{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,17]],"date-time":"2026-03-17T22:54:10Z","timestamp":1773788050061,"version":"3.50.1"},"reference-count":63,"publisher":"Copernicus GmbH","issue":"4","license":[{"start":{"date-parts":[[2016,2,29]],"date-time":"2016-02-29T00:00:00Z","timestamp":1456704000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Atmos. Chem. Phys."],"abstract":"<jats:p>Abstract. The CALIPSO Level 3 (CL3) product is the most recent data set produced by the observations of the Cloud\u2013Aerosol Lidar with Orthogonal Polarization (CALIOP) instrument onboard the Cloud\u2013Aerosol Lidar and Pathfinder Satellite Observations (CALIPSO) space platform. The European Aerosol Research Lidar Network (EARLINET), based mainly on multi-wavelength Raman lidar systems, is the most appropriate ground-based reference for CALIPSO calibration\/validation studies on a\u00a0continental scale. In this work, CALIPSO data are compared against EARLINET monthly averaged profiles obtained by measurements performed during CALIPSO overpasses. In order to mitigate uncertainties due to spatial and temporal differences, we reproduce a\u00a0modified version of CL3 data starting from CALIPSO Level 2 (CL2) data. The spatial resolution is finer and nearly 2\u00b0\u202f\u2009\u00d7\u2009\u202f2\u00b0 (latitude\u202f\u2009\u00d7\u2009\u202flongitude) and only simultaneous measurements are used for ease of comparison. The CALIPSO monthly mean profiles following this approach are called CALIPSO Level 3*, CL3*. We find good agreement on the aerosol extinction coefficient, yet in most of the cases a\u00a0small CALIPSO underestimation is observed with an average bias of 0.02 km\u22121 up to 4 km and 0.003 km\u22121 higher above. In contrast to CL3 standard product, the CL3* data set offers the possibility to assess the CALIPSO performance also in terms of the particle backscatter coefficient keeping the same quality assurance criteria applied to extinction profiles. The mean relative difference in the comparison improved from 25 % for extinction to 18 % for backscatter, showing better performances of CALIPSO backscatter retrievals. Additionally, the aerosol typing comparison yielded a\u00a0robust identification of dust and polluted dust. Moreover, the CALIPSO aerosol-type-dependent lidar ratio selection is assessed by means of EARLINET observations, so as to investigate the performance of the extinction retrievals. The aerosol types of dust, polluted dust, and clean continental showed noticeable discrepancy. Finally, the potential improvements of the lidar ratio assignment have been examined by adjusting it according to EARLINET-derived values.