Atmospheric Measurement Techniques www.atmos-meas-tech.net 1867-1381 1867-8548 2 1 2009 10.5194/amt-2-125-2009 http://www.atmos-meas-tech.net/2/125/2009/ http://www.atmos-meas-tech.net/2/125/2009/amt-2-125-2009.html http://www.atmos-meas-tech.net/2/125/2009/amt-2-125-2009.pdf 125 145 2009-04-27 Intercomparison of stratospheric ozone and temperature profiles during the October 2005 Hohenpeißenberg Ozone Profiling Experiment (HOPE) W. Steinbrecht wolfgang.steinbrecht@dwd.de T. J. McGee L. W. Twigg H. Claude F. Schönenborn G. K. Sumnicht D. Silbert Meteorologisches Observatorium, Deutscher Wetterdienst, Hohenpeißenberg, Germany NASA Goddard Space Flight Center, Greenbelt MD, USA Thirteen clear nights in October 2005 allowed successful intercomparison of the lidar operated since 1987 by the German Weather Service (DWD) at Hohenpeißenberg (47.8&deg; N, 11.0&deg; E) with the Network for the Detection of Atmospheric Composition Change (NDACC) travelling standard lidar operated by NASA's Goddard Space Flight Center. Both lidars provide ozone profiles in the stratosphere, and temperature profiles in the strato- and mesosphere. Additional ozone profiles came from on-site Brewer/Mast ozonesondes, additional temperature profiles from Vaisala RS92 radiosondes launched at Munich (65 km north-east), and from operational analyses by the US National Centers for Environmental Prediction (NCEP). <br><br> The intercomparison confirmed a low bias for ozone from the DWD lidar in the 33 to 43 km region, by up to 10%. This bias is caused by the DWD ozone algorithm, and is consistent with previous comparisons of the DWD lidar with SAGE, GOMOS and other instruments. During HOPE, precision (repeatability) for ozone data from both lidars was better than 5% between 20 and 40 km altitude, dropping to 10% near 45 km, and to 50% near 50 km. These results are consistent with previous NDACC intercomparisons, and confirm the reliability of the NASA NDACC travelling standard lidar. <br><br> Temperature from the DWD lidar showed a 1 to 2 K cold bias from 30 to 65 km against the NASA lidar, and a 2 to 4 K cold bias against radiosondes and NCEP. This is also consistent with previous intercomparisons. Temperature precision (repeatability) for the DWD lidar was better than 2 K from 30 to 50 km, decreasing to 10 K near 70 km. For the NASA lidar, precision is expected to be better than 1 K over the 30 to 70 km range. However, due to the much lower temperature precision of the DWD lidar, this could not be checked during HOPE. It was noted that the current DWD algorithm over-estimates temperature uncertainty, which should be reduced by a factor of 2.2 (e.g. from 22 K to 10 K near 70 km). <br><br> The HOPE intercomparison did uncover a 290 m range error (upward shift) of the DWD lidar data. When this shift is removed, the bias of the ozone algorithm is corrected, and a better background estimation is used, ozone profiles from the DWD lidar agree very well with both the NASA lidar and SAGE. Systematic differences are then smaller than 3% between 20 and 44 km, and smaller than 5% between 17 and 47 km. These differences are close to zero, and are not (statistically) significant. The cold temperature bias against the NASA lidar also disappears when the DWD temperature processing is corrected for the 290 m range error, and more appropriate values for the Earth's