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PANGAEA - Publishing Network for Geoscientific & Environmental Data (838.738 recursos)

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Datasets of project "Atmospheric Chemistry @ AWI"

Mostrando recursos 1 - 20 de 127

  1. Airchemistry at Neumayer station, Antarctica during the year 2013

    Weller, Rolf

  2. Airchemistry at Neumayer station, Antarctica during the year 2013

    Weller, Rolf

  3. Continuously measured 222Rn activity concentrations (daily means) in near surface air at Neumayer Station in the period 1995 through 2011

    Weller, Rolf; Levin, Ingeborg; Schmithüsen, Dominik; Nachbar, Mario; Asseng, Jölund; Wagenbach, Dietmar
    We report on continuously measured 222Rn activity concentrations in near-surface air at Neumayer Station in the period 1995-2011. This 17-year record showed no long-term trend and has overall mean ± standard deviation of (0.019 ± 0.012) Bq/m**3. A distinct and persistent seasonality could be distinguished with maximum values of (0.028 ± 0.013) Bq/m**3 from January to March and minimum values of (0.015 ± 0.009) Bq/m**3 from May to October. Elevated 222Rn activity concentrations were typically associated with air mass transport from the Antarctic Plateau. Our results do not support a relation between enhanced 222Rn activity concentrations at Neumayer and cyclonic...

  4. Continuously measured 222Rn activity concentrations (daily means) in near surface air at Neumayer Station in the period 1995 through 2011

    Weller, Rolf; Levin, Ingeborg; Schmithüsen, Dominik; Nachbar, Mario; Asseng, Jölund; Wagenbach, Dietmar
    We report on continuously measured 222Rn activity concentrations in near-surface air at Neumayer Station in the period 1995-2011. This 17-year record showed no long-term trend and has overall mean ± standard deviation of (0.019 ± 0.012) Bq/m**3. A distinct and persistent seasonality could be distinguished with maximum values of (0.028 ± 0.013) Bq/m**3 from January to March and minimum values of (0.015 ± 0.009) Bq/m**3 from May to October. Elevated 222Rn activity concentrations were typically associated with air mass transport from the Antarctic Plateau. Our results do not support a relation between enhanced 222Rn activity concentrations at Neumayer and cyclonic...

  5. Airchemistry at Neumayer station, Antarctica during the year 2012

    Weller, Rolf

  6. Airchemistry at Neumayer station, Antarctica during the year 2012

    Weller, Rolf

  7. Time series of black carbon aerosol measurements from Neumayer Station, 1999-2011

    Weller, Rolf; Minikin, Andreas; Petzold, Andreas; Wagenbach, Dietmar; König-Langlo, Gert
    Continuous black carbon (BC) observations were conducted from 1999 through 2009 by an Aethalometer (AE10) and from 2006 through 2011 by a Multi-Angle Absorption Photometer (MAAP) at Neumayer Station (NM) under stringent contamination control. Considering the respective observation period, BC concentrations measured by the MAAP were somewhat higher (median ± standard deviation: 2.1 ± 2.0 ng/m**3) compared to the AE10 results (1.6 ± 2.1 ng/m**3). Neither for the AE10 nor for the MAAP data set a significant long-term trend could be detected. Consistently a pronounced seasonality was observed with both instruments showing a primary annual maximum between October and November...

  8. Time series of black carbon aerosol measurements from Neumayer Station, 1999-2011

    Weller, Rolf; Minikin, Andreas; Petzold, Andreas; Wagenbach, Dietmar; König-Langlo, Gert
    Continuous black carbon (BC) observations were conducted from 1999 through 2009 by an Aethalometer (AE10) and from 2006 through 2011 by a Multi-Angle Absorption Photometer (MAAP) at Neumayer Station (NM) under stringent contamination control. Considering the respective observation period, BC concentrations measured by the MAAP were somewhat higher (median ± standard deviation: 2.1 ± 2.0 ng/m**3) compared to the AE10 results (1.6 ± 2.1 ng/m**3). Neither for the AE10 nor for the MAAP data set a significant long-term trend could be detected. Consistently a pronounced seasonality was observed with both instruments showing a primary annual maximum between October and November...

  9. Ionic composition of snow from snow pit SP_NMsued110121 excavated near Neumayer Station

    Weller, Rolf

  10. Ionic composition of snow from snow pit SP_NMsued110121 excavated near Neumayer Station

    Weller, Rolf

  11. Ionic composition of snow from snow pit SP_NMsued100113 excavated near Neumayer Station

    Weller, Rolf

  12. Ionic composition of snow from snow pit SP_NMsued100113 excavated near Neumayer Station

    Weller, Rolf

  13. Ionic composition of snow from snow pit SP_NMsued090106 excavated near Neumayer Station

    Weller, Rolf

  14. Ionic composition of snow from snow pit SP_NMsued090106 excavated near Neumayer Station

    Weller, Rolf

  15. Ionic composition of snow from snow pit SP_NMsued080131 excavated near Neumayer Station

    Weller, Rolf

  16. Ionic composition of snow from snow pit SP_NMsued080131 excavated near Neumayer Station

    Weller, Rolf

  17. Ionic composition of snow from snow pit SP_NMsued061223 excavated near Neumayer Station

    Weller, Rolf

  18. Ionic composition of snow from snow pit SP_NMsued061223 excavated near Neumayer Station

    Weller, Rolf

  19. Ionic composition of snow from snow pit SP_NMsued051231 excavated near Neumayer Station

    Weller, Rolf

  20. Ionic composition of snow from snow pit SP_NMsued051231 excavated near Neumayer Station

    Weller, Rolf

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