Combined retrievals of boreal forest fire aerosol properties with a polarimeter and lidar

Atmospheric Chemistry and Physics

Volumn 11, Issue 14, 2011, Pages 7045-7067

  Knobelspiesse, K ^a   Cairns, B ^a   Ottaviani, M ^a   Ferrare, R ^b   Hair, J ^b   Hostetler, C ^b   Obland, M ^b   Rogers, R ^b   Redemann, J ^c,d   Shinozuka, Y ^d   Clarke, A ^e   Freitag, S ^e   Howell, S ^e   Kapustin, V ^e   McNaughton, C ^e  

^a NASA GODDARD INSTITUTE FOR SPACE STUDIES   (United States)

^b NASA LANGLEY RESEARCH CENTER   (United States)

^c BAY AREA ENVIRONMENTAL RESEARCH INSTITUTE   (United States)

^d NASA AMES RESEARCH CENTER   (United States)

^e UNIVERSITY OF HAWAII   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ABSORPTION; AEROSOL PROPERTY; ALGORITHM; BOREAL FOREST; ESTIMATION METHOD; FOREST FIRE; GLOBAL CLIMATE; LIDAR; OPTICAL DEPTH; OPTIMIZATION; PHOTOMETER; SENSOR; SIZE DISTRIBUTION; TROPOSPHERE; VERTICAL DISTRIBUTION;

EID: 79960584105     PISSN: 16807316     EISSN: 16807324     Source Type: Journal    
DOI: 10.5194/acp-11-7045-2011     Document Type: Article

References (80)

