Autumn snowfall and hydroclimatic variability during the past millennium inferred from the varved sediments of meromictic Lake A, northern Ellesmere Island, Canada
Abstract We examined the hydroclimatic signal in a record of annual lamina (varve) thickness from High Arctic Lake A, Ellesmere Island (83°00.00′N, 75°30.00′W). In this unglacierized catchment, nival melt is the dominant source for meltwater and transport of sediment to the lake, and autumn snowfall...
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crcambridgeupr:10.1016/j.yqres.2010.06.005 2024-06-09T07:44:12+00:00 Autumn snowfall and hydroclimatic variability during the past millennium inferred from the varved sediments of meromictic Lake A, northern Ellesmere Island, Canada Tomkins, Jessica D. Lamoureux, Scott F. Antoniades, Dermot Vincent, Warwick F. 2010 http://dx.doi.org/10.1016/j.yqres.2010.06.005 http://api.elsevier.com/content/article/PII:S0033589410000645?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589410000645?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400036322 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 74, issue 2, page 188-198 ISSN 0033-5894 1096-0287 journal-article 2010 crcambridgeupr https://doi.org/10.1016/j.yqres.2010.06.005 2024-05-15T13:13:28Z Abstract We examined the hydroclimatic signal in a record of annual lamina (varve) thickness from High Arctic Lake A, Ellesmere Island (83°00.00′N, 75°30.00′W). In this unglacierized catchment, nival melt is the dominant source for meltwater and transport of sediment to the lake, and autumn snowfall is highly influential on varve thickness through the amount of snow available for melt in the following year. For the period during which climatic data are available, varve thickness in Lake A was significantly correlated ( r = 0.50, p < 0.01) with the cumulative snowfall from August to October (ASO) during the previous year and to a lesser extent, ASO mean daily temperature ( r = 0.39, p < 0.01) at Alert, Nunavut (175 km east). The varve thickness record, interpreted as a proxy record of ASO snowfall and by extension, ASO temperature, indicated above-mean conditions during five periods of the past millennium, including most of the 20th century. These results corresponded well to other available high-resolution proxy climate records from the region, with some discrepancies prior to AD 1500 and during the period AD 1700–1900. Article in Journal/Newspaper Arctic Ellesmere Island Nunavut Cambridge University Press Arctic Arctic Lake ENVELOPE(-130.826,-130.826,57.231,57.231) Canada Ellesmere Island Nunavut Quaternary Research 74 2 188 198 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract We examined the hydroclimatic signal in a record of annual lamina (varve) thickness from High Arctic Lake A, Ellesmere Island (83°00.00′N, 75°30.00′W). In this unglacierized catchment, nival melt is the dominant source for meltwater and transport of sediment to the lake, and autumn snowfall is highly influential on varve thickness through the amount of snow available for melt in the following year. For the period during which climatic data are available, varve thickness in Lake A was significantly correlated ( r = 0.50, p < 0.01) with the cumulative snowfall from August to October (ASO) during the previous year and to a lesser extent, ASO mean daily temperature ( r = 0.39, p < 0.01) at Alert, Nunavut (175 km east). The varve thickness record, interpreted as a proxy record of ASO snowfall and by extension, ASO temperature, indicated above-mean conditions during five periods of the past millennium, including most of the 20th century. These results corresponded well to other available high-resolution proxy climate records from the region, with some discrepancies prior to AD 1500 and during the period AD 1700–1900. |
format |
Article in Journal/Newspaper |
author |
Tomkins, Jessica D. Lamoureux, Scott F. Antoniades, Dermot Vincent, Warwick F. |
spellingShingle |
Tomkins, Jessica D. Lamoureux, Scott F. Antoniades, Dermot Vincent, Warwick F. Autumn snowfall and hydroclimatic variability during the past millennium inferred from the varved sediments of meromictic Lake A, northern Ellesmere Island, Canada |
author_facet |
Tomkins, Jessica D. Lamoureux, Scott F. Antoniades, Dermot Vincent, Warwick F. |
author_sort |
Tomkins, Jessica D. |
title |
Autumn snowfall and hydroclimatic variability during the past millennium inferred from the varved sediments of meromictic Lake A, northern Ellesmere Island, Canada |
title_short |
Autumn snowfall and hydroclimatic variability during the past millennium inferred from the varved sediments of meromictic Lake A, northern Ellesmere Island, Canada |
title_full |
Autumn snowfall and hydroclimatic variability during the past millennium inferred from the varved sediments of meromictic Lake A, northern Ellesmere Island, Canada |
title_fullStr |
Autumn snowfall and hydroclimatic variability during the past millennium inferred from the varved sediments of meromictic Lake A, northern Ellesmere Island, Canada |
title_full_unstemmed |
Autumn snowfall and hydroclimatic variability during the past millennium inferred from the varved sediments of meromictic Lake A, northern Ellesmere Island, Canada |
title_sort |
autumn snowfall and hydroclimatic variability during the past millennium inferred from the varved sediments of meromictic lake a, northern ellesmere island, canada |
publisher |
Cambridge University Press (CUP) |
publishDate |
2010 |
url |
http://dx.doi.org/10.1016/j.yqres.2010.06.005 http://api.elsevier.com/content/article/PII:S0033589410000645?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589410000645?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400036322 |
long_lat |
ENVELOPE(-130.826,-130.826,57.231,57.231) |
geographic |
Arctic Arctic Lake Canada Ellesmere Island Nunavut |
geographic_facet |
Arctic Arctic Lake Canada Ellesmere Island Nunavut |
genre |
Arctic Ellesmere Island Nunavut |
genre_facet |
Arctic Ellesmere Island Nunavut |
op_source |
Quaternary Research volume 74, issue 2, page 188-198 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1016/j.yqres.2010.06.005 |
container_title |
Quaternary Research |
container_volume |
74 |
container_issue |
2 |
container_start_page |
188 |
op_container_end_page |
198 |
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1801372985788989440 |