Table 3 Average absolute and per cent trends in SO2.
Time period | Region | Nr. of stations | Average annual trend (STD) %/year | Absolute annual trend (STD) μgS/m3 year. | ||
|---|---|---|---|---|---|---|
Obs | EMEP MSC-W | Obs | EMEP MSC-W | |||
1980–1990 | Europe | 20 | −5.03 (2.04) | −0.211 (0.168) | ||
1990–2000 | Europe | 43 | −7.56 (1.81) | −8.54 (1.40) | −0.220 (0.275) | −0.318 (0.316) |
1990–2000 | North America | 53 | −3.27 (1.69) | −2.63 (0.30) | −0.125 (0.115) | −0.065 (0.037) |
1990–2015 | Europe | 40 | −4.43 (0.88) | −4.63 (0.43) | −0.084 (0.085) | −0.131 (0.132) |
1990–2015 | North America | 71 | −3.14 (0.75) | −2.83 (0.30) | −0.116 (0.109) | −0.066 (0.046) |
2000–2010 | Africa | 8 | 17.6 (13.9) | 1.86 (1.19) | 0.144 (0.121) | 0.012 (0.025) |
2000–2010 | East Asia | 19 | 5.84 (9.40) | 0.35 (2.22) | 0.038 (0.119) | 0.001 (0.025) |
2000–2010 | Europe | 51 | −4.23 (3.17) | −5.31 (1.61) | −0.046 (0.054) | −0.064 (0.055) |
2000–2010 | North America | 78 | −4.55 (1.68) | −4.44 (0.95) | −0.119 (0.113) | −0.080 (0.060) |
2000–2015 | Africa | 8 | 4.97 (2.70) | 1.11 (0.63) | 0.062 (0.068) | 0.008 (0.011) |
2000–2015 | East Asia | 19 | −0.14 (5.32) | −0.41 (0.92) | −0.055 (0.186) | −0.001 (0.031) |
2000–2015 | Europe | 47 | −3.89 (2.16) | −4.86 (1.31) | −0.036 (0.036) | −0.054 (0.046) |
2000–2015 | North America | 77 | −4.69 (1.35) | −4.40 (0.93) | −0.130 (0.123) | −0.069 (0.051) |
