Validation of nitric acid retrieved by the IMK-IAA processor from MIPAS/ENVISAT measurements

D. Y. Wang, M. Höpfner, G. Mengistu Tsidu, G. P. Stiller, T. Von Clarmann, H. Fischer, T. Blumenstock, N. Glatthor, U. Grabowski, F. Hase, S. Kellmann, A. Linden, M. Milz, H. Oelhaf, M. Schneider, T. Steck, G. Wetzel, M. López-Puertas, B. Funke, M. E. KoukouliH. Nakajima, T. Sugita, H. Irie, J. Urban, D. Murtagh, M. L. Santee, G. Toon, M. R. Gunson, F. W. Irion, C. D. Boone, K. Walker, P. F. Bernath

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Abstract

The Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) onboard the ENVISAT satellite provides profiles of temperature and various trace-gases from limb-viewing mid-infrared emission measurements. The stratospheric nitric acid (HNO3) from September 2002 to March 2004 was retrieved from the MIPAS observations using the science-oriented data processor developed at the Institut für Meteorologie und Klimaforschung (IMK), which is complemented by the component of non-local thermodynamic equilibrium (non-LTE) treatment from the Instituto de Astrofísica de Andalucía (IAA). The IMK-IAA research product, different from the ESA operational product, is validated in this paper by comparison with a number of reference data sets. Individual HNO3 profiles of the IMK-IAA MIPAS show good agreement with those of the balloon-borne version of MIPAS (MIPAS-B) and the infrared spectrometer MkIV, with small differences of less than 0.5 ppbv throughout the entire altitude range up to about 38km, and below 0.2 ppbv above 30 km. However, the degree of consistency is largely affected by their temporal and spatial coincidence, and differences of 1 to 2 ppbv may be observed between 22 and 26 km at high latitudes near the vortex boundary, due to large horizontal inhomogeneity of HNO3. Statistical comparisons of MIPAS IMK-IAA HNO3 VMRs with respect to those of satellite measurements of Odin/SMR, ILAS-II, ACE-FTS, as well as the MIPAS ESA product show good consistency. The mean differences are generally ±0.5 ppbv and standard deviations of the differences are of 0.5 to 1.5 ppbv. The maximum differences are 2.0 ppbv around 20 to 25 km. This gives confidence in the general reliability of MIPAS HNO3 VMR data and the other three satellite data sets.

Original languageEnglish
Pages (from-to)721-738
Number of pages18
JournalAtmospheric Chemistry and Physics
Volume7
Issue number3
Publication statusPublished - 2007

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MIPAS
nitric acid
trace gas
inhomogeneity
vortex
limb
satellite data
spectrometer
thermodynamics

