Improvements to radiometric consistency between AVHRR, MODIS,
and VIIRS in SST bands using MICROS online near-real time system

Xingming Liang; Alexander Ignatov; Quanhua Liu; Yong Chen; David Groff; Xiaoxiong Xiong; Changyong Cao; Eva Borbas; Simon Hook

doi:10.1117/12.979597

9 November 2012 Improvements to radiometric consistency between AVHRR, MODIS, and VIIRS in SST bands using MICROS online near-real time system

Xingming Liang, Alexander Ignatov, Quanhua Liu, Yong Chen, David Groff, Xiaoxiong Xiong, Changyong Cao, Eva Borbas, Simon Hook

Author Affiliations +

Proceedings Volume 8528, Earth Observing Missions and Sensors: Development, Implementation, and Characterization II; 85280I (2012) https://doi.org/10.1117/12.979597
Event: SPIE Asia-Pacific Remote Sensing, 2012, Kyoto, Japan

Abstract

Monitoring of IR Clear-Sky Radiances over Oceans for SST nearreal time web-based system has been established in July 2008. It analyzes Model (Community Radiative Transfer Model, CRTM) minus Observation (M-O) biases in clear-sky ocean brightness temperatures (BT) in AVHRR bands 3.7 (IR37), 11 (IR11), and 12μm (IR12) onboard NOAA-16, -17, -18, -19 and Metop-A. In January 2012, AVHRR-like bands of VIIRS onboard the Suomi National Polar Partnership (S-NPP; launched in October 2012), and two MODIS instruments onboard Terra and Aqua, were included in MICROS. Double-differences are employed to check various sensors for radiometric consistency. The VIIRS and AVHRR have been in-family, and the consistency further improved after the VIIRS IR calibration was fine-tuned on 7 March 2012. However, MODIS M-O biases have been out of family (by -0.6K in IR 11, and -0.3K in IR12). Analyses have shown that these anomalies in MODIS M-O biases are caused by the "M" term, i.e., incorrect MODIS transmittance coefficients in CRTM v2.02. Based on feedback from NESDIS SST and U. Wisconsin Teams, CRTM Team updated transmittance coefficients in CRTM v2.10. As a result, MODIS M-O biases are now in agreement with AVHRR/VIIRS. However, cross-platform Terra/Aqua bias of ~0.3 K in Ch20 (3.9μm) remains, likely due to calibration uncertainties in MODIS L1b product. This paper documents the joint effort by the SST, MODIS Characterization Support and CRTM Teams towards identifying and resolving observed cross-platform inconsistencies.

Citation Download Citation

Xingming Liang, Alexander Ignatov, Quanhua Liu, Yong Chen, David Groff, Xiaoxiong Xiong, Changyong Cao, Eva Borbas, and Simon Hook "Improvements to radiometric consistency between AVHRR, MODIS, and VIIRS in SST bands using MICROS online near-real time system", Proc. SPIE 8528, Earth Observing Missions and Sensors: Development, Implementation, and Characterization II, 85280I (9 November 2012); https://doi.org/10.1117/12.979597

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
12 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

MODIS

Sensors

Satellites

Calibration

Atmospheric modeling

Clouds

Data processing

Show All Keywords

Keywords/Phrases

Search In:

Publication Years