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Proceedings Paper

Climatology of aerosol optical depth at mid-continental US site: ground-based observations
Author(s): Evgueni Kassianov; Justin Monroe; Laura Riihimaki; Connor Flynn; Erol Cromwell; Gary Hodges; Allison McComiskey
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Paper Abstract

The total aerosol burden in the atmosphere is typically represented by aerosol optical depth (AOD). To capture important and climate-relevant signatures of the aerosol burden, such as year-to-year and seasonal variability, continuous multi-year AOD observations are required. For more than two decades, these observations have been performed at the mid-continental Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) Central Facility (CF) using ground-based passive remote sensing. The partially overlapping and fragmentary AOD records at the ARM SGP CF have been provided by four individual instruments, namely two co-located (C1 and E13) Multifilter Rotating Shadowband Radiometers (MFRSRs), a Normal Incidence Multifilter Radiometer (NIMFR), and a Cimel Sunphotometer (CSPHOT). Since these individual records are sporadic with instrument- and time-dependent data quality, development of a continuous multi-year high-quality AOD dataset is a challenging task. In this work, an initial development of a continuous 20-year (1997-2017) high-quality AOD product is introduced. The development involves (1) incorporation of the available data quality information and delivery of the historical time series of AOD with high quality from four individual instruments, (2) comparison of multiple AOD retrievals to identify potential instrument-related issues and/or retrieval problems, and (3) merging these individual time series, generation of a two-decade continuous climatology of high-quality AOD and reporting of the uncertainty estimations of the merged product.

Paper Details

Date Published: 9 October 2018
PDF: 6 pages
Proc. SPIE 10786, Remote Sensing of Clouds and the Atmosphere XXIII, 107860H (9 October 2018); doi: 10.1117/12.2326690
Show Author Affiliations
Evgueni Kassianov, Pacific Northwest National Lab. (United States)
Justin Monroe, Univ. of Oklahoma (United States)
Laura Riihimaki, Pacific Northwest National Lab. (United States)
Connor Flynn, Pacific Northwest National Lab. (United States)
Erol Cromwell, Pacific Northwest National Lab. (United States)
Gary Hodges, Univ. of Colorado, Boulder (United States)
Allison McComiskey, National Oceanic and Atmospheric Administration (United States)

Published in SPIE Proceedings Vol. 10786:
Remote Sensing of Clouds and the Atmosphere XXIII
Adolfo Comerón; Evgueni I. Kassianov; Klaus Schäfer; Richard H. Picard; Konradin Weber, Editor(s)

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