All Science Journal Classification (ASJC) codes

  • Atmospheric Science

Cite this

Wang, D. Y., Höpfner, M., Tsidu, G. M., Stiller, G. P., Von Clarmann, T., Fischer, H., ... Bernath, P. F. (2007). Validation of nitric acid retrieved by the IMK-IAA processor from MIPAS/ENVISAT measurements. Atmospheric Chemistry and Physics, 7(3), 721-738.
Wang, D. Y. ; Höpfner, M. ; Tsidu, G. Mengistu ; Stiller, G. P. ; Von Clarmann, T. ; Fischer, H. ; Blumenstock, T. ; Glatthor, N. ; Grabowski, U. ; Hase, F. ; Kellmann, S. ; Linden, A. ; Milz, M. ; Oelhaf, H. ; Schneider, M. ; Steck, T. ; Wetzel, G. ; López-Puertas, M. ; Funke, B. ; Koukouli, M. E. ; Nakajima, H. ; Sugita, T. ; Irie, H. ; Urban, J. ; Murtagh, D. ; Santee, M. L. ; Toon, G. ; Gunson, M. R. ; Irion, F. W. ; Boone, C. D. ; Walker, K. ; Bernath, P. F. / Validation of nitric acid retrieved by the IMK-IAA processor from MIPAS/ENVISAT measurements. In: Atmospheric Chemistry and Physics. 2007 ; Vol. 7, No. 3. pp. 721-738.
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title = "Validation of nitric acid retrieved by the IMK-IAA processor from MIPAS/ENVISAT measurements",
abstract = "The Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) onboard the ENVISAT satellite provides profiles of temperature and various trace-gases from limb-viewing mid-infrared emission measurements. The stratospheric nitric acid (HNO3) from September 2002 to March 2004 was retrieved from the MIPAS observations using the science-oriented data processor developed at the Institut f{\"u}r Meteorologie und Klimaforschung (IMK), which is complemented by the component of non-local thermodynamic equilibrium (non-LTE) treatment from the Instituto de Astrof{\'i}sica de Andaluc{\'i}a (IAA). The IMK-IAA research product, different from the ESA operational product, is validated in this paper by comparison with a number of reference data sets. Individual HNO3 profiles of the IMK-IAA MIPAS show good agreement with those of the balloon-borne version of MIPAS (MIPAS-B) and the infrared spectrometer MkIV, with small differences of less than 0.5 ppbv throughout the entire altitude range up to about 38km, and below 0.2 ppbv above 30 km. However, the degree of consistency is largely affected by their temporal and spatial coincidence, and differences of 1 to 2 ppbv may be observed between 22 and 26 km at high latitudes near the vortex boundary, due to large horizontal inhomogeneity of HNO3. Statistical comparisons of MIPAS IMK-IAA HNO3 VMRs with respect to those of satellite measurements of Odin/SMR, ILAS-II, ACE-FTS, as well as the MIPAS ESA product show good consistency. The mean differences are generally ±0.5 ppbv and standard deviations of the differences are of 0.5 to 1.5 ppbv. The maximum differences are 2.0 ppbv around 20 to 25 km. This gives confidence in the general reliability of MIPAS HNO3 VMR data and the other three satellite data sets.",
author = "Wang, {D. Y.} and M. H{\"o}pfner and Tsidu, {G. Mengistu} and Stiller, {G. P.} and {Von Clarmann}, T. and H. Fischer and T. Blumenstock and N. Glatthor and U. Grabowski and F. Hase and S. Kellmann and A. Linden and M. Milz and H. Oelhaf and M. Schneider and T. Steck and G. Wetzel and M. L{\'o}pez-Puertas and B. Funke and Koukouli, {M. E.} and H. Nakajima and T. Sugita and H. Irie and J. Urban and D. Murtagh and Santee, {M. L.} and G. Toon and Gunson, {M. R.} and Irion, {F. W.} and Boone, {C. D.} and K. Walker and Bernath, {P. F.}",
year = "2007",
language = "English",
volume = "7",
pages = "721--738",
journal = "Atmospheric Chemistry and Physics",
issn = "1680-7316",
publisher = "European Geosciences Union",
number = "3",

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Wang, DY, Höpfner, M, Tsidu, GM, Stiller, GP, Von Clarmann, T, Fischer, H, Blumenstock, T, Glatthor, N, Grabowski, U, Hase, F, Kellmann, S, Linden, A, Milz, M, Oelhaf, H, Schneider, M, Steck, T, Wetzel, G, López-Puertas, M, Funke, B, Koukouli, ME, Nakajima, H, Sugita, T, Irie, H, Urban, J, Murtagh, D, Santee, ML, Toon, G, Gunson, MR, Irion, FW, Boone, CD, Walker, K & Bernath, PF 2007, 'Validation of nitric acid retrieved by the IMK-IAA processor from MIPAS/ENVISAT measurements', Atmospheric Chemistry and Physics, vol. 7, no. 3, pp. 721-738.

Validation of nitric acid retrieved by the IMK-IAA processor from MIPAS/ENVISAT measurements. / Wang, D. Y.; Höpfner, M.; Tsidu, G. Mengistu; Stiller, G. P.; Von Clarmann, T.; Fischer, H.; Blumenstock, T.; Glatthor, N.; Grabowski, U.; Hase, F.; Kellmann, S.; Linden, A.; Milz, M.; Oelhaf, H.; Schneider, M.; Steck, T.; Wetzel, G.; López-Puertas, M.; Funke, B.; Koukouli, M. E.; Nakajima, H.; Sugita, T.; Irie, H.; Urban, J.; Murtagh, D.; Santee, M. L.; Toon, G.; Gunson, M. R.; Irion, F. W.; Boone, C. D.; Walker, K.; Bernath, P. F.

In: Atmospheric Chemistry and Physics, Vol. 7, No. 3, 2007, p. 721-738.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Validation of nitric acid retrieved by the IMK-IAA processor from MIPAS/ENVISAT measurements

AU - Wang, D. Y.

