Cloud response to summer temperatures in Fennoscandia over the last thousand years
Cloud cover is one of the most important factors controlling the radiation balance of the Earth. The response of cloud cover to increasing global temperatures represents the largest uncertainty in model estimates of future climate because the cloud response to temperature is not well-constrained. He...
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fthzgzmk:oai:publications.hereon.de:28737 2023-06-11T04:11:37+02:00 Cloud response to summer temperatures in Fennoscandia over the last thousand years Gagen, M. Zorita, E. McCarroll, D. Young, G.H.F. Grudd, H. Jalkanen, R. Loader, N.J. Robertson, I. Kirchhefer, A. 2011 https://publications.hereon.de/id/28737 https://publications.hzg.de/id/28737 http://www.hzg.de/imperia/md/content/gkss/zentrale_einrichtungen/bibliothek/journals/2011/Gagen-georeslett.pdf en eng AGU http://dx.doi.org/10.1029/2010GL046216 urn:issn:0094-8276 https://publications.hereon.de/id/28737 https://publications.hzg.de/id/28737 http://www.hzg.de/imperia/md/content/gkss/zentrale_einrichtungen/bibliothek/journals/2011/Gagen-georeslett.pdf info:eu-repo/semantics/openAccess open_access oa_gruen issn:0094-8276 Gagen, M.; Zorita, E.; McCarroll, D.; Young, G.H.F.; Grudd, H.; Jalkanen, R.; Loader, N.J.; Robertson, I.; Kirchhefer, A.: Cloud response to summer temperatures in Fennoscandia over the last thousand years. In: Geophysical Research Letters. Vol. 38 (2011) L05701. (DOI:10.1029/2010GL046216) info:eu-repo/classification/ddc/551 info:eu-repo/semantics/article Zeitschrift Artikel 2011 fthzgzmk https://doi.org/10.1029/2010GL046216 2023-05-28T23:23:15Z Cloud cover is one of the most important factors controlling the radiation balance of the Earth. The response of cloud cover to increasing global temperatures represents the largest uncertainty in model estimates of future climate because the cloud response to temperature is not well-constrained. Here we present the first regional reconstruction of summer sunshine over the past millennium, based on the stable carbon isotope ratios of pine treerings from Fennoscandia. Comparison with the regional temperature evolution reveals the Little Ice Age (LIA) to have been sunny, with cloudy conditions in the warmest periods of the Medieval at this site. A negative shortwave cloud feedback is indicated at high latitude. A millennial climate simulation suggests that regionally low temperatures during the LIA were mostly maintained by a weaker greenhouse effect due to lower humidity. Simulations of future climate that display a negative shortwave cloud feedback for high-latitudes are consistent with our proxy interpretation. Article in Journal/Newspaper Fennoscandia Hereon Publications (Helmholtz-Zentrum) Geophysical Research Letters 38 5 n/a n/a |
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Open Polar |
collection |
Hereon Publications (Helmholtz-Zentrum) |
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fthzgzmk |
language |
English |
topic |
info:eu-repo/classification/ddc/551 |
spellingShingle |
info:eu-repo/classification/ddc/551 Gagen, M. Zorita, E. McCarroll, D. Young, G.H.F. Grudd, H. Jalkanen, R. Loader, N.J. Robertson, I. Kirchhefer, A. Cloud response to summer temperatures in Fennoscandia over the last thousand years |
topic_facet |
info:eu-repo/classification/ddc/551 |
description |
Cloud cover is one of the most important factors controlling the radiation balance of the Earth. The response of cloud cover to increasing global temperatures represents the largest uncertainty in model estimates of future climate because the cloud response to temperature is not well-constrained. Here we present the first regional reconstruction of summer sunshine over the past millennium, based on the stable carbon isotope ratios of pine treerings from Fennoscandia. Comparison with the regional temperature evolution reveals the Little Ice Age (LIA) to have been sunny, with cloudy conditions in the warmest periods of the Medieval at this site. A negative shortwave cloud feedback is indicated at high latitude. A millennial climate simulation suggests that regionally low temperatures during the LIA were mostly maintained by a weaker greenhouse effect due to lower humidity. Simulations of future climate that display a negative shortwave cloud feedback for high-latitudes are consistent with our proxy interpretation. |
format |
Article in Journal/Newspaper |
author |
Gagen, M. Zorita, E. McCarroll, D. Young, G.H.F. Grudd, H. Jalkanen, R. Loader, N.J. Robertson, I. Kirchhefer, A. |
author_facet |
Gagen, M. Zorita, E. McCarroll, D. Young, G.H.F. Grudd, H. Jalkanen, R. Loader, N.J. Robertson, I. Kirchhefer, A. |
author_sort |
Gagen, M. |
title |
Cloud response to summer temperatures in Fennoscandia over the last thousand years |
title_short |
Cloud response to summer temperatures in Fennoscandia over the last thousand years |
title_full |
Cloud response to summer temperatures in Fennoscandia over the last thousand years |
title_fullStr |
Cloud response to summer temperatures in Fennoscandia over the last thousand years |
title_full_unstemmed |
Cloud response to summer temperatures in Fennoscandia over the last thousand years |
title_sort |
cloud response to summer temperatures in fennoscandia over the last thousand years |
publisher |
AGU |
publishDate |
2011 |
url |
https://publications.hereon.de/id/28737 https://publications.hzg.de/id/28737 http://www.hzg.de/imperia/md/content/gkss/zentrale_einrichtungen/bibliothek/journals/2011/Gagen-georeslett.pdf |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_source |
issn:0094-8276 Gagen, M.; Zorita, E.; McCarroll, D.; Young, G.H.F.; Grudd, H.; Jalkanen, R.; Loader, N.J.; Robertson, I.; Kirchhefer, A.: Cloud response to summer temperatures in Fennoscandia over the last thousand years. In: Geophysical Research Letters. Vol. 38 (2011) L05701. (DOI:10.1029/2010GL046216) |
op_relation |
http://dx.doi.org/10.1029/2010GL046216 urn:issn:0094-8276 https://publications.hereon.de/id/28737 https://publications.hzg.de/id/28737 http://www.hzg.de/imperia/md/content/gkss/zentrale_einrichtungen/bibliothek/journals/2011/Gagen-georeslett.pdf |
op_rights |
info:eu-repo/semantics/openAccess open_access oa_gruen |
op_doi |
https://doi.org/10.1029/2010GL046216 |
container_title |
Geophysical Research Letters |
container_volume |
38 |
container_issue |
5 |
container_start_page |
n/a |
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n/a |
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1768386823554334720 |