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Welcome to the Land Long Time Data Record Quality Assessment Web Page
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The objective of LTDR QA is to evaluate and document the scientific quality
of the global LTDRs (Long Term Data Records) made from remotely sensed data
acquired using AVHRR (Advanced Very High Resolution Radiometer), MODIS
(Moderate Resolution Imaging Spectroradiometer) and VIIRS (Visible/Infrared
Imager Radiometer Suite). LTDRs are currently being produced as single
global data
record for each science parameter at a coarse resolution of 0.05 deg.
Any discrepancy in the data records or QA-related issued
identified by the QA process are posted on the Known Issues web page. These
issues are updated as new versions of data records are produced using
improved algorithms.
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