(Table 1) Annual mean concentrations of atmospheric a- and g-Hexachlorocyclohexane at stations Alert, Canada and Zeppelin, Norway
Twelve year datasets of weekly atmospheric concentrations of alpha- and gamma-HCH were compared between the two Arctic monitoring stations of Alert, Nunavut, Canada, and Zeppelin Mountain, Svalbard, Norway. Time-series analysis was conducted with the use of dynamic harmonic regression (DHR), which p...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.786649 2024-09-15T17:51:08+00:00 (Table 1) Annual mean concentrations of atmospheric a- and g-Hexachlorocyclohexane at stations Alert, Canada and Zeppelin, Norway Becker, Sara Halsall, Crispin J Tych, Wlodek Kallenborn, Roland Su, Yushan Hung, Hayley MEDIAN LATITUDE: 80.708350 * MEDIAN LONGITUDE: -25.200015 * SOUTH-BOUND LATITUDE: 78.916700 * WEST-BOUND LONGITUDE: -62.333330 * NORTH-BOUND LATITUDE: 82.500000 * EAST-BOUND LONGITUDE: 11.933300 * DATE/TIME START: 1993-01-01T00:00:00 * DATE/TIME END: 2005-01-01T00:00:00 * MINIMUM ELEVATION: 200.0 m * MAXIMUM ELEVATION: 474.0 m 2008 text/tab-separated-values, 168 data points https://doi.pangaea.de/10.1594/PANGAEA.786649 https://doi.org/10.1594/PANGAEA.786649 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.786649 https://doi.org/10.1594/PANGAEA.786649 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Becker, Sara; Halsall, Crispin J; Tych, Wlodek; Kallenborn, Roland; Su, Yushan; Hung, Hayley (2008): Long-term trends in atmospheric concentrations of a- and g-HCH in the Arctic provide insight into the effects of legislation and climatic fluctuations on contaminant levels. Atmospheric Environment, 42(35), 8225-8233, https://doi.org/10.1016/j.atmosenv.2008.07.058 Air chemistry observatory Alert alpha-Hexachlorocyclohexane in air Canadian Arctic Station DATE/TIME Event label gamma-Hexachlorocyclohexane in air Hexachlorocyclohexane standard deviation International Polar Year (2007-2008) ipy Joint Arctic Weather Stations Latitude of event Longitude of event Mountain Air Monitoring Station Ny-Ålesund Spitsbergen OBSE Observation Queen Elizabeth Islands Canada NWT Ratio Sample amount SPUSO Zeppelin dataset 2008 ftpangaea https://doi.org/10.1594/PANGAEA.78664910.1016/j.atmosenv.2008.07.058 2024-07-24T02:31:31Z Twelve year datasets of weekly atmospheric concentrations of alpha- and gamma-HCH were compared between the two Arctic monitoring stations of Alert, Nunavut, Canada, and Zeppelin Mountain, Svalbard, Norway. Time-series analysis was conducted with the use of dynamic harmonic regression (DHR), which provided a very good model fit, to examine both the seasonal behaviour in these isomers and the longer-term, underlying trends. Strong spatial differences were not apparent between the two sites, although subtle differences in seasonal behaviour and composition were identified. For example, the composition of gamma-HCH to total HCH (alpha + gamma) was greater at Zeppelin compared to Alert, probably reflecting this site's proximity to major use regions of lindane. Pronounced seasonality in air concentrations for gamma-HCH was marked by a 'spring maximum event' (SME), confirming earlier studies. For alpha-HCH, the SME was much weaker and only evident at Alert, whereas at Zeppelin, seasonal fluctuations for alpha-HCH were marked by elevated concentrations in summer and lower concentrations during winter, with this pattern most apparent for the years after 2000. We attribute this difference in spatial and temporal patterns to the Arctic oscillation. A similar climatic pattern was not evident at either site in the gamma-HCH data. Seasonally adjusted, long-term trends revealed declining concentrations at both sites for alpha- and gamma-HCH over the entire time-series. Recent legislation affecting lindane use appear to account for this decline in gamma-HCH, with little evidence of a delay or 'lag' between the banning of lindane in Europe (a main source region) or Canada, and a decline in air concentrations observed at both Arctic sites. Dataset Arctic International Polar Year IPY Nunavut Ny Ålesund Ny-Ålesund Queen Elizabeth Islands Svalbard Spitsbergen PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-62.333330,11.933300,82.500000,78.916700) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Air chemistry observatory Alert alpha-Hexachlorocyclohexane in air Canadian Arctic Station DATE/TIME Event label gamma-Hexachlorocyclohexane in air Hexachlorocyclohexane standard deviation International Polar Year (2007-2008) ipy Joint Arctic Weather Stations Latitude of event Longitude of event Mountain Air Monitoring Station Ny-Ålesund Spitsbergen OBSE Observation Queen Elizabeth Islands Canada NWT Ratio Sample amount SPUSO Zeppelin |
spellingShingle |
Air chemistry observatory Alert alpha-Hexachlorocyclohexane in air Canadian Arctic Station DATE/TIME Event label gamma-Hexachlorocyclohexane in air Hexachlorocyclohexane standard deviation International Polar Year (2007-2008) ipy Joint Arctic Weather Stations Latitude of event Longitude of event Mountain Air Monitoring Station Ny-Ålesund Spitsbergen OBSE Observation Queen Elizabeth Islands Canada NWT Ratio Sample amount SPUSO Zeppelin Becker, Sara Halsall, Crispin J Tych, Wlodek Kallenborn, Roland Su, Yushan Hung, Hayley (Table 1) Annual mean concentrations of atmospheric a- and g-Hexachlorocyclohexane at stations Alert, Canada and Zeppelin, Norway |
