An ozonesonde evaluation of spaceborne observations in the Andean tropics.

ABSTRACT: Satellite observations of ozone in the tropics have feedback from in situ measurements at sea level stations, but the tropical Andes is a region that is yet to be included in systematic validations. In this work, ozonesondes launched from the equatorial Andes were used to evaluate total column ozone (TCO) measured by spaceborne sensors TROPOMI/S5P (2018-2021), GOME-2/MetOp-B, OMI/Aura, and OMPS/Suomi NPP (2014-2021). Likewise, we evaluated tropospheric column ozone (TrCO) measured by the first two. Additionally, we evaluated TCO and TrCO from reanalysis products MERRA-2 and CAMS-EAC4. Results indicate that TCO observations by OMPS/Suomi NPP produce the closest comparison to ozonesondes (- 0.2% mean difference) followed by OMI/Aura (+ 1.2% mean difference). Thus, they outperform the sensor

SUBMITTER: Cazorla M 

PROVIDER: S-EPMC9509352 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature