[en] This paper presents a validation study of SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) carbon monoxide (CO) total column measurements from the Iterative Maximum Likelihood Method (IMLM) algorithm using ground-based spectrometer observations from twenty surface stations for the five year time period of 2003–2007.
Overall we find a good agreement between SCIAMACHY and ground-based observations for both mean values as well as seasonal variations.
For high-latitude Northern Hemisphere stations absolute differences between SCIAMACHY and ground-based measurements are close to or fall within the SCIAMACHY CO 2σ precision of 0.2 × 1018 molecules/cm2 (~10%) indicating that SCIAMACHY can observe CO accurately at high Northern Hemisphere latitudes.
For Northern Hemisphere mid-latitude stations the validation is complicated due to the vicinity of emission sources for almost all stations, leading to higher ground-based measurements compared to SCIAMACHY CO within its typical sampling area of 8° × 8°.
Comparisons with Northern Hemisphere mountain stations are hampered by elevation effects. After accounting for these effects, the validation provides satisfactory results.
At Southern Hemisphere mid- to high latitudes SCIAMACHY is systematically lower than the ground-based measurements for 2003 and 2004, but for 2005 and later years the differences between SCIAMACHY and ground-based measurements fall within the SCIAMACHY precision. The 2003–2004 bias is consistent with previously reported results although its origin remains under investigation.
No other systematic spatial or temporal biases could be identified based on the validation presented in this paper.
Validation results are robust with regard to the choices of the instrument-noise error filter, sampling area, and time averaging required for the validation of SCIAMACHY CO total column measurements.
Finally, our results show that the spatial coverage of the ground-based measurements available for the validation of the 2003–2007 SCIAMACHY CO columns is sub-optimal for validation purposes, and that the recent and ongoing expansion of the ground-based network by carefully selecting new locations may be very beneficial for SCIAMACHY CO and other satellite trace gas measurements validation efforts.
Disciplines :
Earth sciences & physical geography
Author, co-author :
de Laat, A. T. J.
Gloudemans, A. M. S.
Schrijver, H.
Aben, I.
Nagahama, Y.
Suzuki, K.
Mahieu, Emmanuel ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS)
van Aardenne, J. A., Dentener, F. J., Olivier, J. G. J., Klein Goldewijk, C. G. M., and Lelieveld, J.: A 1° x 1° resolution data set of historical anthropogenic trace gas emissions for the period 1890 - 1990, Global Biogeochem. Cy., 15(4), 909-928, 2001.
Barret, B., De Mazìere, M., and Mahieu, E.: Ground-based FTIR measurements of CO from the Jungfraujoch: characterisation and comparison with in situ surface and MOPITT data, Atmos. Chem. Phys., 3, 2217-2223, doi:10.5194/acp-3-2217-2003, 2003.
Bovensmann, H., Burrows, J. P., Buchwitz, M., Frerick, J., Noel, S., Rozanov, V. V., Chance, K. V., and Goede, A. H. P.: SCIAMACHY - Mission Objectives and Measurement Modes, J. Atmos. Sci., 56, 127-150, 1999.
Borsdorff, T. and R. Sussmann: On seasonality of stratomesospheric CO above midlatitudes: new insight from solar FTIR spectrometry at Zugspitze and Garmisch, Geophys. Res. Lett., 36, L21804, doi:10.1029/2009GL040056, 2009.
Bregman, B., Segers, A., Krol, M., Meijer, E., and van Velthoven, P.: On the use of mass-conserving wind fields in chemistry-transport models, Atmos. Chem. Phys., 3, 447-457, doi:10.5194/acp-3-447-2003, 2003.
Buchwitz, M., de Beek, R., Bramstedt, K., Nöel, S., Bovensmann, H., and Burrows, J. P.: Global carbon monoxide as retrieved from SCIAMACHY by WFM-DOAS, Atmos. Chem. Phys., 4, 1945- 1960, doi:10.5194/acp-4-1945-2004, 2004.