1. Abel, S., Haywood, J., Highwood, E., Li, J., and Buseck, P.: Evolution of biomass burning aerosol properties from an agricultural fire in southern Africa., Geophys. Res. Lett., 30, 1783-1787, 2003.
2. Andreae, M. O. and Gelencsér, A.: Black carbon or brown carbon? The nature of light-absorbing carbonaceous aerosols, At-mos. Chem. Phys., 6, 3131-3148, doi:10.5194/acp-6-3131-2006, 2006. (Pubitemid 44154660)
3. Bergstrom, R. W., Schmidt, K. S., Coddington, O., Pilewskie, P., Guan, H., Livingston, J. M., Redemann, J., and Russell, P. B.: Aerosol spectral absorption in the Mexico City area: results from airborne measurements during MILAGRO/INTEX B, At-mos. Chem. Phys., 10, 6333-6343, doi:10.5194/acp-10-6333- 2010, 2010.
4. Breon, F., Tanre, D., Lecomte, P., and Herman, M.: Polarized reflectance of bare soils and vegetation: measurementsand models, IEEE T. Geosci. Remote, 33, 487-499, 1995.
5. Cairns, B.: Polarimetric Remote Sensing of Aerosols, IEEE T. Geosci. Remote, 1, 518-520, 2003.
6. Cairns, B., Carlson, B., Lacis, A., and Russell, E.: Analysis of ground-based polarimetric sky radiance measurements, Proc. SPIE, 3121, 382-393, 1997. (Pubitemid 35010520)
7. Canada: Forest Fire Conditions for June 20 to June 30, 2008, http://cwfis.cfs.nrcan.gc.ca/en CA/, last access: 18 July 2011, Canadian Wildland Fire Information System (CWFIS), 2009.
8. Chowdhary, J., Cairns, B., Mishchenko, M., and Travis, L.: Retrieval of aerosol properties over the ocean using multispectral and multiangle photopolarimetric measurements from the Research Scanning Polarimeter, Geophys. Res. Lett., 28, 243-246, 2001.
9. Chowdhary, J., Cairns, B., and Travis, L.: Case Studies of Aerosol Retrievals over the Ocean from Multiangle, Multispectral Pho-topolarimetric Remote Sensing Data, J. Atmos. Sci., 59, 383-397, 2002. (Pubitemid 34838314)
10. Chowdhary, J., Cairns, B., Mishchenko, M., Hobbs, P., Cota, G., Redemann, J., Rutledge, K., Holben, B., and Russell, E.: Retrieval of Aerosol Scattering and Absorption Properties from Photopolarimetric Observations over the Ocean during the CLAMS Experiment, J. Atmos. Sci., 62, 1093-1117, 2005a. (Pubitemid 40659716)
11. Chowdhary, J., Cairns, B., Mishchenko, M., and Travis, L.: Using multi-angle multispectral photo-polarimetry of the NASA Glory mission to constrain optical properties of aerosols and clouds: results from four field experiments, Proc. SPIE, 5978, 1-12, 2005b.
12. Clarke, A., Varner, J., Eisele, F., Mauldin, R., Tanner, D., and Litchy, M.: Particle production in the remote marine atmosphere: Cloud outflow and subsidence during ACE 1, J. Geophys. Res.-Atmos., 103, 16397-16409, 1998.
13. Clarke, A., McNaughton, C., Kapustin, V., Shinozuka, Y., Howell, S., Dibb, J., Zhou, J., Anderson, B., Brekhovskikh, V., Turner, H., and Pinkerton, M.: Biomass burning and pollution aerosol over North America: Organic components and their influence on spectral optical properties and humidification response, J. Geo-phys. Res., 112, 1-13, 2007.
14. De Haan, J., Bosma, P., and Hovenier, J.: The adding method for multiple scattering calculations of polarized light, Astron. Astro-phys., 183, 371-391, 1987.
15. Dubovik, O., Holben, B., Eck, T., Smirnov, A., Kaufman, Y., King, M., 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, 2002. (Pubitemid 34838293)
16. Duforêt, L., Frouin, R., and Dubuisson, P.: Importance and estimation of aerosol vertical structure in satellite ocean-color remote sensing, Appl. Optics, 46, 1107-1119, 2007. (Pubitemid 46516005)
17. Dusek, U., Frank, G., Hildebrandt, L., Curtius, J., Schneider, J., Walter, S., Chand, D., Drewnick, F., Hings, S., Jung, D., Bor-rmann, S., and Andreae, M.: Size matters more than chemistry for cloud-nucleating ability of aerosol particles, Science, 312, 1375-1378, 2006. (Pubitemid 43839548)
