Articles | Volume 8, issue 10
Atmos. Meas. Tech., 8, 4083–4110, 2015
https://doi.org/10.5194/amt-8-4083-2015
Atmos. Meas. Tech., 8, 4083–4110, 2015
https://doi.org/10.5194/amt-8-4083-2015

Research article 07 Oct 2015

Research article | 07 Oct 2015

Towards a long-term global aerosol optical depth record: applying a consistent aerosol retrieval algorithm to MODIS and VIIRS-observed reflectance

R. C. Levy et al.

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Short summary
Aerosol optical depth (AOD) is an essential climate variable, so we seek to create a long-term AOD record. From MODIS, we have 15+ years, which we want to continue with VIIRS. Accounting for instrumental difference, we have developed a MODIS-like algorithm for VIIRS, and applied it to overlapping 2-year time period. In general, the two data sets are similar, except for VIIRS being high-biased over ocean. We discuss the impacts of calibration, resolution, and sampling on the results.