(Table 1) White ice and melt pond characteristics in Darnley and Franklin Bay, Canada
Melt pond covered sea ice is a ubiquitous feature of the summertime Arctic Ocean when meltwater collects in lower-lying areas of ice surfaces. Horizontal transects were conducted during June 2008 above and below landfast sea ice with melt ponds to characterize surface and bottom topography together...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.809476 2023-05-15T13:12:04+02:00 (Table 1) White ice and melt pond characteristics in Darnley and Franklin Bay, Canada Ehn, Jens K Mundy, Christopher John Barber, David G Hop, Haakon Rossnagel, Andrea L Stewart, Jeremy MEDIAN LATITUDE: 69.892500 * MEDIAN LONGITUDE: -124.757500 * SOUTH-BOUND LATITUDE: 69.820000 * WEST-BOUND LONGITUDE: -125.900000 * NORTH-BOUND LATITUDE: 69.970000 * EAST-BOUND LONGITUDE: -123.620000 * DATE/TIME START: 2008-06-08T00:00:00 * DATE/TIME END: 2008-06-21T00:00:00 2011-04-02 text/tab-separated-values, 174 data points https://doi.pangaea.de/10.1594/PANGAEA.809476 https://doi.org/10.1594/PANGAEA.809476 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.809476 https://doi.org/10.1594/PANGAEA.809476 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Ehn, Jens K; Mundy, Christopher John; Barber, David G; Hop, Haakon; Rossnagel, Andrea L; Stewart, Jeremy (2011): Impact of horizontal spreading on light propagation in melt pond covered seasonal sea ice in the Canadian Arctic. Journal of Geophysical Research: Oceans, 116, C00G02, https://doi.org/10.1029/2010JC006908 Amundsen Gulf Canada Darnley_Bay_Site1 Darnley_Bay_Site3 DATE/TIME Event label Franklin_Bay_Site2 Franklin_Bay_Site4 Freeboard Ice draft ICEM Ice measurement International Polar Year (2007-2008) International Polar Year 2007-2008 IPY IPY-4 Irradiance incident photosynthetically active Melt pond depth Melt pond freeboard Sample type Sea ice thickness Site Transmittance Water level Dataset 2011 ftpangaea https://doi.org/10.1594/PANGAEA.809476 https://doi.org/10.1029/2010JC006908 2023-01-20T09:00:53Z Melt pond covered sea ice is a ubiquitous feature of the summertime Arctic Ocean when meltwater collects in lower-lying areas of ice surfaces. Horizontal transects were conducted during June 2008 above and below landfast sea ice with melt ponds to characterize surface and bottom topography together with variations in transmitted spectral irradiance. We captured a rapid progression from a highly flooded sea ice surface with lateral drainage toward flaws and seal breathing holes to the formation of distinct melt ponds with steep edges. As the mass of the ice cover decreased due to meltwater drainage and rose upward with respect to the seawater level, the high-scattering properties of ice above the water level (i.e., white ice) were continuously regenerated, while pond waters remained transparent compared to underlying ice. The relatively stable albedos observed throughout the study, even as ice thickness decreased, were directly related to these surface processes. Transmission through the ice cover of incident irradiance in the 400-700 nm wave band ranged from 38% to 67% and from 5% to 16% beneath ponded and white ice, respectively. Our results show that this transmission varied not only as a function of surface type (melt ponds or white ice) areal coverage but also in relation to ice thickness and proximity to other surface types through the influence of horizontal spreading of light. Thus, in contrast to albedo, this implies that regional transmittance estimates need to consider melt pond size and shape distributions and variations in optical properties and thickness of the ice cover. Dataset albedo Amundsen Gulf Arctic Arctic Arctic Ocean Franklin Bay International Polar Year IPY Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Arctic Arctic Ocean Canada Darnley ENVELOPE(69.717,69.717,-67.717,-67.717) ENVELOPE(-125.900000,-123.620000,69.970000,69.820000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Amundsen Gulf Canada Darnley_Bay_Site1 Darnley_Bay_Site3 DATE/TIME Event label Franklin_Bay_Site2 Franklin_Bay_Site4 Freeboard Ice draft ICEM Ice measurement International Polar Year (2007-2008) International Polar Year 2007-2008 IPY IPY-4 Irradiance incident photosynthetically active Melt pond depth Melt pond freeboard Sample type Sea ice thickness Site Transmittance Water level |
spellingShingle |
