Spatial extent of thermokarst lagoons along pan-Arctic coasts - an upscaling approach

DOI

Along the ice rich pan-Arctic permafrost coasts thermokarst lagoons are a common landscape feature. These lagoons form when thermokarst lakes are inundated permanently or intermittently by the sea. This is the first estimation of the area of pan-Arctic thermokarst lagoons based on the mapping of 79 lagoons in 5 representative arctic regions: Mackenzie Delta (CA), Theshekpuk Lake coast (USA), Baldwin Peninsula (USA), Tiksi coast (RU), Lena Delta (RU). The extent of each of the lagoons was determined using the Global Surface Water dataset which is based on Landsat-5, -7, and -8 satellite images from 1984 to 2018 at 30m resolution (Pekel et al., 2016). Water bodies were defined by a water occurrence threshold of >75% over this time period. The raster dataset was vectorized and smaller geometric errors, which occurred during vectorization, were solved with the Fix Geometry function in QGIS3.6. The lagoon polygons were selected manually and these water bodies were split from the ocean by using the function “split by line”. The calculation of the polygon area is based on the re-projection in EPSG:32608, EPSG:26905, EPSG:32604, EPSG:32652 for Mackenzie Delta, Teshekpuk Lake coast, Baldwin Peninsula, Tiksi and Lena Delta coast respectively. The lagoon selection is based on the published dataset https://doi.org/10.1594/PANGAEA.934158. The dataset consists of a polygon shape file for the 79 extracted thermokarst lagoons, a point shape file with coordinates for all lagoons and a data sheet.

Identifier
DOI https://doi.org/10.1594/PANGAEA.948267
Related Identifier IsSupplementTo https://doi.org/10.1111/gcb.16649
Related Identifier References https://doi.org/10.1594/PANGAEA.934158
Related Identifier References https://doi.org/10.1038/nature20584
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.948267
Provenance
Creator Jenrich, Maren ORCID logo; Nitze, Ingmar ORCID logo; Laboor, Sebastian ORCID logo; Angelopoulos, Michael ORCID logo; Grosse, Guido ORCID logo; Strauss, Jens ORCID logo
Publisher PANGAEA
Publication Year 2023
Funding Reference Federal Ministry of Education and Research https://doi.org/10.13039/501100002347 Crossref Funder ID 03F0764B https://foerderportal.bund.de/foekat/jsp/SucheAction.do?actionMode=view&fkz=03F0764B Verbundprojekt: WTZ Russland - KoPf; Kohlenstoffumsatz und Treibhausgasfreisetzung aus tauendem Permafrost Nordostsibiriens unter sich ändernden Umwelt- und Klimabedingungen; Federal Ministry of Education and Research https://doi.org/10.13039/501100002347 Crossref Funder ID 03F0764F https://foerderportal.bund.de/foekat/jsp/SucheAction.do?actionMode=view&fkz=03F0764F Verbundprojekt: WTZ Russland - KoPf; Kohlenstoffumsatz und Treibhausgasfreisetzung aus tauendem Permafrost Nordostsibiriens unter sich ändernden Umwelt- und Klimabedingungen; Federal Ministry of Education and Research https://doi.org/10.13039/501100002347 Crossref Funder ID 03F0806A https://foerderportal.bund.de/foekat/jsp/SucheAction.do?actionMode=view&fkz=03F0806A WTZ Großbritannien: CACOON - Veränderung des arktischen Kohlenstoffkreislaufs im küstennahen Ozean; Natural Environment Research Council https://doi.org/10.13039/501100000270 Crossref Funder ID NE/R012806/1 Changing Arctic Carbon cycle in the cOastal Ocean Near-shore; Seventh Framework Programme https://doi.org/10.13039/100011102 Crossref Funder ID 338335 https://cordis.europa.eu/project/id/338335 Rapid Permafrost Thaw in a Warming Arctic and Impacts on the Soil Organic Carbon Pool
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 6 data points
Discipline Earth System Research
Spatial Coverage (-134.493W, 69.469S, 126.304E, 73.408N)
Temporal Coverage Begin 1984-01-01T00:00:00Z
Temporal Coverage End 2018-12-31T00:00:00Z