Spatial and Temporal Variation of Total Column Ozone over Turkey with MERRA-2

Year 2022, Volume: 9 Issue: 3, 154 - 164, 08.09.2022

Kahraman Oğuz , Mithat Ekici , Yılmaz Açar

https://doi.org/10.30897/ijegeo.1039383

Cited By: 1

Abstract

The main aim of this study is to analyse spatial and temporal variation of total column ozone as well as the trend over Turkey with MERRA-2 Reanalysis for the period 1980-2019. First of all, MERRA-2 total column ozone is compared with Brewer Spectrophotometer located in Ankara in this study. As a result, it is found that MERRA-2 total column ozone agrees quite well (R2=0.9781) with that from the Brewer Spectrophotometer. The trend analysis over Turkey indicates statistically significant decreasing trend in the 1980-1999 period, non-significant decreasing trend in the 2000-2009 period and non-significant increasing trend in the 2010-2019 period. The highest annual average total column ozone are found in Istanbul, Canakkale and Samsun cities with the values of 326.3±6.9 DU, 324.0±6.7 DU and 322.2±6.6 DU, respectively. Total column ozone are the highest in spring, followed by winter, and the lowest in summer and autumn seasons over Turkey.

Keywords

Total ozone, Spatial and temporal variation, Brewer spectrophotometer, MERRA-2 reanalysis

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