<\/jats:p>","DOI":"10.5194\/acp-16-2341-2016","type":"journal-article","created":{"date-parts":[[2016,2,29]],"date-time":"2016-02-29T03:16:01Z","timestamp":1456715761000},"page":"2341-2357","source":"Crossref","is-referenced-by-count":69,"title":["CALIPSO climatological products: evaluation and suggestions from EARLINET"],"prefix":"10.5194","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7702-0710","authenticated-orcid":false,"given":"Nikolaos","family":"Papagiannopoulos","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4157-0838","authenticated-orcid":false,"given":"Lucia","family":"Mona","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3576-7167","authenticated-orcid":false,"given":"Lucas","family":"Alados-Arboledas","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1544-7812","authenticated-orcid":false,"given":"Vassilis","family":"Amiridis","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2316-8960","authenticated-orcid":false,"given":"Holger","family":"Baars","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0065-9791","authenticated-orcid":false,"given":"Ioannis","family":"Binietoglou","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2334-4055","authenticated-orcid":false,"given":"Daniele","family":"Bortoli","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6627-2517","authenticated-orcid":false,"given":"Giuseppe","family":"D'Amico","sequence":"additional","affiliation":[]},{"given":"Aldo","family":"Giunta","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8317-2304","authenticated-orcid":false,"given":"Juan Luis","family":"Guerrero-Rascado","sequence":"additional","affiliation":[]},{"given":"Anja","family":"Schwarz","sequence":"additional","affiliation":[]},{"given":"Sergio","family":"Pereira","sequence":"additional","affiliation":[]},{"given":"Nicola","family":"Spinelli","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3676-9121","authenticated-orcid":false,"given":"Ulla","family":"Wandinger","sequence":"additional","affiliation":[]},{"given":"Xuan","family":"Wang","sequence":"additional","affiliation":[]},{"given":"Gelsomina","family":"Pappalardo","sequence":"additional","affiliation":[]}],"member":"3145","published-online":{"date-parts":[[2016,2,29]]},"reference":[{"key":"ref1","doi-asserted-by":"crossref","unstructured":"Alados-Arboledas,\u00a0L., Alados,\u00a0I., Foyo-Moreno,\u00a0I., Olmo,\u00a0F., and\nAlc\u00e1ntara,\u00a0A.: The influence of clouds on surface UV erythemal\nirradiance, Atmos. Res., 66, 273\u2013290, 2003.","DOI":"10.1016\/S0169-8095(03)00027-9"},{"key":"ref2","doi-asserted-by":"crossref","unstructured":"Amiridis,\u00a0V., Giannakaki,\u00a0E., Balis,\u00a0D., Gerasopoulos,\u00a0E., Pytharoulis,\u00a0I.,\nZanis,\u00a0P., Kazadzis,\u00a0S., Melas,\u00a0D., and Zerefos,\u00a0C.: Smoke injection\nheights from agricultural burning in Eastern Europe as seen by CALIPSO, Atmos.