S5P- BASCOE tropospheric ozone first year of tropospheric ozone data
Abstract
Sentinel 5 Precursor (S5P) satellite was launched into a polar orbit in October 2017, carrying the TROPOMI instrument. S5P has sun synchronous orbit with an equator crossing time of 13:30 LT. TROPOMI achieves an almost daily coverage, due to the wide swath width of 2600 km. The near-real-time (NRTI) ozone total column is based on the two step DOAS approach, consisting of a slant column retrieval and an iterative AMF-calculation. The latest updates of the NRTI algorithm are included and reprocessed data are used. In this study we present tropospheric ozone columns based on total column from S5P and stratospheric column provided by the Belgian Assimilation System for Chemical ObsErvations (BASCOE). BASCOE stratospheric ozone are based on the assimilation of ozone profiles observed by the Microwave Limb Sounder (MLS on AURA) or potentially by the Ozone Mapping Profiler Suite (OMPS on SNPP), and are delivered with a time frequency of 3 hours. BASCOE stratospheric columns are interpolated linearly in time and space to TROPOMI total column locations before subtraction. To avoid potential errors we used only cloud free TROPOMI data. After a brief introduction of the method, the data will be compared to other tropospheric ozone data e.g OMPS or sondes. The study will focus be on the first year highlighting some tropospheric ozone hotspots.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFM.A43J2973L
- Keywords:
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- 3360 Remote sensing;
- ATMOSPHERIC PROCESSES;
- 1640 Remote sensing;
- GLOBAL CHANGE;
- 4337 Remote sensing and disasters;
- NATURAL HAZARDS;
- 8485 Remote sensing of volcanoes;
- VOLCANOLOGY