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Holocene climate variability of the Norwegian Atlantic Current during high and low solar insolation forcing
A high‐resolution sediment core from the Vøring Plateau has been studied to document the centennial to millennial variability of the surface water conditions during the Holocene Climate Optimum (HCO) and the late Holocene period (LHP) in order to evaluate the effects of solar insolation on surface o...
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Published in: | Paleoceanography 2011-06, Vol.26 (2), p.np-n/a |
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description | A high‐resolution sediment core from the Vøring Plateau has been studied to document the centennial to millennial variability of the surface water conditions during the Holocene Climate Optimum (HCO) and the late Holocene period (LHP) in order to evaluate the effects of solar insolation on surface ocean climatology. Quantitative August summer sea surface temperatures (SSSTs) with a time resolution of 2–40 years are reconstructed by using three different diatom transfer function methods. Spectral‐ and scale‐space methods are applied to the records to explore the variability present in the time series at different time scales. The SSST development in core MD95‐2011 shows a delayed response to Northern Hemisphere maximum summer insolation at ∼11,000 years B.P. The record shows the maximum SSST of the HCO to be from 7.3 to 8.9 kyr B.P., which implies that the site was located in the regional warm water pool removed from the oceanic fronts and Arctic waters. Superimposed on the general cooling trend are higher‐frequency variabilities at time scales of 80–120, 210–320, 320–640, and 640–1280 years. The climate variations at the time scale of 320–640 years are documented both for periods of high and low solar orbital insolation. We found evidence that the submillennial‐scale mode of variability (640–900 years) in SSST evident during the LHP is directly associated with varying solar forcing. At the shorter scale of 260–450 years, the SSST during the LHP displays a lagged response to solar forcing with a phase‐locked behavior indicating the existence of a feedback mechanism in the climate system triggered by variations in the solar constant as well as the role of the thermal inertia of the ocean. The abruptness of the cooling events in the LHP, especially pronounced during the onsets of the Holocene Cold Period I (approximately 2300 years B.P.) and the Little Ice Age (approximately 550 years B.P.), can be explained by a shutdown of deep convection in the Nordic Seas in response to negative solar insolation anomalies. These cooling events are on the order of 1.5°C.
Key Points
Centennial‐ to millennial‐scale variations in SST
Deep convection shutdown in the Nordic Sea
During HCO the SST show less consistent solar irradiance response |
doi_str_mv | 10.1029/2010PA002002 |
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Key Points
Centennial‐ to millennial‐scale variations in SST
Deep convection shutdown in the Nordic Sea
During HCO the SST show less consistent solar irradiance response</description><identifier>ISSN: 0883-8305</identifier><identifier>ISSN: 2572-4517</identifier><identifier>EISSN: 1944-9186</identifier><identifier>EISSN: 2572-4525</identifier><identifier>DOI: 10.1029/2010PA002002</identifier><language>eng</language><publisher>Washington: Blackwell Publishing Ltd</publisher><subject>Bacillariophyceae ; climate change ; Climate system ; Climate variability ; Climatology ; Convection ; Cooling ; diatoms ; Holocene ; Ice ages ; Marine ; Norwegian Atlantic Current ; Sea surface temperature ; solar insolation ; Surface water</subject><ispartof>Paleoceanography, 2011-06, Vol.26 (2), p.np-n/a</ispartof><rights>Copyright 2011 by the American Geophysical Union.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a5049-4c5f7c1a6f6eb0673a373459c84ef8933ad151e38f7f893daedf5abde2ece15c3</citedby><cites>FETCH-LOGICAL-a5049-4c5f7c1a6f6eb0673a373459c84ef8933ad151e38f7f893daedf5abde2ece15c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1029%2F2010PA002002$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2F2010PA002002$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,11514,27924,27925,46468,46892</link.rule.ids></links><search><creatorcontrib>Berner, K. S.