18. Eck, T., Holben, B., Reid, J., O'Neill, N., Schafer, J., Dubovik, O., Smirnov, A., Yamasoe, M., and Artaxo, P.: High aerosol optical depth biomass burning events: A comparison of optical properties for different source regions, Geophys. Res. Lett., 30, 2035-2039, 2003.
19. Eck, T., Holben, B., Reid, J., Sinyuk, A., Hyer, E., O'Neill, N., Shaw, G., Castle, J., Chapin, F., Dubovik, O., Smirnov, A., Ver-mote, E., Schafer, J., Giles, D., Slutsker, I., Sorokine, M., and Newcomb, W.: Optical properties of boreal region biomass burning aerosols in central Alaska and seasonal variation of aerosol optical depth at an Arctic coastal site, J. Geophys. Res., 114, 1-14, 2009.
20. Elias, T., Cairns, B., and Chowdhary, J.: Surface optical properties measured by the airborne research scanning polarimeter during the CLAMS experiment, in: Remote Sensing of Clouds and the Atmosphere VIII, edited by: Schaefer, K., Comeron, A., Carleer, M. R. and Picard, R. H., Proc. SPIE, 5235, 595-606, 2004.
21. Fletcher, R.: A Modified Marquardt Subroutine for Non-Linear Least Squares, Tech. rep., United Kingdom Atomic Energy Authority, Theoretical Physics Division, Atomic Energy Research Establishment, Harwell, Berkshire, UK, 1971.
22. Fuelberg, H. E., Harrigan, D. L., and Sessions, W.: A meteorological overview of the ARCTAS 2008 mission, Atmos. Chem. Phys., 10, 817-842, doi:10.5194/acp-10-817-2010, 2010.
23. Gatebe, C., King, M., Tsay, S., Ji, Q., Arnold, G., and Li, J.: Sensitivity of off-nadir zenith angles to correlation between visible and near-infrared reflectance for use in remote sensing of aerosol over land, IEEE T. Geosci. Remote, 39, 805-819, 2001. (Pubitemid 32432736)
24. Grant, L.: Diffuse and specular characteristics of leaf reflectance, Remote Sens. Environ., 22, 309-322, 1987. (Pubitemid 17599347)
25. Guanter, L., Gómez-Chova, L., and Moreno, J.: Coupled retrieval of aerosol optical thickness, columnar water vapor and surface reflectance maps from ENVISAT/MERIS data over land, Remote Sens. Environ., 112, 2898-2913, 2008.
26. Hair, J. W., Caldwell, L. M., Krueger, D. A., and She, C.-Y.: High-Spectral-Resolution Lidar with Iodine-Vapor Filters: Measurement of Atmospheric-State and Aerosol Profiles, Appl. Optics, 40, 5280-5294, 2001.
27. Hair, J. W., Hostetler, C. A., Cook, A. L., Harper, D. B., Ferrare, R. A., Mack, T. L., Welch, W., Izquierdo, L. R., and Hovis, F. E.: Airborne High Spectral Resolution Lidar for profiling aerosol optical properties, Appl. Optics, 47, 6734-6752, 2008.
28. Hansen, J. and Hovenier, J.: Interpretation of the Polarization of Venus, J. Atmos. Sci., 31, 1137-1160, 1974.
29. Hansen, J. and Travis, L.: Light scattering in planetary atmospheres, Space Sci. Rev., 16, 527-610, 1974.
30. Hasekamp, O. P.: Capability of multi-viewing-angle photo-polarimetric measurements for the simultaneous retrieval of aerosol and cloud properties, Atmos. Meas. Tech., 3, 839-851, doi:10.5194/amt-3-839-2010, 2010.
31. Hasekamp, O. and Landgraf, J.: Retrieval of aerosol properties over land surfaces: capabilities of multiple-viewing-angle intensity and polarization measurements, Appl. Optics, 46, 3332-3344, 2007.
32. Hebden, M.: An Algorithm for Minimization Using Exact Second Derivatives, Tech. Rep. TP515, Atomic Energy Research Establishment, Harwell, England, 1973.
33. Hsu, N., Tsay, S., King, M., and Herman, J.: Deep blue retrievals of Asian aerosol properties during ACE-Asia, IEEE T. Geosci. Remote, 44, 3180-3195, 2006. (Pubitemid 44711661)
34. IPCC: Climate Change 2007-The Physical Science Basis : Contribution of the Working Group I to the Fourth Assessment Report of the IPCC, Cambridge University Press, New York, NY, 2007.
35. Jacob, D. J., Crawford, J. H., Maring, H., Clarke, A. D., Dibb, J. E., Emmons, L. K., Ferrare, R. A., Hostetler, C. A., Russell, P. B., Singh, H. B., Thompson, A. M., Shaw, G. E., McCauley, E., Ped-erson, J. R., and Fisher, J. A.: The Arctic Research of the Composition of the Troposphere from Aircraft and Satellites (ARC-TAS) mission: design, execution, and first results, Atmos. Chem. Phys., 10, 5191-5212, doi:10.5194/acp-10-5191-2010, 2010.
