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Station Characteristics 2010-03-24/2141913704
GAW ID APT Aspvreten (Sweden)
station status established 01.01.1986 / full operation Regional station in WMO RA VI - Europe
time zone UTC+1 58.80600°N 17.38800°E (20 m a.s.l.)
climate zone Cfb (Warm temperate climate, fully humid, warm summer)
other affiliations EMEP(SE0012R)
description Aspvreten is a rural backgound station. The nature near the station, within 20 km, is a mix of decidous and coniferous forest, open fields and small lakes. The station is about 2 km from the Baltic coast. The topography is caracterised by small hills (max. 100 m.a.s.l). There are no major pollutant emitters nearby, the closest towns are Trosa (16 km, 5000 inh.), Nyköping (23 km, 27 000 inh.), Oxelösund (23 km., 11 000 inh). The major industry nearby is an iron work in Oxelösund. Stockholm (1.2 milj inh.) is 80 km north of the station. Picture of Aspvreten facility

Measurement Program
type parameter method contributor start end details
Aerosol Acidity/Alkalinity ## unknown/unspecified 1984-01-01 1987-01-01
Ammonium (NH4+) ## unknown/unspecified 1992-12-01 1993-09-25
Carbonaceous/organic material (coarse), PM10 Thermo-optical analyzer (Sunset Labs) 2002-07-02 2003-07-02
Carbonaceous/organic material (fine) Filter sampling + combustion + other ITM 2008-04-15
Elementary carbon (coarse), PM10 Thermo-optical analyzer (Sunset Labs) 2002-07-02 2003-07-02
Light absorption coefficient Filter + light attenuation (aethalometer) ITM 2004-09-13
Light scattering coefficient Nephelometry, integrating ITM 2007-06-01
Mass concentration (coarse) or Mass PM10 Continuous gravimetry ITM 1990-03-15
Mass concentration (medium), PM2.5 ## unknown/unspecified 2005-01-01 2006-01-01
Nitrate (NO3-) ## unknown/unspecified 1992-12-01 1993-09-25
Number size distribution Differential mobility particle sizer (DMA, DMPS) ITM 2005-01-01 2009-01-01
Sulphate (SO4=), total X-ray fluorescence (XRF) 1984-01-01 1988-01-01
Temperature Differential mobility particle sizer (DMA, DMPS) 2005-01-01 2009-01-01
Total carbon (coarse), PM10 Thermo-optical analyzer (Sunset Labs) 2002-07-02 2003-07-02
Meteo Humidity Hygrometer ITM 1986-01-01
Precipitation Tipping bucket rain gauge ITM 2004-04-26
Pressure Barometer/Pressure sensor ITM 1992-11-04
Temperature Thermometer/-element ITM 1986-01-01
Wind direction Wind vane 1986-03-12
Wind speed Anemometer 1986-03-12
Ozone Surface ozone UV photometry [general] ITM 1987-12-31 2008-01-01
Precipitation Chem Ammonium (NH4+) Flow injection analyzer (FIA) 1995-01-01 2000-05-01
Arsenic (As) ICP-MS 1987-01-01 1996-01-01
Cadmium (Cd) ICP-MS 1996-01-01 2000-06-30
Calcium (Ca++) Atomic absorption spectrophotometry (AAS) 1995-01-01 1995-12-31
Chloride (Cl-) Ion Chromatography (IC) [general] 1995-01-01 2000-05-01
Chromium (Cr) ICP-MS 1987-01-01 1996-01-01
Cobalt (Co) ICP-MS 1987-01-01 1996-01-01
Copper (Cu) ICP-MS 1997-01-01 2000-06-30
Electric conductivity Electric conductivity (EC meter) 1995-01-01 2000-05-01
Hydrogen ion (H+) or pH Potentiometry (pH meter) 1995-01-01 2000-05-01
Iron (Fe) ICP-MS 1996-01-01 2000-06-30
Lead (Pb) ICP-MS 1996-01-01 2000-06-30
Magnesium (Mg++) Atomic absorption spectrophotometry (AAS) 1991-01-01 1995-01-01
Manganese (Mn) ICP-MS 1987-01-01 1996-01-01
Nickel (Ni) ICP-MS 1987-01-01 1996-01-01
Nitrate (NO3-) Ion Chromatography (IC) [general] 1984-01-01 1995-01-01
Potassium (K+) Atomic absorption spectrophotometry (AAS) 1991-01-01 1995-01-01
Sodium (Na+) Anion exchange membrane (AEM) 1985-01-01 1988-01-01
Sulphate (SO4=), corrected Ion Chromatography (IC) [general] 1995-01-01 2000-05-01
Sulphate (SO4=), total Ion Chromatography (IC) [general] 1995-01-01 2000-05-01
Vanadium (V) ICP-MS 1987-01-01 1996-01-01
Zinc (Zn) ICP-MS 1996-01-01 2000-06-30
Radiation Global solar radiation Pyranometer (global solar, broadband) ITM 1988-02-04
Reactive Gas Ammonia (NH3) ## unknown/unspecified 1992-12-01 1993-09-25
HNO3 (nitric acid) ## unknown/unspecified 1992-12-01 1993-09-25
NO2 Colorimetry (Saltzman) 1985-01-01 1987-01-01
SO2 Ion Chromatography (IC) [general] 1992-01-01 2000-04-01

Contact Person(s)
name Mr. Hans Areskoug
address ITM Stockholm University

S-106 91 Stockholm
Sweden
2009-11-02/2141913704
phone +46 08 674 72 83
fax
mailto hans.areskoug@itm.su.se
url
GAW function
station function Primary station contact, Measurement leader [Aerosol: Light absorption coefficient]

References
Tunved, P., et al. (2004), A pseudo-Lagrangian model study of the size distribution properties over Scandinavia: transport from Aspvreten to Varrio, Atmos. Chem. Phys. Discuss, 4, 7757--7794, http://www.atmos-chem-phys.org/acpd/4/7757/acpd-4-7757_p.pdf
Tunved, P., et al. (2004), An investigation of processes controlling the evolution of the boundary layer aerosol size distribution properties at the Swedish background station Aspvreten, Atmos. Chem. Phys, 4, 2581--2592, http://www.atmos-chem-phys.org/4/2581/2004/acp-4-2581-2004.pdf
 
 
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Funding provided by MeteoSwiss is greatfully acknowledged. 		http://www.meteoswiss.ch