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- W2355138800 abstract "AVHRR is the only source of remotely sensed data that includes continuous global cover for 1981-2000,and is the major component of the Long Term Data Record(LTDR) data sets consisting of AVHRR-MODIS-VIIRS.However,since AVHRR was originally designed for climate research,its use in earth science faces various problems.Many efforts have been made to resolve these problems since the early 1980s,and as a result there are several different AVHRR data sets.This paper compares three widely used AVHRR data sets(PAL,GIMMS,and LTDR) in terms of data completeness,spatial and temporal resolution,map projection,file format,sensor calibration,satellite orbital drift correction,cloud detection,atmospheric correction,data content,and quality assessment.There are two versions for PAL: ALP I and ALP II,which have slightly different algorithms but two common aspects-there is little or no correction for effects from aerosols,no correction for effects from two volcano eruptions,and no correction for trans-satellite variation.That means PAL time series may suffer from periodic variation resulting from trans-satellite inconsistency,and also may suffer from spatial inconsistency for some regions after major volcano eruptions.GIMMS data sets have more coverage than PAL,spatially and temporally.It has only NDVI,and was improved by correcting for effects of satellite orbital drift and volcanic eruptions,but no atmospheric correction was conducted.There are two versions of GIMMS,but these differ mainly in map projection and file format rather than data quality.LTDR is an on-going project,and its objective is to develop a long term data record using AVHRR,MODIS,and VIIRS.According to the plan,AVHRR will be reprocessed using a MODIS-like algorithm,and a MODIS-comparable product will be developed.It can be concluded from the analysis that it is reasonable to review certain AVHRR-based literatures with up-to-date knowledge,and each AVHRR data set should be applied within its limitations." @default.
- W2355138800 created "2016-06-24" @default.
- W2355138800 creator A5083880993 @default.
- W2355138800 date "2008-01-01" @default.
- W2355138800 modified "2023-09-27" @default.
- W2355138800 title "Advances in AVHRR Global Time Serials:PAL-GIMMS-LTDR" @default.
- W2355138800 hasPublicationYear "2008" @default.
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