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Kim MH, Omar AH, Tackett JL, Vaughan MA, Winker DM, Trepte CR, Hu Y, Liu Z, Poole LR, Pitts MC, Kar J, Magill BE. The CALIPSO Version 4 Automated Aerosol Classification and Lidar Ratio Selection Algorithm. ATMOSPHERIC MEASUREMENT TECHNIQUES 2018; 11:6107-6135. [PMID: 31921372 DOI: 10.1175/2009jtecha1231.1] [Citation(s) in RCA: 159] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) version 4.10 (V4) level 2 aerosol data products, released in November 2016, include substantial improvements to the aerosol subtyping and lidar ratio selection algorithms. These improvements are described along with resulting changes in aerosol optical depth (AOD). The most fundamental change in V4 level 2 aerosol products is a new algorithm to identify aerosol subtypes in the stratosphere. Four aerosol subtypes are introduced for the stratospheric aerosols: polar stratospheric aerosol (PSA), volcanic ash, sulfate/other, and smoke. The tropospheric aerosol subtyping algorithm was also improved by adding the following enhancements: (1) all aerosol subtypes are now allowed over polar regions, whereas the version 3 (V3) algorithm allowed only clean continental and polluted continental aerosols; (2) a new "dusty marine" aerosol subtype is introduced, representing mixtures of dust and marine aerosols near the ocean surface; and (3) the "polluted continental" and "smoke" subtypes have been renamed "polluted continental/smoke" and "elevated smoke", respectively. V4 also revises the lidar ratios for clean marine, dust, clean continental, and elevated smoke subtypes. As a consequence of the V4 updates, the mean 532 nm AOD retrieved by CALIOP has increased by 0.044 (0.036) or 52 % (40 %) for nighttime (daytime). Lidar ratio revisions are the most influential factor for AOD changes from V3 to V4, especially for cloud-free skies. Preliminary validation studies show that the AOD discrepancies between CALIOP and AERONET/MODIS (ocean) are reduced in V4 compared to V3.
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Affiliation(s)
- Man-Hae Kim
- NASA Postdoctoral Program (USRA), Hampton, VA, USA
| | - Ali H Omar
- NASA Langley Research Center, Hampton, VA, USA
| | | | | | | | | | | | - Zhaoyan Liu
- Science Systems and Applications, Inc., Hampton, VA, USA
| | - Lamont R Poole
- Science Systems and Applications, Inc., Hampton, VA, USA
| | | | - Jayanta Kar
- Science Systems and Applications, Inc., Hampton, VA, USA
| | - Brian E Magill
- Science Systems and Applications, Inc., Hampton, VA, USA
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Nee JB, Chiang CW, Hu HL, Hu SX, Yu JY. Lidar measurements of Asian dust storms and dust cloud interactions. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2007jd008476] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Mattis I, Ansmann A, Müller D, Wandinger U, Althausen D. Multiyear aerosol observations with dual-wavelength Raman lidar in the framework of EARLINET. ACTA ACUST UNITED AC 2004. [DOI: 10.1029/2004jd004600] [Citation(s) in RCA: 121] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ina Mattis
- Leibniz Institute for Tropospheric Research; Leipzig Germany
| | - Albert Ansmann
- Leibniz Institute for Tropospheric Research; Leipzig Germany
| | - Detlef Müller
- Leibniz Institute for Tropospheric Research; Leipzig Germany
| | - Ulla Wandinger
- Leibniz Institute for Tropospheric Research; Leipzig Germany
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Ansmann A, Bösenberg J, Chaikovsky A, Comerón A, Eckhardt S, Eixmann R, Freudenthaler V, Ginoux P, Komguem L, Linné H, Márquez MÁL, Matthias V, Mattis I, Mitev V, Müller D, Music S, Nickovic S, Pelon J, Sauvage L, Sobolewsky P, Srivastava MK, Stohl A, Torres O, Vaughan G, Wandinger U, Wiegner M. Long-range transport of Saharan dust to northern Europe: The 11-16 October 2001 outbreak observed with EARLINET. ACTA ACUST UNITED AC 2003. [DOI: 10.1029/2003jd003757] [Citation(s) in RCA: 196] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Albert Ansmann
- Leibniz-Institut für Troposphärenforschung; Leipzig Germany
| | | | - Anatoli Chaikovsky
- Institute of Physics; National Academy of Sciences of Belarus; Minsk Belarus
| | | | - Sabine Eckhardt
- Technische Universität München; Freising-Weihenstephan Germany
| | - Ronald Eixmann
- Leibniz-Institut für Atmosphärenphysik; Kühlungsborn Germany
| | | | - Paul Ginoux
- Geophysical Fluid Dynamics Laboratory, NOAA; Princeton New Jersey USA
| | - Leonce Komguem
- Physics Department; University of Wales; Aberystwyth United Kingdom
| | - Holger Linné
- Max-Planck-Institut für Meteorologie; Hamburg Germany
| | | | | | - Ina Mattis
- Leibniz-Institut für Troposphärenforschung; Leipzig Germany
| | | | - Detlef Müller
- Leibniz-Institut für Troposphärenforschung; Leipzig Germany
| | - Svetlana Music
- Euro-Mediterranean Center on Insular Coastal Dynamics; University of Malta; Valletta Malta
| | - Slobodan Nickovic
- Euro-Mediterranean Center on Insular Coastal Dynamics; University of Malta; Valletta Malta
| | - Jacques Pelon
- Service d'Aéronomie du CNRS; Université Pierre et Marie Curie; Paris France
| | - Laurent Sauvage
- Institute Pierre Simon Laplace; Laboratoire de la Météorologie Dynamique; Palaiseau France
| | - Piotr Sobolewsky
- Institute of Geophysics, Polish Academy of Sciences; Warsaw Poland
| | | | - Andreas Stohl
- Technische Universität München; Freising-Weihenstephan Germany
| | - Omar Torres
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
| | - Geraint Vaughan
- Physics Department; University of Wales; Aberystwyth United Kingdom
| | - Ulla Wandinger
- Leibniz-Institut für Troposphärenforschung; Leipzig Germany
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Murayama T. An intercomparison of lidar-derived aerosol optical properties with airborne measurements near Tokyo during ACE-Asia. ACTA ACUST UNITED AC 2003. [DOI: 10.1029/2002jd003259] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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