Cross-validation of MIPAS/ENVISAT and GPS-RO/CHAMP temperature profiles

Ding Yi Wang, Gabriele P. Stiller, Thomas von Clarmann, Herbert Fischer, Manuel López-Puertas, Bernd Funke, Norbert Glatthor, Udo Grabowski, Michael Höpfner, Sylvia Kellmann, Michael Kiefer, Andrea Linden, Gizaw Mengistu Tsidu, Mathias Milz, Tilman Steck, Jonathan H. Jiang, Chi O. Ao, Gloria Manney, Klemens Hocke, Dong L. Wu & 3 others Larry J. Romans, Jens Wickert, Torsten Schmidt

    Research output: Contribution to journalArticle

    22 Citations (Scopus)

    Abstract

    The Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) on board the ENVISAT and the Global Positioning System (GPS) receiver on the Challenging Mini-Satellite Payload (CHAMP) provide temperature profiles by limb-viewing midinfrared emission and radio occultation (RO) measurements, respectively. The MIPAS temperatures retrieved at the Institut für Meteorologie und Klimaforschung (IMK) are compared with the GPS-RO/CHAMP observations derived at Jet Propulsion Laboratory (JPL) and GeoForschungsZentrum (GFZ) Potsdam. The three data sets show generally good agreement. The global mean differences averaged between 8 and 30 km in 14 days of September/October 2002 are -0.44 ± 0.02 K and 0.07 ± 0.02 K for MIPAS/GPS-RO JPL and GFZ comparisons, respectively. The MIPAS global mean temperatures below 25 km are slightly lower than those of GPS-RO JPL and GFZ by less than 1 K and 0.2 K, respectiVely. Above 25 km, the MIPAS temperatures are higher than the JPL and GFZ data, in particular near both poles and the equator, with maxima of I K for JPL and 1.5 K for GFZ at 30 km. The standard deviations are ∼2-4 K. Possible explanations for the observed differences include (1) effect of spatial and temporal mismatch between the correlative measurements on the observed standard deviations, in particular in regions and episodes of enhanced wave activity; (2) a negative bias in GPS-RO/CHAMP temperatures in regions of increased humidity; (3) a mapping of initialization temperature profiles on GPS-RO /CHAMP retrievals at altitudes where low refraction contains no information on air density; and (4) measurement errors of both instruments, particularly the errors due to insufficient knowledge of the instrument line shape and spectroscopy in current MIPAS retrievals.

    Original languageEnglish
    JournalJournal of Geophysical Research D: Atmospheres
    Volume109
    Issue number19
    DOIs
    Publication statusPublished - Oct 16 2004

    Fingerprint

    MIPAS
    atmospheric sounding
    radio occultation
    Michelson interferometers
    global positioning systems
    Global Positioning System
    jet propulsion
    payloads
    temperature profile
    temperature profiles
    radio
    Global positioning system
    GPS
    Propulsion
    Satellites
    payload retrieval (STS)
    Temperature
    standard deviation
    temperature
    low altitude

    All Science Journal Classification (ASJC) codes

    • Geophysics
    • Oceanography
    • Forestry
    • Ecology
    • Aquatic Science
    • Water Science and Technology
    • Soil Science
    • Geochemistry and Petrology
    • Earth-Surface Processes
    • Atmospheric Science
    • Earth and Planetary Sciences (miscellaneous)
    • Space and Planetary Science
    • Palaeontology

