This figure shows the global over land area-weighted time series of DB (a) AOD at 550 nm and (b) AOD anomaly and decadal trends, from MODIS Terra (red) and Aqua (blue), and (c) the time series and decadal trend in the Terra-Aqua AOD difference. Uncertainties in calculated trends are presented as 90% confidence intervals.
We are pleased to announce the publication of a new paper describing the calibration improvements made to MODIS Terra data included in the Collection 6 reprocessing of the Deep Blue aerosol products. The paper also discusses the validation of the data set against AERONET, its stability over the mission to date, and the consistency between Terra and Aqua data. In brief, Terra data are stable over the mission to date (2000-2015) to within a precision of approximately 0.01 in AOD, and show strong stability, and global and regional consistency, when compared to the Aqua record (2002 onwards). This relies on the extensive efforts of the MODIS Characterization Support Team and Ocean Biology Processing Group in improving and maintaining the high radiometric quality of the source MODIS data.
The reference for the paper is as follows:
Sayer, A. M., N. C. Hsu, C. Bettenhausen, M.-J. Jeong, and G. Meister (2015), Effect of MODIS Terra radiometric calibration improvements on Collection 6 Deep Blue aerosol products: Validation and Terra/Aqua consistency, J. Geophys. Res. Atmos., 120, doi:10.1002/2015JD023878.