Inversion problems and data assimilation

Institute for Applied Physics "Nello Carrara"
Italian National Research Council
Department of Earth Observation

Inversion Problems and Data Assimilation

MIPAS Dedicated Spectroscopic Database

A dedicated spectroscopic database for MIPAS experiment has been built starting from HITRAN96 with improvements obtained through new laboratory studies or new calculations. A first version of the MIPAS database, which is called mipas_pf2.0, includes updates for the HOCl, HNO₃, O₃, NO₂, CH₄ and H₂O molecules that have been validated performing comparisons between atmospheric simulated spectra and atmospheric ATMOS spectra (see Technical Note).
A new version of the spectroscopic database, which is called mipas_pf3.1, further improves hitran_mipas_pf2.0 with new laboratory spectroscopy or new calculations (see Technical Note )

The molecules that are improved in mipas_pf3.1 are CO₂, HNO₃, CH₄, NO₂, O₃ and COF₂.

The database mipas_pf3.1 is being used for near real time operational Level 2 analysis of MIPAS measurements since 23 July 2003.

References
For further explanation on the MIPAS spectroscopic database, please refer to the following papers:

J.-M. Flaud, A. Perrin, J. Orphal, Qingli Kou, P.-M. Flaud, Z. Dutkiewicz and C. Piccolo, “New analysis of the u5+ u9 - u9 hot band of HNO₃”, Journal of Quantitative Spectroscopy & Radiative Transfer, 77, 355-364 (2003).
J.-M. Flaud, G. Wagner, M. Birk, C. Camy-Peyret, C. Claveau, M.R. De Backer-Barilly, A. Barbe and C. Piccolo, “The Ozone absorption around 10 mm”, Journal of GeophysicalResearch – Atmospheres, Vol. 108, No. D9, 4269 (2003).
J.-M. Flaud, C. Piccolo, B. Carli, A. Perrin, L.H. Coudert J.-L Teffo, and L.R. Brown “Molecular line parameters for the MIPAS (Michelson Interferometer for Passive Atmospheric Sounding) experiment”, J. Atm. and Ocean Optics, 16, 172-182 (2003).

HOW TO OBTAIN A COPY OF THE DATABASE

The database is distributed only to the teams that are part of ACVT (Atmospheric Chemistry Validation Team) under the following conditions:

The database is provided free of charge.
The database is distributed with the implicit understanding that:
it will be used for peaceful purposes within the field of scientific research;
it will not be distributed to other partners;
it will not be used for the production of commercial products.
The authors of the database shall not be held liable for any damage and /or third party infringement that may be caused by the use of the database.
Inconsistencies and errors identified in the database will be reported to the authors.

The scientific results obtained using the database can be published in the scientific literature provided that reference is made to the following publication: J.-M. Flaud et al., J.Atm and Ocean Opt., 16, 172-182 (2003)

Send an e-mail to retrieval@ifac.cnr.it with copy to B.Carli@ifac.cnr.it and
flaud@lisa.univ-paris12.fr in which you:

list your name and affiliation
state that you have read and fully accepted the above conditions.

You will receive a password with which you can download the database.

The database is expected to be distributed to a wider community after the ACVT-2 Workshop, that is planned for 3-7 May 2004 at ESA-ESRIN.