    Cite this

    Wang, D. Y., Stiller, G. P., von Clarmann, T., Fischer, H., López-Puertas, M., Funke, B., ... Schmidt, T. (2004). Cross-validation of MIPAS/ENVISAT and GPS-RO/CHAMP temperature profiles. Journal of Geophysical Research D: Atmospheres, 109(19). https://doi.org/10.1029/2004JD004963
    Wang, Ding Yi ; Stiller, Gabriele P. ; von Clarmann, Thomas ; Fischer, Herbert ; López-Puertas, Manuel ; Funke, Bernd ; Glatthor, Norbert ; Grabowski, Udo ; Höpfner, Michael ; Kellmann, Sylvia ; Kiefer, Michael ; Linden, Andrea ; Tsidu, Gizaw Mengistu ; Milz, Mathias ; Steck, Tilman ; Jiang, Jonathan H. ; Ao, Chi O. ; Manney, Gloria ; Hocke, Klemens ; Wu, Dong L. ; Romans, Larry J. ; Wickert, Jens ; Schmidt, Torsten. / Cross-validation of MIPAS/ENVISAT and GPS-RO/CHAMP temperature profiles. In: Journal of Geophysical Research D: Atmospheres. 2004 ; Vol. 109, No. 19.
    @article{7102872994714a5d8bb088612db89635,
    title = "Cross-validation of MIPAS/ENVISAT and GPS-RO/CHAMP temperature profiles",
    abstract = "The Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) on board the ENVISAT and the Global Positioning System (GPS) receiver on the Challenging Mini-Satellite Payload (CHAMP) provide temperature profiles by limb-viewing midinfrared emission and radio occultation (RO) measurements, respectively. The MIPAS temperatures retrieved at the Institut f{\"u}r Meteorologie und Klimaforschung (IMK) are compared with the GPS-RO/CHAMP observations derived at Jet Propulsion Laboratory (JPL) and GeoForschungsZentrum (GFZ) Potsdam. The three data sets show generally good agreement. The global mean differences averaged between 8 and 30 km in 14 days of September/October 2002 are -0.44 ± 0.02 K and 0.07 ± 0.02 K for MIPAS/GPS-RO JPL and GFZ comparisons, respectively. The MIPAS global mean temperatures below 25 km are slightly lower than those of GPS-RO JPL and GFZ by less than 1 K and 0.2 K, respectiVely. Above 25 km, the MIPAS temperatures are higher than the JPL and GFZ data, in particular near both poles and the equator, with maxima of I K for JPL and 1.5 K for GFZ at 30 km. The standard deviations are ∼2-4 K. Possible explanations for the observed differences include (1) effect of spatial and temporal mismatch between the correlative measurements on the observed standard deviations, in particular in regions and episodes of enhanced wave activity; (2) a negative bias in GPS-RO/CHAMP temperatures in regions of increased humidity; (3) a mapping of initialization temperature profiles on GPS-RO /CHAMP retrievals at altitudes where low refraction contains no information on air density; and (4) measurement errors of both instruments, particularly the errors due to insufficient knowledge of the instrument line shape and spectroscopy in current MIPAS retrievals.",
    author = "Wang, {Ding Yi} and Stiller, {Gabriele P.} and {von Clarmann}, Thomas and Herbert Fischer and Manuel L{\'o}pez-Puertas and Bernd Funke and Norbert Glatthor and Udo Grabowski and Michael H{\"o}pfner and Sylvia Kellmann and Michael Kiefer and Andrea Linden and Tsidu, {Gizaw Mengistu} and Mathias Milz and Tilman Steck and Jiang, {Jonathan H.} and Ao, {Chi O.} and Gloria Manney and Klemens Hocke and Wu, {Dong L.} and Romans, {Larry J.} and Jens Wickert and Torsten Schmidt",
    year = "2004",
    month = "10",
    day = "16",
    doi = "10.1029/2004JD004963",
    language = "English",
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    journal = "Journal of Geophysical Research",
    issn = "0148-0227",
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    Wang, DY, Stiller, GP, von Clarmann, T, Fischer, H, López-Puertas, M, Funke, B, Glatthor, N, Grabowski, U, Höpfner, M, Kellmann, S, Kiefer, M, Linden, A, Tsidu, GM, Milz, M, Steck, T, Jiang, JH, Ao, CO, Manney, G, Hocke, K, Wu, DL, Romans, LJ, Wickert, J & Schmidt, T 2004, 'Cross-validation of MIPAS/ENVISAT and GPS-RO/CHAMP temperature profiles', Journal of Geophysical Research D: Atmospheres, vol. 109, no. 19. https://doi.org/10.1029/2004JD004963

    Cross-validation of MIPAS/ENVISAT and GPS-RO/CHAMP temperature profiles. / Wang, Ding Yi; Stiller, Gabriele P.; von Clarmann, Thomas; Fischer, Herbert; López-Puertas, Manuel; Funke, Bernd; Glatthor, Norbert; Grabowski, Udo; Höpfner, Michael; Kellmann, Sylvia; Kiefer, Michael; Linden, Andrea; Tsidu, Gizaw Mengistu; Milz, Mathias; Steck, Tilman; Jiang, Jonathan H.; Ao, Chi O.; Manney, Gloria; Hocke, Klemens; Wu, Dong L.; Romans, Larry J.; Wickert, Jens; Schmidt, Torsten.

    In: Journal of Geophysical Research D: Atmospheres, Vol. 109, No. 19, 16.10.2004.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Cross-validation of MIPAS/ENVISAT and GPS-RO/CHAMP temperature profiles

    AU - Wang, Ding Yi

    AU - Stiller, Gabriele P.

