Challenges in modelling isoprene and monoterpene emission dynamics of Arctic plants:a case study from a subarctic tundra heath
The Arctic is warming at twice the global average speed, and the warming-induced increases in biogenic volatile organic compounds (BVOCs) emissions from Arctic plants are expected to be drastic. The current global models' estimations of minimal BVOC emissions from the Arctic are based on very f...
Published in: | Biogeosciences |
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2016
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Online Access: | https://curis.ku.dk/portal/da/publications/challenges-in-modelling-isoprene-and-monoterpene-emission-dynamics-of-arctic-plants(974a614e-c5fc-4f9d-b4c3-38ef4407d07b).html https://doi.org/10.5194/bg-13-6651-2016 https://curis.ku.dk/ws/files/171655180/Tang_2016_Challenges_ind_modelling.pdf |
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ftcopenhagenunip:oai:pure.atira.dk:publications/974a614e-c5fc-4f9d-b4c3-38ef4407d07b 2024-05-19T07:33:09+00:00 Challenges in modelling isoprene and monoterpene emission dynamics of Arctic plants:a case study from a subarctic tundra heath Tang, Jing Schurgers, Guy Valolahti, Hanna Maritta Faubert, Patrick Tiiva, Päivi Michelsen, Anders Rinnan, Riikka 2016 application/pdf https://curis.ku.dk/portal/da/publications/challenges-in-modelling-isoprene-and-monoterpene-emission-dynamics-of-arctic-plants(974a614e-c5fc-4f9d-b4c3-38ef4407d07b).html https://doi.org/10.5194/bg-13-6651-2016 https://curis.ku.dk/ws/files/171655180/Tang_2016_Challenges_ind_modelling.pdf eng eng info:eu-repo/semantics/openAccess Tang , J , Schurgers , G , Valolahti , H M , Faubert , P , Tiiva , P , Michelsen , A & Rinnan , R 2016 , ' Challenges in modelling isoprene and monoterpene emission dynamics of Arctic plants : a case study from a subarctic tundra heath ' , Biogeosciences , vol. 13 , no. 24 , pp. 6651-6667 . https://doi.org/10.5194/bg-13-6651-2016 article 2016 ftcopenhagenunip https://doi.org/10.5194/bg-13-6651-2016 2024-04-25T00:45:03Z The Arctic is warming at twice the global average speed, and the warming-induced increases in biogenic volatile organic compounds (BVOCs) emissions from Arctic plants are expected to be drastic. The current global models' estimations of minimal BVOC emissions from the Arctic are based on very few observations and have been challenged increasingly by field data. This study applied a dynamic ecosystem model, LPJ-GUESS, as a platform to investigate short-term and long-term BVOC emission responses to Arctic climate warming. Field observations in a subarctic tundra heath with long-term (13-year) warming treatments were extensively used for parameterizing and evaluating BVOC-related processes (photosynthesis, emission responses to temperature and vegetation composition). We propose an adjusted temperature (T) response curve for Arctic plants with much stronger T sensitivity than the commonly used algorithms for large-scale modelling. The simulated emission responses to 2 °C warming between the adjusted and original T response curves were evaluated against the observed warming responses (WRs) at short-term scales. Moreover, the model responses to warming by 4 and 8 °C were also investigated as a sensitivity test. The model showed reasonable agreement to the observed vegetation CO2 fluxes in the main growing season as well as day-to-day variability of isoprene and monoterpene emissions. The observed relatively high WRs were better captured by the adjusted T response curve than by the common one. During 1999-2012, the modelled annual mean isoprene and monoterpene emissions were 20 and 8 mg C mg -2 yrg -1 , with an increase by 55 and 57 % for 2 °C summertime warming, respectively. Warming by 4 and 8 °C for the same period further elevated isoprene emission for all years, but the impacts on monoterpene emissions levelled off during the last few years. At hour-day scale, the WRs seem to be strongly impacted by canopy air T, while at the day-year scale, the WRs are a combined effect of plant functional type (PFT) dynamics ... Article in Journal/Newspaper Arctic Arctic Subarctic Tundra University of Copenhagen: Research Biogeosciences 13 24 6651 6667 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
