Paper Info
Title
Post calibration of channel 1 of NOAA-14 AVHRR: Implications on aerosol optical depth retrieval
Abstract
In order to produce long-term aerosol optical depth (AOD) dataset over land from the Advanced Very High Resolution Radiometer (AVHRR), AVHRR data quality in terms of radiometric calibration must be maintained. A vicarious calibration method have been developed by incorporating well calibrated Sea-Viewing Wide Field-of-View Sensor (SeaWiFS) radiance data over several pseudo-invariant targets to inter-calibrate the channel 1 of AVHRR based on Bidirectional Reflectance Distribution Functions (BRDFs) and spectral band adjustment factor (SBAF) models for different targets. Comparison of our calibration coefficients with those of Pathfinder Atmospheres Extended (PATMOS-x) indicate the calibration accuracy to be within 2.5%. The operational L1B and recalibrated AVHRR radiance are applied to derive AOD maps over East America (dark surface) and West Africa (bright surface) using the land aerosol and bidirectional reflectance inversion by times series technique (LABITS) algorithm. Preliminary comparisons show that significant difference in the retrieved AOD from the two different calibration is expected, while the spatial distribut ion of AOD difference is complicated due to different surface brightness and deficiencies of numeric solutions.
Year
DOI
Venue
2014
10.1109/IGARSS.2014.6946728
IGARSS
Keywords
Field
DocType
atmospheric measuring apparatus,land aerosol reflectance inversion,spectral band adjustment factor model,avhrr channel 1 inter-calibration,calibration,atmospheric optics,west africa,east america,sbaf model,surface brightness,recalibrated avhrr radiance,operational l1b,land long-term aod dataset,avhrr data quality,spatial aod difference distribution,seawifs radiance data,calibration coefficient,advanced very high resolution radiometer,radiometric calibration,aerosols,numeric solution deficiency,patmos-x,aod,noaa-14 avhrr channel 1 post calibration,land bidirectional reflectance inversion,pseudoinvariant target,pathfinder atmosphere extended,radiometric calibration method,radiometers,aod map,brdf,labits algorithm,avhrr,calibration accuracy,times series technique algorithm,long-term aerosol optical depth dataset,well calibrated sea-viewing wide field-of-view sensor radiance data,aerosol optical depth retrieval implication,time series,bidirectional reflectance distribution function,atmospheric radiation,reflectivity,satellites,atmospheric modeling
Meteorology,Radiometric calibration,Optical depth,SeaWiFS,Computer science,Aerosol,Remote sensing,Advanced very-high-resolution radiometer,Spectral bands,Radiance,Calibration
Conference
ISSN
Citations 
PageRank 
2153-6996
0
0.34
References 
Authors
0
7
Name
Order
Citations
PageRank
Chi Li135.32
Yong Xue211857.61
Quanhua Liu3247.30
Jie Guang45026.12
Xingwei He501.35
Aojie Di601.35
Lu She715.79