Spatial and seasonal variations in evapotranspiration over Canada's landmass
A 30 yr (1979–2008) dataset of actual evapotranspiration (ET) at 1 km resolution was generated over Canada's landmass by integrating remote sensing land surface data and gridded climate data using the EALCO model run at a 30 min time step. This long-term high-resolution dataset was used to char...
Published in: | Hydrology and Earth System Sciences |
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Copernicus Publications
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fttriple:oai:gotriple.eu:oai:doaj.org/article:acf30681c6df4d219169596ff1eb653b 2023-05-15T14:57:58+02:00 Spatial and seasonal variations in evapotranspiration over Canada's landmass S. Wang Y. Yang Y. Luo A. Rivera 2013-09-01 https://doi.org/10.5194/hess-17-3561-2013 http://www.hydrol-earth-syst-sci.net/17/3561/2013/hess-17-3561-2013.pdf https://doaj.org/article/acf30681c6df4d219169596ff1eb653b en eng Copernicus Publications doi:10.5194/hess-17-3561-2013 1027-5606 1607-7938 http://www.hydrol-earth-syst-sci.net/17/3561/2013/hess-17-3561-2013.pdf https://doaj.org/article/acf30681c6df4d219169596ff1eb653b undefined Hydrology and Earth System Sciences, Vol 17, Iss 9, Pp 3561-3575 (2013) envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2013 fttriple https://doi.org/10.5194/hess-17-3561-2013 2023-01-22T19:05:19Z A 30 yr (1979–2008) dataset of actual evapotranspiration (ET) at 1 km resolution was generated over Canada's landmass by integrating remote sensing land surface data and gridded climate data using the EALCO model run at a 30 min time step. This long-term high-resolution dataset was used to characterize the spatiotemporal variations in ET across Canada. The results show that annual ET varied from 600 mm yr−1 over several regions in the south to less than 100 mm yr−1 in the northern Arctic. Nationally, ET in summer (i.e., June to August) comprised 65% of the annual total amount. ET in the cold season remained mostly below 10 mm month−1 over the country. Negative monthly ET was obtained over the Arctic region in winter, indicating EALCO simulated a larger amount of condensation than ET. Overall, the mean ET over the entire Canadian landmass for the 30 yr was 239 mm yr−1, or 44% of its corresponding precipitation. Comparisons of available ET studies in Canada revealed large uncertainties in ET estimates associated with using different approaches. The scarcity of ET measurements for the diverse ecosystems in Canada remains a significant challenge for reducing the uncertainties; this gap needs to be addressed in future studies to improve capabilities in climate/weather modeling and water resource management. Article in Journal/Newspaper Arctic Unknown Arctic Canada Hydrology and Earth System Sciences 17 9 3561 3575 |
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envir geo S. Wang Y. Yang Y. Luo A. Rivera Spatial and seasonal variations in evapotranspiration over Canada's landmass |
topic_facet |
envir geo |
description |
A 30 yr (1979–2008) dataset of actual evapotranspiration (ET) at 1 km resolution was generated over Canada's landmass by integrating remote sensing land surface data and gridded climate data using the EALCO model run at a 30 min time step. This long-term high-resolution dataset was used to characterize the spatiotemporal variations in ET across Canada. The results show that annual ET varied from 600 mm yr−1 over several regions in the south to less than 100 mm yr−1 in the northern Arctic. Nationally, ET in summer (i.e., June to August) comprised 65% of the annual total amount. ET in the cold season remained mostly below 10 mm month−1 over the country. Negative monthly ET was obtained over the Arctic region in winter, indicating EALCO simulated a larger amount of condensation than ET. Overall, the mean ET over the entire Canadian landmass for the 30 yr was 239 mm yr−1, or 44% of its corresponding precipitation. Comparisons of available ET studies in Canada revealed large uncertainties in ET estimates associated with using different approaches. The scarcity of ET measurements for the diverse ecosystems in Canada remains a significant challenge for reducing the uncertainties; this gap needs to be addressed in future studies to improve capabilities in climate/weather modeling and water resource management. |
format |
Article in Journal/Newspaper |
author |
S. Wang Y. Yang Y. Luo A. Rivera |
author_facet |
S. Wang Y. Yang Y. Luo A. Rivera |
author_sort |
S. Wang |
title |
Spatial and seasonal variations in evapotranspiration over Canada's landmass |
title_short |
Spatial and seasonal variations in evapotranspiration over Canada's landmass |
title_full |
Spatial and seasonal variations in evapotranspiration over Canada's landmass |
title_fullStr |
Spatial and seasonal variations in evapotranspiration over Canada's landmass |
title_full_unstemmed |
Spatial and seasonal variations in evapotranspiration over Canada's landmass |
title_sort |
spatial and seasonal variations in evapotranspiration over canada's landmass |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/hess-17-3561-2013 http://www.hydrol-earth-syst-sci.net/17/3561/2013/hess-17-3561-2013.pdf https://doaj.org/article/acf30681c6df4d219169596ff1eb653b |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Hydrology and Earth System Sciences, Vol 17, Iss 9, Pp 3561-3575 (2013) |
op_relation |
doi:10.5194/hess-17-3561-2013 1027-5606 1607-7938 http://www.hydrol-earth-syst-sci.net/17/3561/2013/hess-17-3561-2013.pdf https://doaj.org/article/acf30681c6df4d219169596ff1eb653b |
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op_doi |
https://doi.org/10.5194/hess-17-3561-2013 |
container_title |
Hydrology and Earth System Sciences |
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17 |
container_issue |
9 |
container_start_page |
3561 |
op_container_end_page |
3575 |
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