The Boreal–Arctic Wetland and Lake Dataset (BAWLD)
Methane emissions from boreal and arctic wetlands, lakes, and rivers are expected to increase in response to warming and associated permafrost thaw. However, the lack of appropriate land cover datasets for scaling field-measured methane emissions to circumpolar scales has contributed to a large unce...
Published in: | Earth System Science Data |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Copernicus Publications
2021
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Online Access: | https://doi.org/10.5194/essd-13-5127-2021 https://essd.copernicus.org/articles/13/5127/2021/essd-13-5127-2021.pdf https://doaj.org/article/52b5da0f52cb481395efcc6ac1b6641a |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:52b5da0f52cb481395efcc6ac1b6641a 2023-05-15T14:56:34+02:00 The Boreal–Arctic Wetland and Lake Dataset (BAWLD) D. Olefeldt M. Hovemyr M. A. Kuhn D. Bastviken T. J. Bohn J. Connolly P. Crill E. S. Euskirchen S. A. Finkelstein H. Genet G. Grosse L. I. Harris L. Heffernan M. Helbig G. Hugelius R. Hutchins S. Juutinen M. J. Lara A. Malhotra K. Manies A. D. McGuire S. M. Natali J. A. O'Donnell F.-J. W. Parmentier A. Räsänen C. Schädel O. Sonnentag M. Strack S. E. Tank C. Treat R. K. Varner T. Virtanen R. K. Warren J. D. Watts 2021-11-01 https://doi.org/10.5194/essd-13-5127-2021 https://essd.copernicus.org/articles/13/5127/2021/essd-13-5127-2021.pdf https://doaj.org/article/52b5da0f52cb481395efcc6ac1b6641a en eng Copernicus Publications doi:10.5194/essd-13-5127-2021 1866-3508 1866-3516 https://essd.copernicus.org/articles/13/5127/2021/essd-13-5127-2021.pdf https://doaj.org/article/52b5da0f52cb481395efcc6ac1b6641a undefined Earth System Science Data, Vol 13, Pp 5127-5149 (2021) envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2021 fttriple https://doi.org/10.5194/essd-13-5127-2021 2023-01-22T17:50:04Z Methane emissions from boreal and arctic wetlands, lakes, and rivers are expected to increase in response to warming and associated permafrost thaw. However, the lack of appropriate land cover datasets for scaling field-measured methane emissions to circumpolar scales has contributed to a large uncertainty for our understanding of present-day and future methane emissions. Here we present the Boreal–Arctic Wetland and Lake Dataset (BAWLD), a land cover dataset based on an expert assessment, extrapolated using random forest modelling from available spatial datasets of climate, topography, soils, permafrost conditions, vegetation, wetlands, and surface water extents and dynamics. In BAWLD, we estimate the fractional coverage of five wetland, seven lake, and three river classes within 0.5 × 0.5∘ grid cells that cover the northern boreal and tundra biomes (17 % of the global land surface). Land cover classes were defined using criteria that ensured distinct methane emissions among classes, as indicated by a co-developed comprehensive dataset of methane flux observations. In BAWLD, wetlands occupied 3.2 × 106 km2 (14 % of domain) with a 95 % confidence interval between 2.8 and 3.8 × 106 km2. Bog, fen, and permafrost bog were the most abundant wetland classes, covering ∼ 28 % each of the total wetland area, while the highest-methane-emitting marsh and tundra wetland classes occupied 5 % and 12 %, respectively. Lakes, defined to include all lentic open-water ecosystems regardless of size, covered 1.4 × 106 km2 (6 % of domain). Low-methane-emitting large lakes (>10 km2) and glacial lakes jointly represented 78 % of the total lake area, while high-emitting peatland and yedoma lakes covered 18 % and 4 %, respectively. Small (<0.1 km2) glacial, peatland, and yedoma lakes combined covered 17 % of the total lake area but contributed disproportionally to the overall spatial uncertainty in lake area with a 95 % confidence interval between 0.15 and 0.38 × 106 km2. Rivers and streams were estimated to cover 0.12 × 106 km2 ... Article in Journal/Newspaper Arctic permafrost Tundra Unknown Arctic Earth System Science Data 13 11 5127 5149 |
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English |
topic |
envir geo |
spellingShingle |
envir geo D. Olefeldt M. Hovemyr M. A. Kuhn D. Bastviken T. J. Bohn J. Connolly P. Crill E. S. Euskirchen S. A. Finkelstein H. Genet G. Grosse L. I. Harris L. Heffernan M. Helbig G. Hugelius R. Hutchins S. Juutinen M. J. Lara A. Malhotra K. Manies A. D. McGuire S. M. Natali J. A. O'Donnell F.-J. W. Parmentier A. Räsänen C. Schädel O. Sonnentag M. Strack S. E. Tank C. Treat R. K. Varner T. Virtanen R. K. Warren J. D. Watts The Boreal–Arctic Wetland and Lake Dataset (BAWLD) |
