ACPD Atmospheric Chemistry and Physics Discussions ACPD 1680-7375 Copernicus GmbH Göttingen, Germany 10.5194/acpd-11-29883-2011 Influence of aerosols and thin cirrus clouds on the GOSAT-observed CO<sub>2</sub>: a case study over Tsukuba Uchino O. 1 Kikuchi N. 1 Sakai T. 2 Morino I. 1 Yoshida Y. 1 Nagai T. 2 Shimizu A. 1 Shibata T. 3 Yamazaki A. 2 Uchiyama A. 2 Kikuchi N. 1 Oshchepkov S. 1 Bril A. 1 Yokota T. 1 National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan Meteorological Research Institute, 1-1 Nagamine, Tsukuba, Ibaraki 305-0052, Japan Graduate School of Environmental studies, Nagoya University, D2-1(510) Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan 08 11 2011 11 11 29883 29914 This is an open-access article ditributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. This article is available from http://www.atmos-chem-phys-discuss.net/11/29883/2011/acpd-11-29883-2011.html The full text article is available as a PDF file from http://www.atmos-chem-phys-discuss.net/11/29883/2011/acpd-11-29883-2011.pdf

Lidar observations of vertical profiles of aerosols and thin cirrus clouds were made at Tsukuba (36.1&deg; N, 140.1&deg; E), Japan, to investigate the influence of aerosols and thin cirrus clouds on the column-averaged dry-air mole fraction of carbon dioxide (XCO<sub>2</sub>) retrieved from observation data of the Thermal And Near-infrared Sensor for carbon Observation Fourier Transform Spectrometer, measured in the Short-Wavelength InfraRed band (TANSO-FTS SWIR), onboard the Greenhouse gases Observing SATellite (GOSAT). The lidar system measured the backscattering ratio, depolarization ratio, and/or the wavelength exponent of atmospheric particles. The lidar observations and ground-based high-resolution FTS measurements at the Tsukuba Total Carbon Column Observing Network (Tsukuba TCCON) site were recorded simultaneously during passages of GOSAT over Tsukuba. <br><br> GOSAT SWIR XCO<sub>2</sub> data (version 01.xx) released in August 2010 were compared with the lidar and Tsukuba TCCON data. High-altitude aerosols and thin cirrus clouds had a large impact on the GOSAT SWIR XCO<sub>2</sub> results. By taking into account the observed aerosol/cirrus vertical profiles and using a more adequate solar irradiance database in the GOSAT SWIR retrieval, the difference between the GOSAT SWIR XCO<sub>2</sub> data and the Tsukuba TCCON data was greatly reduced.

 References Butz,~A., Hasekamp,~O P., Frankenberg,~C., and Aben,~I.: Retrievals of atmospheric \chemCO_2 from simulated space-borne measurements of backscattered near-infrared sunlight: accounting for aerosol effects, Appl. Opt., 48, 3322–3336, 2009. Chevallier,~F., Maksyutov,~S., Bousquet,~P., Bréon,~F.-M., Saito,~R., Yoshida,~Y., and Yokota,~T.: On the accuracy of the \chemCO_2 surface fluxes to be estimated from the GOSAT observations, Geophys. Res. Lett., 36, L19807, http://dx.doi.org/10.1029/2009GL040108doi:10.1029/2009GL040108, 2009. Cox,~P M., Betts,~R A., Jones,~C D., Spall,~S A., and Totterdell,~I J.: Acceleration of global warming due to carbon-cycle feedbacks in a coupled climate model, Nature, 408, 184–187, 2000. Eguchi,~N., Yokota,~T., and Inoue,~G.: Characteristics of cirrus clouds from ICESat/GLAS observations, Geophys. Res. Lett., 34, L09810, http://dx.doi.org/10.1029/2007GL029529doi:10.1029/2007GL029529, 2007. Fernald,~F G.: Analysis of atmospheric lidar observations: some comments, Appl. Opt., 23, 652–653, 1984. Hess,~M., Koepke,~P., and Schult,~I.: Optical properties of aerosols and clouds: the software package OPAC, B. Am. Meteorol. Soc., 79, 831–844, 1998. % Houwelling,~S., Hartmann,~W., Aben,~I., Schrijver,~H., Skidmore,~J., Roelofs,~G.