36. Kaufman, Y., Wald, A., Remer, L., Gao, B., Li, R., and Flynn, L.: The MODIS 2.1-μ m channel-correlation with visible reflectance-for use in remote sensing of aerosol, IEEE T. Geosci. Remote, 35, 1286-1298, 1997.
37. Kawata, Y.: Circular polarization of sunlight reflected by planetary atmospheres, Icarus, 33, 217-232, 1978.
38. Kirchstetter, T., Novakov, T., and Hobbs, P.: Evidence that the spectral dependence of light absorption by aerosols is affected by organic carbon, J. Geophys. Res.-Atmos., 109, 1-12, 2004.
39. Knobelspiesse, K., Pietras, C., Fargion, G., Wang, M., Frouin, R., Miller, M., Subramaniam, A., and Balch, W.: Maritime aerosol optical thickness measured by handheld sun photometers, Remote Sens. Environ., 93, 87-106, 2004. (Pubitemid 39234713)
40. Knobelspiesse, K., Cairns, B., Schaaf, C., Schmid, B., and Román, M.: Surface BRDF estimation from an aircraft compared to MODIS and ground estimates at the Southern Great Plains site, J. Geophys. Res., 113, 1-21, 2008.
41. Koppmann, R., von Czapiewski, K., and Reid, J. S.: A review of biomass burning emissions, part I: gaseous emissions of carbon monoxide, methane, volatile organic compounds, and nitrogen containing compounds, Atmos. Chem. Phys. Discuss., 5, 10455-10516, doi:10.5194/acpd-5-10455-2005, 2005.
42. Lebsock, M., L'Ecuyer, T., and Stephens, G.: Information content of near-infrared spaceborne multiangular polarization measurements for aerosol retrievals, J. Geophys. Res., 112, 1-14, 2007.
43. Lewis, K., Arnott, W. P., Moosmuller, H., and Wold, C. E.: Strong spectral variation of biomass smoke light absorption and single scattering albedo observed with a novel dual-wavelength photoacoustic instrument, J. Geophys. Res., 113, D16203, doi:10.1029/2007JD009699, 2008.
44. Liu, L., Mishchenko, M., and Patrick Arnott, W.: A study of radiative properties of fractal soot aggregates using the superposition T-matrix method, J. Quant. Spectrosc. Ra., 109, 2656-2663, 2008.
45. Livingston, J. M., Redemann, J., Russell, P. B., Torres, O., Vei-helmann, B., Veefkind, P., Braak, R., Smirnov, A., Remer, L., Bergstrom, R. W., Coddington, O., Schmidt, K. S., Pilewskie, P., Johnson, R., and Zhang, Q.: Comparison of aerosol optical depths from the Ozone Monitoring Instrument (OMI) on Aura with results from airborne sunphotometry, other space and ground measurements during MILAGRO/INTEX-B, At-mos. Chem. Phys., 9, 6743-6765, doi:10.5194/acp-9-6743-2009, 2009.
46. Lucht, W., Schaaf, C., and Strahler, A.: An algorithm for the retrieval of albedo from space using semiempirical BRDF models, IEEE T. Geosci. Remote, 38, 977-998, 2000. (Pubitemid 30594778)
47. Markwardt, C.: Non-linear Least Squares Fitting in IDL with MP-FIT, Astronomical Society of the Pacific Conference Series, 411, 251-254, 2009.
48. Martins, J., Hobbs, P., Weiss, R., and Artaxo, P.: Sphericity and morphology of smoke particles from biomass burning in Brazil, J. Geophys. Res.-Atmos., 103, 32051-32057, 1998. (Pubitemid 128665621)
49. McNaughton, C., Clarke, A., Howell, S., Pinkerton, M., Anderson, B., Thornhill, L., Hudgins, C., Winstead, E., Dibb, J., Scheuer, E., and Maring, H.: Results from the DC-8 inlet characterization experiment (DICE): Airborne versus surface sampling of mineral dust and sea salt aerosols, Aerosol Sci. Tech., 41, 136-159, 2007. (Pubitemid 46277576)
50. McNaughton, C. S., Clarke, A. D., Kapustin, V., Shinozuka, Y., Howell, S. G., Anderson, B. E., Winstead, E., Dibb, J., Scheuer, E., Cohen, R. C., Wooldridge, P., Perring, A., Huey, L. G., Kim, S., Jimenez, J. L., Dunlea, E. J., DeCarlo, P. F., Wennberg, P. O., Crounse, J. D., Weinheimer, A. J., and Flocke, F.: Observations of heterogeneous reactions between Asian pollution and mineral dust over the Eastern North Pacific during INTEX-B, At-mos. Chem. Phys., 9, 8283-8308, doi:10.5194/acp-9-8283-2009, 2009.
