Surface air temperature variability reconstructed with tree rings for the Gulf of Alaska over the past 1200 years

noaa-recon-16015 Gulf of Alaska 1200 Year Surface Air Temperature Reconstruction Wiles, G.; D'Arrigo, R.D.; Barclay, D.; Wilson, R.J.S.; Jarvis, S.K.; Vargo, L.; Frank, D.C. Gulf of Alaska 1200 Year Surface Air Temperature Reconstruction 2014-02-05 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/16015 Investigator G. Wiles Investigator R.D. D'Arrigo Investigator D. Barclay Investigator R.J.S. Wilson Investigator S.K. Jarvis Investigator L. Vargo Investigator D.C. Frank earth science paleoclimate climate reconstructions|tree ring age,null,null,year Common Era,null,climate reconstructions|tree ring,null,null,N,null earth science paleoclimate climate reconstructions|tree ring surface air temperature,ring width,null,degree Celsius,Feb-Aug,climate reconstructions|tree ring,null,null,N,null earth science paleoclimate reconstructions air temperature geoscientificInformation Air Temperature Reconstruction 800 AD 2010 AD 1150 cal yr BP -60 cal yr BP Complete 57 61 -145 -136 0 0 Ocean Pacific Ocean North Pacific Ocean Gulf Of Alaska Gulf of Alaska>LATITUDE >LONGITUDE None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Gregory C. Wiles, Rosanne D. D'Arrigo, David Barclay, Rob S. Wilson, Stephanie K. Jarvis, Lauren Vargo, and David Frank 2014 Surface air temperature variability reconstructed with tree rings for the Gulf of Alaska over the past 1200 years The Holocene 24 2 198-208 10.1177/0959683613516815 http://hol.sagepub.com/content/24/2/198.abstract

A 1200-year-long tree-ring width record from living and subfossil mountain hemlock wood is used to reconstruct February through August temperatures for the Gulf of Alaska, providing a record of past climate variability for the Northeast Pacific sector that captures interannual to centennial timescales. The moderate elevation at the tree-ring sites has allowed these trees to retain their temperature signal without evidence of the so-called divergence effect, or underestimation of tree-ring inferred temperature trends, which is observed at many northern latitude forest locations. This 'divergence-free' reconstruction reveals centennial trends that include a warm interval centered on ad 950 for coastal Alaska that occurs around the time of the 'Medieval Warm Period', a warming that is only rivaled by recent decades. Spectral analysis of this reconstruction supports the centennial pacing identified as a 170-220-year cadence consistent with solar variability. On the decadal to bidecadal scale, the reconstruction reveals ~10- and 18-year cycles, which have been observed elsewhere in climate records for western North America and are linked to solar and lunar tidal forcing, respectively. Temperature minima that occur at ad 969-970 and 1698-1700 correspond with the timing of major volcanic events. This tree-ring reconstruction supports centennial modes of solar forcing as a driver of surface air temperatures in the Gulf of Alaska, with lunar tidal, solar variability, internal variability, and volcanism, impacting climate on annual to decadal timescales. STUDY NOTES: Gulf of Alaska February-August temperature reconstruction for the past 1200 years, based on living and subfossil mountain hemlock ring widths.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/gulf_of_alaska/goa2014temperature.txt Surface Air Temperature Reconstruction; Formatted Text File USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11