gravity acceleration are used. Compared to the radiosondes or NCEP analyses, however, both lidars show 1 to 2 K lower temperatures over the entire 15 to 35 km range. <br><br> Temperature and ozone variations are tracked well by both lidars, by ozone- and radiosondes, and by NCEP analyses. Correlations exceed 0.8 to 0.9 at most stratospheric levels. They decrease at levels above 40 km, especially for ozone or NCEP temperature. <br><br> The ozone and temperature bias of the DWD lidar does not appear to have changed over time. Records of ozone and temperature from the DWD lidar should be consistent over the years. Nevertheless, the HOPE intercomparison was instrumental in uncovering and repairing several long-standing errors. HOPE also confirmed the reliability of the NASA lidar as a travelling standard. Now the entire DWD lidar data record needs to be reprocessed with the improved and revised algorithms. Braathen, G. O., Godin-Beekmann, S., Keckhut, P., McGee, T. J., Gross, M. R., Vialle, C., and Hauchecorne, A.: Intercomparison of stratospheric ozone and temperature measurements at the Observatoire de Haute Provence during the OTOIC NDSC validation campaign from 1–18 July 1997, Atmos. Chem. Phys. Discuss., 4, 5303–5344, 2004. Brinksma, E. J., Meijer, Y., McDermid, I. S., Cageao, R., Bergwerff, J., Swart, D. P. J., Ubachs, W., Matthews, A., Hogervorst, W., and Hovenier, J.: First lidar observations of mesospheric hydroxyl, Geophys. Res. Lett., 25, 51–54, 1998. Burris J., McGee, T. J., Hoegy, W., Lait, L., Twigg, L. W., Sumnicht, G., Heaps, W., Hostetler, C., Bui, T. P., Neuber, R., and McDermid, I. S.: Validation of temperature measurements from the airborne Raman ozone temperature and aerosol lidar during SOLVE, J. Geophys. Res., 107(D20), 8286, doi:10.1029/2001JD001028, 2002. Claude, H., Schönenborn, F., Steinbrecht, W., and Vandersee, W.: New evidence for ozone depletion in the upper stratosphere, Geophys. Res. Lett., 21(22), 2409–2412, 1994. Carswell, A. I., Pal, S. R., Steinbrecht, W., Whiteway, J. A., Ulitsky, A., and Wang, T. Y.: Lidar measurements of the middle atmosphere Can. J. Phys., 69, 1076–1086, 1991. Donovan, D. P., Whiteway, J. A., and Carswell, A. I.: Correction for nonlinear photon-counting effects in lidar systems, Appl. Opt., 32, 6742–6753, 1993. Ferrare, R. A., McGee, T. J., Whiteman, D., Burris, J., Owens, M., Butler, J., Barnes, R. A., Schmidlin, F., Komhyr, W., Wang, P. H., McCormick, M. P., and Miller, A. J.: Lidar measurements of stratospheric temperature during STOIC, J. Geophys. Res., 100(D5), 9303–9312, 1995. Geh, B.: Aufbau einer automatischen Apparatur zur Messung der stratosphärischen Ozonkonzentration, Diploma thesis, Ludwig-Maximilians Universität, Munich, Germany, 66 pp., 1987. Godin, S., Carswell, A. I., Donovan, D. P., Claude, H., Steinbrecht, W., McDermid, I. S., McGee, T. J., Gross, M. R., Nakane, H., Swart, D. P. J., Bergwerff, H. B., and Uchino, O.: Ozone Differential Absorption Lidar Algorithm Intercomparison, Appl. Opt., 38, 6225–6236, 1999. Gross, M. R., McGee, T. J., Ferrare, R. A., Singh, U. N., and Kimvilikani, P.: Temperature Measurements Made with a Combined Rayleigh-Mie/Raman Lidar, Appl. Opt., 24, 5987-5995, 1997. Hauchecorne, A. and Chanin, M.