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

D. Y. Wang; M. H. Hoepfner; 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. Lopez-Puertas; B. Funke; M. E. Koukouli; H. 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

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

D. Y. Wang, M. H. Hoepfner, 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. Lopez-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

Chemistry

Research output: Contribution to journal › Article › peer-review

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 fur Meteorologie und Klimaforschung (IMK), which is complemented by the component of non-local thermodynamic equilibrium (non-LTE) treatment from the Instituto de Astrofisica de Andalucia (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 38 km, 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 language	English
Pages (from-to)	721-738
Number of pages	18
Journal	Atmospheric Chemistry and Physics
Volume	7
Publication status	Published - 14 Feb 2007

Keywords

LIMB ATMOSPHERIC SPECTROMETER
MOLECULAR SPECTROSCOPIC DATABASE
ATMOS EXPERIMENT
MICHELSON INTERFEROMETER
EMISSION-SPECTRA
HNO3
STRATOSPHERE
MIPAS
SPACE
ALGORITHM

Cite this

Wang, D. Y., Hoepfner, M. H., Tsidu, G. M., 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., Lopez-Puertas, M., Funke, B., ... Bernath, P. F. (2007). Validation of nitric acid retrieved by the IMK-IAA processor from MIPAS/ENVISAT measurements. Atmospheric Chemistry and Physics, 7, 721-738.

@article{22a2ad67f09e49c49b0c2e9aa7e4717e,

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 fur Meteorologie und Klimaforschung (IMK), which is complemented by the component of non-local thermodynamic equilibrium (non-LTE) treatment from the Instituto de Astrofisica de Andalucia (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 38 km, 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.",

keywords = "LIMB ATMOSPHERIC SPECTROMETER, MOLECULAR SPECTROSCOPIC DATABASE, ATMOS EXPERIMENT, MICHELSON INTERFEROMETER, EMISSION-SPECTRA, HNO3, STRATOSPHERE, MIPAS, SPACE, ALGORITHM",

author = "Wang, {D. Y.} and Hoepfner, {M. H.} 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. Lopez-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",

month = feb,

day = "14",

language = "English",

volume = "7",

pages = "721--738",

journal = "Atmospheric Chemistry and Physics",

issn = "1680-7316",

publisher = "Copernicus Publications",

}

Wang, DY, Hoepfner, MH, 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, Lopez-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, pp. 721-738.

TY - JOUR

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

AU - Wang, D. Y.

AU - Hoepfner, M. H.

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 - Lopez-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 - 2007/2/14

Y1 - 2007/2/14

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 fur Meteorologie und Klimaforschung (IMK), which is complemented by the component of non-local thermodynamic equilibrium (non-LTE) treatment from the Instituto de Astrofisica de Andalucia (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 38 km, 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 fur Meteorologie und Klimaforschung (IMK), which is complemented by the component of non-local thermodynamic equilibrium (non-LTE) treatment from the Instituto de Astrofisica de Andalucia (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 38 km, 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.

KW - LIMB ATMOSPHERIC SPECTROMETER

KW - MOLECULAR SPECTROSCOPIC DATABASE

KW - ATMOS EXPERIMENT

KW - MICHELSON INTERFEROMETER

KW - EMISSION-SPECTRA

KW - HNO3

KW - STRATOSPHERE

KW - MIPAS

KW - SPACE

KW - ALGORITHM

M3 - Article

SN - 1680-7316

VL - 7

SP - 721

EP - 738

JO - Atmospheric Chemistry and Physics

JF - Atmospheric Chemistry and Physics

ER -