Fig. 2: NO2 concentrations over West Siberia observed by TROPOMI on 14 April 2019. | npj Climate and Atmospheric Science

Fig. 2: NO2 concentrations over West Siberia observed by TROPOMI on 14 April 2019.

From: Connecting the dots: NOx emissions along a West Siberian natural gas pipeline

Fig. 2

The main point sources in the region are indicated by numbers (for the compressor stations) and characters (for power plants). The inset shows the SRTO-Torzhok natural gas pipeline (orange) transport natural gas from the region around Urengoy in West Siberia to the various European natural gas pipelines. Along the 2200 km pipeline are about 13 compressor stations. (http://www.gazprom.com/projects/srto-torzhok/). Missing data near the coasts are due to data quality issues. Note that the official names of the compressor stations are unknown to the authors, therefore they are named after the nearest settlement.

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