Dentener, F., van Weele, M., Krol, M., Houweling, S., and van Velthoven, P.: Trends and inter-annual variability of methane emissions derived from 1979-1993 global CTM simulations, Atmos. Chem. Phys., 3, 73-88, doi:10.5194/acp-3-73-2003, 2003.
Deutscher, N. M., Griffith, D. W. T., Bryant, G. W., Wennberg, P. O., Toon, G. C., Washenfelder, R. A., Keppel-Aleks, G., Wunch, D., Yavin, Y., Allen, N. T., Blavier, J.-F., Jiḿenez, R., Daube, B. C., Bright, A. V., Matross, D. M., Wofsy, S. C., and Park, S.: Total column CO2 measurements at Darwin, Australia - site description and calibration against in situ aircraft profiles, Atmos. Meas. Tech., 3, 947-958, doi:10.5194/amt-3-947-2010, 2010.
Dianov-Klokov, V. I.: Spectroscopic studies of atmospheric pollution over large cities, Izvestia AN SSSR, Fizika atmosfery i okeana, 20, 883-900, 1984 (in Russian).
Dianov-Klokov, V. I., Yurganov, L. N., Grechko, E. I., and Dzhola, A. V.: Spectroscopic measurements of atmospheric carbon monoxide and methane 1: Latitudinal distribution, J. Atmos. Chem., 8, 139-151, 1989.
Dils, B., De Mazìere, M., Müller, J. F., Blumenstock, T., Buchwitz, M., de Beek, R., Demoulin, P., Duchatelet, P., Fast, H., Frankenberg, C., Gloudemans, A., Griffith, D., Jones, N., Kerzenmacher, T., Kramer, I., Mahieu, E., Mellqvist, J., Mittermeier, R. L., Notholt, J., Rinsland, C. P., Schrijver, H., Smale, D., Strandberg, A., Straume, A. G., Stremme,W., Strong, K., Sussmann, R., Taylor, J., van den Broek, M., Velazco, V., Wagner, T., Warneke, T., Wiacek, A., andWood, S.: Comparisons between SCIAMACHY and ground-based FTIR data for total columns of CO, CH4, CO2 and N2O, Atmos. Chem. Phys., 6, 1953-1976, doi:10.5194/acp-6-1953-2006, 2006.
Duflot, V., Baray, J. L., Dils, B., De Mazìere, M., Attíe, J. L., Vanhaelewyn, G., Senten, C., Vigouroux, C., Clain, G., and Delmas, R.: Analysis of the origin of the distribution of CO in the subtropical southern Indian Ocean, J. Geophys. Res., in press, doi:10.1029/2010JD013994, 2010.
Gloudemans, A. M. S., Krol, M. C., Meirink, J. F., de Laat, A. T. J., van der Werf, G. R., Schrijver, H., van den Broek, M. M. P., and Aben, I.: Evidence for long-range transport of carbon monoxide in the Southern Hemisphere from SCIAMACHY observations, Geophys. Res. Lett., 33, L16807, doi:10.1029/ 2006GL026804, 2006.
Gloudemans, A. M. S., Schrijver, H., Hasekamp, O. P., and Aben, I.: Error analysis for CO and CH4 total column retrievals from SCIAMACHY 2.3 μm spectra, Atmos. Chem. Phys., 8, 3999-4017, doi:10.5194/acp-8-3999-2008, 2008.
Gloudemans, A. M. S., de Laat, A. T. J., Schrijver, H., Aben, I., Meirink, J. F., and van der Werf, G. R.: SCIAMACHY CO over land and oceans: 2003-2007 interannual variability, Atmos. Chem. Phys., 9, 3799-3813, doi:10.5194/acp-9-3799-2009, 2009.
Houweling, S., Dentener, F., and Lelieveld, J.: The impact of nonmethane hydrocarbon compounds on tropospheric photochemistry, J. Geophys., Res., 103, 10673-10696, 1998.
