise and accuracy) meet specifications. This study documents an ATMS calibration error budget model and its results for community reference. The calibration accuracy is also verified with the ATMS pitch maneuver observations of cold space. It is shown that the ATMS pitch maneuver cold space observations at center positions are inconsistent with the values predicted by the instrument calibration error budget model. The biases also depend on scan angle. This scan-angle dependence may be caused by the ATMS plane reflector emission. Thus, a physical model is developed to simulate the radiation emitted from the reflector and is recommended as part of ATMS radiance calibration to further improve the sensor data record (SDR) data quality. View Full-Text
Keywords: ATMS; Calibration; Pitch-Maneuver ATMS; Calibration; Pitch-Maneuver
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Weng, F.; Yang, H. Validation of ATMS Calibration Accuracy Using Suomi NPP Pitch Maneuver Observations. Remote Sens. 2016, 8, 332.

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