Spatial Signature of Solar Forcing over the North Atlantic Summer Climate in the Past Millennium
We investigate the effects of solar forcing during summer on the North Atlantic climate in comprehensive simulations of the preindustrial last millennium. We use two Earth System Models forced only by variations in Total Solar Irradiance (TSI). Specifically, we examine how different statistical tech...
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fthzgzmk:oai:publications.hereon.de:38509 2023-06-11T04:14:21+02:00 Spatial Signature of Solar Forcing over the North Atlantic Summer Climate in the Past Millennium Pyrina, M. Moreno-Chamarro, E. Wagner, S. Zorita, E. 2019 https://publications.hereon.de/id/38509 https://publications.hzg.de/id/38509 https://doi.org/10.5194/esd-2019-50 en eng EGU - Copernicus Publication https://dx.doi.org/10.5194/esd-2019-50 urn:issn:2190-4995 https://publications.hereon.de/id/38509 https://publications.hzg.de/id/38509 info:eu-repo/semantics/openAccess open_access oa_gold issn:2190-4995 Pyrina, M.; Moreno-Chamarro, E.; Wagner, S.; Zorita, E.: Spatial Signature of Solar Forcing over the North Atlantic Summer Climate in the Past Millennium. In: Earth System Dynamics Discussions. Goettingen: EGU - Copernicus Publication, 2019. (DOI: /10.5194/esd-2019-50) info:eu-repo/semantics/other Sonstiges 2019 fthzgzmk https://doi.org/10.5194/esd-2019-50 2023-05-28T23:24:58Z We investigate the effects of solar forcing during summer on the North Atlantic climate in comprehensive simulations of the preindustrial last millennium. We use two Earth System Models forced only by variations in Total Solar Irradiance (TSI). Specifically, we examine how different statistical techniques commonly used in current literature, namely linear methods and composite techniques can condition our understanding of the effects of solar forcing on climate. We demonstrate that the results obtained are strongly shaped by internal model variability. Linear methods like regression and correlation are not suitable to separate solar impacts on summer climate from internal variability. Composite maps show a response of SSTs off the European coasts and atmospheric blocking-like pressure anomalies over the subpolar North Atlantic, with some model-dependent variations of its spatial patterns and extent. In the models analyzed, the relationship of TSI to the tropospheric and surface circulation is linked through a baroclinic response to diabatic heating at the ocean surface. A tendency toward blocking-like patterns over the middle and high latitudes might be subsequently created during summer and in high TSI periods. Other/Unknown Material North Atlantic Hereon Publications (Helmholtz-Zentrum) |
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Open Polar |
collection |
Hereon Publications (Helmholtz-Zentrum) |
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fthzgzmk |
language |
English |
description |
We investigate the effects of solar forcing during summer on the North Atlantic climate in comprehensive simulations of the preindustrial last millennium. We use two Earth System Models forced only by variations in Total Solar Irradiance (TSI). Specifically, we examine how different statistical techniques commonly used in current literature, namely linear methods and composite techniques can condition our understanding of the effects of solar forcing on climate. We demonstrate that the results obtained are strongly shaped by internal model variability. Linear methods like regression and correlation are not suitable to separate solar impacts on summer climate from internal variability. Composite maps show a response of SSTs off the European coasts and atmospheric blocking-like pressure anomalies over the subpolar North Atlantic, with some model-dependent variations of its spatial patterns and extent. In the models analyzed, the relationship of TSI to the tropospheric and surface circulation is linked through a baroclinic response to diabatic heating at the ocean surface. A tendency toward blocking-like patterns over the middle and high latitudes might be subsequently created during summer and in high TSI periods. |
format |
Other/Unknown Material |
author |
Pyrina, M. Moreno-Chamarro, E. Wagner, S. Zorita, E. |
spellingShingle |
Pyrina, M. Moreno-Chamarro, E. Wagner, S. Zorita, E. Spatial Signature of Solar Forcing over the North Atlantic Summer Climate in the Past Millennium |
author_facet |
Pyrina, M. Moreno-Chamarro, E. Wagner, S. Zorita, E. |
author_sort |
Pyrina, M. |
title |
Spatial Signature of Solar Forcing over the North Atlantic Summer Climate in the Past Millennium |
title_short |
Spatial Signature of Solar Forcing over the North Atlantic Summer Climate in the Past Millennium |
title_full |
Spatial Signature of Solar Forcing over the North Atlantic Summer Climate in the Past Millennium |
title_fullStr |
Spatial Signature of Solar Forcing over the North Atlantic Summer Climate in the Past Millennium |
title_full_unstemmed |
Spatial Signature of Solar Forcing over the North Atlantic Summer Climate in the Past Millennium |
title_sort |
spatial signature of solar forcing over the north atlantic summer climate in the past millennium |
publisher |
EGU - Copernicus Publication |
publishDate |
2019 |
url |
https://publications.hereon.de/id/38509 https://publications.hzg.de/id/38509 https://doi.org/10.5194/esd-2019-50 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
issn:2190-4995 Pyrina, M.; Moreno-Chamarro, E.; Wagner, S.; Zorita, E.: Spatial Signature of Solar Forcing over the North Atlantic Summer Climate in the Past Millennium. In: Earth System Dynamics Discussions. Goettingen: EGU - Copernicus Publication, 2019. (DOI: /10.5194/esd-2019-50) |
op_relation |
https://dx.doi.org/10.5194/esd-2019-50 urn:issn:2190-4995 https://publications.hereon.de/id/38509 https://publications.hzg.de/id/38509 |
op_rights |
info:eu-repo/semantics/openAccess open_access oa_gold |
op_doi |
https://doi.org/10.5194/esd-2019-50 |
_version_ |
1768392312279269376 |