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| Titel |
Investigation of the Arctic upper troposphere and lower stratosphere by mm-wave and infrared limb sounding during the PremierEx campaign |
| VerfasserIn |
U. Cortesi, S. Del Bianco, B. M. Dinelli, E. Castelli, D. Gerber, H. Oelhaf, W. Woiwode |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250067507
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| Zusammenfassung |
| The candidate Earth Explorer 7 core mission PREMIER (PRocess Exploration through
Measurements of Infrared and millimetre-wave Emitted Radiation) focuses on the
exploitation of the complementary measurement capabilities of infrared and mm-wave limb
sounders to investigate transport processes and interactions between chemistry and climate in
the mid/upper troposphere and lowermost stratosphere (5-25 km height range). A field
campaign with the high altitude research aircraft M-55 Geophysica, embarking the
MARSCHALS and the MIPAS-STR instruments as simulators of the PREMIER payload in
the mm-wave and in the infrared region respectively, was carried out in the Arctic (Kiruna,
Sweden) in March 2010 (PremierEx campaign) immediately after the RECONCILE
scientific flights. A dedicated study was conducted using the datasets obtained from
MARSCHALS and MIPAS-STR limb measurements during the PremierEx flight on
March 10th, 2010. The results of mm-wave data processing for the retrieval of
Temperature, Water Vapour, O3, HNO3, N2O and CO vertical profiles are reported,
demonstrating the full capabilities of the MARSCHALS upgraded configuration
and showing the limited impact of clouds at low and high altitude in different legs
of the flight compared to the measurement performances in clear sky conditions.
Moreover, a better insight in the potential of combined use of IRLS and MWLS
observations was gained by comparing the results of individual and synergistic retrieval
processing. The comparison was performed by using different approaches to data
fusion: the (L1+L2) method, consisting in the inverse processing of MARSCHALS
spectra using Optimal Estimation with MIPAS-STR Level 2 products adopted as a
priori information and the Measurement Space Solution (mss) method, relying on
the optimal exploitation of the information obtained from infrared and mm-wave
measurements that is feasible with the innovative MSS algorithm. An overview of the study
will be provided, along with a summary of the main results and conclusions from
MARSCHALS data analysis and from investigation of infrared and mm-wave data fusion. |
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