%0 Journal Article %1 Trouet2009Persistent %A Trouet, Valérie %A Esper, Jan %A Graham, Nicholas E. %A Baker, Andy %A Scourse, James D. %A Frank, David C. %D 2009 %I American Association for the Advancement of Science %J Science %K paleo nao %N 5923 %P 78--80 %R 10.1126/science.1166349 %T Persistent Positive North Atlantic Oscillation Mode Dominated the Medieval Climate Anomaly %U http://dx.doi.org/10.1126/science.1166349 %V 324 %X The Medieval Climate Anomaly (MCA) was the most recent pre-industrial era warm interval of European climate, yet its driving mechanisms remain uncertain. We present here a 947-year-long multidecadal North Atlantic Oscillation (NAO) reconstruction and find a persistent positive NAO during the MCA. Supplementary reconstructions based on climate model results and proxy data indicate a clear shift to weaker NAO conditions into the Little Ice Age (LIA). Globally distributed proxy data suggest that this NAO shift is one aspect of a global MCA-LIA climate transition that probably was coupled to prevailing La Niña–like conditions amplified by an intensified Atlantic meridional overturning circulation during the MCA.

@article{Trouet2009Persistent, abstract = {The Medieval Climate Anomaly (MCA) was the most recent pre-industrial era warm interval of European climate, yet its driving mechanisms remain uncertain. We present here a 947-year-long multidecadal North Atlantic Oscillation (NAO) reconstruction and find a persistent positive NAO during the MCA. Supplementary reconstructions based on climate model results and proxy data indicate a clear shift to weaker NAO conditions into the Little Ice Age (LIA). Globally distributed proxy data suggest that this NAO shift is one aspect of a global MCA-LIA climate transition that probably was coupled to prevailing La Ni\~{n}a–like conditions amplified by an intensified Atlantic meridional overturning circulation during the MCA.}, added-at = {2018-06-18T21:23:34.000+0200}, author = {Trouet, Val\'{e}rie and Esper, Jan and Graham, Nicholas E. and Baker, Andy and Scourse, James D. and Frank, David C.}, biburl = {https://www.bibsonomy.org/bibtex/2e4e13ce78b016c5b8e728a648959041a/pbett}, citeulike-article-id = {5013182}, citeulike-linkout-0 = {http://dx.doi.org/10.1126/science.1166349}, citeulike-linkout-1 = {http://www.sciencemag.org/content/324/5923/78.abstract}, citeulike-linkout-2 = {http://www.sciencemag.org/content/324/5923/78.full.pdf}, citeulike-linkout-3 = {http://www.sciencemag.org/cgi/content/abstract/324/5923/78}, citeulike-linkout-4 = {http://view.ncbi.nlm.nih.gov/pubmed/19342585}, citeulike-linkout-5 = {http://www.hubmed.org/display.cgi?uids=19342585}, comment = {(private-note)Data available from http://www.ncdc.noaa.gov/paleo/pubs/trouet2009/trouet2009.html at ftp://ftp.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/nao-trouet2009.txt or ftp://ftp.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/nao-trouet2009.xls}, day = 03, doi = {10.1126/science.1166349}, interhash = {ac8e41cdcce8c770caad45fbede58204}, intrahash = {e4e13ce78b016c5b8e728a648959041a}, issn = {1095-9203}, journal = {Science}, keywords = {paleo nao}, month = apr, number = 5923, pages = {78--80}, pmid = {19342585}, posted-at = {2011-11-17 17:41:42}, priority = {2}, publisher = {American Association for the Advancement of Science}, timestamp = {2018-06-22T18:32:06.000+0200}, title = {Persistent Positive North Atlantic Oscillation Mode Dominated the Medieval Climate Anomaly}, url = {http://dx.doi.org/10.1126/science.1166349}, volume = 324, year = 2009 }