Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1117/12.2186816 |
Toward consistent radiometric calibration of the NOAA AVHRR visible and near-infrared data record | |
Bhatt, Rajendra1; Doelling, David R.2; Scarino, Benjamin R.1; Gopalan, Arun1; Haney, Conor O.1 | |
通讯作者 | Bhatt, Rajendra |
会议名称 | Conference on Earth Observing Systems XX |
会议日期 | AUG 10-13, 2015 |
会议地点 | San Diego, CA |
英文摘要 | The 35-year Advanced Very High Resolution Radiometer (AVHRR) satellite-instrument data record is critical for studying decadal climate change, provided that the AVHRR sensors are consistently calibrated. Owing to the lack of onboard calibration capability, the AVHRR data need to be adjusted using vicarious approaches. One of the greatest challenges hampering these vicarious calibration techniques, however, is the degrading orbits of the NOAA satellites that house the instruments, or, more specifically, the fact that the satellites eventually drift into a terminator orbit several years after launch. This paper presents a uniform sensor calibration approach for the AVHRR visible (VIS) and near-infrared (NIR) records using specifically designed NOAA-16 AVHRR-based, top-of-atmosphere (TOA) calibration models that take into account orbit degradation. These models are based on multiple invariant Earth targets, including Saharan deserts, polar ice scenes, and tropical deep-convective clouds. All invariant targets are referenced to the Aqua-MODIS Collection-6 calibration via transfer of the Aqua-MODIS calibration to NOAA-16 AVHRR using simultaneous nadir overpass (SNO) comparisons over the North Pole. A spectral band adjustment factor, based on SCanning Imaging Absorption SpectroMeter for Atmospheric CartograpHY (SCIAMACHY) spectral radiances, is used to account for the spectrally-induced biases caused by the spectral response function (SRF) differences of the AVHRR and MODIS sensors. Validation of the AVHRR Earth target calibration is performed by comparisons with contemporary MODIS SNOs. Calibration consistency between Earth targets validates the historical AVHRR record. |
英文关键词 | AVHRR MODIS SCIAMACHY calibration invariant targets |
来源出版物 | EARTH OBSERVING SYSTEMS XX |
ISSN | 0277-786X |
出版年 | 2015 |
卷号 | 9607 |
EISBN | 978-1-62841-773-9 |
出版者 | SPIE-INT SOC OPTICAL ENGINEERING |
类型 | Proceedings Paper |
语种 | 英语 |
国家 | USA |
收录类别 | CPCI-S |
WOS记录号 | WOS:000366503200002 |
WOS关键词 | HIGH-RESOLUTION RADIOMETER ; IR BANDS ; STABILITY ; CHANNELS ; DESERT ; SPACECRAFT |
WOS类目 | Instruments & Instrumentation ; Optics |
WOS研究方向 | Instruments & Instrumentation ; Optics |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/304299 |
作者单位 | 1.SSAI, Hampton, VA 23666 USA; 2.NASA, Langley Res Ctr, Hampton, VA 23681 USA |
推荐引用方式 GB/T 7714 | Bhatt, Rajendra,Doelling, David R.,Scarino, Benjamin R.,et al. Toward consistent radiometric calibration of the NOAA AVHRR visible and near-infrared data record[C]:SPIE-INT SOC OPTICAL ENGINEERING,2015. |
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