AU - Höpfner, M.

AU - Tsidu, G. Mengistu

AU - Stiller, G. P.

AU - Von Clarmann, T.

AU - Fischer, H.

AU - Blumenstock, T.

AU - Glatthor, N.

AU - Grabowski, U.

AU - Hase, F.

AU - Kellmann, S.

AU - Linden, A.

AU - Milz, M.

AU - Oelhaf, H.

AU - Schneider, M.

AU - Steck, T.

AU - Wetzel, G.

AU - López-Puertas, M.

AU - Funke, B.

AU - Koukouli, M. E.

AU - Nakajima, H.

AU - Sugita, T.

AU - Irie, H.

AU - Urban, J.

AU - Murtagh, D.

AU - Santee, M. L.

AU - Toon, G.

AU - Gunson, M. R.

AU - Irion, F. W.

AU - Boone, C. D.

AU - Walker, K.

AU - Bernath, P. F.

PY - 2007

Y1 - 2007

N2 - The Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) onboard the ENVISAT satellite provides profiles of temperature and various trace-gases from limb-viewing mid-infrared emission measurements. The stratospheric nitric acid (HNO3) from September 2002 to March 2004 was retrieved from the MIPAS observations using the science-oriented data processor developed at the Institut für Meteorologie und Klimaforschung (IMK), which is complemented by the component of non-local thermodynamic equilibrium (non-LTE) treatment from the Instituto de Astrofísica de Andalucía (IAA). The IMK-IAA research product, different from the ESA operational product, is validated in this paper by comparison with a number of reference data sets. Individual HNO3 profiles of the IMK-IAA MIPAS show good agreement with those of the balloon-borne version of MIPAS (MIPAS-B) and the infrared spectrometer MkIV, with small differences of less than 0.5 ppbv throughout the entire altitude range up to about 38km, and below 0.2 ppbv above 30 km. However, the degree of consistency is largely affected by their temporal and spatial coincidence, and differences of 1 to 2 ppbv may be observed between 22 and 26 km at high latitudes near the vortex boundary, due to large horizontal inhomogeneity of HNO3. Statistical comparisons of MIPAS IMK-IAA HNO3 VMRs with respect to those of satellite measurements of Odin/SMR, ILAS-II, ACE-FTS, as well as the MIPAS ESA product show good consistency. The mean differences are generally ±0.5 ppbv and standard deviations of the differences are of 0.5 to 1.5 ppbv. The maximum differences are 2.0 ppbv around 20 to 25 km. This gives confidence in the general reliability of MIPAS HNO3 VMR data and the other three satellite data sets.

AB - The Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) onboard the ENVISAT satellite provides profiles of temperature and various trace-gases from limb-viewing mid-infrared emission measurements. The stratospheric nitric acid (HNO3) from September 2002 to March 2004 was retrieved from the MIPAS observations using the science-oriented data processor developed at the Institut für Meteorologie und Klimaforschung (IMK), which is complemented by the component of non-local thermodynamic equilibrium (non-LTE) treatment from the Instituto de Astrofísica de Andalucía (IAA). The IMK-IAA research product, different from the ESA operational product, is validated in this paper by comparison with a number of reference data sets. Individual HNO3 profiles of the IMK-IAA MIPAS show good agreement with those of the balloon-borne version of MIPAS (MIPAS-B) and the infrared spectrometer MkIV, with small differences of less than 0.5 ppbv throughout the entire altitude range up to about 38km, and below 0.2 ppbv above 30 km. However, the degree of consistency is largely affected by their temporal and spatial coincidence, and differences of 1 to 2 ppbv may be observed between 22 and 26 km at high latitudes near the vortex boundary, due to large horizontal inhomogeneity of HNO3. Statistical comparisons of MIPAS IMK-IAA HNO3 VMRs with respect to those of satellite measurements of Odin/SMR, ILAS-II, ACE-FTS, as well as the MIPAS ESA product show good consistency. The mean differences are generally ±0.5 ppbv and standard deviations of the differences are of 0.5 to 1.5 ppbv. The maximum differences are 2.0 ppbv around 20 to 25 km. This gives confidence in the general reliability of MIPAS HNO3 VMR data and the other three satellite data sets.

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