Some results from the Air Chemistry Observatory
This photo shows the high volume (HV) and low volume (LV) aerosol sampling set-up. The HV-filter is situated inside the aluminium holders (on the right side, between the striking orange coloured solenoid valves). The pumps are mounted below the desk. Typically the air flow through the HV-filters is around 100 m3/h and 20 000 m3 - 40 000 m3 air is forced through the filters. Also shown is the condensation nuclei (CN-) counter and the intergrating nephelometer. Analyses of the filters are performed at the AWI in Bremerhaven (ionic composition) and at the Institut für Umweltphysik in Heidelberg.
This photo shows the sampling system for greenhouse gases CH4, CO2, N2O, and water vapour. Water vapour is cryogenically accumulated (Dewar vessel on the left side), CH4, CO2, and N2O are sampled in two Pyrex-flasks. Analyses of the samples (including isotopic composition) are performed after the over-wintering season in the laboratories of the Institut für Umweltphysik in Heidelberg. For further information, please contact Ingeborg Levin. For further information, please contact Rolf Weller or Dietmar Wagenbach.
