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Wind regime changes...
Wind regime changes in the Euro-Atlantic region driven by Late-Holocene Grand Solar Minima
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- Harding, P. (author)
- Royal Holloway University of London
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- Martin-Puertas, C. (author)
- Royal Holloway University of London
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- Sjolte, J. (author)
- Lund University,Lunds universitet,MERGE: ModElling the Regional and Global Earth system,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Kvartärgeologi,Geologiska institutionen,Centre for Environmental and Climate Science (CEC),Faculty of Science,Quaternary Sciences,Department of Geology
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- Walsh, A. A. (author)
- Royal Holloway University of London
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- Tjallingii, R. (author)
- GFZ German Research Centre for Geosciences
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- Langdon, C. (author)
- University of Southampton
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- Blockley, S. P.E. (author)
- Royal Holloway University of London
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- Brauer, A. (author)
- University of Potsdam
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- Langdon, P. (author)
- University of Southampton
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- Milner, A. M. (author)
- Royal Holloway University of London
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- Muscheler, R. (author)
- Lund University,Lunds universitet,MERGE: ModElling the Regional and Global Earth system,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Kvartärgeologi,Geologiska institutionen,Centre for Environmental and Climate Science (CEC),Faculty of Science,Quaternary Sciences,Department of Geology
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- Perez, M. (author)
- Royal Holloway University of London
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(creator_code:org_t)
- 2022-07-30
- 2022
- English.
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In: Climate Dynamics. - : Springer Science and Business Media LLC. - 0930-7575 .- 1432-0894.
- Related links:
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http://dx.doi.org/10...
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Abstract
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- Understanding atmospheric response to radiative forcing, including the intensity and distribution of wind patterns is critical as this might have important implications in the coming decades. Long-term episodes of reduced solar activity (i.e. Grand Solar Minima, GSM) have triggered rapid climate change in the past, recorded in proxy-based records, including varved sediments from Meerfelder Maar, Germany, where the Homeric GSM (~ 2800 years ago) was studied. This study reconstructs windy conditions during the same GSM from Diss Mere, another varved record in England, to support the solar-wind linkage in the North Atlantic-European region. We use diatoms as proxies for windiness and support the palaeolimnological and palaeoclimate interpretation with a multi-proxy approach, including sedimentological, geochemical, and biological (chironomids and pollen) evidence. The diatom assemblage documents a shift from Pantocsekiella ocellata dominance to Stephanodiscus parvus and Lindavia comta, indicating a shift to more turbulent waters from ~ 2767 ± 28, linked to increased windiness. This shift is synchronous with changes in 14C production, linked to solar activity changes during the GSM. Both proxy records reflect a rapid and synchronous atmospheric response (i.e. stronger winds) at the onset and during the GSM in the North Atlantic and continental Europe. In order to test whether this solar-wind linkage is consistent during other GSMs and to understand the underlying climate dynamics, we analyse the wind response to solar forcing at the two study sites during the Little Ice Age, a period that includes several GSMs. For this, we have used a reconstruction based on a 1200-year-long simulation with an isotope-enabled climate model. Our study suggests that wind anomalies in the North Atlantic-European sector may relate to an anomalous atmospheric circulation in response to long-term solar forcing leading to north-easterlies modulated by the East Atlantic pattern.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
Keyword
- Atmospheric circulation
- Climate change
- Diatoms
- Solar activity
- Varves
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Harding, P.
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Martin-Puertas, ...
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Sjolte, J.
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Walsh, A. A.
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Tjallingii, R.
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Langdon, C.
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show more...
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Blockley, S. P.E ...
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Brauer, A.
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Langdon, P.
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Milner, A. M.
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Muscheler, R.
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Perez, M.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Climate Research
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Meteorology and ...
- Articles in the publication
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Climate Dynamics
- By the university
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Lund University