    AU - von Clarmann, Thomas

    AU - Fischer, Herbert

    AU - López-Puertas, Manuel

    AU - Funke, Bernd

    AU - Glatthor, Norbert

    AU - Grabowski, Udo

    AU - Höpfner, Michael

    AU - Kellmann, Sylvia

    AU - Kiefer, Michael

    AU - Linden, Andrea

    AU - Tsidu, Gizaw Mengistu

    AU - Milz, Mathias

    AU - Steck, Tilman

    AU - Jiang, Jonathan H.

    AU - Ao, Chi O.

    AU - Manney, Gloria

    AU - Hocke, Klemens

    AU - Wu, Dong L.

    AU - Romans, Larry J.

    AU - Wickert, Jens

    AU - Schmidt, Torsten

    PY - 2004/10/16

    Y1 - 2004/10/16

    N2 - The Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) on board the ENVISAT and the Global Positioning System (GPS) receiver on the Challenging Mini-Satellite Payload (CHAMP) provide temperature profiles by limb-viewing midinfrared emission and radio occultation (RO) measurements, respectively. The MIPAS temperatures retrieved at the Institut für Meteorologie und Klimaforschung (IMK) are compared with the GPS-RO/CHAMP observations derived at Jet Propulsion Laboratory (JPL) and GeoForschungsZentrum (GFZ) Potsdam. The three data sets show generally good agreement. The global mean differences averaged between 8 and 30 km in 14 days of September/October 2002 are -0.44 ± 0.02 K and 0.07 ± 0.02 K for MIPAS/GPS-RO JPL and GFZ comparisons, respectively. The MIPAS global mean temperatures below 25 km are slightly lower than those of GPS-RO JPL and GFZ by less than 1 K and 0.2 K, respectiVely. Above 25 km, the MIPAS temperatures are higher than the JPL and GFZ data, in particular near both poles and the equator, with maxima of I K for JPL and 1.5 K for GFZ at 30 km. The standard deviations are ∼2-4 K. Possible explanations for the observed differences include (1) effect of spatial and temporal mismatch between the correlative measurements on the observed standard deviations, in particular in regions and episodes of enhanced wave activity; (2) a negative bias in GPS-RO/CHAMP temperatures in regions of increased humidity; (3) a mapping of initialization temperature profiles on GPS-RO /CHAMP retrievals at altitudes where low refraction contains no information on air density; and (4) measurement errors of both instruments, particularly the errors due to insufficient knowledge of the instrument line shape and spectroscopy in current MIPAS retrievals.

    AB - The Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) on board the ENVISAT and the Global Positioning System (GPS) receiver on the Challenging Mini-Satellite Payload (CHAMP) provide temperature profiles by limb-viewing midinfrared emission and radio occultation (RO) measurements, respectively. The MIPAS temperatures retrieved at the Institut für Meteorologie und Klimaforschung (IMK) are compared with the GPS-RO/CHAMP observations derived at Jet Propulsion Laboratory (JPL) and GeoForschungsZentrum (GFZ) Potsdam. The three data sets show generally good agreement. The global mean differences averaged between 8 and 30 km in 14 days of September/October 2002 are -0.44 ± 0.02 K and 0.07 ± 0.02 K for MIPAS/GPS-RO JPL and GFZ comparisons, respectively. The MIPAS global mean temperatures below 25 km are slightly lower than those of GPS-RO JPL and GFZ by less than 1 K and 0.2 K, respectiVely. Above 25 km, the MIPAS temperatures are higher than the JPL and GFZ data, in particular near both poles and the equator, with maxima of I K for JPL and 1.5 K for GFZ at 30 km. The standard deviations are ∼2-4 K. Possible explanations for the observed differences include (1) effect of spatial and temporal mismatch between the correlative measurements on the observed standard deviations, in particular in regions and episodes of enhanced wave activity; (2) a negative bias in GPS-RO/CHAMP temperatures in regions of increased humidity; (3) a mapping of initialization temperature profiles on GPS-RO /CHAMP retrievals at altitudes where low refraction contains no information on air density; and (4) measurement errors of both instruments, particularly the errors due to insufficient knowledge of the instrument line shape and spectroscopy in current MIPAS retrievals.

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    Wang DY, Stiller GP, von Clarmann T, Fischer H, López-Puertas M, Funke B et al. Cross-validation of MIPAS/ENVISAT and GPS-RO/CHAMP temperature profiles. Journal of Geophysical Research D: Atmospheres. 2004 Oct 16;109(19). https://doi.org/10.1029/2004JD004963