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documentation and monitoring of the aerosol content of a mountain valley atmosphere and its diurnal changes
The major goal of the process study between April 15 and May 15, 2003 is to obtain quantified information on reaction path-ways, products and net deposition of mercury during Arctic sunrise.
The aim of the project is to study the properties (radiative effects, composition) of aerosols using FTIR emission spectroscopy. To determine seasonal changes in aerosol properties the measurements will be carried out year round on a weekly schedule.
Total deposition sampling is performed at Ny-Ålesund to study atmospheric fluxes of heavy metals to the Arctic. In addition wet only deposition sampling is carried out with an automatic precipitation sampler. The samples are analysed at the home laboratory for tracer elements for seaspray components, earthcrust weathered material and anthropogenic elements by atomic absorption spectrometry and inductively coupled plasma-mass spectrometry (ICP-MS). One aim of our study is to distinguish element distribution between the dissolved and particulate phase. In addition to the element analyses the concentration of anions is determined by ionchromatography. In 1996 an automatically operating aerosol sampler was installed, which is combined with the automatic precipitation sampler to study element washout from aerosol particles via rain and snow.