Quantifying regional surface energy responses to forest structural change in Nordic Fennoscandia
In a climate model, surface energy and water fluxes of the vegetated ecosystem largely depend on important structural attributes like leaf area index and canopy height. For forests, management can greatly alter these attributes with resulting consequences for the surface albedo, surface roughness, a...
Published in: | Journal of Geophysical Research: Atmospheres |
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ftoslouniv:oai:www.duo.uio.no:10852/82959 2023-05-15T16:11:45+02:00 Quantifying regional surface energy responses to forest structural change in Nordic Fennoscandia Kumkar, Yogesh Astrup, Rasmus Andreas Stordal, Frode Bright, Ryan M. 2020-07-27T14:57:36Z http://hdl.handle.net/10852/82959 http://urn.nb.no/URN:NBN:no-85752 https://doi.org/10.1029/2019JD032092 EN eng NFR/294948 http://urn.nb.no/URN:NBN:no-85752 Kumkar, Yogesh Astrup, Rasmus Andreas Stordal, Frode Bright, Ryan M. . Quantifying regional surface energy responses to forest structural change in Nordic Fennoscandia. Journal of Geophysical Research (JGR): Atmospheres. 2020, 125(15) http://hdl.handle.net/10852/82959 1820647 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Geophysical Research (JGR): Atmospheres&rft.volume=125&rft.spage=&rft.date=2020 Journal of Geophysical Research (JGR): Atmospheres 125 15 17 https://doi.org/10.1029/2019JD032092 URN:NBN:no-85752 Fulltext https://www.duo.uio.no/bitstream/handle/10852/82959/2/2020_10.1029.2019JD032092_oa.pdf Attribution-NonCommercial-NoDerivatives 4.0 International https://creativecommons.org/licenses/by-nc-nd/4.0/ CC-BY-NC-ND 2169-897X Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2020 ftoslouniv https://doi.org/10.1029/2019JD032092 2021-02-10T23:31:29Z In a climate model, surface energy and water fluxes of the vegetated ecosystem largely depend on important structural attributes like leaf area index and canopy height. For forests, management can greatly alter these attributes with resulting consequences for the surface albedo, surface roughness, and evapotranspiration. The sensitivity of surface energy and water budgets to alterations in forest structure is relatively unknown in boreal regions, particularly in Nordic Fennoscandia (Norway, Sweden, and Finland), where the forest management footprint is large. Here we perform offline simulations to quantify the sensitivity of surface heat and moisture fluxes to changes in forest composition and structure across daily, seasonal, and annual time scales. For the region on average, it is found that broadleaved deciduous forests cool the surface by 0.16 K annually and 0.3 K in the growing season owed to higher year‐round albedo and lower Bowen ratio, yet in some locations the local cooling can be as much as 2.4 K and 3.0 K, respectively. Moreover, fully developed forests cool the surface by 0.04 K annually in our domain owed to higher evapotranspiration, reaching up to 0.4 K locally in some locations, whereas undeveloped forests warm annually by 0.14 K owed to much lower evapotranspiration reaching up to 0.8 K for some locations. If regional forests are ever to be managed for the local climate regulation services that they provide, our results are an important first step illuminating the potential adverse impacts or benefits across space and time. Article in Journal/Newspaper Fennoscandia Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Norway Journal of Geophysical Research: Atmospheres 125 15 |
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Open Polar |
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Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
In a climate model, surface energy and water fluxes of the vegetated ecosystem largely depend on important structural attributes like leaf area index and canopy height. For forests, management can greatly alter these attributes with resulting consequences for the surface albedo, surface roughness, and evapotranspiration. The sensitivity of surface energy and water budgets to alterations in forest structure is relatively unknown in boreal regions, particularly in Nordic Fennoscandia (Norway, Sweden, and Finland), where the forest management footprint is large. Here we perform offline simulations to quantify the sensitivity of surface heat and moisture fluxes to changes in forest composition and structure across daily, seasonal, and annual time scales. For the region on average, it is found that broadleaved deciduous forests cool the surface by 0.16 K annually and 0.3 K in the growing season owed to higher year‐round albedo and lower Bowen ratio, yet in some locations the local cooling can be as much as 2.4 K and 3.0 K, respectively. Moreover, fully developed forests cool the surface by 0.04 K annually in our domain owed to higher evapotranspiration, reaching up to 0.4 K locally in some locations, whereas undeveloped forests warm annually by 0.14 K owed to much lower evapotranspiration reaching up to 0.8 K for some locations. If regional forests are ever to be managed for the local climate regulation services that they provide, our results are an important first step illuminating the potential adverse impacts or benefits across space and time. |
format |
Article in Journal/Newspaper |
author |
Kumkar, Yogesh Astrup, Rasmus Andreas Stordal, Frode Bright, Ryan M. |
spellingShingle |
Kumkar, Yogesh Astrup, Rasmus Andreas Stordal, Frode Bright, Ryan M. Quantifying regional surface energy responses to forest structural change in Nordic Fennoscandia |
author_facet |
Kumkar, Yogesh Astrup, Rasmus Andreas Stordal, Frode Bright, Ryan M. |
author_sort |
Kumkar, Yogesh |
title |
Quantifying regional surface energy responses to forest structural change in Nordic Fennoscandia |
title_short |
Quantifying regional surface energy responses to forest structural change in Nordic Fennoscandia |
title_full |
Quantifying regional surface energy responses to forest structural change in Nordic Fennoscandia |
title_fullStr |
Quantifying regional surface energy responses to forest structural change in Nordic Fennoscandia |
title_full_unstemmed |
Quantifying regional surface energy responses to forest structural change in Nordic Fennoscandia |
title_sort |
quantifying regional surface energy responses to forest structural change in nordic fennoscandia |
publishDate |
2020 |
url |
http://hdl.handle.net/10852/82959 http://urn.nb.no/URN:NBN:no-85752 https://doi.org/10.1029/2019JD032092 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_source |
2169-897X |
op_relation |
NFR/294948 http://urn.nb.no/URN:NBN:no-85752 Kumkar, Yogesh Astrup, Rasmus Andreas Stordal, Frode Bright, Ryan M. . Quantifying regional surface energy responses to forest structural change in Nordic Fennoscandia. Journal of Geophysical Research (JGR): Atmospheres. 2020, 125(15) http://hdl.handle.net/10852/82959 1820647 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Geophysical Research (JGR): Atmospheres&rft.volume=125&rft.spage=&rft.date=2020 Journal of Geophysical Research (JGR): Atmospheres 125 15 17 https://doi.org/10.1029/2019JD032092 URN:NBN:no-85752 Fulltext https://www.duo.uio.no/bitstream/handle/10852/82959/2/2020_10.1029.2019JD032092_oa.pdf |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 International https://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1029/2019JD032092 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
125 |
container_issue |
15 |
_version_ |
1765996920859262976 |