\nChem. Phys., 10, 11567\u201311576,\nhttps:\/\/doi.org\/10.5194\/acp-10-11567-2010,\n2010.","DOI":"10.5194\/acp-10-11567-2010"},{"key":"ref3","doi-asserted-by":"crossref","unstructured":"Amiridis,\u00a0V., Wandinger,\u00a0U., Marinou,\u00a0E., Giannakaki,\u00a0E., Tsekeri,\u00a0A.,\nBasart,\u00a0S., Kazadzis,\u00a0S., Gkikas,\u00a0A., Taylor,\u00a0M., Baldasano,\u00a0J., and\nAnsmann,\u00a0A.: Optimizing CALIPSO Saharan dust retrievals, Atmos. Chem. Phys.,\n13, 12089\u201312106,\nhttps:\/\/doi.org\/10.5194\/acp-13-12089-2013,\n2013.","DOI":"10.5194\/acp-13-12089-2013"},{"key":"ref4","doi-asserted-by":"crossref","unstructured":"Amiridis,\u00a0V., Marinou,\u00a0E., Tsekeri,\u00a0A., Wandinger,\u00a0U., Schwarz,\u00a0A.,\nGiannakaki,\u00a0E., Mamouri,\u00a0R., Kokkalis,\u00a0P., Binietoglou,\u00a0I., Solomos,\u00a0S.,\nHerekakis,\u00a0T., Kazadzis,\u00a0S., Gerasopoulos,\u00a0E., Proestakis,\u00a0E., Kottas,\u00a0M.,\nBalis,\u00a0D., Papayannis,\u00a0A., Kontoes,\u00a0C., Kourtidis,\u00a0K., Papagiannopoulos,\u00a0N.,\nMona,\u00a0L., Pappalardo,\u00a0G., Le\u00a0Rille,\u00a0O., and Ansmann,\u00a0A.: LIVAS: a 3-D\nmulti-wavelength aerosol\/cloud database based on CALIPSO and EARLINET, Atmos.\nChem. Phys., 15, 7127\u20137153,\nhttps:\/\/doi.org\/10.5194\/acp-15-7127-2015,\n2015.","DOI":"10.5194\/acp-15-7127-2015"},{"key":"ref5","doi-asserted-by":"crossref","unstructured":"Balis,\u00a0D.\u00a0S., Amiridis,\u00a0V., Zerefos,\u00a0C., Kazantzidis,\u00a0A., Kazadzis,\u00a0S.,\nBais,\u00a0A.\u00a0F., Meleti,\u00a0C., Gerasopoulos,\u00a0E., Papayannis,\u00a0A., Matthias,\u00a0V.,\nDier,\u00a0H., and Andreae,\u00a0M.\u00a0O.: Study of the effect of different type of\naerosols on UV-B radiation from measurements during EARLINET, Atmos. Chem.\nPhys., 4, 307\u2013321,\nhttps:\/\/doi.org\/10.5194\/acp-4-307-2004,\n2004.","DOI":"10.5194\/acp-4-307-2004"},{"key":"ref6","doi-asserted-by":"crossref","unstructured":"B\u00f6ckmann,\u00a0C., Wandinger,\u00a0U., Ansmann,\u00a0A., B\u00f6senberg,\u00a0J.,\nAmiridis,\u00a0V., Boselli,\u00a0A., Delaval,\u00a0A., De\u00a0Tomasi,\u00a0F., Frioud,\u00a0M.,\nGrigorov,\u00a0I., H\u00e5g\u00e5rd,\u00a0A., Horvat,\u00a0M., Iarlori,\u00a0M., Komguem,\u00a0L.,\nKreipl,\u00a0S., Larchev\u00eaque,\u00a0G., Matthias,\u00a0V., Papayannis,\u00a0A.,\nPappalardo,\u00a0G., Rocadenbosch,\u00a0F., Rodrigues,\u00a0J., Schneider,\u00a0J.,\nShcherbakov,\u00a0V., and Wiegner,\u00a0M.: Aerosol lidar intercomparison in the\nframework of the EARLINET project. 2.Aerosol backscatter algorithms, Appl.