Satellite Observations of NO₂ Trend over Romania

Figure 3

Time series of NO₂ loading for all cities, for the entire period when satellite observation is available (1997–2010), using data from GOME, SCIAMACHY, OMI, and GOME-2.

(a) Bucharest

(b) Galati-Braila

(c) Rovinari

(d) Iasi

(e) Covasna

(f) Timisoara

(g) Bistrita