de.pangaea.dataset968886 und dataset PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact 2026-06-17T16:57:59Z https://doi.pangaea.de/10.1594/PANGAEA.968886 <gco:CharacterString>Pan-Arctic thermokarst lagoon distribution, area and classification</gco:CharacterString> 2024-07-05T15:07:13 publication https://doi.org/10.1594/PANGAEA.968886 Jenrich, Maren
maren.jenrich@awi.de
https://orcid.org/0000-0002-1330-7461 information author Prodinger, Maria
Maria.prodinger@awi.de
author Nitze, Ingmar
ingmar.nitze@awi.de
https://orcid.org/0000-0002-1165-6852 information author Grosse, Guido
guido.grosse@awi.de
https://orcid.org/0000-0001-5895-2141 information author Strauss, Jens
Jens.Strauss@awi.de
https://orcid.org/0000-0003-4678-4982 information author PANGAEA
info@pangaea.de
https://www.pangaea.de/ information publisher tableDigital Thermokarst lagoons develop in permafrost lowlands along the ice-rich Arctic coast when thermokarst lakes or basins with bottom elevations at or below sea level are breached by the sea due to erosion, sea-level rise, or connection via drainage channels. Thermokarst lagoons, as dynamic landforms at the interface of terrestrial permafrost and marine systems, play a crucial role in the transformation of permafrost carbon under rising marine influence. Here we present a comprehensive dataset consisting of the first manual thermokarst lagoon area mapping, a more precise number of thermokarst lagoons and a detailed lagoon classification for thermokarst lagoons along the pan-Arctic coast from Taymyr Peninsula in Russia to the Tuktoyaktuk Peninsula in Canada. This is an updated dataset based on the previous work of Jenrich et al. 2021 and Jenrich et al. 2023. The main improvements include (1) counting thermokarst lagoons individually within a lagoon system, as long as the distinct round form of former lake basins is visible; (2) manually calculating the area for all mapped thermokarst lagoons based on the updated Global Surface Water Dataset from 1984-2021 by Pekel et al., 2016; and (3) classifying lagoons based on connectivity to the sea into 5 connectivity classes. We identified 520 thermokarst lagoons covering an area of 3457 km2. Methods: Pan-Arctic thermokarst lagoon distribution and area were mapped using QGIS version 3.34 and Google Earth Engine. The updated Global Surface Water Dataset by Pekel et al., 2016, based on Landsat-5, -7, and -8 satellite images from 1984-2021, was used to create masks with a threshold of >75% based on water occurrence, which enabled the manual splitting of polygons from the resulting mask vector data and extraction of thermokarst lagoon areas. Mapping and area extraction also relied on Sentinel-2 imagery from 2023/07/01-2023/08/30, basemaps Google Satellite and ESRI Satellite, and the digital elevation model ArcticDEM and its hillshade HSarcticDEM (Porter et al., 2018). The thermokarst lagoon classification employed a geomorphological approach based on Sentinel-2 imagery and basemaps Google Satellite and ESRI Satellite. Connectivity classes were visually defined and attributed to thermokarst lagoons based on: 1) the size of the lagoon opening relative to its overall size, 2) whether it was directly connected or subsequent within a lagoon system, and 3) interactivity within the lagoon system. The five classes range from 5 - very high connectivity to 1 - very low connectivity: 5 - Lagoon, always open (Lao) - Very high connectivity - Lagoon in direct exchange with the sea. 4 - Lagoon, mostly open (Lmo) - High connectivity - Barrier islands or sand spits only slightly block exchange with the sea or subsequent lagoon which is very well connected to the primary lagoon. 3 - Lagoon, semi-open (Lso) - Medium connectivity - Exchange limited either temporally or spatially due to barrier islands and sand spits or subsequent lagoon which is well connected to the primary lagoon. 2 - Lagoon, limited open (Llo) - Low connectivity - Exchange very limited due to very small opening or narrow channel or subsequent lagoon which is less connected to primary lagoon due to small channel or high distance. 1 - Lagoon, nearly-closed (Lnc) - Very low connectivity - Exchange strongly limited due to long and narrow channel, or subsequent lagoon with very limited exchange. Temporary lake characteristics are possible. completed Jenrich, Maren
maren.jenrich@awi.de