\nOptics, 43, 977\u2013989,\nhttps:\/\/doi.org\/10.1364\/AO.43.000977,\n2004.","DOI":"10.1364\/AO.43.000977"},{"key":"ref7","doi-asserted-by":"crossref","unstructured":"Boselli,\u00a0A., Armenante,\u00a0M., D'Avino,\u00a0L., D'Isidoro,\u00a0M., Pisani,\u00a0G.,\nSpinelli,\u00a0N., and Wang,\u00a0X.: Atmospheric aerosol characterization over Naples\nduring 2000\u20132003 EARLINET project: planetary boundary-layer evolution and\nlayering, Bound.-Lay. Meteorol., 132, 151\u2013165, 2009.","DOI":"10.1007\/s10546-009-9382-6"},{"key":"ref8","doi-asserted-by":"crossref","unstructured":"Burton,\u00a0S.\u00a0P., Ferrare,\u00a0R.\u00a0A., Hostetler,\u00a0C.\u00a0A., Hair,\u00a0J.\u00a0W., Rogers,\u00a0R.\u00a0R.,\nObland,\u00a0M.\u00a0D., Butler,\u00a0C.\u00a0F., Cook,\u00a0A.\u00a0L., Harper,\u00a0D.\u00a0B., and Froyd,\u00a0K.\u00a0D.:\nAerosol classification using airborne High Spectral Resolution Lidar\nmeasurements \u2013 methodology and examples, Atmos. Meas. Tech., 5, 73\u201398,\nhttps:\/\/doi.org\/10.5194\/amt-5-73-2012,\n2012.","DOI":"10.5194\/amt-5-73-2012"},{"key":"ref9","doi-asserted-by":"crossref","unstructured":"Burton,\u00a0S.\u00a0P., Ferrare,\u00a0R.\u00a0A., Vaughan,\u00a0M.\u00a0A., Omar,\u00a0A.\u00a0H., Rogers,\u00a0R.\u00a0R.,\nHostetler,\u00a0C.\u00a0A., and Hair,\u00a0J.\u00a0W.: Aerosol classification from airborne HSRL\nand comparisons with the CALIPSO vertical feature mask, Atmos. Meas. Tech.,\n6, 1397\u20131412,\nhttps:\/\/doi.org\/10.5194\/amt-6-1397-2013,\n2013.","DOI":"10.5194\/amt-6-1397-2013"},{"key":"ref10","doi-asserted-by":"crossref","unstructured":"Campbell,\u00a0J.\u00a0R., Tackett,\u00a0J.\u00a0L., Reid,\u00a0J.\u00a0S., Zhang,\u00a0J., Curtis,\u00a0C.\u00a0A.,\nHyer,\u00a0E.\u00a0J., Sessions,\u00a0W.\u00a0R., Westphal,\u00a0D.\u00a0L., Prospero,\u00a0J.\u00a0M.,\nWelton,\u00a0E.\u00a0J., Omar,\u00a0A.\u00a0H., Vaughan,\u00a0M.\u00a0A., and Winker,\u00a0D.\u00a0M.: Evaluating\nnighttime CALIOP 0.532\u202f\u00b5m aerosol optical depth and extinction\ncoefficient retrievals, Atmos. Meas. Tech., 5, 2143\u20132160,\nhttps:\/\/doi.org\/10.5194\/amt-5-2143-2012,\n2012.","DOI":"10.5194\/amt-5-2143-2012"},{"key":"ref11","unstructured":"Draxler,\u00a0R.\u00a0R. and Hess,\u00a0G.\u00a0D.: An overview of the HYSPLIT4 modeling system\nof trajectories, dispersion, and deposition, Aust. Meteor. Mag., 47,\n295\u2013308, 1998."},{"key":"ref12","unstructured":"EARLINET\u00a0publishing\u00a0group\u00a02000\u20132010 (Adam,\u00a0M., Alados-Arboledas,\u00a0L.,\nAlthausen,\u00a0D., Amiridis,\u00a0V., Amodeo,\u00a0A., Ansmann,\u00a0A., Apituley,\u00a0A.,\nArshinov,\u00a0Y., Balis,\u00a0D., Belegante,\u00a0L., Bobrovnikov,\u00a0S., Boselli,\u00a0A.,\nBravo-Aranda,\u00a0J.\u00a0A., B\u00f6senberg,\u00a0J., Carstea,\u00a0E., Chaikovsky,\u00a0A.,\nComer\u00f3n,\u00a0A., D'Amico,\u00a0G., Daou,\u00a0D., Dreischuh,\u00a0T., Engelmann,\u00a0R.,\nFinger,\u00a0F., Freudenthaler,\u00a0V., Garcia-Vizcaino,\u00a0D., Garc\u00eda,\u00a0A.