Wet tundra polygon centers and distance between polygon centroids on Samoylov Island, Lena Delta, Siberia, Russia, with links to shape files ...
Subgrid processes occur in various ecosystems and landscapes but, because of their small scale, they are not represented or poorly parameterized in climate models. These local heterogeneities are often important or even fundamental for energy and carbon balances. This is especially true for northern...
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Online Access: | https://dx.doi.org/10.1594/pangaea.818292 https://doi.pangaea.de/10.1594/PANGAEA.818292 |
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ftdatacite:10.1594/pangaea.818292 2024-02-27T08:38:18+00:00 Wet tundra polygon centers and distance between polygon centroids on Samoylov Island, Lena Delta, Siberia, Russia, with links to shape files ... Cresto-Aleina, Fabio Brovkin, Victor Muster, Sina Boike, Julia Kutzbach, Lars Sachs, Torsten Zuyev, Sergey 2013 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.818292 https://doi.pangaea.de/10.1594/PANGAEA.818292 en eng PANGAEA https://dx.doi.org/10.5194/esd-4-187-2013 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 Arctic Tundra island File content Uniform resource locator/link to file Multiple investigations Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn dataset Supplementary Dataset Dataset 2013 ftdatacite https://doi.org/10.1594/pangaea.81829210.5194/esd-4-187-2013 2024-02-01T15:53:51Z Subgrid processes occur in various ecosystems and landscapes but, because of their small scale, they are not represented or poorly parameterized in climate models. These local heterogeneities are often important or even fundamental for energy and carbon balances. This is especially true for northern peatlands and in particular for the polygonal tundra, where methane emissions are strongly influenced by spatial soil heterogeneities. We present a stochastic model for the surface topography of polygonal tundra using Poisson–Voronoi diagrams and we compare the results with available recent field studies. We analyze seasonal dynamics of water table variations and the landscape response under different scenarios of precipitation income. We upscale methane fluxes by using a simple idealized model for methane emission. Hydraulic interconnectivities and large-scale drainage may also be investigated through percolation properties and thresholds in the Voronoi graph. The model captures the main statistical ... : Selected polygon centers characterized by wet tundra were mapped from visible and near-infrared aerial photography from summer 2008 with a resolution of 0.18 m. Polygon area was calculated in ArcGIS 10 in m**2. Polygon centroids were calculated in ArcGIS 10. Distance between centroids was mapped as the distance to the nearest centroid in m. Data was used to tune the polygon statistics (polygon area, area of rims between polygons) in the stochastic model. ... Dataset Arctic lena delta permafrost Tundra Siberia DataCite Metadata Store (German National Library of Science and Technology) Arctic |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Arctic Tundra island File content Uniform resource locator/link to file Multiple investigations Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn |
spellingShingle |
Arctic Tundra island File content Uniform resource locator/link to file Multiple investigations Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn Cresto-Aleina, Fabio Brovkin, Victor Muster, Sina Boike, Julia Kutzbach, Lars Sachs, Torsten Zuyev, Sergey Wet tundra polygon centers and distance between polygon centroids on Samoylov Island, Lena Delta, Siberia, Russia, with links to shape files ... |
topic_facet |
Arctic Tundra island File content Uniform resource locator/link to file Multiple investigations Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn |
description |
Subgrid processes occur in various ecosystems and landscapes but, because of their small scale, they are not represented or poorly parameterized in climate models. These local heterogeneities are often important or even fundamental for energy and carbon balances. This is especially true for northern peatlands and in particular for the polygonal tundra, where methane emissions are strongly influenced by spatial soil heterogeneities. We present a stochastic model for the surface topography of polygonal tundra using Poisson–Voronoi diagrams and we compare the results with available recent field studies. We analyze seasonal dynamics of water table variations and the landscape response under different scenarios of precipitation income. We upscale methane fluxes by using a simple idealized model for methane emission. Hydraulic interconnectivities and large-scale drainage may also be investigated through percolation properties and thresholds in the Voronoi graph. The model captures the main statistical ... : Selected polygon centers characterized by wet tundra were mapped from visible and near-infrared aerial photography from summer 2008 with a resolution of 0.18 m. Polygon area was calculated in ArcGIS 10 in m**2. Polygon centroids were calculated in ArcGIS 10. Distance between centroids was mapped as the distance to the nearest centroid in m. Data was used to tune the polygon statistics (polygon area, area of rims between polygons) in the stochastic model. ... |
format |
Dataset |
author |
Cresto-Aleina, Fabio Brovkin, Victor Muster, Sina Boike, Julia Kutzbach, Lars Sachs, Torsten Zuyev, Sergey |
author_facet |
Cresto-Aleina, Fabio Brovkin, Victor Muster, Sina Boike, Julia Kutzbach, Lars Sachs, Torsten Zuyev, Sergey |
author_sort |
Cresto-Aleina, Fabio |
title |
Wet tundra polygon centers and distance between polygon centroids on Samoylov Island, Lena Delta, Siberia, Russia, with links to shape files ... |
title_short |
Wet tundra polygon centers and distance between polygon centroids on Samoylov Island, Lena Delta, Siberia, Russia, with links to shape files ... |
title_full |
Wet tundra polygon centers and distance between polygon centroids on Samoylov Island, Lena Delta, Siberia, Russia, with links to shape files ... |
title_fullStr |
Wet tundra polygon centers and distance between polygon centroids on Samoylov Island, Lena Delta, Siberia, Russia, with links to shape files ... |
title_full_unstemmed |
Wet tundra polygon centers and distance between polygon centroids on Samoylov Island, Lena Delta, Siberia, Russia, with links to shape files ... |
title_sort |
wet tundra polygon centers and distance between polygon centroids on samoylov island, lena delta, siberia, russia, with links to shape files ... |
publisher |
PANGAEA |
publishDate |
2013 |
url |
https://dx.doi.org/10.1594/pangaea.818292 https://doi.pangaea.de/10.1594/PANGAEA.818292 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic lena delta permafrost Tundra Siberia |
genre_facet |
Arctic lena delta permafrost Tundra Siberia |
op_relation |
https://dx.doi.org/10.5194/esd-4-187-2013 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_doi |
https://doi.org/10.1594/pangaea.81829210.5194/esd-4-187-2013 |
_version_ |
1792045213314711552 |