Almost 135 different atmospheric variables are measured within ACTRIS. ACTRIS measurements comply with well-described measurement guidelines and standard operating procedures (SOPs). Comparable data from different observational platforms and sites are crucial, but only possible with SOPs and detailed description of procedures and recommendations.
The ACTRIS Data Centre offers access to all ACTRIS measurement guidelines and SOPs used for aerosol remote observations, and aerosol and trace in situ measurements within ACTRIS. The same methodologies, guidelines and SOPs are also implemented in other networks, and recommended within EMEP and GAW.
Compiled ACTRIS SOPs and guidelines for aerosol, cloud and trace gases measurements: http://actris.nilu.no/Content/SOP