Fig. 2: The evaluation of the mapping effects on different temporal scales. | npj Climate and Atmospheric Science

Fig. 2: The evaluation of the mapping effects on different temporal scales.

From: Machine learning-guided integration of fixed and mobile sensors for high resolution urban PM2.5 mapping

Fig. 2

Comparative evaluation of mapping effects on a hourly scale, b daily scale, and c monthly scale before and after the reduction of micro-fixed monitoring points. The panels in the first, third, and fifth rows display the spatiotemporal distributions of hourly, daily, and monthly averages of PM2.5 concentration data products developed from multi-source data before reducing the number of micro-fixed monitoring points. In contrast, the panels in the second, fourth, and sixth rows depict the corresponding distributions after the reduction.

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