Climate response to aerosol geoengineering: a multi-method comparison
Considering the ambitious climate targets of the Paris Agreement to limit global warming to 2°C, with aspirations of even 1.5°C, questions arise on how to achieve this. Climate geoengineering has been proposed as a potential tool to minimize global harm from anthropogenic climate change. Here, an Ea...
Published in: | Journal of Climate |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Meteorological Society
2018
|
Subjects: | |
Online Access: | http://hdl.handle.net/10852/71857 http://urn.nb.no/URN:NBN:no-74975 https://doi.org/10.1175/JCLI-D-17-0620.1 |
id |
ftoslouniv:oai:www.duo.uio.no:10852/71857 |
---|---|
record_format |
openpolar |
spelling |
ftoslouniv:oai:www.duo.uio.no:10852/71857 2023-05-15T18:18:39+02:00 Climate response to aerosol geoengineering: a multi-method comparison Muri, Helene Tjiputra, Jerry Otterå, Odd Helge Adakudlu, Muralidhar Lauvset, Siv Kari Grini, Alf Schulz, Michael Niemeier, Ulrike Kristjansson, Jon Egill 2018-04-30T11:29:12Z http://hdl.handle.net/10852/71857 http://urn.nb.no/URN:NBN:no-74975 https://doi.org/10.1175/JCLI-D-17-0620.1 EN eng American Meteorological Society NOTUR/NORSTORE/NS9033K NOTUR/NORSTORE/nn9448k NFR/229760 NOTUR/NORSTORE/nn9182k http://urn.nb.no/URN:NBN:no-74975 Muri, Helene Tjiputra, Jerry Otterå, Odd Helge Adakudlu, Muralidhar Lauvset, Siv Kari Grini, Alf Schulz, Michael Niemeier, Ulrike Kristjansson, Jon Egill . Climate response to aerosol geoengineering: a multi-method comparison. Journal of Climate. 2018, 31(16), 6319-6340 http://hdl.handle.net/10852/71857 1582476 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Climate&rft.volume=31&rft.spage=6319&rft.date=2018 Journal of Climate 31 16 6319 6340 https://doi.org/10.1175/JCLI-D-17-0620.1 URN:NBN:no-74975 Fulltext https://www.duo.uio.no/bitstream/handle/10852/71857/1/jcli-d-17-0620.1.pdf 0894-8755 VDP::Meteorologi: 453 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2018 ftoslouniv https://doi.org/10.1175/JCLI-D-17-0620.1 2020-06-21T08:52:45Z Considering the ambitious climate targets of the Paris Agreement to limit global warming to 2°C, with aspirations of even 1.5°C, questions arise on how to achieve this. Climate geoengineering has been proposed as a potential tool to minimize global harm from anthropogenic climate change. Here, an Earth system model is used to evaluate the climate response when transferring from a high CO2 forcing scenario, RCP8.5, to a middle-of-the-road forcing scenario, like RCP4.5, using aerosol geoengineering. Three different techniques are considered: stratospheric aerosol injections (SAI), marine sky brightening (MSB), and cirrus cloud thinning (CCT). The climate states appearing in the climate geoengineering cases are found to be closer to RCP4.5 than RCP8.5 and many anthropogenic global warming symptoms are alleviated. All three techniques result in comparable global mean temperature evolutions. However, there are some notable differences in other climate variables due to the nature of the forcings applied. CCT acts mainly on the longwave part of the radiation budget, as opposed to MSB and SAI acting in the shortwave. This yields a difference in the response, particularly in the hydrological cycle. The responses in sea ice, sea level, ocean heat, and circulation, as well as the carbon cycle, are furthermore compared. Sudden termination of the aerosol injection geoengineering shows that the climate very rapidly (within two decades) reverts to the path of RCP8.5, questioning the sustainable nature of such climate geoengineering, and simultaneous mitigation during any such form of climate geoengineering would be needed to limit termination risks. Article in Journal/Newspaper Sea ice Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Journal of Climate 31 16 6319 6340 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
topic |
VDP::Meteorologi: 453 |
spellingShingle |
VDP::Meteorologi: 453 Muri, Helene Tjiputra, Jerry Otterå, Odd Helge Adakudlu, Muralidhar Lauvset, Siv Kari Grini, Alf Schulz, Michael Niemeier, Ulrike Kristjansson, Jon Egill Climate response to aerosol geoengineering: a multi-method comparison |
topic_facet |
VDP::Meteorologi: 453 |
description |
Considering the ambitious climate targets of the Paris Agreement to limit global warming to 2°C, with aspirations of even 1.5°C, questions arise on how to achieve this. Climate geoengineering has been proposed as a potential tool to minimize global harm from anthropogenic climate change. Here, an Earth system model is used to evaluate the climate response when transferring from a high CO2 forcing scenario, RCP8.5, to a middle-of-the-road forcing scenario, like RCP4.5, using aerosol geoengineering. Three different techniques are considered: stratospheric aerosol injections (SAI), marine sky brightening (MSB), and cirrus cloud thinning (CCT). The climate states appearing in the climate geoengineering cases are found to be closer to RCP4.5 than RCP8.5 and many anthropogenic global warming symptoms are alleviated. All three techniques result in comparable global mean temperature evolutions. However, there are some notable differences in other climate variables due to the nature of the forcings applied. CCT acts mainly on the longwave part of the radiation budget, as opposed to MSB and SAI acting in the shortwave. This yields a difference in the response, particularly in the hydrological cycle. The responses in sea ice, sea level, ocean heat, and circulation, as well as the carbon cycle, are furthermore compared. Sudden termination of the aerosol injection geoengineering shows that the climate very rapidly (within two decades) reverts to the path of RCP8.5, questioning the sustainable nature of such climate geoengineering, and simultaneous mitigation during any such form of climate geoengineering would be needed to limit termination risks. |
format |
Article in Journal/Newspaper |
author |
Muri, Helene Tjiputra, Jerry Otterå, Odd Helge Adakudlu, Muralidhar Lauvset, Siv Kari Grini, Alf Schulz, Michael Niemeier, Ulrike Kristjansson, Jon Egill |
author_facet |
Muri, Helene Tjiputra, Jerry Otterå, Odd Helge Adakudlu, Muralidhar Lauvset, Siv Kari Grini, Alf Schulz, Michael Niemeier, Ulrike Kristjansson, Jon Egill |
author_sort |
Muri, Helene |
title |
Climate response to aerosol geoengineering: a multi-method comparison |
title_short |
Climate response to aerosol geoengineering: a multi-method comparison |
title_full |
Climate response to aerosol geoengineering: a multi-method comparison |
title_fullStr |
Climate response to aerosol geoengineering: a multi-method comparison |
title_full_unstemmed |
Climate response to aerosol geoengineering: a multi-method comparison |
title_sort |
climate response to aerosol geoengineering: a multi-method comparison |
publisher |
American Meteorological Society |
publishDate |
2018 |
url |
http://hdl.handle.net/10852/71857 http://urn.nb.no/URN:NBN:no-74975 https://doi.org/10.1175/JCLI-D-17-0620.1 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
0894-8755 |
op_relation |
NOTUR/NORSTORE/NS9033K NOTUR/NORSTORE/nn9448k NFR/229760 NOTUR/NORSTORE/nn9182k http://urn.nb.no/URN:NBN:no-74975 Muri, Helene Tjiputra, Jerry Otterå, Odd Helge Adakudlu, Muralidhar Lauvset, Siv Kari Grini, Alf Schulz, Michael Niemeier, Ulrike Kristjansson, Jon Egill . Climate response to aerosol geoengineering: a multi-method comparison. Journal of Climate. 2018, 31(16), 6319-6340 http://hdl.handle.net/10852/71857 1582476 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Climate&rft.volume=31&rft.spage=6319&rft.date=2018 Journal of Climate 31 16 6319 6340 https://doi.org/10.1175/JCLI-D-17-0620.1 URN:NBN:no-74975 Fulltext https://www.duo.uio.no/bitstream/handle/10852/71857/1/jcli-d-17-0620.1.pdf |
op_doi |
https://doi.org/10.1175/JCLI-D-17-0620.1 |
container_title |
Journal of Climate |
container_volume |
31 |
container_issue |
16 |
container_start_page |
6319 |
op_container_end_page |
6340 |
_version_ |
1766195295196020736 |