\u00a0J.\u00a0F.,\nGei\u00df,\u00a0A., Giannakaki,\u00a0E., Giehl,\u00a0H., Giunta,\u00a0A., de\u00a0Graaf,\u00a0M.,\nGranados-Mu\u00f1oz,\u00a0M.\u00a0J., Grein,\u00a0M., Grigorov,\u00a0I., Gro\u00df,\u00a0S.,\nGruening,\u00a0C., Guerrero-Rascado,\u00a0J.\u00a0L., Haeffelin,\u00a0M., Hayek,\u00a0T., Iarlori,\u00a0M.,\nKanitz,\u00a0T., Kokkalis,\u00a0P., Linn\u00e9,\u00a0H., Madonna,\u00a0F., Mamouriat,\u00a0R.\u00a0E.,\nMatthias,\u00a0V., Mattis,\u00a0I., Men\u00e9ndez,\u00a0F.\u00a0M., Mitev,\u00a0V., Mona,\u00a0L.,\nMorille,\u00a0Y., Mu\u00f1oz,\u00a0C., M\u00fcller,\u00a0A., M\u00fcller,\u00a0D.,\nNavas-Guzm\u00e1n,\u00a0F., Nemuc,\u00a0A., Nicolae,\u00a0D., Pandolfi,\u00a0M., Papayannis,\u00a0A.,\nPappalardo,\u00a0G., Pelon,\u00a0J., Perrone,\u00a0M.\u00a0R., Pietruczuk,\u00a0A., Pisani,\u00a0G.,\nPotma,\u00a0C., Prei\u00dfler,\u00a0J., Pujadas,\u00a0M., Putaud,\u00a0J., Radu,\u00a0C., Ravetta,\u00a0F.,\nReigert,\u00a0A., Rizi,\u00a0V., Rocadenbosch,\u00a0F., Rodr\u00edguez,\u00a0A., Sauvage,\u00a0L.,\nSchmidt,\u00a0J., Schnell,\u00a0F., Schwarz,\u00a0A., Seifert,\u00a0P., Serikov,\u00a0I., Sicard,\u00a0M.,\nSilva,\u00a0A.\u00a0M., Simeonov,\u00a0V., Siomos,\u00a0N., Sirch,\u00a0T., Spinelli,\u00a0N.,\nStoyanov,\u00a0D., Talianu,\u00a0C., Tesche,\u00a0M., De\u00a0Tomasi,\u00a0F., Trickl,\u00a0T.,\nVaughan,\u00a0G., Volten,\u00a0H., Wagner,\u00a0F., Wandinger,\u00a0U., Wang,\u00a0X., Wiegner,\u00a0M.,\nand Wilson,\u00a0K.\u00a0M.): EARLINET Correlative Observations for CALIPSO\n(2006\u20132010), World Data Center for Climate (WDCC), Hamburg, Germany,\nhttps:\/\/doi.org\/10.1594\/WDCC\/EN_Calipso_2006-2010,\n2014."},{"key":"ref13","doi-asserted-by":"crossref","unstructured":"Gro\u00df,\u00a0S., Tesche,\u00a0M., Freudenthaler,\u00a0V., Toledano,\u00a0C., Wiegner,\u00a0M.,\nAnsmann,\u00a0A., Althausen,\u00a0D., and Seefeldner,\u00a0M.: Characterization of Saharan\ndust, marine aerosols and mixtures of biomass burning aerosols and dust by\nmeans of multi-wavelength depolarization-and Raman-measurements during\nSAMUM-2, Tellus B, 63, 706\u2013724, 2011.","DOI":"10.1111\/j.1600-0889.2011.00556.x"},{"key":"ref14","doi-asserted-by":"crossref","unstructured":"Guerrero-Rascado,\u00a0J.\u00a0L., Ruiz,\u00a0B., and Alados\u00a0Arboledas,\u00a0L.: Multi-spectral\nLidar characterization of the vertical structure of Saharan dust aerosol over\nsouthern Spain, Atmos. Environ., 42, 2668\u20132681,\nhttps:\/\/doi.org\/10.1016\/j.atmosenv.2007.12.062,\n2008.","DOI":"10.1016\/j.atmosenv.2007.12.062"},{"key":"ref15","doi-asserted-by":"crossref","unstructured":"Guerrero-Rascado,\u00a0J.\u00a0L., Olmo,\u00a0F.