Subnivean Arctic and sub-Arctic net ecosystem exchange (NEE)
In the Arctic and sub-Arctic, up to half of annual net ecosystem exchange (NEE) occurs during the snow season. Subnivean soil respiration can persist at a greater rate when the overlying snowpack has a lower thermal conductivity, and the rate of photosynthetic uptake at the start and end of the snow...
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crsagepubl:10.1177/0309133313491130 2023-05-15T14:52:04+02:00 Subnivean Arctic and sub-Arctic net ecosystem exchange (NEE) Towards representing snow season processes in models of NEE using cryospheric remote sensing Luus, Kristina A. Lin, John C. Kelly, Richard E.J. Duguay, Claude R. 2013 http://dx.doi.org/10.1177/0309133313491130 http://journals.sagepub.com/doi/pdf/10.1177/0309133313491130 http://journals.sagepub.com/doi/full-xml/10.1177/0309133313491130 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license Progress in Physical Geography: Earth and Environment volume 37, issue 4, page 484-515 ISSN 0309-1333 1477-0296 General Earth and Planetary Sciences Earth and Planetary Sciences (miscellaneous) Geography, Planning and Development journal-article 2013 crsagepubl https://doi.org/10.1177/0309133313491130 2022-04-14T04:51:15Z In the Arctic and sub-Arctic, up to half of annual net ecosystem exchange (NEE) occurs during the snow season. Subnivean soil respiration can persist at a greater rate when the overlying snowpack has a lower thermal conductivity, and the rate of photosynthetic uptake at the start and end of the snow season can be diminished by fractional snow cover. Although recent studies have indicated that uncertainty in model estimates of NEE can be reduced by representing the influence of a modeled snowpack on soil respiration, models of NEE have not represented the influence of snowpack dynamics on processes such as subnivean photosynthesis or CO 2 diffusivity, and have not used remote sensing observations to characterize snow season processes. We therefore: (1) review snow season processes and their effects on NEE; (2) assess the suitability of cryospheric remote sensing approaches for models of NEE; and (3) suggest strategies for representing snow season processes in models of NEE. Strategies include: using observations of fractional snow cover in spring and fall to restrict estimates of photosynthetic uptake; combining observations of snow accumulation and soil freeze/thaw with observations of air temperature to generate more realistic estimates of soil temperature and soil respiration; and using observations of depth to estimate the influence of snow accumulation and tree wells on soil respiration. Including remote sensing observations of snow properties in models of NEE could reduce uncertainty in snow season estimates of NEE, resulting in a better understanding of the northern carbon cycle and how it is responding to climate-driven changes in the interconnected biospheric, atmospheric and cryospheric systems. Article in Journal/Newspaper Arctic SAGE Publications (via Crossref) Arctic Progress in Physical Geography: Earth and Environment 37 4 484 515 |
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Open Polar |
collection |
SAGE Publications (via Crossref) |
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crsagepubl |
language |
English |
topic |
General Earth and Planetary Sciences Earth and Planetary Sciences (miscellaneous) Geography, Planning and Development |
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General Earth and Planetary Sciences Earth and Planetary Sciences (miscellaneous) Geography, Planning and Development Luus, Kristina A. Lin, John C. Kelly, Richard E.J. Duguay, Claude R. Subnivean Arctic and sub-Arctic net ecosystem exchange (NEE) |
topic_facet |
General Earth and Planetary Sciences Earth and Planetary Sciences (miscellaneous) Geography, Planning and Development |
description |
In the Arctic and sub-Arctic, up to half of annual net ecosystem exchange (NEE) occurs during the snow season. Subnivean soil respiration can persist at a greater rate when the overlying snowpack has a lower thermal conductivity, and the rate of photosynthetic uptake at the start and end of the snow season can be diminished by fractional snow cover. Although recent studies have indicated that uncertainty in model estimates of NEE can be reduced by representing the influence of a modeled snowpack on soil respiration, models of NEE have not represented the influence of snowpack dynamics on processes such as subnivean photosynthesis or CO 2 diffusivity, and have not used remote sensing observations to characterize snow season processes. We therefore: (1) review snow season processes and their effects on NEE; (2) assess the suitability of cryospheric remote sensing approaches for models of NEE; and (3) suggest strategies for representing snow season processes in models of NEE. Strategies include: using observations of fractional snow cover in spring and fall to restrict estimates of photosynthetic uptake; combining observations of snow accumulation and soil freeze/thaw with observations of air temperature to generate more realistic estimates of soil temperature and soil respiration; and using observations of depth to estimate the influence of snow accumulation and tree wells on soil respiration. Including remote sensing observations of snow properties in models of NEE could reduce uncertainty in snow season estimates of NEE, resulting in a better understanding of the northern carbon cycle and how it is responding to climate-driven changes in the interconnected biospheric, atmospheric and cryospheric systems. |
format |
Article in Journal/Newspaper |
author |
Luus, Kristina A. Lin, John C. Kelly, Richard E.J. Duguay, Claude R. |
author_facet |
Luus, Kristina A. Lin, John C. Kelly, Richard E.J. Duguay, Claude R. |
author_sort |
Luus, Kristina A. |
title |
Subnivean Arctic and sub-Arctic net ecosystem exchange (NEE) |
title_short |
Subnivean Arctic and sub-Arctic net ecosystem exchange (NEE) |
title_full |
Subnivean Arctic and sub-Arctic net ecosystem exchange (NEE) |
title_fullStr |
Subnivean Arctic and sub-Arctic net ecosystem exchange (NEE) |
title_full_unstemmed |
Subnivean Arctic and sub-Arctic net ecosystem exchange (NEE) |
title_sort |
subnivean arctic and sub-arctic net ecosystem exchange (nee) |
publisher |
SAGE Publications |
publishDate |
2013 |
url |
http://dx.doi.org/10.1177/0309133313491130 http://journals.sagepub.com/doi/pdf/10.1177/0309133313491130 http://journals.sagepub.com/doi/full-xml/10.1177/0309133313491130 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Progress in Physical Geography: Earth and Environment volume 37, issue 4, page 484-515 ISSN 0309-1333 1477-0296 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1177/0309133313491130 |
container_title |
Progress in Physical Geography: Earth and Environment |
container_volume |
37 |
container_issue |
4 |
container_start_page |
484 |
op_container_end_page |
515 |
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1766323200131596288 |