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| Main Authors: | , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
2013
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| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.822027 |
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| _version_ | 1867172328026144768 |
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| author | Weller, Rolf Levin, Ingeborg Schmithüsen, Dominik Nachbar, Mario Asseng, Jölund Wagenbach, Dietmar |
| author_facet | Weller, Rolf Levin, Ingeborg Schmithüsen, Dominik Nachbar, Mario Asseng, Jölund Wagenbach, Dietmar |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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 activity or long-range transport from South America. The impact of oceanic 222Rn emissions could not be properly assessed but we tentatively identified regional sea ice extent (SIE) variability as a significant driver of the annual 222Rn cycle. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_822027 |
| institution | PANGAEA |
| language | en |
| publishDate | 2013 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | 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 Air chemistry observatory; Atmospheric Chemistry @ AWI; AWI_AC; DATE/TIME; Date/time end; Dronning Maud Land, Antarctica; Duration, number of days; HEIGHT above ground; Neumayer_based; Neumayer_SPUSO; NEUMAYER III; Radon-222 activity; SPUSO 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 activity or long-range transport from South America. The impact of oceanic 222Rn emissions could not be properly assessed but we tentatively identified regional sea ice extent (SIE) variability as a significant driver of the annual 222Rn cycle. |
| title | Continuously measured 222Rn activity concentrations (daily means) in near surface air at Neumayer Station in the period 1995 through 2011 |
| topic | Air chemistry observatory; Atmospheric Chemistry @ AWI; AWI_AC; DATE/TIME; Date/time end; Dronning Maud Land, Antarctica; Duration, number of days; HEIGHT above ground; Neumayer_based; Neumayer_SPUSO; NEUMAYER III; Radon-222 activity; SPUSO |
| url | https://doi.org/10.1594/PANGAEA.822027 |