-J., and Breon,~F.-M.: Evidence of systematic errors in SCIAMACHY-observed \chemCO_2 due to aerosols, Atmos. Chem. Phys., 5, 3003–3013, 2005. % ### SELF-REFERENCE ### Houweling,~S., Hartmann,~W., Aben,~I., Schrijver,~H., Skidmore,~J., Roelofs,~G.-J., and Breon,~F.-M.: Evidence of systematic errors in SCIAMACHY-observed \chemCO_2 due to aerosols, Atmos. Chem. Phys., 5, 3003–3013, http://dx.doi.org/10.5194/acp-5-3003-2005doi:10.5194/acp-5-3003-2005, 2005. % Hungershoefer,~K., Bréon,~F.-M., Peylin,~P., Chevallier,~F., Rayner,~P., Klonecki,~A., Houweling,~S., and Marshall,~J.: Evaluation of various observing systems for the global monitoring of \chemCO_2 surface fluxes, Atmos. Chem. Phys., 10, 10503–10520, 2010. % ### SELF-REFERENCE ### Hungershoefer,~K., Breon,~F.-M., Peylin,~P., Chevallier,~F., Rayner,~P., Klonecki,~A., Houweling,~S., and Marshall,~J.: Evaluation of various observing systems for the global monitoring of \chemCO_2 surface fluxes, Atmos. Chem. Phys., 10, 10503–10520, http://dx.doi.org/10.5194/acp-10-10503-2010doi:10.5194/acp-10-10503-2010, 2010. Intergovernmental Panel on Climate Change (IPCC), Climate change 2007: The Physical Science Basis: Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Solomon,~S., Qin,~S., Manning,~M., Chen,~Z., Marquis,~M., Averyt,~K B., Tignor,~M., and Miller,~H L., Cambridge University Press, Cambridge, UK and New York, USA, 996~pp., 2007. Kobayashi,~E., Uchiyama,~A., Yamazaki,~A., and Matsuse,~K.: Application of the maximum likelihood method to the inversion algorithm for analyzing aerosol optical properties from sun and sky radiance measurements,~J. Meteor. Soc. Japan, 84, 1047–1062, 2006. Kuze,~A., Suto,~H., Nakajima,~M., and Hamazaki,~T.: Thermal and near infrared sensor for carbon observation Fourier-transform spectrometer on the Greenhouse Gases Observing Satellite for greenhouse gases monitoring, Appl. Opt., 48, 6716–6733, 2009. Messerschmidt,~J., Macatangay,~R., Notholt,~J., Petri,~C., Warneke,~T., and Weinzierl,~C.: Side by side measurements of \chemCO_2 by ground-based Fourier transform spectrometry (FTS), Tellus B, 62, 749–758, 2010. % Morino,~I., Uchino,~O., Inoue,~M., Yoshida,~Y., Yokota,~T., Wennberg,~P O., Toon,~G C., Wunch,~D., Roehl, M., Notholt,~J., Warneke,~T., Messerschmidt,~J., Griffith,~D W T., Deutscher,~N M., Sherlock,~V., Connor,~B., Robinson,~J., Sussmann,~R., and Rettinger,~M.: Preliminary validation of column-averaged volume mixing ratios of carbon dioxide and methane retrieved from GOSAT short-wavelength infrared spectra, Atmos. Meas. Tech., 4, 1061–1076, http://dx.doi.org/10.5194/amt-4-1061-2011doi:10.5194/amt-4-1061-2011, 2011. % ### SELF-REFERENCE ### Morino,~I., Uchino,~O., Inoue,~M., Yoshida,~Y., Yokota,~T., Wennberg,~P O., Toon,~G C., Wunch,~D., Roehl,~C M., Notholt,~J., Warneke,~T., Messerschmidt,~J., Griffith,~D W T., Deutscher,~N M., Sherlock,~V., Connor,~B., Robinson,~J., Sussmann,~R., and Rettinger,~M.: Preliminary validation of column-averaged volume mixing ratios of carbon dioxide and methane retrieved from GOSAT short-wavelength infrared spectra, Atmos. Meas. Tech., 4, 