topic_facet |
envir geo |
description |
Methane emissions from boreal and arctic wetlands, lakes, and rivers are expected to increase in response to warming and associated permafrost thaw. However, the lack of appropriate land cover datasets for scaling field-measured methane emissions to circumpolar scales has contributed to a large uncertainty for our understanding of present-day and future methane emissions. Here we present the Boreal–Arctic Wetland and Lake Dataset (BAWLD), a land cover dataset based on an expert assessment, extrapolated using random forest modelling from available spatial datasets of climate, topography, soils, permafrost conditions, vegetation, wetlands, and surface water extents and dynamics. In BAWLD, we estimate the fractional coverage of five wetland, seven lake, and three river classes within 0.5 × 0.5∘ grid cells that cover the northern boreal and tundra biomes (17 % of the global land surface). Land cover classes were defined using criteria that ensured distinct methane emissions among classes, as indicated by a co-developed comprehensive dataset of methane flux observations. In BAWLD, wetlands occupied 3.2 × 106 km2 (14 % of domain) with a 95 % confidence interval between 2.8 and 3.8 × 106 km2. Bog, fen, and permafrost bog were the most abundant wetland classes, covering ∼ 28 % each of the total wetland area, while the highest-methane-emitting marsh and tundra wetland classes occupied 5 % and 12 %, respectively. Lakes, defined to include all lentic open-water ecosystems regardless of size, covered 1.4 × 106 km2 (6 % of domain). Low-methane-emitting large lakes (>10 km2) and glacial lakes jointly represented 78 % of the total lake area, while high-emitting peatland and yedoma lakes covered 18 % and 4 %, respectively. Small (<0.1 km2) glacial, peatland, and yedoma lakes combined covered 17 % of the total lake area but contributed disproportionally to the overall spatial uncertainty in lake area with a 95 % confidence interval between 0.15 and 0.38 × 106 km2. Rivers and streams were estimated to cover 0.12 × 106 km2 ... |
format |
Article in Journal/Newspaper |
author |
D. Olefeldt M. Hovemyr M. A. Kuhn D. Bastviken T. J. Bohn J. Connolly P. Crill E. S. Euskirchen S. A. Finkelstein H. Genet G. Grosse L. I. Harris L. Heffernan M. Helbig G. Hugelius R. Hutchins S. Juutinen M. J. Lara A. Malhotra K. Manies A. D. McGuire S. M. Natali J. A. O'Donnell F.-J. W. Parmentier A. Räsänen C. Schädel O. Sonnentag M. Strack S. E. Tank C. Treat R. K. Varner T. Virtanen R. K. Warren J. D. Watts |
author_facet |
D. Olefeldt M. Hovemyr M. A. Kuhn D. Bastviken T. J. Bohn J. Connolly P. Crill E. S. Euskirchen S. A. Finkelstein H. Genet G. Grosse L. I. Harris L. Heffernan M. Helbig G. Hugelius R. Hutchins S. Juutinen M. J. Lara A. Malhotra K. Manies A. D. McGuire S. M. Natali J. A. O'Donnell F.-J. W. Parmentier A. Räsänen C. Schädel O. Sonnentag M. Strack S. E. Tank C. Treat R. K. Varner T. Virtanen R. K. Warren J. D. Watts |
author_sort |
D. Olefeldt |
title |
The Boreal–Arctic Wetland and Lake Dataset (BAWLD) |
title_short |
The Boreal–Arctic Wetland and Lake Dataset (BAWLD) |
title_full |
The Boreal–Arctic Wetland and Lake Dataset (BAWLD) |
title_fullStr |
The Boreal–Arctic Wetland and Lake Dataset (BAWLD) |
title_full_unstemmed |
The Boreal–Arctic Wetland and Lake Dataset (BAWLD) |
title_sort |
boreal–arctic wetland and lake dataset (bawld) |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/essd-13-5127-2021 https://essd.copernicus.org/articles/13/5127/2021/essd-13-5127-2021.pdf https://doaj.org/article/52b5da0f52cb481395efcc6ac1b6641a |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost Tundra |
genre_facet |
Arctic permafrost Tundra |
op_source |
Earth System Science Data, Vol 13, Pp 5127-5149 (2021) |
op_relation |
doi:10.5194/essd-13-5127-2021 1866-3508 1866-3516 https://essd.copernicus.org/articles/13/5127/2021/essd-13-5127-2021.pdf https://doaj.org/article/52b5da0f52cb481395efcc6ac1b6641a |
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undefined |
op_doi |
https://doi.org/10.5194/essd-13-5127-2021 |
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Earth System Science Data |
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13 |
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