Koike, M., Jones, N. B., Palmer, P. I., Matsui, H., Zhao, Y., Kondo, Y., Matsumi, Y., and Tanimoto, H.: Seasonal variation of carbon monoxide in northern Japan: fourier transform IR measurements and source-labeled model calculations, J. Geophys. Res., 111, D15306, doi:10.1029/2005JD006643, 2006.
de Laat, A. T. J., Gloudemans, A. M. S., Schrijver, H., van den Broek, M. M. P., Meirink, J. F., Aben, I., and Krol, M.: Quantitative analysis of SCIAMACHY carbon monoxide total column measurements, Geophys. Res. Lett., 33, L07807, doi:10.1029/2005GL025530, 2006.
de Laat, A. T. J., Gloudemans, A. M. S., Aben, I., Krol, M., van der Werf, G., Meirink, J. F., and Schrijver, H.: SCIAMACHY Carbon Monoxide total columns: Statistical evaluation and comparison with CTM results, J. Geophys. Res., 112, D12310, doi:10.1029/2006JD008256, 2007.
de Laat, A. T. J., Gloudemans, A. M. S., Aben, I., and Schrijver, H.: Global evaluation of SCIAMACHY and MOPITT carbon monoxide column differences for 2004-2005, J. Geophys. Res., 115, doi:10.1029/2009JD012698, 2010.
Makarova, M. V., Poberovskii, A. V., and Timofeev, Y. M.: Temporal Variability of Total Atmospheric Carbon Monoxide over St. Petersburg. Izvestiya, Atm. Ocean Phys., 40, 3, 313-322, 2004.
Meirink, J. F., Eskes, H. J., and Goede, A. P. H.: Sensitivity analysis of methane emissions derived from SCIAMACHY observations through inverse modelling, Atmos. Chem. Phys., 6, 1275-1292, doi:10.5194/acp-6-1275-2006, 2006.
Mironenkov, A. V., Poberovskii, A. V., and Timofeev, Y. M.: Interpretation of Infrared Solar Spectra for Quantification of the Column Content of Atmospheric Gases. Izvestiya, Atm. Ocean Phys., 32(2), 191-198, 1996.
Nagahama, Y. and Suzuki, K.: The influence of forest fires on CO, HCN, C2H6 and C2H2 over Northern Japan measured by infrared solar spectroscopy, Atmos. Env., 41, 9570-9579, 2007.
Paton-Walsh, C., Jones, N. B., Wilson, S. R., Haverd, V., Meier, A., Griffith, D. W. T., and Rinsland, C. P.: Measurements of trace gas emissions from Australian forest fires and correlations with coincident measurements of aerosol optical depth, J. Geophys. Res., 110, doi:10.1029/2005JD006202, 2005.
Paton-Walsh, C., Deutscher, N. M., Griffith, D. W. T., Forgan, B. W., Wilson, S. R., Jones, N. B., and Edwards, D. P.: Trace gas emissions from Savanna Fires in Northern Australia, J. Geophys. Res., 115, doi:10.1029/ 2009JD013309, 2010.
Senten, C., De Mazìere, M., Dils, B., Hermans, C., Kruglanski, M., Neefs, E., Scolas, F., Vandaele, A. C., Vanhaelewyn, G., Vigouroux, C., Carleer, M., Coheur, P. F., Fally, S., Barret, B., Baray, J. L., Delmas, R., Leveau, J., Metzger, J. M., Mahieu, E., Boone, C., Walker, K. A., Bernath, P. F., and Strong, K.: Technical Note: New ground-based FTIR measurements at Ile de La Runion: observations, error analysis, and comparisons with independent data, Atmos. Chem. Phys., 8, 3483-3508, doi:10.5194/acp-8-3483-2008, 2008.