1061–1076, http://dx.doi.org/10.5194/amt-4-1061-2011doi:10.5194/amt-4-1061-2011, 2011. Ohyama,~H., Morino,~I., Nagahama,~T., Machida,~T., Suto,~H., Oguma,~H., Sawa,~Y., Matsueda,~H., Sugimoto,~N., Nakane,~H., and Nakagawa,~K.: Column-averaged volume mixing ratio of \chemCO_2 measured with ground-based Fourier transform spectrometer at Tsukuba,~J. Geophys. Res., 114, D18303, http://dx.doi.org/10.1029/2008JD011465doi:10.1029/2008JD011465, 2009. Rayner,~P J. and O'Brien,~D M.: The utility of remotely sensed \chemCO_2 concentration data in surface source inversions, Geophys. Res. Lett., 28, 175–178, 2001. Sakai,~T., Nagai,~T., Nakazato,~M., Mano,~Y., and Matsumura,~T.: Ice clouds and Asian dust studied with lidar measurements of particle extinction-to-backscatter ratio, particle depolarization, and water-vapor mixing ratio over Tsukuba, Appl. Opt., 42, 7103–7116, 2003. % Sekiyama,~T T., Tanaka,~T Y., Shimizu,~A., and Miyoshi,~T.: Data assimilation of CALIPSO aerosol observations, Atmos. Chem. Phys., 10, 39–49, 2010. % ### SELF-REFERENCE ### Sekiyama,~T T., Tanaka,~T Y., Shimizu,~A., and Miyoshi,~T.: Data assimilation of CALIPSO aerosol observations, Atmos. Chem. Phys., 10, 39–49, http://dx.doi.org/10.5194/acp-10-39-2010doi:10.5194/acp-10-39-2010, 2010. % Schutgens,~N A J., Miyoshi,~T., Takemura,~T., and Nakajima,~T.: Applying an ensemble Kalman filter to the assimilation of AERONET observations in a global aerosol transport model, Atmos. Chem. Phys., 10, 2561–2567, 2010. % ### SELF-REFERENCE ### Schutgens,~N A J., Miyoshi,~T., Takemura,~T., and Nakajima,~T.: Applying an ensemble Kalman filter to the assimilation of AERONET observations in a global aerosol transport model, Atmos. Chem. Phys., 10, 2561–2576, http://dx.doi.org/10.5194/acp-10-2561-2010doi:10.5194/acp-10-2561-2010, 2010. Shimizu,~A., Sugimoto,~N., Matsui,~I., Arao,~K., Uno,~I., Murayama,~T., Kagawa,~N., Aoki,~A., Uchiyama,~A., and Yamazaki,~A.: Continuous observations of Asian dust and other aerosols by polarization lidars in China and Japan during ACE-Asia,~J. Geophys. Res., 109, D19S17, http://dx.doi.org/10.1029/200JD003253doi:10.1029/200JD003253, 2004. Shiobara,~M., Hayasaka,~T., Nakajima,~T., and Tanaka,~M.: Aerosol monitoring using a scanning spectral radiometer in Sendai, Japan,~J. Meteor. Soc. Japan, 69, 57–70, 1991. Takemura,~T., Okamoto,~H., Maruyama,~Y., Numaguti,~A., Higurashi,~A., and Nakajima,~T.: Global three-dimensional simulation of aerosol optical thickness distribution of various origins,~J. Geophys. Res., 105, 17853–17873, 2000. Takemura,~T., Nakajima,~T., Dubovik,~O D., Holben,~B N., Kinne,~S.: Single-scattering albedo and Radiative forcing of various aerosol species with a global three-dimensional model,~J. Climate, 15, 333–352, 2002 Tanaka, T., Miyamoto, Y., Morino, I., Machida, T., Nagahama, T., Sawa, Y., Matsueda, H., Wunch, D., Kawakami, S., and Uchino, O.: Aircraft measurements of carbon dioxide and methane for the calibration of ground-based high-resolution Fourier Transform Spectrometers and a comparison to GOSAT data measured over Tsukuba and Moshiri, in preparation, 2011. Toon,~G C., Blavier,~J.-F., Sen,~B., Salawitch,~R J., Osterman,~G B., Notholt,~J., Rex,~M., McElroy,~C T., and Russell III,~J M.: Ground-based observations of Arctic \chemO_3 loss during spring and summer 1997,~J. Geophys. Res., 104(D21), 26497–26510, 1999. Uchino,~O., Sakai,~T., Nagai,~T., Sakashita,~T., Suzuki,~K., Shibata,~T., Morino,~I., and Yokota,~T.: Lidar observation of stratospheric aerosols increased from the 2009 Mount Sarychev volcanic eruption,~J. Remote Sens. Soc. Japan, 30, 149–155, 2010 (in Japanese). Washenfelder,~R A., Toon,~G C., Blavier,~J.