The Arctic is warming at twice the global average speed, and the warming-induced increases in biogenic volatile organic compounds (BVOCs) emissions from Arctic plants are expected to be drastic. The current global models' estimations of minimal BVOC emissions from the Arctic are based on very few observations and have been challenged increasingly by field data. This study applied a dynamic ecosystem model, LPJ-GUESS, as a platform to investigate short-term and long-term BVOC emission responses to Arctic climate warming. Field observations in a subarctic tundra heath with long-term (13-year) warming treatments were extensively used for parameterizing and evaluating BVOC-related processes (photosynthesis, emission responses to temperature and vegetation composition). We propose an adjusted temperature (T) response curve for Arctic plants with much stronger T sensitivity than the commonly used algorithms for large-scale modelling. The simulated emission responses to 2 °C warming between the adjusted and original T response curves were evaluated against the observed warming responses (WRs) at short-term scales. Moreover, the model responses to warming by 4 and 8 °C were also investigated as a sensitivity test. The model showed reasonable agreement to the observed vegetation CO2 fluxes in the main growing season as well as day-to-day variability of isoprene and monoterpene emissions. The observed relatively high WRs were better captured by the adjusted T response curve than by the common one. During 1999-2012, the modelled annual mean isoprene and monoterpene emissions were 20 and 8 mg C mg -2 yrg -1 , with an increase by 55 and 57 % for 2 °C summertime warming, respectively. Warming by 4 and 8 °C for the same period further elevated isoprene emission for all years, but the impacts on monoterpene emissions levelled off during the last few years. At hour-day scale, the WRs seem to be strongly impacted by canopy air T, while at the day-year scale, the WRs are a combined effect of plant functional type (PFT) dynamics ... |
format |
Article in Journal/Newspaper |
author |
Tang, Jing Schurgers, Guy Valolahti, Hanna Maritta Faubert, Patrick Tiiva, Päivi Michelsen, Anders Rinnan, Riikka |
spellingShingle |
Tang, Jing Schurgers, Guy Valolahti, Hanna Maritta Faubert, Patrick Tiiva, Päivi Michelsen, Anders Rinnan, Riikka Challenges in modelling isoprene and monoterpene emission dynamics of Arctic plants:a case study from a subarctic tundra heath |
author_facet |
Tang, Jing Schurgers, Guy Valolahti, Hanna Maritta Faubert, Patrick Tiiva, Päivi Michelsen, Anders Rinnan, Riikka |
author_sort |
Tang, Jing |
title |
Challenges in modelling isoprene and monoterpene emission dynamics of Arctic plants:a case study from a subarctic tundra heath |
title_short |
Challenges in modelling isoprene and monoterpene emission dynamics of Arctic plants:a case study from a subarctic tundra heath |
title_full |
Challenges in modelling isoprene and monoterpene emission dynamics of Arctic plants:a case study from a subarctic tundra heath |
title_fullStr |
Challenges in modelling isoprene and monoterpene emission dynamics of Arctic plants:a case study from a subarctic tundra heath |
title_full_unstemmed |
Challenges in modelling isoprene and monoterpene emission dynamics of Arctic plants:a case study from a subarctic tundra heath |
title_sort |
challenges in modelling isoprene and monoterpene emission dynamics of arctic plants:a case study from a subarctic tundra heath |
publishDate |
2016 |
url |
https://curis.ku.dk/portal/da/publications/challenges-in-modelling-isoprene-and-monoterpene-emission-dynamics-of-arctic-plants(974a614e-c5fc-4f9d-b4c3-38ef4407d07b).html https://doi.org/10.5194/bg-13-6651-2016 https://curis.ku.dk/ws/files/171655180/Tang_2016_Challenges_ind_modelling.pdf |
genre |
Arctic Arctic Subarctic Tundra |
genre_facet |
Arctic Arctic Subarctic Tundra |
op_source |
Tang , J , Schurgers , G , Valolahti , H M , Faubert , P , Tiiva , P , Michelsen , A & Rinnan , R 2016 , ' Challenges in modelling isoprene and monoterpene emission dynamics of Arctic plants : a case study from a subarctic tundra heath ' , Biogeosciences , vol. 13 , no. 24 , pp. 6651-6667 . https://doi.org/10.5194/bg-13-6651-2016 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-13-6651-2016 |
container_title |
Biogeosciences |
container_volume |
13 |
container_issue |
24 |
container_start_page |
6651 |
op_container_end_page |
6667 |
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1799471281412767744 |