Shindell, D. T., Faluvegi, G., Stevenson, D. S., Krol, M. C., Emmons, L. K., Lamarque, J.-F., Ṕetron, G., Dentener, F. J., Ellingsen, K., Schultz, M. G., Wild, O., Amann, M., Atherton, C. S., Bergmann, D. J., Bey, I., Butler, T., Cofala, J., Collins, W. J., Derwent, R. G., Doherty, R. M., Drevet, J., Eskes, H. J., Fiore, A. M., Gauss, M., Hauglustaine, D. A., Horowitz, L. W., Isaksen, I. S. A., Lawrence, M. G., Montanaro, V., Müller, J.-F., Pitari, G., Prather, M. J., Pyle, J. A., Rast, S., Rodriguez, J. M., Sanderson, M. G., Savage, N. H., Strahan, S. E., Sudo, K., Szopa, S., Unger, N., van Noije, T. P. C., and Zeng, G.: Multimodel simulations of carbon monoxide: comparison with observations and projected near-future changes, J. Geophys. Res., 111, D19306, doi:10.1029/2006JD007100, 2006.
Sussmann, R. and Buchwitz, M.: Initial validation of ENVISAT/ SCIAMACHY columnar CO by FTIR profile retrievals at the Ground-Truthing Station Zugspitze, Atmos. Chem. Phys., 5, 1497-1503, doi:10.5194/acp-5-1497-2005, 2005.
Taylor, K. E.: Summarizing multiple aspects of model performance in single diagram, J. Geophys. Res., 106, D7, 7183-7192, 2001.
Toon, G. C., Blavier, J. F.,Washenfelder, R. A.,Wunch, D., Keppel-Aleks, G., Wennberg, P. O., Connor, B. J., Sherlock, V., Griffith, D. W. T., Deutscher, N. M., and Notholt, J.: The Total Carbon Column Observing Network (TCCON), paper presented at Proceedings of the Optical Society of America Fourier Transform Spectroscopy Meeting, Vancouver, April 2009.
Warneke, T., de Beek, R., Buchwitz, M., Notholt, J., Schulz, A., Velazco, V., and Schrems, O.: Shipborne solar absorption measurements of CO2, CH4, N2O and CO and comparison with SCIAMACHY WFM-DOAS retrievals, Atmos. Chem. Phys., 5, 2029-2034, doi:10.5194/acp-5-2029-2005, 2005.
van der Werf, G. R., Randerson, J. T., Giglio, L., Collatz, G. J., Kasibhatla, P. S., and Arellano Jr., A. F.: Interannual variability in global biomass burning emissions from 1997 to 2004, Atmos. Chem. Phys., 6, 3423-3441, doi:10.5194/acp-6-3423-2006, 2006.
Yurganov, L. N., Duchatelet, P., Dzhola, A. V., Edwards, D. P., Hase, F., Kramer, I., Mahieu, E., Mellqvist, J., Notholt, J., Novelli, P. C., Rockmann, A., Scheel, H. E., Schneider, M., Schulz, A., Strandberg, A., Sussmann, R., Tanimoto, H., Velazco, V., Drummond, J. R., and Gille, J. C.: Increased Northern Hemispheric carbon monoxide burden in the troposphere in 2002 and 2003 detected from the ground and from space, Atmos. Chem. Phys., 5, 563-573, doi:10.5194/acp-5-563-2005, 2005.
Yurganov, L., McMillan, W. W., Dzhola, A. V., Grechko, E. I., Jones, N. B., and van der Werf, G.: Global AIRS and MOPITT CO measurements: Validation comparison, and links to biomass burning variations and carbon cycle, J. Geophys. Res., 113, doi:10.1029/2007JD009229, 2008.
Yurganov, L., McMillan, W., Grechko, E., and Dzhola, A.: Analysis of global and regional CO burdens measured from space between 2000 and 2009 and validated by ground-based solar tracking spectrometers, Atmos. Chem. Phys., 10, 3479-3494, doi:10.5194/acp-10-3479-2010, 2010.