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Surface Matters: Limitations of Calipso V3 Aerosol Typing in Coastal Regions : Volume 7, Issue 2 (11/02/2014)

By Kanitz, T.

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Book Id: WPLBN0004000108
Format Type: PDF Article :
File Size: Pages 33
Reproduction Date: 2015

Title: Surface Matters: Limitations of Calipso V3 Aerosol Typing in Coastal Regions : Volume 7, Issue 2 (11/02/2014)  
Author: Kanitz, T.
Volume: Vol. 7, Issue 2
Language: English
Subject: Science, Atmospheric, Measurement
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2014
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: copernicus

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Kanitz, T., Zamorano, F., Baars, H., Casiccia, C., Wandinger, U., Althausen, D.,...Foth, A. (2014). Surface Matters: Limitations of Calipso V3 Aerosol Typing in Coastal Regions : Volume 7, Issue 2 (11/02/2014). Retrieved from http://www.ebooklibrary.org/


Description
Description: Leibniz Institute for Tropospheric Research, Permoserstr. 15, 04318 Leipzig, Germany. In the CALIPSO data analysis the surface type (land/ocean) is used to augment the aerosol characterization. However, this surface-dependent aerosol typing prohibits a correct classification of sea-breeze-related marine aerosol over land. This might result in a systematic overestimation of the particle extinction coefficient and of the aerosol optical thickness (AOT) of up to a factor of 3.5 over land in coastal areas. We present a long-term comparison of CALIPSO and ground-based lidar observations of the aerosol conditions in the coastal environment of southern Latin America (Punta Arenas, Chile, 53° S), performed in December 2009–April 2010. Punta Arenas is almost entirely influenced by marine particles throughout the year, indicated by a rather low AOT of 0.02–0.04. However, we found an unexpectedly high fraction of continental aerosol in the aerosol types inferred by means of CALIOP observations and, correspondingly, too high particle extinction values. Similar features of the CALIOP data analysis are presented for four other coastal areas around the world. Since CALIOP data serve as important input for global climate models, the influence of this systematic error was estimated by means of simplified radiative-transfer calculations.

Summary
Surface matters: limitations of CALIPSO V3 aerosol typing in coastal regions

Excerpt
Althausen, D., Engelmann, R., Baars, H., Heese, B., Ansmann, A., Müller, D., and Komppula, M.: Portable Raman lidar Polly$^XT$ for automated profiling of aerosol backscatter, extinction, and depolarization, J. Atmos. Ocean. Tech., 26, 2366–2378, doi:10.1175/2009JTECHA1304.1, 2009.; Anderson, G. P., Clough, S. A., Kneizys, F. X., Chetwynd, J. H., and Shettle, E. P.: AFGL atmospheric constituent profiles (0.120 km), available at: http://oai.dtic.mil/oai/oai?verb=getRecord&metadataPrefix=html&identifier=ADA175173 (last access: 7 February 2014), 1986.; Anderson, T. L., Charlson, R. J., Winker, D. M., Ogren, J. A., and Holmén, K.: Mesoscale variations of tropospheric aerosols, J. Atmos. Sci., 60, 119–136, 2.0.CO;2>doi:10.1175/1520-0469(2003)060<0119:MVOTA>2.0.CO;2, 2003.; Ansmann, A., and D. Müller: Lidar and atmospheric aerosol particles, in: Lidar: Range-resolved optical remote sensing of the atmosphere, edited by: Weitkamp, C., Springer, 105–138, 2005.; Bates, T. S., Huebert, B. J., Gras, J. L., Griffiths, F. B., and Durkee, P. A.: International Global Atmospheric Chemistry (IGAC) project's first Aerosol Characterization Experiment (ACE 1): overview, J. Geophys. Res., 103, 16297–16318, doi:10.1029/97JD03741, 1998.; Blanco-Muriel, M., Alarcn-Padilla, D. C., Lpez-Moratalla, T., and Lara-Coira, M.: Computing the solar vector, Sol. Energy, 70, 431–441, doi:10.1016/S0038-092X(00)00156-0, 2001.; Bridhikitti, A.: Atmospheric aerosol layers over Bangkok Metropolitan Region from CALIPSO observations, Atmos. Res., 127, 1–7, doi:10.1016/j.atmosres.2013.02.008, 2013.; Burton, S. P., Ferrare, R. A., Vaughan, M. A., Omar, A. H., Rogers, R. R., Hostetler, C. A., and Hair, J. W.: Aerosol classification from airborne HSRL and comparisons with the CALIPSO vertical feature mask, Atmos. Meas. Tech., 6, 1397–1412, doi:10.5194/amt-6-1397-2013, 2013.; Draxler, R. R. and Rolph, G. D.: HYSPLIT (HYbrid Single-Particle Lagrangian Integrated Trajectory) model access via NOAA ARL READY website, available at: http://www.arl.noaa.gov/ready/hysplit4.html (last access: 7 February 2014), NOAA Air Resources Laboratory, Silver Spring, 2003.; Dubovik, O., Holben, B., Eck, T. F., Smirnov, A., Kaufman, Y. J., King, M. D., Tanré, D., and Slutsker, I.: Variability of absorption and optical properties of key aerosol types observed in worldwide locations, J. Atmos. Sci., 59, 590–608, 2.0.CO;2>doi:10.1175/1520-0469(2002)059<0590:VOAAOP>2.0.CO;2, 2002.; Freudenthaler, V., Esselborn, M., Wiegner, M., Heese, B., Tesche, M., Ansmann, A., Müller, D., Althausen, D., Wirth, M., Fix, A., Ehret, G., Knippertz, P., Toledano, C., Gasteiger, J., Garhammer, M., and Seefeldner, M.: Depolarization ratio profiling at several wavelengths in pure Saharan dust during SAMUM 2006, Tellus B, 61, 165–179, doi:10.1111/j.1600-0889.2008.00396.x, 2009.; Holben, B. N., Eck, T. F., Slutsker, I., Tanre, D., Buis, J. P., Setzer, A., Vermote, E., Reagan, J. A., Kaufman, Y. J., Nakajima, T., Lavenu, F., Jankowiak, I., and Smirnov, A.: AERONET – a federated instrument network and data archive for aerosol characterization, Remote Sens. Environ., 66, 1–16,

 

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