Figure 4.10: Observed monthly
mean O3 abundance (ppb) from sondes at 700 hPa (left column), 500 hPa
(centre) and 300 hPa (right) from a sample of stations (thick black line) compared
with Y2000 model simulations from OxComp (thin coloured lines, see model key in
legend and Table 4.10). The sonde stations include
RESolute (75°N, 95°W), HOHenpeissenberg (48�N, 11°E), BOUlder (40°N,
105°W), TATeno (36°N, 140°E), and HILo (20°N, 155°W). Surface
monthly O3 observations (thick black line) at Cape Grim Observatory
(CGA, 40°S, 144°E, 94 m above mean sea level) are also compared with the
models.