</creatorcontrib><creatorcontrib>Koç, N.</creatorcontrib><creatorcontrib>Godtliebsen, F.</creatorcontrib><creatorcontrib>Divine, D.</creatorcontrib><title>Holocene climate variability of the Norwegian Atlantic Current during high and low solar insolation forcing</title><title>Paleoceanography</title><addtitle>Paleoceanography</addtitle><description>A high‐resolution sediment core from the Vøring Plateau has been studied to document the centennial to millennial variability of the surface water conditions during the Holocene Climate Optimum (HCO) and the late Holocene period (LHP) in order to evaluate the effects of solar insolation on surface ocean climatology. Quantitative August summer sea surface temperatures (SSSTs) with a time resolution of 2–40 years are reconstructed by using three different diatom transfer function methods. Spectral‐ and scale‐space methods are applied to the records to explore the variability present in the time series at different time scales. The SSST development in core MD95‐2011 shows a delayed response to Northern Hemisphere maximum summer insolation at ∼11,000 years B.P. The record shows the maximum SSST of the HCO to be from 7.3 to 8.9 kyr B.P., which implies that the site was located in the regional warm water pool removed from the oceanic fronts and Arctic waters. Superimposed on the general cooling trend are higher‐frequency variabilities at time scales of 80–120, 210–320, 320–640, and 640–1280 years. The climate variations at the time scale of 320–640 years are documented both for periods of high and low solar orbital insolation. We found evidence that the submillennial‐scale mode of variability (640–900 years) in SSST evident during the LHP is directly associated with varying solar forcing. At the shorter scale of 260–450 years, the SSST during the LHP displays a lagged response to solar forcing with a phase‐locked behavior indicating the existence of a feedback mechanism in the climate system triggered by variations in the solar constant as well as the role of the thermal inertia of the ocean. The abruptness of the cooling events in the LHP, especially pronounced during the onsets of the Holocene Cold Period I (approximately 2300 years B.P.) and the Little Ice Age (approximately 550 years B.P.), can be explained by a shutdown of deep convection in the Nordic Seas in response to negative solar insolation anomalies. These cooling events are on the order of 1.5°C.
Key Points
Centennial‐ to millennial‐scale variations in SST
Deep convection shutdown in the Nordic Sea
During HCO the SST show less consistent solar irradiance response</description><subject>Bacillariophyceae</subject><subject>climate change</subject><subject>Climate system</subject><subject>Climate variability</subject><subject>Climatology</subject><subject>Convection</subject><subject>Cooling</subject><subject>diatoms</subject><subject>Holocene</subject><subject>Ice ages</subject><subject>Marine</subject><subject>Norwegian Atlantic Current</subject><subject>Sea surface temperature</subject><subject>solar insolation</subject><subject>Surface water</subject><issn>0883-8305</issn><issn>2572-4517</issn><issn>1944-9186</issn><issn>2572-4525</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNp9kF1rFDEUhoMouFbv_AEBb7xwbD4mM5PLZa3dwrKtUullyGZOdtOmSU0yrvvvzbIi4oVw4OXA8x4OD0JvKflICZPnjFByMyeE1XmGZlS2bSPp0D1HMzIMvBk4ES_Rq5zvCaGt6PgMPSyjjwYCYOPdoy6Af-jk9MZ5Vw44Wlx2gNcx7WHrdMDz4nUozuDFlBKEgscpubDFO7fdYR1G7OMe5-h1wi4cs7gYsI3JVOo1emG1z_Dmd56hb58vbhfLZnV9ebWYrxotSCub1gjbG6o728GGdD3XvOetkGZowQ6Scz1SQYEPtj-uo4bRCr0ZgYEBKgw_Q-9Pd59S_D5BLurRZQO-vg5xyooKJqVoKeMVffcPeh-nFOp3ivYd47R6E5X6cKJMijknsOopVVnpoChRR_Pqb_MVZyd87zwc_suqm_nqmna9rKXmVHK5wM8_JZ0eVFXQC3W3vlTL9eLu65dPTN3yX3b2lKg</recordid><startdate>201106</startdate><enddate>201106</enddate><creator>Berner, K. 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S. ; Koç, N. ; Godtliebsen, F. ; Divine, D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a5049-4c5f7c1a6f6eb0673a373459c84ef8933ad151e38f7f893daedf5abde2ece15c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Bacillariophyceae</topic><topic>climate change</topic><topic>Climate system</topic><topic>Climate variability</topic><topic>Climatology</topic><topic>Convection</topic><topic>Cooling</topic><topic>diatoms</topic><topic>Holocene</topic><topic>Ice ages</topic><topic>Marine</topic><topic>Norwegian Atlantic Current</topic><topic>Sea surface temperature</topic><topic>solar insolation</topic><topic>Surface water</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Berner, K. S.