Variability of tropospheric methane above the Mediterranean Basin inferred from satellite and model data

This study presents results of a comprehensive analysis of atmospheric methane distributions over the Mediterranean Basin in the troposphere using both satellite measurements and model simulations. Multiple instruments with varying measurement technique as well as global chemistry transport model and chemical climate models are utilized in the analyses. I found the contents of this study fairly presented and the general subject of this work has scientific significance. However, the overall structure of the paper seems to be rather poorly constructed. Below are my comments for the authors may take into consideration for improving clarity of this manuscript.

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