https://orcid.org/0000-0002-1330-7461 information principalInvestigator Classification connectivity lagoon size Permafrost coasts shapefile Thermokarst Lagoon theme <gco:CharacterString>PANGAEA Keyword List</gco:CharacterString> 1995-01-01 creation PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact KoPF Carbon in Permafrost / Kohlenstoff im Permafrost CACOON Changing Arctic Carbon cycle in the cOastal Ocean Near-shore PETA-CARB Rapid Permafrost Thaw in a Warming Arctic and Impacts on the Soil Organic Carbon Pool theme <gco:CharacterString>PANGAEA Project List</gco:CharacterString> 1995-01-01 creation PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-4.0: Creative Commons Attribution 4.0 International textTable und geoscientificInformation -134.493 126.304 69.469 73.408 1984-01-01T00:00:00 2021-12-31T00:00:00 File content thematicClassification Binary Object thematicClassification Binary Object (File Size) physicalMeasurement Bytes Bytes Comment thematicClassification text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.968886?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: Arctic_lagoons_1984-2021 * LATITUDE START: 73.408000 * LONGITUDE START: 126.304000 * LATITUDE END: 69.469000 * LONGITUDE END: -134.493000 * DATE/TIME START: 1984-01-01T00:00:00 * DATE/TIME END: 2021-12-31T00:00:00 * METHOD/DEVICE: Satellite imagery Landsat-5, -7, and -8 satellite images from 1984 to 2021 1984-01-01T00:00:00 Related to <gco:CharacterString>Distribution of lagoons along the Arctic coast from the Taimyr Peninsula in Russia to the Tuktoyaktuk Peninsula in Canada</gco:CharacterString> 2021-01-01 publication https://doi.org/10.1594/PANGAEA.934158 Jenrich, Maren
maren.jenrich@awi.de
https://orcid.org/0000-0002-1330-7461 information author Angelopoulos, Michael
michael.angelopoulos@tum.de
https://orcid.org/0000-0003-2574-5108 information author Overduin, Pier Paul
Paul.Overduin@awi.de
https://orcid.org/0000-0001-9849-4712 information author Nitze, Ingmar
ingmar.nitze@awi.de
https://orcid.org/0000-0002-1165-6852 information author Günther, Frank
guenther@hs-nb.de
https://orcid.org/0000-0001-8298-8937 information author Strauss, Jens
Jens.Strauss@awi.de
https://orcid.org/0000-0003-4678-4982 information author Westermann, Sebastian
Sebastian.Westermann@geo.uio.no
https://orcid.org/0000-0003-0514-4321 information author Schirrmeister, Lutz
lutz.schirrmeister@awi.de
https://orcid.org/0000-0001-9455-0596 information author Kholodov, Alexander L
alkholodov@alaska.edu
author Krautblatter, Michael
m.krautblatter@tum.de
https://orcid.org/0000-0002-2775-2742 information author Grigoriev, Mikhail N
migri@mail.rz
https://orcid.org/0000-0003-1997-9506 information author Grosse, Guido
guido.grosse@awi.de
https://orcid.org/0000-0001-5895-2141 information author documentDigital Related to <gco:CharacterString>Spatial extent of thermokarst lagoons along pan-Arctic coasts - an upscaling approach</gco:CharacterString> 2023-01-01 publication https://doi.org/10.1594/PANGAEA.948267 Jenrich, Maren
maren.jenrich@awi.de
https://orcid.org/0000-0002-1330-7461 information author Nitze, Ingmar
ingmar.nitze@awi.de
https://orcid.org/0000-0002-1165-6852 information author Laboor, Sebastian
sebastian.laboor@awi.de
https://orcid.org/0000-0003-4229-8418 information author Angelopoulos, Michael
michael.angelopoulos@tum.de
https://orcid.org/0000-0003-2574-5108 information author Grosse, Guido
guido.grosse@awi.de
https://orcid.org/0000-0001-5895-2141 information author Strauss, Jens
Jens.Strauss@awi.de
https://orcid.org/0000-0003-4678-4982 information author documentDigital References <gco:CharacterString>High-resolution mapping of global surface water and its long-term changes</gco:CharacterString> 2016-01-01 publication https://doi.org/10.1038/nature20584 Pekel, Jean-Francois https://orcid.org/0000-0002-9992-6385 information author Cottam, Andrew author Gorelick, Noel https://orcid.org/0000-0002-5548-2436 information author Belward, Alan S author documentDigital Nature 540(7633) 418-422 References <gco:CharacterString>ArcticDEM</gco:CharacterString> 2018-01-01 publication https://doi.org/10.7910/DVN/OHHUKH Porter, Claire author Morin, Paul
pauljmorin@gmail.com
author Howat, Ian M https://orcid.org/0000-0002-8072-6260 information author Noh, Myoung-Jong author Bates, Brian author Peterman, Kenneth author Keesey, Scott author Schlenk, Matthew author Gardiner, Judith author Tomko, Karen author Willis, Michael author Kelleher, Cole author Cloutier, Michael author Husby, Eric author Foga, Steven author Nakamura, Hitomi author Platson, Melisa author Wethington, Michael, Jr author Williamson, Cathleen author Bauer, Gregory author Enos, Jeremy author Arnold, Galen author Kramer, William author Becker, Peter author Doshi, Abhijit author D'Souza, Cristelle author Cummens, Pat author Laurier, Fabien author Bojesen, Mikkel author documentDigital Harvard Dataverse, V1