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Biogeochemical control of the coupled CO2-O2 system of the Baltic Sea: A review of the results of Baltic-C

Omstedt, A; Humborg, C; Pempkowiak, J; Pertillä, M; Rutgersson, A; Schneider, B and Smith, Benjamin LU (2014) In Ambio 43(1). p.49-59
Abstract
Past, present, and possible future changes in the Baltic Sea acid-base and oxygen balances were studied using different numerical experiments and a catchment-sea model system in several scenarios including business as usual, medium scenario, and the Baltic Sea Action Plan. New CO2 partial pressure data provided guidance for improving the marine biogeochemical model. Continuous CO2 and nutrient measurements with high temporal resolution helped disentangle the biogeochemical processes. These data and modeling indicate that traditional understandings of the nutrient availability-organic matter production relationship do not necessarily apply to the Baltic Sea. Modeling indicates that increased nutrient loads will not inhibit future Baltic Sea... (More)
Past, present, and possible future changes in the Baltic Sea acid-base and oxygen balances were studied using different numerical experiments and a catchment-sea model system in several scenarios including business as usual, medium scenario, and the Baltic Sea Action Plan. New CO2 partial pressure data provided guidance for improving the marine biogeochemical model. Continuous CO2 and nutrient measurements with high temporal resolution helped disentangle the biogeochemical processes. These data and modeling indicate that traditional understandings of the nutrient availability-organic matter production relationship do not necessarily apply to the Baltic Sea. Modeling indicates that increased nutrient loads will not inhibit future Baltic Sea acidification; instead, increased mineralization and biological production will amplify the seasonal surface pH cycle. The direction and magnitude of future pH changes are mainly controlled by atmospheric CO2 concentration. Apart from decreasing pH, we project a decreasing calcium carbonate saturation state and increasing hypoxic area. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Eutrophication, Ocean acidification, Climate change, Baltic Sea, Kattegat
in
Ambio
volume
43
issue
1
pages
49 - 59
publisher
Springer
external identifiers
  • wos:000329831800005
  • scopus:84894274985
ISSN
0044-7447
DOI
10.1007/s13280-013-0485-4
project
MERGE
BECC
language
English
LU publication?
yes
id
873d73b3-1d63-4393-b930-0abcdd8a0ba7 (old id 4247659)
date added to LUP
2014-02-25 13:34:36
date last changed
2017-08-20 03:53:29
@article{873d73b3-1d63-4393-b930-0abcdd8a0ba7,
  abstract     = {Past, present, and possible future changes in the Baltic Sea acid-base and oxygen balances were studied using different numerical experiments and a catchment-sea model system in several scenarios including business as usual, medium scenario, and the Baltic Sea Action Plan. New CO2 partial pressure data provided guidance for improving the marine biogeochemical model. Continuous CO2 and nutrient measurements with high temporal resolution helped disentangle the biogeochemical processes. These data and modeling indicate that traditional understandings of the nutrient availability-organic matter production relationship do not necessarily apply to the Baltic Sea. Modeling indicates that increased nutrient loads will not inhibit future Baltic Sea acidification; instead, increased mineralization and biological production will amplify the seasonal surface pH cycle. The direction and magnitude of future pH changes are mainly controlled by atmospheric CO2 concentration. Apart from decreasing pH, we project a decreasing calcium carbonate saturation state and increasing hypoxic area.},
  author       = {Omstedt, A and Humborg, C and Pempkowiak, J and Pertillä, M and Rutgersson, A and Schneider, B and Smith, Benjamin},
  issn         = {0044-7447},
  keyword      = {Eutrophication,Ocean acidification,Climate change,Baltic Sea,Kattegat},
  language     = {eng},
  number       = {1},
  pages        = {49--59},
  publisher    = {Springer},
  series       = {Ambio},
  title        = {Biogeochemical control of the coupled CO2-O2 system of the Baltic Sea: A review of the results of Baltic-C},
  url          = {http://dx.doi.org/10.1007/s13280-013-0485-4},
  volume       = {43},
  year         = {2014},
}