-L.: Density and temperature profiles obtained by lidar between 35 and 70 km, Geophys. Res. Lett., 7, 565–568, 1980. Iikura, Y., Sugimoto, N., Sasano, Y., and Shimzu, H.: Improvement on lidar data processing for stratospheric aerosol measurements, Appl. Opt., 26, 5299–5306, 1987. % %Keckhut, P., Wild, J.D., Gelman, M., Miller, A.J., and Hauchecorne, A., %Investigations on long-term temperature changes in the upper stratosphere using %lidar data and NCEP analyses, J. Geophys. Res., 106(D8), 7937-7944, 2001. Keckhut, P., McDermid, I. S., Swart, D. P. J., McGee, T., Godin-Beekmann, S., Adriani, A., Barnes, J., Baray, J.-L., Bencherif, H., Claude, H., di Sarra, A. G., Fiocco, G., Hansen, G., Hauchecorne, A., Leblanc, T., Lee, C. H., Pal, S., Megie, G., Nakane, H., Neuber, R., Steinbrecht, W., and Thayer, J.: Review of ozone and temperature lidar validations performed within the framework of the Network for the Detection of Stratospheric Change, J. Environ. Monit., 6, 1–14, 2004. % %Komhyr, W.D., et al.: Comparison of STOIC 1989 ground-based lidar, microwave spectrometer, %and Dobson spectrophotometer Umkehr ozone profiles with ozone profiles from %balloon-borne electrochemical concentration cell ozonesondes, J. Geophys. %Res., 100(D5), 9273–9282, 1995. Leblanc, T., McDermid, I. S., Hauchecorne, A., and Keckhut, P.: Evaluation of optimization of lidar temperature analysis algorithms using simulated data. J. Geophys. Res., 103, 6177–6187, 1998. Margitan, J. J., Barnes, R. A., Brothers, G. B., Butler, J., Burris, J., Connor, B. J., Ferrare, R. A., Kerr, J. B., Komhyr, W. D., McCormick, M. P., McDermid, I. S., McElroy, C. T., McGee, T. J., Miller, A. J., Owens, M., Parrish, A. D., Parsons, C. L., Torres, A. L., Tsou, J. J., Walsh, T. D., and Whiteman, D.: Stratospheric ozone intercomparison campaign (STOIC) 1989: Overview, J. Geophys. Res., 100(D5), 9193–9208, 1995. McDermid, I. S., Godin, S. M., and Lindquist L. O.: Ground-based laser DIAL system for long-term measurements of stratospheric ozone, Appl. Opt., 29, 3603–3612, 1990. McDermid, I. S., Bergwerff, J., Bodeker, G. E., Boyd, I., Brinksma, E., Connor, B., Farmer, R., Gross, M., Kimvilakani, P., Matthews, W., McGee, T., Ormel, F., Parrish, A., Singh, U., Swart, D., Tsou, J., Wang, P., and Zawodny, J.: OPAL: Network for the Detection of Stratospheric Change Ozone Profiler Assessment at Lauder, New Zealand 1. Blind intercomparison, J. Geophys. Res., 103(D22), 28683–28692, 1998a. McDermid, I. S., Bergwerff, J., Bodeker, G. E., Boyd, I., Brinksma, E., Connor, B., Farmer, R., Gross, M., Kimvilakani, P., Matthews, W., McGee, T., Ormel, F., Parrish, A., Singh, U., Swart, D., and Tsou, J.: OPAL: Network for the detection of stratospheric change ozone profiler assessment at Lauder, New Zealand 2. Intercomparison of revised results, J. Geophys. Res., 103(D22), 28693–28700, 1998b. McGee, T. J., Whiteman, D., Ferrare, R., Butler, J. J., and Burris, J.: STROZ LITE: Stratospheric Ozone Lidar Trailer Experiment, Opt. Eng., 30, 31–39, 1991. McGee, T. J., Gross, M. R., Ferrare, R., Heaps, W., and Singh, U. N.: Raman DIAL measurements of stratospheric ozone in the presence of volcanic aerosols, Geophys. Res. Lett., 20, 955–958, 1993. McGee, T. J., Gross, M. R., Singh, U. N., Butler, J. J., and Kimvilakani, P. E.: Improved stratospheric ozone lidar, Opt. Eng., 34, 1421–1430, 1995a. McGee, T. J., Ferrare, R. A., Whiteman, D., Butler, J. J., Burris, J. F., and Owens, M. A.: Lidar measurements of stratospheric