ALLena: Thaw depth measurements of the active layer in the Lena River Delta region from 1998 to 2022, Northeastern Siberia

Veremeeva, Alexandra; Morgenstern, Anne; Gottschalk, Milena; Jünger, Julia; Laboor, Sebastian; Abakumov, Evgeny; Adrian, Irina; Angelopoulos, Michael; Antonova, Sofia; Boike, Julia; Bornemann, Niko; Cherepanova, Alexandra; Evgrafova, Svetlana; Fedorov-Davydov, Dmitry; Fuchs, Matthias; Grigoriev, Mikhail N; Günther, Frank; Hugelius, Gustaf; Kizyakov, Alexander; Kut, Anna; Lashchinskiy, Nikolay; Lupachev, Alexey; Maksimov, Georgii T; Meyer, Hanno; Miesner, Frederieke; Minke, Merten; Nitzbon, Jan; Opel, Thomas; Overduin, Pier Paul; Ramage, Justine L; Liebner, Susanne; Polyakov, Vyacheslav I; Rivkina, Elizaveta; Runge, Alexandra; Schirrmeister, Lutz; Schwamborn, Georg; Siewert, Matthias Benjamin; Tarbeeva, Anna; Ulrich, Mathias; Wetterich, Sebastian; Zubrzycki, Sebastian; Grosse, Guido

Active layer thickness (ALT) is one of currently two Essential Climate Variables related directly to permafrost regions as defined by the Global Climate Observing System (GCOS) at the World Meteorological Organization (WMO). ALT is determined as the maximum thaw depth at the end of the thawing season and is being monitored across the Arctic to better understand climate change impacts on landscape, permafrost, hydrology, vegetation, and soil biogeochemistry. In addition, spatially and/or temporally distributed measurements of thaw depth (TD) in the active layer during the thawing period are often recorded during field work in permafrost regions for various research purposes and process understanding. The ALLena dataset presents a compilation of thaw depth (TD) measurements of the active layer in the Lena River Delta region based on published and unpublished field data collected during Russian and joint German-Russian expeditions from 1998 to 2022. The dataset contains data from different areas of the Lena Delta region with clustering in research-intensive areas, e.g. in the vicinity of Research Station Samoylov Island, but also includes sites adjacent to the delta such as Muostakh Island, Bykovsky Peninsula and Tiksi settlement surroundings. The compiled data is distributed across various ecosystems and geomorphological units underlain by different types of deposits and characterized by various relief positions, microtopography, soil and vegetation cover (e.g. active floodplains, polygonal tundra on Holocene Lena Delta terraces, remnants of Yedoma Ice Complex, etc.). TD measurements were conducted as opportunistic single as well as targeted TD transects or grid measurements. For some sites measurements of TD were repeated at the same locations in different years. TD was measured one time per site or several times per site within a few centimeters to several meters to capture small-scale heterogeneity depending on e.g. microcrotopography or vegetation type. This is the main datatable which contains discrete TD values if they were measured one to three times per site. In case of more than three TD values per measurement site, the datatable provides the minimum, maximum, and mean TD as well as the number of measurements that were averaged. For sites with more than three TD measurements per site, separate detailed tables are provided. The dataset presents a highly valuable compilation of TD data over a uniquely large Arctic region and long time span. It might complement the Circumpolar Active Layer Monitoring (CALM) program and other published ALT and TD datasets for other permafrost regions and may be used for e.g. parametrization or validation of permafrost modelling and remote sensing studies.