51. Mishchenko, M. and Travis, L.: Gustav Mie and the evolving discipline of electromagnetic scattering by particles, B. Am. Mete-orol. Soc., 89, 1853-1861, 2008.
52. Mishchenko, M., Cairns, B., Hansen, J., Travis, L., Burg, R., Kaufman, Y., Vanderlei Martins, J., and Shettle, E.: Monitoring of aerosol forcing of climate from space: analysis of measurement requirements, J. Quant. Spectrosc. Ra., 88, 149-161, 2004. (Pubitemid 39168876)
53. Mishchenko, M., Cairns, B., Kopp, G., Schueler, C., Fafaul, B., Hansen, J., Hooker, R., Itchkawich, T., Maring, H., and Travis, L.: Accurate monitoring of terrestrial aerosols and total solar ir-radiance: introducing the Glory mission, B. Am. Meteorol. Soc., 88, 687-691, 2007a.
54. Mishchenko, M., Geogdzhayev, I., Cairns, B., Carlson, B., Chowd-hary, J., Lacis, A., Liu, L., Rossow, W., and Travis, L.: Past, present, and future of global aerosol climatologies derived from satellite observations: A perspective, J. Quant. Spectrosc. Ra., 106, 325-347, 2007b. (Pubitemid 46656900)
55. Moré, J.: The Levenberg-Marquardt Algorithm: Implementation and Theory, in: Lecture Notes in Mathematics: Numerical Analysis, edited by: Watson, G. A., Proceedings of the Biennial Conference Held at Dundee, Springer-Verlag, Berlin, vol. 630, 105-116, 1977.
56. Moré, J. J., Garbow, B. S., and Hillstrom, K. E.: User Guide for MINPACK-1, Argonne National Laboratory Report ANL-80-74, Argonne, Ill., 1980.
57. Müller, D., Mattis, I., Wandinger, U., Ansmann, A., Althausen, D., and Stohl, A.: Raman lidar observations of aged Siberian and Canadian forest fire smoke in the free troposphere over Germany in 2003: Microphysical particle characterization, J. Geophys. Res., 110, 17201, 2005.
58. Müller, D., Mattis, I., Ansmann, A., Wandinger, U., Ritter, C., and Kaiser, D.: Multiwavelength Raman lidar observations of particle growth during long-range transport of forest-fire smoke in the free troposphere, Geophys. Res. Lett., 34, 1-4, 2007.
59. Nadal, F. and Breon, F.-M.: Parameterization of Surface Polarized Reflectance Derived from POLDER Spaceborne Measurements, IEEE T. Geosci. Remote, 37, 1709, 1999.
60. O'Neill, N., Ignatov, A., Holben, B., and Eck, T.: The lognor-mal distribution as a reference for reporting aerosol optical depth statistics: Empirical tests using multi-year, multi-site AERONET sunphotometer data, Geophys. Res. Lett., 27, 3333-3336, 2000. (Pubitemid 32043156)
61. Redemann, J., Schmid, B., Eilers, J., Kahn, R., Levy, R., Russell, P., Livingston, J., Hobbs, P., Smith, W., and Holben, B.: Suborbital measurements of spectral aerosol optical depth and its variability at subsatellite grid scales in support of CLAMS 2001, J. Atmos. Sci., 62, 993-1007, 2005. (Pubitemid 40659711)
62. Reid, J. and Hobbs, P.: Physical and optical properties of young smoke from individual biomass fires in Brazil, J. Geophys. Res.-Atmos., 103, 32013-32030, 1998. (Pubitemid 128665618)
63. Reid, J., Hobbs, P., Ferek, R., Blake, D., Martins, J., Dunlap, M., and Liousse, C.: Physical, chemical, and optical properties of regional hazes dominated by smoke in Brazil, J. Geophys. Res.-Atmos., 103, 32059-32080, 1998. (Pubitemid 128665622)
64. Reid, J. S., Eck, T. F., Christopher, S. A., Koppmann, R., Dubovik, O., Eleuterio, D. P., Holben, B. N., Reid, E. A., and Zhang, J.: A review of biomass burning emissions part III: intensive optical properties of biomass burning particles, Atmos. Chem. Phys., 5, 827-849, doi:10.5194/acp-5-827-2005, 2005a. (Pubitemid 40479143)
65. Reid, J. S., Koppmann, R., Eck, T. F., and Eleuterio, D. P.: A review of biomass burning emissions part II: intensive physical properties of biomass burning particles, Atmos. Chem. Phys., 5, 799-825, doi:10.5194/acp-5-799-2005, 2005b. (Pubitemid 40479142)
66. Remer, L., Wald, A., and Kaufman, Y.: Angular and seasonal variation of spectral surface reflectanceratios: implications for the remote sensing of aerosol over land, IEEE T. Geosci. Remote, 39, 275-283, 2001. (Pubitemid 32270991)
