Validation of MIPAS IMK/IAA ozone profiles

We present the results of extensive validation program of Version V5R_O3_220 of ozone vertical profiles retrieved with IMK/IAA MIPAS scientific level 2 processor from version 5 of spectral Level 1 files provided by ESA. The time period covered corresponds to Reduced Resolution period of MIPAS instrument, i.e. January 2005-present. The comparison with satellite instruments includes ACE-FTS, MLS, GOMOS, SCIAMACHY, OSIRIS, HALOE and POAM. The comparison with ground-based instruments includes 5 stations from SHADOZ Network and LIDAR from NDACC network. Also, the comparison with Mark IV balloon measurements is presented. For each reference dataset, bias determination and precision validation are performed

Harmonized dataset of ozone profiles from satellite limb and occultation measurements

In this paper, we present a HARMonized dataset of OZone profiles (HARMOZ) based on limb and occultation measurements from Envisat (GOMOS, MIPAS and SCIAMACHY), Odin (OSIRIS, SMR) and SCISAT (ACE-FTS) satellite instruments. These measurements provide high-vertical-resolution ozone profiles covering the altitude range from the upper troposphere up to the mesosphere in years 2001-2012. HARMOZ has been created in the framework of European Space Agency Climate Change Initiative project. The harmonized dataset consists of original retrieved ozone profiles from each instrument, which are screened for invalid data by the instrument teams. While the original ozone profiles are presented in different units and on different vertical grids, the harmonized dataset is given on a common pressure grid in netcdf format. The pressure grid corresponds to vertical sampling of ~ 1 km below 20 km and 2-3 km above 20 km. The vertical range of the ozone profiles is specific for each instrument, thus all information contained in the original data is preserved. Provided altitude and temperature profiles allow the representation of ozone profiles in number density or mixing ratio on a pressure or altitude vertical grids. Geolocation, uncertainty estimates and vertical resolution are provided for each profile. For each instrument, optional parameters, which might be related to the data quality, are also included. For convenience of users, tables of biases between each pair of instruments for each month, as well as bias uncertainties, are provided. These tables characterize the data consistency and can be used in various bias and drift analyses, which are needed, for instance, for combining several datasets to obtain a long-term climate dataset. This user-friendly dataset can be interesting and useful for various analyses and applications, such as data merging, data validation, assimilation and scientific research. Dataset is available at: http://www.esa-ozone-cci.org/?q=node/161