topic_facet |
Air chemistry observatory Alert alpha-Hexachlorocyclohexane in air Canadian Arctic Station DATE/TIME Event label gamma-Hexachlorocyclohexane in air Hexachlorocyclohexane standard deviation International Polar Year (2007-2008) ipy Joint Arctic Weather Stations Latitude of event Longitude of event Mountain Air Monitoring Station Ny-Ålesund Spitsbergen OBSE Observation Queen Elizabeth Islands Canada NWT Ratio Sample amount SPUSO Zeppelin |
description |
Twelve year datasets of weekly atmospheric concentrations of alpha- and gamma-HCH were compared between the two Arctic monitoring stations of Alert, Nunavut, Canada, and Zeppelin Mountain, Svalbard, Norway. Time-series analysis was conducted with the use of dynamic harmonic regression (DHR), which provided a very good model fit, to examine both the seasonal behaviour in these isomers and the longer-term, underlying trends. Strong spatial differences were not apparent between the two sites, although subtle differences in seasonal behaviour and composition were identified. For example, the composition of gamma-HCH to total HCH (alpha + gamma) was greater at Zeppelin compared to Alert, probably reflecting this site's proximity to major use regions of lindane. Pronounced seasonality in air concentrations for gamma-HCH was marked by a 'spring maximum event' (SME), confirming earlier studies. For alpha-HCH, the SME was much weaker and only evident at Alert, whereas at Zeppelin, seasonal fluctuations for alpha-HCH were marked by elevated concentrations in summer and lower concentrations during winter, with this pattern most apparent for the years after 2000. We attribute this difference in spatial and temporal patterns to the Arctic oscillation. A similar climatic pattern was not evident at either site in the gamma-HCH data. Seasonally adjusted, long-term trends revealed declining concentrations at both sites for alpha- and gamma-HCH over the entire time-series. Recent legislation affecting lindane use appear to account for this decline in gamma-HCH, with little evidence of a delay or 'lag' between the banning of lindane in Europe (a main source region) or Canada, and a decline in air concentrations observed at both Arctic sites. |
format |
Dataset |
author |
Becker, Sara Halsall, Crispin J Tych, Wlodek Kallenborn, Roland Su, Yushan Hung, Hayley |
author_facet |
Becker, Sara Halsall, Crispin J Tych, Wlodek Kallenborn, Roland Su, Yushan Hung, Hayley |
author_sort |
Becker, Sara |
title |
(Table 1) Annual mean concentrations of atmospheric a- and g-Hexachlorocyclohexane at stations Alert, Canada and Zeppelin, Norway |
title_short |
(Table 1) Annual mean concentrations of atmospheric a- and g-Hexachlorocyclohexane at stations Alert, Canada and Zeppelin, Norway |
title_full |
(Table 1) Annual mean concentrations of atmospheric a- and g-Hexachlorocyclohexane at stations Alert, Canada and Zeppelin, Norway |
title_fullStr |
(Table 1) Annual mean concentrations of atmospheric a- and g-Hexachlorocyclohexane at stations Alert, Canada and Zeppelin, Norway |
title_full_unstemmed |
(Table 1) Annual mean concentrations of atmospheric a- and g-Hexachlorocyclohexane at stations Alert, Canada and Zeppelin, Norway |
title_sort |
(table 1) annual mean concentrations of atmospheric a- and g-hexachlorocyclohexane at stations alert, canada and zeppelin, norway |
publisher |
PANGAEA |
publishDate |
2008 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.786649 https://doi.org/10.1594/PANGAEA.786649 |
op_coverage |
MEDIAN LATITUDE: 80.708350 * MEDIAN LONGITUDE: -25.200015 * SOUTH-BOUND LATITUDE: 78.916700 * WEST-BOUND LONGITUDE: -62.333330 * NORTH-BOUND LATITUDE: 82.500000 * EAST-BOUND LONGITUDE: 11.933300 * DATE/TIME START: 1993-01-01T00:00:00 * DATE/TIME END: 2005-01-01T00:00:00 * MINIMUM ELEVATION: 200.0 m * MAXIMUM ELEVATION: 474.0 m |
long_lat |
ENVELOPE(-62.333330,11.933300,82.500000,78.916700) |
genre |
Arctic International Polar Year IPY Nunavut Ny Ålesund Ny-Ålesund Queen Elizabeth Islands Svalbard Spitsbergen |
genre_facet |
Arctic International Polar Year IPY Nunavut Ny Ålesund Ny-Ålesund Queen Elizabeth Islands Svalbard Spitsbergen |
op_source |
Supplement to: Becker, Sara; Halsall, Crispin J; Tych, Wlodek; Kallenborn, Roland; Su, Yushan; Hung, Hayley (2008): Long-term trends in atmospheric concentrations of a- and g-HCH in the Arctic provide insight into the effects of legislation and climatic fluctuations on contaminant levels. Atmospheric Environment, 42(35), 8225-8233, https://doi.org/10.1016/j.atmosenv.2008.07.058 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.786649 https://doi.org/10.1594/PANGAEA.786649 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.78664910.1016/j.atmosenv.2008.07.058 |
_version_ |
1810292961614757888 |