Comparison of AVHRR aerosol optical depth production against CARSNET data in China
2019
Abstract This study presents a dedicated evaluation of a newly released satellite
aerosolproduct derived from
Advanced Very-High-Resolution Radiometer(AVHRR) measurements by using the Deep Blue/
SOAR
aerosolretrieval algorithm.
Aerosolproduct from the Chinese
AerosolNetwork (CARSNET) is used as the
ground truthin the comparison. Comparison of AVHRR and CARSNET
aerosol
optical depth(AOD) products during 2006–2011 shows that the
accuracyand
precisionof AVHRR AOD demonstrate complicated spatial and seasonal dependence. First, AVHRR AOD is in good agreement with CARSNET AOD over eastern urban areas in China. 45%–78% of data points fall within the expected error range (±0.05 ± 0.25× AOD) over there. Second, in regions with natural vegetation cover and relatively clean environment conditions, low correlation is observed due to small AOD loadings (
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