Yearly mean for (a) glyoxal and (b) formaldehyde derived from SCIAMACHY observations in 2005

Yearly mean for (a) glyoxal and (b) formaldehyde derived from SCIAMACHY observations in 2005. (c –e) Sub-figures illustrate the ratio between measured CHOCHO and HCHO while (f– g) show the global distribution as calculated by the model.