Articles | Volume 16, issue 1
https://doi.org/10.5194/acp-16-47-2016
https://doi.org/10.5194/acp-16-47-2016
Research article
 | 
14 Jan 2016
Research article |  | 14 Jan 2016

Investigating the frequency and interannual variability in global above-cloud aerosol characteristics with CALIOP and OMI

R. Alfaro-Contreras, J. Zhang, J. R. Campbell, and J. S. Reid

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Cited articles

Ackerman, S. A., Strabala, K. I., Menzel, W. P., Frey, R. A, Moeller, C. C., and Gumley, L. E.: Discriminating clear sky from clouds with MODIS, J. Geophys. Res., 103, 32141–32157, https://doi.org/10.1029/1998JD200032, 1998.
Ackerman, S. A., Holz, R. E., Frey, R. E., Eloranta, R. W., Maddux, B., and McGill, M. J.: Cloud detection with MODIS: Part II. Validation, J. Atmos. Ocean. Tech., 25, 1073–1086, 2008.
Alfaro-Contreras, R., Zhang, J., Reid, J. S., Campbell, J. R., and Holz, R. E.: Evaluating the impact of aerosol particles above cloud on cloud optical depth retrievals from MODIS, J. Geophys. Res.-Atmos., 119, 5410–5423, https://doi.org/10.1002/2013JD021270, 2014.
Campbell, J. R., Tackett, J. L., Reid, J. S., Zhang, J., Curtis, C. A., Hyer, E. J., Sessions, W. R., Westphal, D. L., Prospero, J. M., Welton, E. J., Omar, A. H., Vaughan, M. A., and Winker, D. M.: Evaluating nighttime CALIOP 0.532 µm aerosol optical depth and extinction coefficient retrievals, Atmos. Meas. Tech., 5, 2143–2160, https://doi.org/10.5194/amt-5-2143-2012, 2012.
Campbell, J. R., Vaughan, M. A., Oo, M., Holz, R. E., Lewis, J. R., and Welton, E. J.: Distinguishing cirrus cloud presence in autonomous lidar measurements, Atmos. Meas. Tech., 8, 435–449, https://doi.org/10.5194/amt-8-435-2015, 2015.
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Short summary
The spatial distributions and trends of above-cloud aerosol (ACA) events are studied using seven and a half years of MODIS, OMI, and CALIOP data. The active- (CALIOP) and passive-based (MODIS-OMI) methods have their advantages and caveats, and thus both are used to get a thorough and robust comparison of ACA distribution and climatology. For the first time, baseline above-cloud CALIOP aerosol optical depth and OMI aerosol index thresholds are derived and examined for each sensor.
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