ozone during the STOIC campaign, J. Geophys. Res., 100(D5), 9255–9262, 1995b. McGee, T. J., Gross, M. R., Singh, U. N., Kimvilakani, P., Matthews, A., Bodeker, G., Connor, B., Tsou, J. J., Proffitt, M., and Margitan, J.: Vertical profile measurements of ozone at Lauder, New Zealand during ASHOE/MAESA, J. Geophys. Res., 102(D11), 13283–13290, 1997. McPeters, R. D., Hofmann, D., Clark, M., Flynn, L., Froidevaux, L., Gross, M., Johnson, B., Koenig, G., Liu, X., McDermid, I. S., McGee, T., Murcray, F., Newchurch, M.J., Oltmans, S., Parrish, A., Schnell, R., Singh, U., Tsou, J. J., Walsh, T., and Zawodny, J. M.: Results from the 1995 stratospheric ozone profile intercomparison at Mauna Loa, J. Geophys. Res., 104(D23), 30505–30514, 1999. Meijer, Y. J., Swart, D. P. J., Allaart, M., Andersen, S. B., Bodeker, G., Boyd, I., Braathen, G., Calisesi, Y., Claude, H., Dorokhov, V., von der Gathen, P., Gil, M., Godin-Beekmann, S., Goutail, F., Hansen, G., Karpetchko, A., Keckhut, P., Kelder, H. M., Koelemeijer, R., Kois, B., Koopman, R. M., Kopp, G., Lambert, J.-C., Leblanc, T., McDermid, I. S., Pal, S., Schets, H., Stubi, R., Suortti, T., Visconti, G., and Yela, M.: Pole-to-pole validation of Envisat GOMOS ozone profiles using data from ground-based and balloon sonde measurements, J. Geophys. Res., 109, D23305, doi:10.1029/2004JD004834, 2004. % %Megie, G., Allain, J.Y., Chanin, M.L., and Blamont, J.E.: Vertical %profile of stratospheric ozone (18-28 km) by lidar sounding from %the ground, Nature, 270, 329–331, 1977. Megie, G. J., Ancellet, G., and Pelon, J.: Lidar measurements of ozone vertical profiles, Appl. Opt., 24, 3454–3463, 1985. Press, W. H., Teukolsky, S. A., Vetterling, W. T., and Flannery, B. P.: Numerical Recipes in C, Cambridge University Press, Cambridge, UK, 994 pp., 1992. % %Randel, W. et al.: The SPARC Intercomparison of Middle-Atmosphere Climatologies, %J Clim, 17, 986–1003, 2004. Rees, D., Barnett, J. J., and Labitzke, K. (Eds.): COSPAR International reference atmosphere: 1986 Part II: Middle Atmosphere Models, Pergamon Press, Oxford, UK, 519 pp., 1990. She, C.-Y.: Spectral structure of laser light scattering revisited: bandwidths of nonresonant scattering lidars, Appl. Opt., 40, 4875–4884, 2001. Sica, R. J., Zylawy, Z. A., and Argall, P. S.: Ozone corrections for Rayleigh-scatter temperature determinations in the Middle Atmosphere, J. Atmos. Ocean. Tech., 18, 1223–1228, 2001. Singh, U. N., Keckhut, P., McGee, T. J., Gross, M. R., Hauchecorne, A., Fishbein, E. F., Waters, J. W., Gille, J. C. Roche, A. E., and Russell, J. M. III: Stratospheric temperature measurements by two collocated NDSC lidars during UARS validation campaign, J. Geophys. Res., 101(D6), 10287–10297, 1996. Smit, H. G. J and Kley, D.: JOSIE: The 1996 WMO International intercomparison of ozonesondes under quasi flight conditions in the environmental simulation chamber at Jülich, WMO GAW report No 130, WMO-TD No 926, World Meteorological Organization, Geneva, (available from http://www.fz-juelich.de/icg/icg-2/josie/1996/), 108 pp., 1998. Steinbrecht, W., Rothe, K. W., and Walther, H.: Lidar setup for daytime and nighttime probing of stratospheric ozone and measurements in polar and equatorial regions, Appl. Opt., 28, 3616–3624, 1989. Steinbrecht, W.: Lidar measurements of ozone, aerosol, and temperature, PhD thesis, York University, Toronto, Canada, 