Although the studies on material creation of Novokuznetsk was scanty, we assessed Novokuznetsk inventory-established No
6dos% of city enterprises produce, supply or support the production of metal 35 . Interestingly, although Novokuznetsk is not a city with coal-oriented economy, coal is actively used as input in its production of metal as conversion of most or all metal ores to usable metal is highly energy intensive. Metal production facilities use coal to provide energy and the metals are being produced by conversion of coal to coke, where both processes emit substantial NO2 emissions in the atmosphere. 2 emissions from a previous study 36 . Notably, NO2 emissions from metal production of West-Siberian Metal Plant (WSMP) account for 8cuatro.2% of all the gaseous pollutants of . Most importantly, we found high correlation (r = 0.76) between inventory-based NO2 emissions from WSMP 36 and our annual NO2 tropospheric estimates from OMI and, where even higher correlation (r = 0.84) was discerned between WSMP NO2 emissions and coal production from Fig. 4 . These findings clearly indicate that metal manufacturing of Novokuznetsk is based on coke-intensive input, thereby pointing on a key role of coal in these emissions.
Lire la suite