Amundsen Gulf Canada Darnley_Bay_Site1 Darnley_Bay_Site3 DATE/TIME Event label Franklin_Bay_Site2 Franklin_Bay_Site4 Freeboard Ice draft ICEM Ice measurement International Polar Year (2007-2008) International Polar Year 2007-2008 IPY IPY-4 Irradiance incident photosynthetically active Melt pond depth Melt pond freeboard Sample type Sea ice thickness Site Transmittance Water level Ehn, Jens K Mundy, Christopher John Barber, David G Hop, Haakon Rossnagel, Andrea L Stewart, Jeremy (Table 1) White ice and melt pond characteristics in Darnley and Franklin Bay, Canada |
topic_facet |
Amundsen Gulf Canada Darnley_Bay_Site1 Darnley_Bay_Site3 DATE/TIME Event label Franklin_Bay_Site2 Franklin_Bay_Site4 Freeboard Ice draft ICEM Ice measurement International Polar Year (2007-2008) International Polar Year 2007-2008 IPY IPY-4 Irradiance incident photosynthetically active Melt pond depth Melt pond freeboard Sample type Sea ice thickness Site Transmittance Water level |
description |
Melt pond covered sea ice is a ubiquitous feature of the summertime Arctic Ocean when meltwater collects in lower-lying areas of ice surfaces. Horizontal transects were conducted during June 2008 above and below landfast sea ice with melt ponds to characterize surface and bottom topography together with variations in transmitted spectral irradiance. We captured a rapid progression from a highly flooded sea ice surface with lateral drainage toward flaws and seal breathing holes to the formation of distinct melt ponds with steep edges. As the mass of the ice cover decreased due to meltwater drainage and rose upward with respect to the seawater level, the high-scattering properties of ice above the water level (i.e., white ice) were continuously regenerated, while pond waters remained transparent compared to underlying ice. The relatively stable albedos observed throughout the study, even as ice thickness decreased, were directly related to these surface processes. Transmission through the ice cover of incident irradiance in the 400-700 nm wave band ranged from 38% to 67% and from 5% to 16% beneath ponded and white ice, respectively. Our results show that this transmission varied not only as a function of surface type (melt ponds or white ice) areal coverage but also in relation to ice thickness and proximity to other surface types through the influence of horizontal spreading of light. Thus, in contrast to albedo, this implies that regional transmittance estimates need to consider melt pond size and shape distributions and variations in optical properties and thickness of the ice cover. |
format |
Dataset |
author |
Ehn, Jens K Mundy, Christopher John Barber, David G Hop, Haakon Rossnagel, Andrea L Stewart, Jeremy |
author_facet |
Ehn, Jens K Mundy, Christopher John Barber, David G Hop, Haakon Rossnagel, Andrea L Stewart, Jeremy |
author_sort |
Ehn, Jens K |
title |
(Table 1) White ice and melt pond characteristics in Darnley and Franklin Bay, Canada |
title_short |
(Table 1) White ice and melt pond characteristics in Darnley and Franklin Bay, Canada |
title_full |
(Table 1) White ice and melt pond characteristics in Darnley and Franklin Bay, Canada |
title_fullStr |
(Table 1) White ice and melt pond characteristics in Darnley and Franklin Bay, Canada |
title_full_unstemmed |
(Table 1) White ice and melt pond characteristics in Darnley and Franklin Bay, Canada |
title_sort |
(table 1) white ice and melt pond characteristics in darnley and franklin bay, canada |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.809476 https://doi.org/10.1594/PANGAEA.809476 |
op_coverage |
MEDIAN LATITUDE: 69.892500 * MEDIAN LONGITUDE: -124.757500 * SOUTH-BOUND LATITUDE: 69.820000 * WEST-BOUND LONGITUDE: -125.900000 * NORTH-BOUND LATITUDE: 69.970000 * EAST-BOUND LONGITUDE: -123.620000 * DATE/TIME START: 2008-06-08T00:00:00 * DATE/TIME END: 2008-06-21T00:00:00 |
long_lat |
ENVELOPE(69.717,69.717,-67.717,-67.717) ENVELOPE(-125.900000,-123.620000,69.970000,69.820000) |
geographic |
Arctic Arctic Ocean Canada Darnley |
geographic_facet |
Arctic Arctic Ocean Canada Darnley |
genre |
albedo Amundsen Gulf Arctic Arctic Arctic Ocean Franklin Bay International Polar Year IPY Sea ice |
genre_facet |
albedo Amundsen Gulf Arctic Arctic Arctic Ocean Franklin Bay International Polar Year IPY Sea ice |
op_source |
Supplement to: Ehn, Jens K; Mundy, Christopher John; Barber, David G; Hop, Haakon; Rossnagel, Andrea L; Stewart, Jeremy (2011): Impact of horizontal spreading on light propagation in melt pond covered seasonal sea ice in the Canadian Arctic. Journal of Geophysical Research: Oceans, 116, C00G02, https://doi.org/10.1029/2010JC006908 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.809476 https://doi.org/10.1594/PANGAEA.809476 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.809476 https://doi.org/10.1029/2010JC006908 |
_version_ |
1766250235801108480 |