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CO2-induced terrestrial climate feedback mechanism: From carbon sink to aerosol source and back

Kulmala, Markku; Nieminen, Tuomo; Nikandrova, Anna; Lehtipalo, Katrianne; Manninen, Hanna E.; Kajos, Maija K.; Kolari, Pasi; Lauri, Antti; Petaja, Tuukka and Krejci, Radovan, et al. (2014) In Boreal Environment Research: An International Interdisciplinary Journal 19. p.122-131
Abstract
Feedbacks mechanisms are essential components of our climate system, as they either increase or decrease changes in climate-related quantities in the presence of external forcings. In this work, we provide the first quantitative estimate regarding the terrestrial climate feedback loop connecting the increasing atmospheric carbon dioxide concentration, changes in gross primary production (GPP) associated with the carbon uptake, organic aerosol formation in the atmosphere, and transfer of both diffuse and global radiation. Our approach was to combine process-level understanding with comprehensive, long-term field measurement data set collected from a boreal forest site in southern Finland. Our best estimate of the gain in GPP resulting from... (More)
Feedbacks mechanisms are essential components of our climate system, as they either increase or decrease changes in climate-related quantities in the presence of external forcings. In this work, we provide the first quantitative estimate regarding the terrestrial climate feedback loop connecting the increasing atmospheric carbon dioxide concentration, changes in gross primary production (GPP) associated with the carbon uptake, organic aerosol formation in the atmosphere, and transfer of both diffuse and global radiation. Our approach was to combine process-level understanding with comprehensive, long-term field measurement data set collected from a boreal forest site in southern Finland. Our best estimate of the gain in GPP resulting from the feedback is 1.3 (range 1.02-1.5), which is larger than the gains of the few atmospheric chemistry-climate feedbacks estimated using large-scale models. Our analysis demonstrates the power of using comprehensive field measurements in investigating the complicated couplings between the biosphere and atmosphere on one hand, and the need for complementary approaches relying on the combination of field data, satellite observations model simulations on the other hand. (Less)
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publication status
published
subject
in
Boreal Environment Research: An International Interdisciplinary Journal
volume
19
pages
122 - 131
publisher
Finnish Zoological and Botanical Publishing Board
external identifiers
  • wos:000342654100009
  • scopus:84906975491
ISSN
1239-6095
project
MERGE
language
English
LU publication?
yes
id
8c0b1ee5-d12e-4040-a518-62b1beae8ddd (old id 4803513)
date added to LUP
2014-11-28 14:42:16
date last changed
2017-08-27 04:51:24
@article{8c0b1ee5-d12e-4040-a518-62b1beae8ddd,
  abstract     = {Feedbacks mechanisms are essential components of our climate system, as they either increase or decrease changes in climate-related quantities in the presence of external forcings. In this work, we provide the first quantitative estimate regarding the terrestrial climate feedback loop connecting the increasing atmospheric carbon dioxide concentration, changes in gross primary production (GPP) associated with the carbon uptake, organic aerosol formation in the atmosphere, and transfer of both diffuse and global radiation. Our approach was to combine process-level understanding with comprehensive, long-term field measurement data set collected from a boreal forest site in southern Finland. Our best estimate of the gain in GPP resulting from the feedback is 1.3 (range 1.02-1.5), which is larger than the gains of the few atmospheric chemistry-climate feedbacks estimated using large-scale models. Our analysis demonstrates the power of using comprehensive field measurements in investigating the complicated couplings between the biosphere and atmosphere on one hand, and the need for complementary approaches relying on the combination of field data, satellite observations model simulations on the other hand.},
  author       = {Kulmala, Markku and Nieminen, Tuomo and Nikandrova, Anna and Lehtipalo, Katrianne and Manninen, Hanna E. and Kajos, Maija K. and Kolari, Pasi and Lauri, Antti and Petaja, Tuukka and Krejci, Radovan and Hansson, Hans-Christen and Swietlicki, Erik and Lindroth, Anders and Christensen, Torben and Arneth, Almut and Hari, Pertti and Back, Jaana and Vesala, Timo and Kerminen, Veli-Matti},
  issn         = {1239-6095},
  language     = {eng},
  pages        = {122--131},
  publisher    = {Finnish Zoological and Botanical Publishing Board},
  series       = {Boreal Environment Research: An International Interdisciplinary Journal},
  title        = {CO2-induced terrestrial climate feedback mechanism: From carbon sink to aerosol source and back},
  volume       = {19},
  year         = {2014},
}