250 pp., 1994. Steinbrecht, W. and Carswell, A. I.: Evaluation of the effects of Mount Pinatubo aerosol on differential absorption lidar measurements of stratospheric ozone, J. Geophys. Res., 100(D1), 1215–1234, 1995. Steinbrecht, W., Winkler, P., and Claude, H.: Ozon- und Temperaturmessungen mittels Lidar am Hohenpeißenberg. Rep No. 200, Deutscher Wetterdienst, Offenbach, Germany, available at: http://www.dwd.de/bvbw/generator/Sites/DWDWWW/Content/Forschung/FEHP/MOHP/DL/PUBLIKATION/o__dwd200__de__pdf, 89 pp.1997. Steinbrecht, W., Schwarz, R., and Claude, H.: New Pump Correction for the Brewer-Mast Ozone Sonde: Determination from Experiment and Instrument Intercomparisons, J. Atmos. Ocean. Tech., 15, 144–156, 1998. % %Steinbrecht, W., et al.: Results of the 1998 Ny-Alesund Ozone %Monitoring Intercomparison, J Geophys Res., 104(D23), 30,515-30,524, 1999. Steinbrecht W., Claude, H., Schönenborn, F., McDermid, I.S., Leblanc, T., Godin, S., Song, T., Swart, D. P. J., Meijer, Y. J., Bodeker, G. E., Connor, J., Kämpfer, N., Hocke, K., Calisesi, Y., Schneider, N., de la Noë, J., Parrish, A. D., Boyd, I. S., Brühl, C., Steil, B., Giorgetta, M. A., Manzini, E., Thomason, L. W., Zawodny, J. M., McCormick, M. P., Russell III, J. M., Bhartia, P. K., Stolarski, R. S., and Hollandsworth-Frith, S. M.: Long-term evolution of upper stratospheric ozone at selected stations of the Network for the Detection of Stratospheric Change (NDSC), J Geophys Res., 111, D10308, doi:10.1029/2005JD006454, 2006. Steinbrecht W., Claude, H., Schönenborn, F., Leiterer, U., Dier, H., and Lanzinger, E.: Pressure and Temperature Differences between Vaisala RS80 and RS92 Radiosonde-Systems J. Atmos. Ocean. Tech., 25, 909–927, doi:10.1175/2007JTECHA999.1, 2008. % %Terao, Y., and Logan, J.A.: Consistency of time series and trends of %stratospheric ozone as seen by ozonesonde, SAGE II, HALOE, and SBUV(/2), %J. Geophys. Res., 112, D06310, doi:10.1029/2006JD007667, 2007. Tsou, J. J., Connor, B. J., Parrish, A., Pierce, R. B., Boyd, I. S., Bodeker, G. E., Chu, W. P., Russell III, J.M., Swart, D. P. J., and McGee, T. J.: NDSC millimeter wave ozone observations at Lauder, New Zealand, 1992–1998: Improved methodology, validation, and variation study, J. Geophys. Res., 105(D19), 24263–24281, 2000. % %Wang, H.J., Cunnold, D.M., Thomason, L.W., Zawodny, J.M., and Bodeker, G.E.: %Assessment of SAGE version 6.1 ozone data quality, %J. Geophys. Res., 107(D23), D4691, doi:10.1029/2002JD002418, 2002. Werner J., Rothe, K. W., and Walther, H.: Monitoring of the stratospheric ozone layer by laser radar, Appl. Phys., B32, 113–118, 1983. Whiteman, D. N.: Examination of the traditional Raman lidar technique. I. Evaluating the temperature-dependent lidar equations, Appl. Opt., 42, 2571-2592, 2003. % %Wild, J.D., et al.: Comparison of %stratospheric temperatures from several lidars, using National %Meteorological Center and microwave limb sounder data as transfer %references, J Geophys Res., 100(D6), 11105–11112, 1995. Williamson, C. K. and De Young, R. J.: Method for the reduction of signal-induced noise in photomultiplier tubes, Appl. Opt., 39, 1973–1979, 2000. WGS84: Department of Defense World Geodetic System 1984, Report 8350.2, 3rd edition, US National Imagery and Mapping Agency, Bethesda, Maryland, available at: http://earth-info.nga.mil/GandG/wgs84/, 175 pp., 2000.