67. Rodgers, C.: Inverse Methods for Atmospheric Sounding: Theory and Practice, World Scientific, Singapore, 2000.
68. Rogers, R. R., Hair, J. W., Hostetler, C. A., Ferrare, R. A., Obland, M. D., Cook, A. L., Harper, D. B., Burton, S. P., Shinozuka, Y., McNaughton, C. S., Clarke, A. D., Redemann, J., Russell, P. B., Livingston, J. M., and Kleinman, L. I.: NASA LaRC airborne high spectral resolution lidar aerosol measurements during MI-LAGRO: observations and validation, Atmos. Chem. Phys., 9, 4811-4826, doi:10.5194/acp-9-4811-2009, 2009.
69. Russell, P., Livingston, J., Hignett, P., Kinne, S., Wong, J., Chien, A., Bergstrom, R., Durkee, P., and Hobbs, P.: Aerosol-induced radiative flux changes off the United States mid-Atlantic coast: Comparison of values calculated from sunphotometer and in situ data with those measured by airborne pyranometer, J. Geophys. Res.-Atmos., 104, 2289-2307, 1999. (Pubitemid 29243402)
70. Russell, P. B., Bergstrom, R. W., Shinozuka, Y., Clarke, A. D., De-Carlo, P. F., Jimenez, J. L., Livingston, J. M., Redemann, J., Dubovik, O., and Strawa, A.: Absorption Angstrom Exponent in AERONET and related data as an indicator of aerosol composition, Atmos. Chem. Phys., 10, 1155-1169, doi:10.5194/acp-10-1155-2010, 2010.
71. Schmid, B., Redemann, J.,Russell, P. B., Hobbs, P. V., Hlavka, D. L., McGill, M. J., Holben, B. N., Welton, E. J., Campbell, J. R., Torres, O., Kahn, R. A., Diner, D. J., Helmlinger, M. C., Chu, D.A., Robles-Gonzalez, C., and de Leeuw, G.: Coordinated air borne, spaceborne, and ground-based measurements of massive, thick aerosol layers during the dry season in Southern Africa, J. Geophys. Res, 108, 8496, 2003.
72. Schmid, B., Ferrare, R., Flynn, C., Elleman, R., Covert, D., Strawa, A., Welton, E., Turner, D., Jonsson, H., Redemann, J., Eil-ers, J., Ricci, K., Hallar, A. G., Clayton, M., Michalsky, J., Smirnov, A., Holben, B., and Barnard, J.: How well do state-of-the-art techniques measuring the vertical profile of tropospheric aerosol extinction compare, J. Geophys. Res., 111, D05207, doi:10.1029/2005JD005837, 2006.
73. Shinozuka, Y., Redemann, J., Livingston, J. M., Russell, P. B., Clarke, A. D., Howell, S. G., Freitag, S., O'Neill, N. T., Reid, E. A., Johnson, R., Ramachandran, S., McNaughton, C. S., Ka-pustin, V. N., Brekhovskikh, V., Holben, B. N., and McArthur, L. J. B.: Airborne observation of aerosol optical depth during ARC-TAS: vertical profiles, inter-comparison and fine-mode fraction, Atmos. Chem. Phys., 11, 3673-3688, doi:10.5194/acp-11-3673-2011, 2011.
74. Vanderbilt, V. and Grant, L.: Photon-vegetation interactions: applications in optical remote sensing and plant ecology, chap. Polarization of Light by Vegetation, Springer-Verlag, Berlin, New York, 194-228, 1991.
75. Vanderbilt, V., Grant, L., Biehl, L. L., and Robinson, B. F.: Specular, diffuse, and polarized light scattered by two wheat canopies, Appl. Optics, 24, 2408-2418, 1985.
76. Virkkula, A., Ahlquist, N., Covert, D., Arnott, W., Sheridan, P., Quinn, P., and Coffman, D.: Modification, calibration and a field test of an instrument for measuring light absorption by particles, Aerosol Sci. Tech., 39, 68-83, 2005. (Pubitemid 40095663)
77. Waquet, F., Cairns, B., Knobelspiesse, K., Chowdhary, J., Travis, L., Schmid, B., and Mishchenko, M.: Polarimetric remote sensing of aerosols over land, J. Geophys. Res., 114, D01206, doi:10.1029/2008JD010619, 2009.
78. Winker, D., Pelon, J., and McCormick, M.: The CALIPSO mission: Spaceborne lidar for observation of aerosols and clouds, Int. Soc. Opt. Eng., 4893, 1-11, 2003.
79. Winker, D., Hunt, W., and Hostetler, C.: Status and performance of the CALIOP lidar, Int. Soc. Opt. Eng., 5575, 8-15, 2004. (Pubitemid 40565148)
80. Winker, D., Hunt, W., and McGill, M.: Initial performance assessment of CALIOP, Geophys. Res. Lett., 34, 19, 2007.