The GMTR retrieval system
GMTR (Geofit Multi-Target Retrieval) is an open source software for the inversion of MIPAS measurements. This model implements the Geo-fit two-dimensional inversion for the simultaneous retrieval of several targets including a set of atmospheric constituents that are not considered by the ground-processor of the MIPAS experiment.
Because of the 2-dimensional (Geofit) and multi-target (MTR) capabilities of the retrieval algorithm, the GMTR retrieval system offer the opportunity to avoid the propagation of the systematic errors and the assumption of horizontally homogeneous atmosphere then enabling to retrieve, from MIPAS measurements, Level-2 products of improved quality. GMTR can be used to analyze MIPAS observations independently from the spectral resolution and the limb-scanning pattern. It is then suitable for:
- the analysis of nominal mode measurements,
- the analysis of most of the special mode measurements, i.e. measurements acquired with reduced spectral resolution and/or making use of an oversampled scan pattern,
- the retrieval of minor atmospheric constituents that are not considered by the ESA ground processor.
This software was developed in the frame of the European Space Agency (ESA) study ‘Development of Algorithms for the Exploitation of MIPAS Special Modes Measurements’ (ESA-ESRIN Contract No: 16700/02/I-LG) and is now available for users.
It is possible to download the full package (that includes the source codes, the complementary documentation, and a full set of auxiliary data) that enables the user to analyze all MIPAS Level-1b data. The current version of the auxiliary data database allows the retrieval of pressure, temperature and 24 atmospheric constituents:
the six ESA-PDS molecules (H2O, O3, HNO3, CH4, N2O and NO2), C2H6, ClO, COF2, F14, H2O2, HOCl, NH3, OCS, SF6, CCl4, CLONO2, F11, F22, HCN, SO2, CO, F12, N2O5).
The GMTR software is constantly improved, but the last version is not of public domain. In order to know more about the new added features please click here. If you are interested in some of the advanced added features, please contact us at: carlotti[at]ms.fci.unibo.it
Download
You are encouraged to fill in the form below. Your answers will be used to prioritize our development effort and to notify you for available updates. We will not provide this information to other parties, and we assure you that we will not spam your e-mail. You can unsubscribe at any time.