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Development of AOD Best Estimate Product at ARM SGP Site

 
Poster PDF

Authors

Justin Monroe — University of Oklahoma
Evgueni Kassianov — Pacific Northwest National Laboratory
Laura Dian Riihimaki — CIRES | NOAA ESRL GML
Connor J. Flynn — University of Oklahoma School of Meteorology
Erol Cromwell — Pacific Northwest National Laboratory
Annette S. Koontz — Pacific Northwest National Laboratory

Category

General topics – Aerosols

Description

A continuous multi-year record of aerosol optical depth (AOD) is required for improved understanding of the complex aerosol-related processes for a given climate-important region. Four ARM-supported ground-based instruments deployed at the ARM SGP Central Facility (CF), namely two co-located (C1 and E13) Multifilter Rotating Shadowband Radiometers (MFRSRs), a Normal Incidence Multifilter Radiometer (NIMFR), and a Cimel sunphotometer (CSPHOT), can be used for development of the required record. Such development is a challenging task mainly due to two main issues: (1) discontinuous and partially overlapping AOD records provided by individual instruments; (2) instrument- and time-dependent data quality. Here we will introduce an approach for the development of a multi-year (1997-2017) record with good AOD data epochs at the ARM SGP CF by merging the historical time series of AOD from individual instruments and the corresponding data quality information. We also provide uncertainty of the good AOD data epochs and discuss their expected applications.