\u00a0J., Avil\u00e9s-Rodr\u00edguez,\u00a0I.,\nNavas-Guzm\u00e1n,\u00a0F., P\u00e9rez-Ram\u00edrez,\u00a0D., Lyamani,\u00a0H., and\nAlados\u00a0Arboledas,\u00a0L.: Extreme Saharan dust event over the southern Iberian\nPeninsula in september 2007: active and passive remote sensing from surface\nand satellite, Atmos. Chem. Phys., 9, 8453\u20138469,\nhttps:\/\/doi.org\/10.5194\/acp-9-8453-2009,\n2009.","DOI":"10.5194\/acp-9-8453-2009"},{"key":"ref16","doi-asserted-by":"crossref","unstructured":"Hu,\u00a0Y., Vaughan,\u00a0M., Liu,\u00a0Z., Lin,\u00a0B., Yang,\u00a0P., Flittner,\u00a0D., Hunt,\u00a0B.,\nKuehn,\u00a0R., Huang,\u00a0J., Wu,\u00a0D., Rodier,\u00a0S., Powell,\u00a0K., Trepte,\u00a0C., and\nWinker,\u00a0D.: The depolarization \u2013attenuated backscatter relation: CALIPSO\nlidar measurements vs. theory, Opt. Express, 9, 5327\u20135332,\nhttps:\/\/doi.org\/10.1364\/OE.15.005327,\n2007.","DOI":"10.1364\/OE.15.005327"},{"key":"ref17","doi-asserted-by":"crossref","unstructured":"Hu,\u00a0Y., Winker,\u00a0D., Vaughan,\u00a0M., Lin,\u00a0B., Omar,\u00a0A., Trepte,\u00a0C., Flittner,\u00a0C.,\nYang,\u00a0P., Nasiri,\u00a0L.\u00a0N., Baum,\u00a0B., Holz,\u00a0R., Sun,\u00a0W., Liu,\u00a0Z., Wang,\u00a0Z.,\nYoung,\u00a0S., Stamnes,\u00a0K., Huang,\u00a0J., and Kuehn,\u00a0R.: CALIPSO\/CALIOP cloud phase\ndiscrimination algorithm, J. Atmos. Ocean. Tech., 26, 2293\u20132309,\nhttps:\/\/doi.org\/10.1175\/2009JTECHA1280.1,\n2009.","DOI":"10.1175\/2009JTECHA1280.1"},{"key":"ref18","doi-asserted-by":"crossref","unstructured":"Illingworth,\u00a0A.\u00a0J., Barker,\u00a0H.\u00a0W., Beljaars,\u00a0A., Ceccaldi,\u00a0M., Chepfer,\u00a0H.,\nClerbaux,\u00a0N., Cole,\u00a0J., Delano\u00eb,\u00a0J., Domenech,\u00a0C., Donovan,\u00a0D.\u00a0P.,\nFukuda,\u00a0S., Hirikata,\u00a0M., Hogan,\u00a0R.\u00a0J., Huenerbein,\u00a0A., Kollias,\u00a0P.,\nKubota,\u00a0T., Nakajima,\u00a0T., Nishizawa,\u00a0T.\u00a0Y., Ohno,\u00a0Y., Okamoto,\u00a0H., Oki,\u00a0R.,\nSato,\u00a0K., Satoh,\u00a0M., Shephard,\u00a0M.\u00a0W., Vel\u00e1zquez-Bl\u00e1zquez,\u00a0A.,\nWandinger,\u00a0U., Wehr,\u00a0T., and Van\u00a0Zadelhoff,\u00a0G.\u00a0J.: The earthcare satellite:\nthe next step forward in global measurements of clouds, aerosols,\nprecipitation, and radiation, B. Am. Meteorol. Soc., 96, 1311\u20131332,\nhttps:\/\/doi.org\/10.1175\/BAMS-D-12-00227.1,\n2015.","DOI":"10.1175\/BAMS-D-12-00227.1"},{"key":"ref19","doi-asserted-by":"crossref","unstructured":"Kanitz,\u00a0T., Ansmann,\u00a0A., Foth,\u00a0A., Seifert,\u00a0P., Wandinger,\u00a0U., Engelmann,\u00a0R.,\nBaars,\u00a0H., Althausen,\u00a0D., Casiccia,\u00a0C., and Zamorano,\u00a0F.: Surface matters:\nlimitations of CALIPSO V3 aerosol typing in coastal regions, Atmos. Meas.\nTech., 7, 2061\u20132072,\nhttps:\/\/doi.org\/10.5194\/amt-7-2061-2014,\n2014.","DOI":"10.5194\/amt-7-2061-2014"},{"key":"ref20","doi-asserted-by":"crossref","unstructured":"Kim,\u00a0M.