 |
| Titel |
Validation of MIPAS IMK/IAA temperature, water vapor, and ozone profiles with MOHAVE-2009 campaign measurements |
| VerfasserIn |
G. P. Stiller, M. Kiefer, E. Eckert, T. Clarmann, S. Kellmann, M. García-Comas, B. Funke, T. Leblanc, E. Fetzer, L. Froidevaux, M. Gomez, E. Hall, D. Hurst, A. Jordan, N. Kämpfer, A. Lambert, I. S. McDermid, T. McGee, L. Miloshevich, G. Nedoluha, W. Read, M. Schneider, M. Schwartz, C. Straub, G. Toon, L. W. Twigg, K. Walker, D. N. Whiteman |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1867-1381
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 5, no. 2 ; Nr. 5, no. 2 (2012-02-02), S.289-320 |
| Datensatznummer |
250002459
|
| Publikation (Nr.) |
 copernicus.org/amt-5-289-2012.pdf |
|
|
|
|
|
| Zusammenfassung |
| MIPAS observations of temperature, water vapor, and ozone in October 2009 as
derived with the scientific level-2 processor run by Karlsruhe Institute of
Technology (KIT), Institute for Meteorology and Climate Research (IMK) and
CSIC, Instituto de Astrofísica de Andalucía (IAA) and retrieved from version
4.67 level-1b data have been compared to co-located field campaign
observations obtained during the MOHAVE-2009 campaign at the Table Mountain
Facility near Pasadena, California in October 2009. The MIPAS measurements were validated
regarding any potential biases of the profiles, and with respect to their
precision estimates. The MOHAVE-2009
measurement campaign provided measurements of atmospheric profiles of
temperature, water vapor/relative humidity, and ozone from the ground to the
mesosphere by a suite of instruments including radiosondes, ozonesondes, frost point
hygrometers, lidars, microwave radiometers and Fourier transform infra-red (FTIR)
spectrometers. For MIPAS
temperatures (version V4O_T_204), no significant bias was detected in
the middle stratosphere; between 22 km and the tropopause MIPAS
temperatures were found to be biased low by up to 2 K, while below the tropopause, they
were found to be too high by the same amount. These findings confirm earlier
comparisons of MIPAS temperatures to ECMWF data which revealed similar
differences. Above 12 km up to 45 km, MIPAS
water vapor (version V4O_H2O_203) is well within 10% of the data of
all correlative instruments.
The well-known
dry bias of MIPAS water vapor above 50 km due to neglect of non-LTE effects
in the current retrievals has been confirmed. Some instruments indicate that
MIPAS water vapor might be biased high by 20 to 40% around 10 km (or 5 km
below the tropopause), but a consistent picture from all comparisons could
not be derived. MIPAS ozone (version V4O_O3_202) has a high bias of up
to +0.9 ppmv around 37 km which is due to a non-identified continuum like
radiance contribution. No further significant biases have been detected.
Cross-comparison to co-located observations of other satellite instruments
(Aura/MLS, ACE-FTS, AIRS) is provided as well. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|