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  Validation of water vapour profiles (version 13) retrieved by the IMK/IAA scientific retrieval processor based on full resolution spectra measured by MIPAS on board Envisat

Milz, M., Clarmann, T. V., Bernath, P., Boone, C., Buehler, S. A., Chauhan, S., et al. (2009). Validation of water vapour profiles (version 13) retrieved by the IMK/IAA scientific retrieval processor based on full resolution spectra measured by MIPAS on board Envisat. Atmospheric Measurement Techniques, 2(2), 379-399. doi:10.5194/amt-2-379-2009.

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Milz, M., Author
Clarmann, T. V., Author
Bernath, P., Author
Boone, C., Author
Buehler, S. A., Author
Chauhan, S., Author
Deuber, B., Author
Feist, D. G.1, Author           
Funke, B., Author
Glatthor, N., Author
Grabowski, U., Author
Griesfeller, A., Author
Haefele, A., Author
Höpfner, M., Author
Kämpfer, N., Author
Kellmann, S., Author
Linden, A., Author
Müller, S., Author
Nakajima, H., Author
Oelhaf, H., Author
Remsberg, E., AuthorRohs, S., AuthorRussell Iii, J. M., AuthorSchiller, C., AuthorStiller, G. P., AuthorSugita, T., AuthorTanaka, T., AuthorVömel, H., AuthorWalker, K., AuthorWetzel, G., AuthorYokota, T., AuthorYushkov, V., AuthorZhang, G., Author more..
Affiliations:
1Atmospheric Remote Sensing Group, Dr. D. Feist, Department Biogeochemical Systems, Prof. M. Heimann, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497783              

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 Abstract: Vertical profiles of stratospheric water vapour measured by the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) with the full resolution mode between September 2002 and March 2004 and retrieved with the IMK/IAA scientific retrieval processor were compared to a number of independent measurements in order to estimate the bias and to validate the existing precision estimates of the MIPAS data. The estimated precision for MIPAS is 5 to 10% in the stratosphere, depending on altitude, latitude, and season. The independent instruments were: the Halogen Occultation Experiment (HALOE), the Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS), the Improved Limb Atmospheric Spectrometer-II (ILAS-II), the Polar Ozone and Aerosol Measurement (POAM III) instrument, the Middle Atmospheric Water Vapour Radiometer (MIAWARA), the Michelson Interferometer for Passive Atmospheric Sounding, balloon-borne version (MIPAS-B), the Airborne Microwave Stratospheric Observing System (AMSOS), the Fluorescent Stratospheric Hygrometer for Balloon (FLASH-B), the NOAA frostpoint hygrometer, and the Fast In Situ Hygrometer (FISH). For the in-situ measurements and the ground based, air-and balloon borne remote sensing instruments, the measurements are restricted to central and northern Europe. The comparisons to satellite-borne instruments are predominantly at mid-to high latitudes on both hemispheres. In the stratosphere there is no clear indication of a bias in MIPAS data, because the independent measurements in some cases are drier and in some cases are moister than the MIPAS measurements. Compared to the infrared measurements of MIPAS, measurements in the ultraviolet and visible have a tendency to be high, whereas microwave measurements have a tendency to be low. The results of chi(2)- based precision validation are somewhat controversial among the comparison estimates. However, for comparison instruments whose error budget also includes errors due to uncertainties in spectrally interfering species and where good coincidences were found, the chi(2) values found are in the expected range or even below. This suggests that there is no evidence of systematically underestimated MIPAS random errors.

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 Dates: 2009
 Publication Status: Issued
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 Identifiers: Other: BGC1258
DOI: 10.5194/amt-2-379-2009
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Title: Atmospheric Measurement Techniques
Source Genre: Journal
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Publ. Info: Göttingen : European Geosciences Union, Copernicus
Pages: - Volume / Issue: 2 (2) Sequence Number: - Start / End Page: 379 - 399 Identifier: CoNE: https://pure.mpg.de/cone/journals/resource/1867-1381
ISSN: 1867-8610