What climate sensitivity index is most useful for projections?
Transient climate response (TCR), transient response at 140 years (T140) and equilibrium climate sensitivity (ECS) indices are intended as benchmarks for comparing the magnitude of climate response projected by climate models. It is generally assumed that TCR or T140 would explain more variability b...
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ftunivreading:oai:centaur.reading.ac.uk:75238 2024-06-23T07:56:55+00:00 What climate sensitivity index is most useful for projections? Grose, Michael R. Gregory, Jonathan Colman, Robert Andrews, Timothy 2018-02-16 text https://centaur.reading.ac.uk/75238/ https://centaur.reading.ac.uk/75238/8/Grose_et_al-2018-Geophysical_Research_Letters.pdf https://centaur.reading.ac.uk/75238/1/grose18index_authors.pdf en eng American Geophysical Union https://centaur.reading.ac.uk/75238/8/Grose_et_al-2018-Geophysical_Research_Letters.pdf https://centaur.reading.ac.uk/75238/1/grose18index_authors.pdf Grose, M. R., Gregory, J. <https://centaur.reading.ac.uk/view/creators/90000874.html> orcid:0000-0003-1296-8644 , Colman, R. and Andrews, T. (2018) What climate sensitivity index is most useful for projections? Geophysical Research Letters, 45 (3). pp. 1559-1566. ISSN 0094-8276 doi: https://doi.org/10.1002/2017GL075742 <https://doi.org/10.1002/2017GL075742> Article PeerReviewed 2018 ftunivreading 2024-06-11T15:07:33Z Transient climate response (TCR), transient response at 140 years (T140) and equilibrium climate sensitivity (ECS) indices are intended as benchmarks for comparing the magnitude of climate response projected by climate models. It is generally assumed that TCR or T140 would explain more variability between models than ECS for temperature change over the 21st Century, since this timescale is the realm of transient climate change. Here we find that TCR explains more variability across CMIP5 than ECS for global temperature change since pre-industrial, for 50- or 100-year global trends up to the present, and for projected change under representative concentration pathways in regions of delayed warming such as the Southern Ocean. However, unexpectedly we find that ECS correlates higher than TCR for projected change from the present in the global mean and in most regions. This higher correlation doesn’t relate to aerosol forcing, and the physical cause requires further investigation. Article in Journal/Newspaper Southern Ocean CentAUR: Central Archive at the University of Reading Southern Ocean Geophysical Research Letters 45 3 1559 1566 |
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CentAUR: Central Archive at the University of Reading |
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ftunivreading |
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English |
description |
Transient climate response (TCR), transient response at 140 years (T140) and equilibrium climate sensitivity (ECS) indices are intended as benchmarks for comparing the magnitude of climate response projected by climate models. It is generally assumed that TCR or T140 would explain more variability between models than ECS for temperature change over the 21st Century, since this timescale is the realm of transient climate change. Here we find that TCR explains more variability across CMIP5 than ECS for global temperature change since pre-industrial, for 50- or 100-year global trends up to the present, and for projected change under representative concentration pathways in regions of delayed warming such as the Southern Ocean. However, unexpectedly we find that ECS correlates higher than TCR for projected change from the present in the global mean and in most regions. This higher correlation doesn’t relate to aerosol forcing, and the physical cause requires further investigation. |
format |
Article in Journal/Newspaper |
author |
Grose, Michael R. Gregory, Jonathan Colman, Robert Andrews, Timothy |
spellingShingle |
Grose, Michael R. Gregory, Jonathan Colman, Robert Andrews, Timothy What climate sensitivity index is most useful for projections? |
author_facet |
Grose, Michael R. Gregory, Jonathan Colman, Robert Andrews, Timothy |
author_sort |
Grose, Michael R. |
title |
What climate sensitivity index is most useful for projections? |
title_short |
What climate sensitivity index is most useful for projections? |
title_full |
What climate sensitivity index is most useful for projections? |
title_fullStr |
What climate sensitivity index is most useful for projections? |
title_full_unstemmed |
What climate sensitivity index is most useful for projections? |
title_sort |
what climate sensitivity index is most useful for projections? |
publisher |
American Geophysical Union |
publishDate |
2018 |
url |
https://centaur.reading.ac.uk/75238/ https://centaur.reading.ac.uk/75238/8/Grose_et_al-2018-Geophysical_Research_Letters.pdf https://centaur.reading.ac.uk/75238/1/grose18index_authors.pdf |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
https://centaur.reading.ac.uk/75238/8/Grose_et_al-2018-Geophysical_Research_Letters.pdf https://centaur.reading.ac.uk/75238/1/grose18index_authors.pdf Grose, M. R., Gregory, J. <https://centaur.reading.ac.uk/view/creators/90000874.html> orcid:0000-0003-1296-8644 , Colman, R. and Andrews, T. (2018) What climate sensitivity index is most useful for projections? Geophysical Research Letters, 45 (3). pp. 1559-1566. ISSN 0094-8276 doi: https://doi.org/10.1002/2017GL075742 <https://doi.org/10.1002/2017GL075742> |
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Geophysical Research Letters |
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45 |
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3 |
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1559 |
op_container_end_page |
1566 |
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1802650318251491328 |