The Comprehensive Atmospheric Monitoring Programme (CAMP) aims to assess the input of selected contaminants to the OSPAR maritime area and its regions via atmospheric deposition. This is based on annual monitoring and reporting of concentrations of mandatory and voluntary components in precipitation and air. The CAMP is currently focussed on mandatory monitoring of metals (arsenic, cadmium, chromium, copper, lead, mercury, nickel and zinc), lindane and nitrogen species (ammonium and nitrate) in precipitation, and nitrogen species (NO2, HNO3, NH3, NH4+a, NO3-a) in air. Monitoring of PCBs and PAHs in precipitation and air and of metals as well as lindane in air are voluntary activities under the CAMP.

The detailed commitments of Contracting Parties on atmospheric monitoring are set out in the CAMP principles. Monitoring by Contracting Parties under CAMP is co-ordinated through adherence to jointly agreed monitoring guidance:

The data annually reported under the CAMP are evaluated and published by OSPAR in yearly CAMP data reports. All data collected under the CAMP are assessed on a regular basis. The most recent scientific assessment of long-term trends in atmospheric concentration and deposition of hazardous pollutants to the OSPAR maritime area is the 2005 CAMP data assessment.

Monitoring and assessment under CAMP is complemented through co-operation of OSPAR with the Co-operative Programme for Monitoring and Evaluation of the long range transmission of air pollutants in Europe (EMEP) on modelled atmospheric deposition of selected contaminants. The most recent EMEP model results are available as: