The simulated response of dimethylsulphide production in the Arctic Ocean to global warming
Sulfate aerosols (of both biogenic and anthropogenic origin) play a key role in the Earth's radiation balance both directly through scattering and absorption of solar and terrestrial radiation, and indirectly by modifying cloud microphysical properties. However, the uncertainties associated wit...
Published in: | Tellus B |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Blackwell Munksgaard
2005
|
Subjects: | |
Online Access: | http://hdl.handle.net/10072/4349 https://doi.org/10.1111/j.1600-0889.2005.00163.x |
id |
ftgriffithuniv:oai:research-repository.griffith.edu.au:10072/4349 |
---|---|
record_format |
openpolar |
spelling |
ftgriffithuniv:oai:research-repository.griffith.edu.au:10072/4349 2024-06-23T07:49:38+00:00 The simulated response of dimethylsulphide production in the Arctic Ocean to global warming Gabric, AJ Qu, B Matrai, P Hirst, AC 2005 http://hdl.handle.net/10072/4349 https://doi.org/10.1111/j.1600-0889.2005.00163.x English eng eng Blackwell Munksgaard Tellus. Series B, Chemical and physical meteorology http://hdl.handle.net/10072/4349 1600-0889 doi:10.1111/j.1600-0889.2005.00163.x © 2005 Blackwell Publishing. The definitive version is available at [onlinelibrary.wiley.com.] open access Atmospheric sciences Journal article 2005 ftgriffithuniv https://doi.org/10.1111/j.1600-0889.2005.00163.x 2024-06-12T00:15:02Z Sulfate aerosols (of both biogenic and anthropogenic origin) play a key role in the Earth's radiation balance both directly through scattering and absorption of solar and terrestrial radiation, and indirectly by modifying cloud microphysical properties. However, the uncertainties associated with radiative forcing of climate due to aerosols substantially exceed those associated with the greenhouse gases. The major source of sulfate aerosols in the remote marine atmosphere is the biogenic compound dimethylsulfide (DMS), which is ubiquitous in the world's oceans and is synthesized by plankton. Climate models point to significant future changes in sea-ice cover in the Arctic Ocean due to warming. This will have consequences for primary production and the sea-to-air flux of a number of biogenic compounds, including DMS. In this paper we discuss the impact of warming on the future production of DMS in the Arctic Ocean. A DMS production model has been calibrated to current climate conditions with satellite ocean colour data (SeaWiFS) using a genetic algorithm, an efficient non-derivative based optimization technique. We use the CSIRO Mk 2 climate model to force the DMS model under enhanced greenhouse climate conditions. We discuss the simulated change in DMS flux and its consequences for future aerosol production and the radiative budget of the Arctic. Significant decreases in sea-ice cover (by 18.5% annually and 61% in summer-autumn), increases in mean annual sea surface temperature of 1ì and a decrease of mixed layer depth by 13% annually are predicted to result in annual DMS flux increases of over 80% by the time of equivalent CO2 tripling (2080). Estimates of the impact of this increase in DMS emissions suggest significant changes to summer aerosol concentrations and the radiative balance in the Arctic region. Griffith Sciences, Griffith School of Environment Full Text Article in Journal/Newspaper Arctic Arctic Ocean Global warming Sea ice Griffith University: Griffith Research Online Arctic Arctic Ocean Griffith ENVELOPE(-155.500,-155.500,-85.883,-85.883) Tellus B 57 5 391 403 |
institution |
Open Polar |
collection |
Griffith University: Griffith Research Online |
op_collection_id |
ftgriffithuniv |
language |
English |
topic |
Atmospheric sciences |
spellingShingle |
Atmospheric sciences Gabric, AJ Qu, B Matrai, P Hirst, AC The simulated response of dimethylsulphide production in the Arctic Ocean to global warming |
topic_facet |
Atmospheric sciences |
description |
Sulfate aerosols (of both biogenic and anthropogenic origin) play a key role in the Earth's radiation balance both directly through scattering and absorption of solar and terrestrial radiation, and indirectly by modifying cloud microphysical properties. However, the uncertainties associated with radiative forcing of climate due to aerosols substantially exceed those associated with the greenhouse gases. The major source of sulfate aerosols in the remote marine atmosphere is the biogenic compound dimethylsulfide (DMS), which is ubiquitous in the world's oceans and is synthesized by plankton. Climate models point to significant future changes in sea-ice cover in the Arctic Ocean due to warming. This will have consequences for primary production and the sea-to-air flux of a number of biogenic compounds, including DMS. In this paper we discuss the impact of warming on the future production of DMS in the Arctic Ocean. A DMS production model has been calibrated to current climate conditions with satellite ocean colour data (SeaWiFS) using a genetic algorithm, an efficient non-derivative based optimization technique. We use the CSIRO Mk 2 climate model to force the DMS model under enhanced greenhouse climate conditions. We discuss the simulated change in DMS flux and its consequences for future aerosol production and the radiative budget of the Arctic. Significant decreases in sea-ice cover (by 18.5% annually and 61% in summer-autumn), increases in mean annual sea surface temperature of 1ì and a decrease of mixed layer depth by 13% annually are predicted to result in annual DMS flux increases of over 80% by the time of equivalent CO2 tripling (2080). Estimates of the impact of this increase in DMS emissions suggest significant changes to summer aerosol concentrations and the radiative balance in the Arctic region. Griffith Sciences, Griffith School of Environment Full Text |
format |
Article in Journal/Newspaper |
author |
Gabric, AJ Qu, B Matrai, P Hirst, AC |
author_facet |
Gabric, AJ Qu, B Matrai, P Hirst, AC |
author_sort |
Gabric, AJ |
title |
The simulated response of dimethylsulphide production in the Arctic Ocean to global warming |
title_short |
The simulated response of dimethylsulphide production in the Arctic Ocean to global warming |
title_full |
The simulated response of dimethylsulphide production in the Arctic Ocean to global warming |
title_fullStr |
The simulated response of dimethylsulphide production in the Arctic Ocean to global warming |
title_full_unstemmed |
The simulated response of dimethylsulphide production in the Arctic Ocean to global warming |
title_sort |
simulated response of dimethylsulphide production in the arctic ocean to global warming |
publisher |
Blackwell Munksgaard |
publishDate |
2005 |
url |
http://hdl.handle.net/10072/4349 https://doi.org/10.1111/j.1600-0889.2005.00163.x |
long_lat |
ENVELOPE(-155.500,-155.500,-85.883,-85.883) |
geographic |
Arctic Arctic Ocean Griffith |
geographic_facet |
Arctic Arctic Ocean Griffith |
genre |
Arctic Arctic Ocean Global warming Sea ice |
genre_facet |
Arctic Arctic Ocean Global warming Sea ice |
op_relation |
Tellus. Series B, Chemical and physical meteorology http://hdl.handle.net/10072/4349 1600-0889 doi:10.1111/j.1600-0889.2005.00163.x |
op_rights |
© 2005 Blackwell Publishing. The definitive version is available at [onlinelibrary.wiley.com.] open access |
op_doi |
https://doi.org/10.1111/j.1600-0889.2005.00163.x |
container_title |
Tellus B |
container_volume |
57 |
container_issue |
5 |
container_start_page |
391 |
op_container_end_page |
403 |
_version_ |
1802640157955850240 |