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Veremeeva, Alexandra

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欄位 值
Identifier DOI:10.1594/PANGAEA.973813
Project(s) Horizon 2020 (H2020), International Network for Terrestrial Research and Monitoring in the Arctic - INTERACT III
Institute AWI Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research
來源 https://doi.org/10.1594/PANGAEA.973813
Publication Date 2025-07-01
版本 1
Product ALT compilation Lena River Delta 1998-2022
Sensor Multiple investigations, Soil profile, Hand push corer, Sampling permafrost, Metal probe, Caliper/tape measure, Soil pit, SIPRE corer
Files
    Variables [Units]
    1. Event: Event label
    2. Data ID: Data ID
    3. Field ID: Field ID
    4. Date/Time: DATE/TIME
    5. QF date: Quality flag, date
    6. Location: Location
    7. Pos type: Positioning type/details
    8. Latitude: LATITUDE
    9. Longitude: LONGITUDE
    10. QF coord: Quality flag, coordinates
    11. Elevation: ELEVATION [m a.s.l.]
    12. Device: Device type
    13. Thaw depth: Thaw depth of active layer [cm]
    14. Thaw depth_2: Thaw depth of active layer [cm]
    15. Thaw depth_3: Thaw depth of active layer [cm]
    16. Thaw depth mean: Thaw depth of active layer, mean [cm]
    17. QF TD: Quality flag, thaw depth
    18. Thaw depth min: Thaw depth of active layer, minimum [cm]
    19. Thaw depth max: Thaw depth of active layer, maximum [cm]
    20. Method comm: Method comment
    21. NOBS: Number of observations [#]
    22. Sample comment: Sample comment
    23. Name: Name
    24. Microtopo: Microtopography
    25. Ground wetness descr: Ground wetness description
    26. Vegetation type: Vegetation type
    27. Geomorphology: Geomorphology
    28. Unit: Lithologic unit/sequence
    29. Area: Area/locality
    30. Publ data: Publication of data
    31. Data source: Data source
    32. Reference: Reference/source
    33. Reference_2: Reference/source
    34. Reference_3: Reference/source
    35. Campaign: Campaign
    36. Data author(s): Data author(s)
    37. Institution: Institution
    38. Name_2: Name
    39. Contact: Contact person
    40. Comment: Comment
    41. Measurement comm: Measurement comment
    42. Measurement type: Measurement type
    43. Add info: Additional information
    44. Add info_2: Additional information
    45. Add info_3: Additional information
    46. Add info_4: Additional information
    Region Northeastern Siberia
    Spatial Reference EPSG:4326 WGS 84
    Spatial Resolution
    Spatial Coverage Latitude 71.5549 to 73.528917, Longitude 123.363583 to 129.954183
    Temporal Coverage 1998-07-24T00:00:00 to: 2022-09-21T00:00:00
    Temporal Resolution
    格式 TAB, CSV
    Is Supplement To

    Veremeeva, Alexandra; Morgenstern, Anne; Gottschalk, Milena; Jünger, Julia; Laboor, Sebastian; Abakumov, Evgeny; Adrian, Irina; Angelopoulos, Michael; Antonova, Sofia; Boike, Julia; Bornemann, Niko; Cherepanova, Alexandra; Evgrafova, Svetlana; Fedorov-Davydov, Dmitry; Fuchs, Matthias; Grigoriev, Mikhail N; Günther, Frank; Hugelius, Gustaf; Kizyakov, Alexander; Kut, Anna; Lashchinskiy, Nikolay; Lupachev, Alexey; Maksimov, Georgii T; Meyer, Hanno; Miesner, Frederieke; Minke, Merten; Nitzbon, Jan; Opel, Thomas; Overduin, Pier Paul; Ramage, Justine L; Liebner, Susanne; Polyakov, Vyacheslav I; Rivkina, Elizaveta; Runge, Alexandra; Schirrmeister, Lutz; Schwamborn, Georg; Siewert, Matthias Benjamin; Tarbeeva, Anna; Ulrich, Mathias; Wetterich, Sebastian; Zubrzycki, Sebastian; Grosse, Guido (2025): ALLena: Compilation of thaw depth measurements of the active layer in the Lena River Delta region from 1998 to 2022, Northeastern Siberia [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.974408
    Related to

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    Dataset extent