</creatorcontrib><creatorcontrib>Koç, N.</creatorcontrib><creatorcontrib>Godtliebsen, F.</creatorcontrib><creatorcontrib>Divine, D.</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Ecology Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest Central</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>ProQuest Central Student</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Science Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central Basic</collection><jtitle>Paleoceanography</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Berner, K. S.</au><au>Koç, N.</au><au>Godtliebsen, F.</au><au>Divine, D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Holocene climate variability of the Norwegian Atlantic Current during high and low solar insolation forcing</atitle><jtitle>Paleoceanography</jtitle><addtitle>Paleoceanography</addtitle><date>2011-06</date><risdate>2011</risdate><volume>26</volume><issue>2</issue><spage>np</spage><epage>n/a</epage><pages>np-n/a</pages><issn>0883-8305</issn><issn>2572-4517</issn><eissn>1944-9186</eissn><eissn>2572-4525</eissn><abstract>A high‐resolution sediment core from the Vøring Plateau has been studied to document the centennial to millennial variability of the surface water conditions during the Holocene Climate Optimum (HCO) and the late Holocene period (LHP) in order to evaluate the effects of solar insolation on surface ocean climatology. Quantitative August summer sea surface temperatures (SSSTs) with a time resolution of 2–40 years are reconstructed by using three different diatom transfer function methods. Spectral‐ and scale‐space methods are applied to the records to explore the variability present in the time series at different time scales. The SSST development in core MD95‐2011 shows a delayed response to Northern Hemisphere maximum summer insolation at ∼11,000 years B.P. The record shows the maximum SSST of the HCO to be from 7.3 to 8.9 kyr B.P., which implies that the site was located in the regional warm water pool removed from the oceanic fronts and Arctic waters. Superimposed on the general cooling trend are higher‐frequency variabilities at time scales of 80–120, 210–320, 320–640, and 640–1280 years. The climate variations at the time scale of 320–640 years are documented both for periods of high and low solar orbital insolation. We found evidence that the submillennial‐scale mode of variability (640–900 years) in SSST evident during the LHP is directly associated with varying solar forcing. At the shorter scale of 260–450 years, the SSST during the LHP displays a lagged response to solar forcing with a phase‐locked behavior indicating the existence of a feedback mechanism in the climate system triggered by variations in the solar constant as well as the role of the thermal inertia of the ocean. The abruptness of the cooling events in the LHP, especially pronounced during the onsets of the Holocene Cold Period I (approximately 2300 years B.P.) and the Little Ice Age (approximately 550 years B.P.), can be explained by a shutdown of deep convection in the Nordic Seas in response to negative solar insolation anomalies. These cooling events are on the order of 1.5°C.
Key Points
Centennial‐ to millennial‐scale variations in SST
Deep convection shutdown in the Nordic Sea
During HCO the SST show less consistent solar irradiance response</abstract><cop>Washington</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/2010PA002002</doi><tpages>15</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Bacillariophyceae climate change Climate system Climate variability Climatology Convection Cooling diatoms Holocene Ice ages Marine Norwegian Atlantic Current Sea surface temperature solar insolation Surface water |
title | Holocene climate variability of the Norwegian Atlantic Current during high and low solar insolation forcing |
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