Table 1. Overview of DOAS analysis settings for the measured species.
Species | Cross Sections | Wavelength (nm) | Polynomial (Order) | Detection Limits 1 (ppbv) |
---|---|---|---|---|
O3 | O3, SO2, O2, HCHO, CH3CHO | 270–290 | 3rd | 3.0 |
NO2 | NO2, HONO, HCHO | 360–400 | 3rd | 2.0 |
HONO | HONO, NO2, HCHO, SO2 | 340–380 | 3rd | 0.2 |
HCHO | HCHO, SO2, NO2,O3 | 313–340 | 3rd | 1.0 |
1 according to instruments noise in a light path of 1.36 km and 3 min integration time.