气候变化领域集成服务门户(CCPortal): Cross-calibration of MODIS and VIIRS long near infrared bands for ocean color science and applications

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DOI	10.1016/j.rse.2021.112439
	Cross-calibration of MODIS and VIIRS long near infrared bands for ocean color science and applications
	Barnes B.B.; Hu C.; Bailey S.W.; Pahlevan N.; Franz B.A.
发表日期	2021
ISSN	00344257
卷号	260
英文摘要	Generation of consistent multi-sensor datasets is critical to the assessment of long-term global changes using satellite-borne instruments. Recent research suggests, however, that a fundamental assumption in satellite ocean color data processing concerning the calibration of the long near infrared band (i.e., 865 nm for MODIS) may introduce sensor-specific biases in space and/or time, which may also contribute to cross-sensor inconsistency in the derived reflectance data products. As such, it is necessary to assess the calibration of this band across sensors – performed here for MODIS/Aqua and VIIRS/SNPP using ‘simultaneous same view’ matchups (SSV; similar to simultaneous nadir overpass, but allowing for non-nadir measurements). Towards that end, we assess geometric, temporal, and spatial homogeneity metrics to identify SSVs, and develop a band-shifting approach applicable within standard satellite data processing routines to resolve expected spectral differences in the radiometry. We find top-of-atmosphere (TOA) radiance data from VIIRS/SNPP long near infrared band to be approximately 3% higher than the corresponding MODIS/A data. With the expectation that cross-calibrating the NIRL should improve cross-sensor continuity of downstream geophysical products (e.g., chlorophyll-a), we reprocessed VIIRS data using updated calibration coefficients. While we noticed many minor improvements in cross-sensor continuity in such data products, large-scale geographic and temporal biases between these two datasets still remain. These discontinuities may be the result of disparate errors in polarization correction or atmospheric correction, both of which are modulated by radiant path geometry. © 2021 Elsevier Inc.
英文关键词	Calibration; MODIS; Simultaneous nadir overpass; VIIRS
语种	英语
scopus关键词	Data handling; Infrared devices; Overpasses; Radiometers; Radiometry; Satellites; Color applications; Color science; Cross calibration; Data products; Global change; Multi sensor; Near infrared band; Ocean color; Simultaneous nadir overpass; VIIRS; Calibration; calibration; data processing; MODIS; near infrared; ocean color; top of atmosphere; VIIRS
来源期刊	Remote Sensing of Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178846
作者单位	College of Marine Science, University of South Florida, St. Petersburg, FL 33701, United States; NASA Goddard Space Flight Center, 8800 Greenbelt Road, Greenbelt, MD 20771, United States; Science Systems and Applications Inc., 10210 Greenbelt Road, Lanham, MD 20706, United States
推荐引用方式 GB/T 7714	Barnes B.B.,Hu C.,Bailey S.W.,et al. Cross-calibration of MODIS and VIIRS long near infrared bands for ocean color science and applications[J],2021,260.
APA	Barnes B.B.,Hu C.,Bailey S.W.,Pahlevan N.,&Franz B.A..(2021).Cross-calibration of MODIS and VIIRS long near infrared bands for ocean color science and applications.Remote Sensing of Environment,260.
MLA	Barnes B.B.,et al."Cross-calibration of MODIS and VIIRS long near infrared bands for ocean color science and applications".Remote Sensing of Environment 260(2021).