edu.ucar.opensky::articles:25512 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T22:41:41.739635 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d70r9t3d https://doi.org/10.5067/AURA/OMI/DATA1401 https Related Dataset #1 OMI/Aura Level 1B Solar Irradiances V4 https://doi.org/10.5067/AURA/OMI/DATA1402 https Related Dataset #2 OMI/Aura Level 1B UV Global Geolocated Earthshine Radiances 1-orbit L2 Swath 13x24 km V4 https://doi.org/10.5067/AURA/OMI/DATA1403 https Related Dataset #3 OMI/Aura Level 1B UV Zoom-in Geolocated Earthshine Radiances 1-orbit L2 Swath 13x12 km V4 https://doi.org/10.5067/AURA/OMI/DATA1404 https Related Dataset #4 OMI/Aura Level 1B VIS Global Geolocated Earth Shine Radiances 1-orbit L2 Swath 13x24 km V4 https://doi.org/10.5067/AURA/OMI/DATA1405 https Related Dataset #5 OMI/Aura Level 1B VIS Zoom-in Geolocated Earthshine Radiances 1-orbit L2 Swath 13x12 km V4 Ozone Monitoring Instrument (OMI) collection 4: Establishing a 17-year-long series of detrended level-1b data 2022-06-14T00:00:00Z publication https://n2t.org/ark:/85065/d70r9t3d https://doi.org/10.5194/amt-15-3527-2022 Kleipool, Q. author Rozemeijer, N. author van Hoek, M. author Leloux, J. author Loots, E. author Ludewig, A. author van der Plas, E. author Adrichem, D. author Harel, R. author Spronk, S. author ter Linden, M. author Jaross, G. author Haffner, D. author Veefkind, P. author Levelt, Pieternel author UCAR/NCAR - Library publisher The Ozone Monitoring Instrument (OMI) was launched on 15 July 2004, with an expected mission lifetime of 5 years. After more than 17 years in orbit the instrument is still functioning satisfactorily and in principle can continue doing so until the expected decommissioning of its platform Aura in 2025. In order to continue the datasets acquired by OMI and the Microwave Limb Sounder, the mission was extended up to at least 2023. Actions have been taken to ensure the proper functioning of the OMI operations, the data processing, and the calibration monitoring system until the eventual end of the mission. For the data processing a new level-0 (L0) to level-1b (L1b) data processor was built based on the recent developments for the TROPOspheric Monitoring Instrument (TROPOMI). With corrections for the degradation of the instrument now included, it is feasible to generate a new data collection to supersede the current collection-3 data products and reprocess the data of the entire mission up to now. This paper describes the differences between the collection-3 and collection-4 data. It will be shown that the collection-4 L1b data comprise a clear improvement with respect to the previous collections. By correcting for the gentle optical and electronic aging that has occurred over the past 17 years, OMI's ability to make trend-quality ozone measurements has further improved. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. None eng geoscientificInformation