Microtopographic and Depth Controls on Active Layer Chemistry in Arctic Polygonal Ground: Supporting Data
Polygonal ground is a signature characteristic of the Arctic, and permafrost thaw can potentially generate substantial feedbacks to Arctic ecosystems and climate. This study describes the first comprehensive spatial examination of active layer biogeochemistry that extends across high- and low-center...
Main Authors: | , |
---|---|
Language: | unknown |
Published: |
2022
|
Subjects: | |
Online Access: | http://www.osti.gov/servlets/purl/1164833 https://www.osti.gov/biblio/1164833 https://doi.org/10.5440/1164833 |
id |
ftosti:oai:osti.gov:1164833 |
---|---|
record_format |
openpolar |
spelling |
ftosti:oai:osti.gov:1164833 2023-07-30T04:00:20+02:00 Microtopographic and Depth Controls on Active Layer Chemistry in Arctic Polygonal Ground: Supporting Data Throckmorton, Heather Newman, Brent 2022-10-10 application/pdf http://www.osti.gov/servlets/purl/1164833 https://www.osti.gov/biblio/1164833 https://doi.org/10.5440/1164833 unknown http://www.osti.gov/servlets/purl/1164833 https://www.osti.gov/biblio/1164833 https://doi.org/10.5440/1164833 doi:10.5440/1164833 54 Environmental Sciences 2022 ftosti https://doi.org/10.5440/1164833 2023-07-11T08:58:07Z Polygonal ground is a signature characteristic of the Arctic, and permafrost thaw can potentially generate substantial feedbacks to Arctic ecosystems and climate. This study describes the first comprehensive spatial examination of active layer biogeochemistry that extends across high- and low-centered polygons and their features, including depth. Water chemistry measurements were made on active layer water samples collected near Barrow, Alaska during summer, 2012. Several significant differences in chemistry were observed between high- and low-centered polygons suggesting polygon types may be useful for landscape-scale geochemical classification. However, differences were found for polygon features (centers and troughs) for analytes that were not significant for type, suggesting that finer scale features control biogeochemistry in a different way than polygon type. Depth variations were also significant, demonstrating important multi-dimensional aspects of polygonal ground biogeochemistry. These results have major implications for understanding how polygonal ground ecosystems function, and how they may respond to future change. The Next-Generation Ecosystem Experiments: Arctic (NGEE Arctic), was a research effort to reduce uncertainty in Earth System Models by developing a predictive understanding of carbon-rich Arctic ecosystems and feedbacks to climate. NGEE Arctic was supported by the Department of Energy's Office of Biological and Environmental Research. The NGEE Arctic project had two field research sites: 1) located within the Arctic polygonal tundra coastal region on the Barrow Environmental Observatory (BEO) and the North Slope near Utqiagvik (Barrow), Alaska and 2) multiple areas on the discontinuous permafrost region of the Seward Peninsula north of Nome, Alaska. Through observations, experiments, and synthesis with existing datasets, NGEE Arctic provided an enhanced knowledge base for multi-scale modeling and contributed to improved process representation at global pan-Arctic scales within the ... Other/Unknown Material Arctic Barrow Nome north slope permafrost Seward Peninsula Tundra Alaska SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Arctic |
institution |
Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
54 Environmental Sciences |
spellingShingle |
54 Environmental Sciences Throckmorton, Heather Newman, Brent Microtopographic and Depth Controls on Active Layer Chemistry in Arctic Polygonal Ground: Supporting Data |
topic_facet |
54 Environmental Sciences |
description |
Polygonal ground is a signature characteristic of the Arctic, and permafrost thaw can potentially generate substantial feedbacks to Arctic ecosystems and climate. This study describes the first comprehensive spatial examination of active layer biogeochemistry that extends across high- and low-centered polygons and their features, including depth. Water chemistry measurements were made on active layer water samples collected near Barrow, Alaska during summer, 2012. Several significant differences in chemistry were observed between high- and low-centered polygons suggesting polygon types may be useful for landscape-scale geochemical classification. However, differences were found for polygon features (centers and troughs) for analytes that were not significant for type, suggesting that finer scale features control biogeochemistry in a different way than polygon type. Depth variations were also significant, demonstrating important multi-dimensional aspects of polygonal ground biogeochemistry. These results have major implications for understanding how polygonal ground ecosystems function, and how they may respond to future change. The Next-Generation Ecosystem Experiments: Arctic (NGEE Arctic), was a research effort to reduce uncertainty in Earth System Models by developing a predictive understanding of carbon-rich Arctic ecosystems and feedbacks to climate. NGEE Arctic was supported by the Department of Energy's Office of Biological and Environmental Research. The NGEE Arctic project had two field research sites: 1) located within the Arctic polygonal tundra coastal region on the Barrow Environmental Observatory (BEO) and the North Slope near Utqiagvik (Barrow), Alaska and 2) multiple areas on the discontinuous permafrost region of the Seward Peninsula north of Nome, Alaska. Through observations, experiments, and synthesis with existing datasets, NGEE Arctic provided an enhanced knowledge base for multi-scale modeling and contributed to improved process representation at global pan-Arctic scales within the ... |
author |
Throckmorton, Heather Newman, Brent |
author_facet |
Throckmorton, Heather Newman, Brent |
author_sort |
Throckmorton, Heather |
title |
Microtopographic and Depth Controls on Active Layer Chemistry in Arctic Polygonal Ground: Supporting Data |
title_short |
Microtopographic and Depth Controls on Active Layer Chemistry in Arctic Polygonal Ground: Supporting Data |
title_full |
Microtopographic and Depth Controls on Active Layer Chemistry in Arctic Polygonal Ground: Supporting Data |
title_fullStr |
Microtopographic and Depth Controls on Active Layer Chemistry in Arctic Polygonal Ground: Supporting Data |
title_full_unstemmed |
Microtopographic and Depth Controls on Active Layer Chemistry in Arctic Polygonal Ground: Supporting Data |
title_sort |
microtopographic and depth controls on active layer chemistry in arctic polygonal ground: supporting data |
publishDate |
2022 |
url |
http://www.osti.gov/servlets/purl/1164833 https://www.osti.gov/biblio/1164833 https://doi.org/10.5440/1164833 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Barrow Nome north slope permafrost Seward Peninsula Tundra Alaska |
genre_facet |
Arctic Barrow Nome north slope permafrost Seward Peninsula Tundra Alaska |
op_relation |
http://www.osti.gov/servlets/purl/1164833 https://www.osti.gov/biblio/1164833 https://doi.org/10.5440/1164833 doi:10.5440/1164833 |
op_doi |
https://doi.org/10.5440/1164833 |
_version_ |
1772810842373357568 |