ML2O3_NRT is the EOS Aura Microwave Limb Sounder (MLS) Near-Real-Time (NRT) product for ozone (O3). This product contains daily O3 profiles taken from the 240 GHz band. The most recent 7 days of data are available. Spatial coverage is near-global (-82° to +82° latitude), with each profile spaced 1.5° or ~165 km along the orbit track (roughly 15 orbits per day). The recommended useful vertical range of NRT Ozone profiles is 68-0.2 hPa, except for the calculation of ozone columns where the 100 hPa pressure level may be used. There are about 96 NRT files per day containing roughly 15 minutes or less of data each.
Before using these data, please download both the MLS version 2.2 NRT User Guide which describes the NRT algorithm and data quality, as well as the MLS Level-2 Data Quality Document for Standard Products which describes the caveats for using MLS O3 data. MLS documentation can be found at http://disc.sci.gsfc.nasa.gov/Aura/additional/documentation/.
Users are encouraged to register with the MLS team at http://mls.jpl.nasa.gov to obtain updates and information about this product from the MLS team.
The MLS NRT data are not as accurate as the retrievals that constitute the standard MLS products, but nevertheless the results are of scientific use and track the standard MLS products with reasonable fidelity. Zonal mean differences between the NRT and standard product v2.2 results are typically within 5 to 10% for pressures between 68 and 0.2 hPa. Comparisons between the two sets of stratospheric retrievals over many days reveal significant differences mostly for pressures of 100 hPa and larger.
Contact_Organization: NASA/GSFC/SED/ESD/GCDC/GESDISC > Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA
Contact_Person: GES DISC HELP DESK SUPPORT GROUP
Contact_Position: DATA CENTER CONTACT
Address_Type: Mailing and Physical Address
Address: Goddard Earth Sciences Data and Information Services Center