-H., Kim,\u00a0S.-W., Yoon,\u00a0S.-C., and Omar,\u00a0A.\u00a0H.: Comparison of aerosol\noptical depth between CALIOP and MODIS-Aqua for CALIOP aerosol subtypes over\nthe ocean,\u00a0J. Geophys. Res.-Atmos., 118, 13241\u201313252,\nhttps:\/\/doi.org\/10.1002\/2013JD019527,\n2013.","DOI":"10.1002\/2013JD019527"},{"key":"ref21","doi-asserted-by":"crossref","unstructured":"Kittaka,\u00a0C., Winker,\u00a0D.\u00a0M., Vaughan,\u00a0M.\u00a0A., Omar,\u00a0A., and Remer,\u00a0L.\u00a0A.:\nIntercomparison of column aerosol optical depths from CALIPSO and MODIS-Aqua,\nAtmos. Meas. Tech., 4, 131\u2013141,\nhttps:\/\/doi.org\/10.5194\/amt-4-131-2011,\n2011.","DOI":"10.5194\/amt-4-131-2011"},{"key":"ref22","doi-asserted-by":"crossref","unstructured":"Liu,\u00a0Z., Liu,\u00a0D., Huang,\u00a0J., Vaughan,\u00a0M., Uno,\u00a0I., Sugimoto,\u00a0N.,\nKittaka,\u00a0C., Trepte,\u00a0C., Wang,\u00a0Z., Hostetler,\u00a0C., and Winker,\u00a0D.:\nAirborne dust distributions over the Tibetan Plateau and\nsurrounding areas derived from the first year of CALIPSO lidar observations,\nAtmos. Chem. Phys., 8, 5045\u20135060,\nhttps:\/\/doi.org\/10.5194\/acp-8-5045-2008,\n2008.","DOI":"10.5194\/acp-8-5045-2008"},{"key":"ref23","doi-asserted-by":"crossref","unstructured":"Liu,\u00a0Z., Vaughan,\u00a0M., Winker,\u00a0D., Kittaka,\u00a0C., Getzewich,\u00a0B., Kuehn,\u00a0R.,\nOmar,\u00a0A., Powell,\u00a0K., Trepte,\u00a0C., and Hostetler,\u00a0C.: The CALIPSO lidar cloud\nand aerosol discrimination: version 2 algorithm and initial assessment of\nperformance,\u00a0J. Atmos. Ocean. Tech., 26, 1198\u20131213, 2009.","DOI":"10.1175\/2009JTECHA1229.1"},{"key":"ref24","doi-asserted-by":"crossref","unstructured":"Lopes,\u00a0F.\u00a0J.\u00a0S., Landulfo,\u00a0E., and Vaughan,\u00a0M.\u00a0A.: Evaluating CALIPSO's 532\nnm lidar ratio selection algorithm using AERONET sun photometers in Brazil,\nAtmos. Meas. Tech., 6, 3281\u20133299,\nhttps:\/\/doi.org\/10.5194\/amt-6-3281-2013,\n2013.","DOI":"10.5194\/amt-6-3281-2013"},{"key":"ref25","doi-asserted-by":"crossref","unstructured":"Ma,\u00a0X., Bartlett,\u00a0K., Harmon,\u00a0K., and Yu,\u00a0F.: Comparison of AOD between\nCALIPSO and MODIS: significant differences over major dust and biomass\nburning regions, Atmos. Meas. Tech., 6, 2391\u20132401,\nhttps:\/\/doi.org\/10.5194\/amt-6-2391-2013,\n2013.","DOI":"10.5194\/amt-6-2391-2013"},{"key":"ref26","doi-asserted-by":"crossref","unstructured":"Madonna,\u00a0F., Amodeo,\u00a0A., Boselli,\u00a0A., Cornacchia,\u00a0C., Cuomo,\u00a0V., D'Amico,\u00a0G.,\nGiunta,\u00a0A., Mona,\u00a0L., and Pappalardo,\u00a0G.: CIAO: the CNR-IMAA advanced\nobservatory for atmospheric research, Atmos. Meas. 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