Spatial variations and long-term trends of potential evaporation in Canada
Abstract Assessing the status and trend of potential evaporation (PE) is essential for investigating the climate change impact on the terrestrial water cycle. Despite recent advances, evaluating climate change impacts on PE using pan evaporation (E pan ) data in cold regions is hindered by the unava...
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crspringernat:10.1038/s41598-020-78994-9 2023-05-15T14:58:48+02:00 Spatial variations and long-term trends of potential evaporation in Canada Li, Zhaoqin Wang, Shusen Li, Junhua Government of Canada 2020 http://dx.doi.org/10.1038/s41598-020-78994-9 http://www.nature.com/articles/s41598-020-78994-9.pdf http://www.nature.com/articles/s41598-020-78994-9 en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Scientific Reports volume 10, issue 1 ISSN 2045-2322 Multidisciplinary journal-article 2020 crspringernat https://doi.org/10.1038/s41598-020-78994-9 2022-01-04T07:55:58Z Abstract Assessing the status and trend of potential evaporation (PE) is essential for investigating the climate change impact on the terrestrial water cycle. Despite recent advances, evaluating climate change impacts on PE using pan evaporation (E pan ) data in cold regions is hindered by the unavailability of E pan measurements in cold seasons due to the freezing of water and sparse spatial distribution of sites. This study generated long-term PE datasets in Canada for 1979–2016 by integrating the dynamic evolutions of water–ice–snow processes into estimation in the Ecological Assimilation of Land and Climate Observations (EALCO) model. The datasets were compared with E pan before the spatial variations and trends were analyzed. Results show that EALCO PE and E pan measurements demonstrate similar seasonal variations and trends in warm seasons in most areas. Annual PE in Canada varied from 100 mm in the Northern Arctic to approximately 1000 mm in southern Canadian Prairies, southern Ontario, and East Coast, with about 600 mm for the entire landmass. Annual PE shows an increasing trend at a rate of 1.5–4 mm/year in the Northern Arctic, East, and West Canada. The increase is primarily associated with the elevated air temperature and downward longwave and shortwave radiation, with some regions contributed by augmented wind speed. The increase of annual PE is mainly attributed to the augmentation of PE in warm seasons. Article in Journal/Newspaper Arctic Climate change Springer Nature (via Crossref) Arctic Canada Scientific Reports 10 1 |
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Springer Nature (via Crossref) |
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Multidisciplinary |
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Multidisciplinary Li, Zhaoqin Wang, Shusen Li, Junhua Spatial variations and long-term trends of potential evaporation in Canada |
topic_facet |
Multidisciplinary |
description |
Abstract Assessing the status and trend of potential evaporation (PE) is essential for investigating the climate change impact on the terrestrial water cycle. Despite recent advances, evaluating climate change impacts on PE using pan evaporation (E pan ) data in cold regions is hindered by the unavailability of E pan measurements in cold seasons due to the freezing of water and sparse spatial distribution of sites. This study generated long-term PE datasets in Canada for 1979–2016 by integrating the dynamic evolutions of water–ice–snow processes into estimation in the Ecological Assimilation of Land and Climate Observations (EALCO) model. The datasets were compared with E pan before the spatial variations and trends were analyzed. Results show that EALCO PE and E pan measurements demonstrate similar seasonal variations and trends in warm seasons in most areas. Annual PE in Canada varied from 100 mm in the Northern Arctic to approximately 1000 mm in southern Canadian Prairies, southern Ontario, and East Coast, with about 600 mm for the entire landmass. Annual PE shows an increasing trend at a rate of 1.5–4 mm/year in the Northern Arctic, East, and West Canada. The increase is primarily associated with the elevated air temperature and downward longwave and shortwave radiation, with some regions contributed by augmented wind speed. The increase of annual PE is mainly attributed to the augmentation of PE in warm seasons. |
author2 |
Government of Canada |
format |
Article in Journal/Newspaper |
author |
Li, Zhaoqin Wang, Shusen Li, Junhua |
author_facet |
Li, Zhaoqin Wang, Shusen Li, Junhua |
author_sort |
Li, Zhaoqin |
title |
Spatial variations and long-term trends of potential evaporation in Canada |
title_short |
Spatial variations and long-term trends of potential evaporation in Canada |
title_full |
Spatial variations and long-term trends of potential evaporation in Canada |
title_fullStr |
Spatial variations and long-term trends of potential evaporation in Canada |
title_full_unstemmed |
Spatial variations and long-term trends of potential evaporation in Canada |
title_sort |
spatial variations and long-term trends of potential evaporation in canada |
publisher |
Springer Science and Business Media LLC |
publishDate |
2020 |
url |
http://dx.doi.org/10.1038/s41598-020-78994-9 http://www.nature.com/articles/s41598-020-78994-9.pdf http://www.nature.com/articles/s41598-020-78994-9 |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_source |
Scientific Reports volume 10, issue 1 ISSN 2045-2322 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-020-78994-9 |
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Scientific Reports |
container_volume |
10 |
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1 |
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1766330920300707840 |