-F., Yang,~Z., Allen,~N T., Wennberg,~P O., Vay,~S A., Matross,~D M., and Daube,~B C.: Carbon dioxide column abundances at the Wisconsin Tall Tower site,~J. Geophys. Res., 111, D22305, http://dx.doi.org/10.1029/2006JD007154doi:10.1029/2006JD007154, 2006. Winker,~D M., Hunt,~W H., and McGill,~M J.: Initial performance assessment of CALIOP, Geophys. Res. Lett., 34, L19803, http://dx.doi.org/10.1029/2007GL030135doi:10.1029/2007GL030135, 2007. WMO: The state of greenhouse gases in the atmosphere based on global observations through 2009, WMO Greenhouse Gas Bulletin, No 6, 2010. % Wunch,~D., Toon,~G C., Wennberg,~P O., Wofsy,~S C., Stephens,~B B., Fisher,~M L., Uchino,~O., Abshire,~J B., Bernath,~P., Biraud,~S C., Blavier,~J.-F L., Boone,~C., Bowman,~K P., Browell,~E V., Campos,~T., Connor,~B J., Daube,~B C., Deutscher,~N M., Diao,~M., Elkins,~J W., Gerbig,~C., Gottlieb,~E., Griffith,~D W T., Hurst,~D F., Jimènez,~R., Keppel-Aleks,~G., Kort,~E A., Macatangay,~R., Machida,~T., Matsueda,~H., Moore,~F., Morino,~I., Park,~S., Robinson,~J., Roehl,~C M., Sawa,~Y., Sherlock,~V., Sweeney,~C., Tanaka,~T., and Zondlo,~M A.: Calibration of the Total Carbon Column Observing Network using aircraft profile data, Atmos. Meas. Tech., 3, 1351–1362, http://dx.doi.org/10.5194/amt-3–1351–2010doi:10.5194/amt-3–1351–2010, 2010. % ### SELF-REFERENCE ### Wunch,~D., Toon,~G C., Wennberg,~P O., Wofsy,~S C., Stephens,~B B., Fischer,~M L., Uchino,~O., Abshire,~J B., Bernath,~P., Biraud,~S C., Blavier,~J.-F L., Boone,~C., Bowman,~K P., Browell,~E V., Campos,~T., Connor,~B J., Daube,~B C., Deutscher,~N M., Diao,~M., Elkins,~J W., Gerbig,~C., Gottlieb,~E., Griffith,~D W T., Hurst,~D F., Jiménez,~R., Keppel-Aleks,~G., Kort,~E A., Macatangay,~R., Machida,~T., Matsueda,~H., Moore,~F., Morino,~I., Park,~S., Robinson,~J., Roehl,~C M., Sawa,~Y., Sherlock,~V., Sweeney,~C., Tanaka,~T., and Zondlo,~M A.: Calibration of the Total Carbon Column Observing Network using aircraft profile data, Atmos. Meas. Tech., 3, 1351–1362, http://dx.doi.org/10.5194/amt-3-1351-2010doi:10.5194/amt-3-1351-2010, 2010. Wunch,~D., Toon,~G C., Blavier,~J.-F L., Washenfelder,~R A., Notholt,~J., Connor,~B J., Griffith,~D W T., Sherlock,~V., and Wennberg,~P O.: The Total Carbon Column Observing Network (TCCON), Phil. Trans R. Soc A., 369, 2087–2112, http://dx.doi.org/10.1098/rsta.2010.0240doi:10.1098/rsta.2010.0240, 2011. % Yoshida,~Y., Ota,~Y., Eguchi,~N., Kikuchi,~N., Nobuta,~K., Tran,~H., Morino,~I., and Yokota,~T.: Retrieval algorithm for \chemCO_2 and \chemCH_4 column abundances from short-wavelength infrared spectra observations by the Greenhouse gases observing satellite, Atmos. Meas. Tech., 4, 717–734, http://dx.doi.org/10.5194/amt-4–717-2011doi:10.5194/amt-4–717-2011, 2011. % ### SELF-REFERENCE ### Yoshida,~Y., Ota,~Y., Eguchi,~N., Kikuchi,~N., Nobuta,~K., Tran,~H., Morino,~I., and Yokota,~T.: Retrieval algorithm for \chemCO_2 and \chemCH_4 column abundances from short-wavelength infrared spectral observations by the Greenhouse gases observing satellite, Atmos. Meas. Tech., 4, 717–734, http://dx.doi.org/10.5194/amt-4-717-2011doi:10.5194/amt-4-717-2011, 2011.