The site:
The schedule:
The aims:
Semi-blind intercomparison of UV-Vis (MAX-)DOAS sensors, with external referee:
Assess consistency of instruments (following FRM principles)
Certification of (new) instruments contributing to ACTRIS/NDACC
Provide training on various aspects of instrument operation, calibration, QA/QC of data
Motivate R&D on new products developments, harmonization of retrieval strategies, etc
Target species:
main: NO2, O3
secondary: HCHO, CHOCHO and aerosols
other: HONO, BrO, H2O
Products to intercompare:
slant columns from direct-sun and sky (MAX-DOAS) measurements
Vertical columns
Partial columns & profiles