noaa-tree-14737 Wiles - Juneau Mountain - TSME - ITRDB AK130 Wiles, G.; Jarvis, S.K.; D'Arrigo, R.D. Wiles - Juneau Mountain - TSME - ITRDB AK130 2013-05-22 NCDC-Paleoclimatology ONLINE Files 10.25921/g24z-sk73 https://www.ncdc.noaa.gov/paleo/study/14737 Investigator G. Wiles Investigator S.K. Jarvis Investigator R.D. D'Arrigo earth science paleoclimate tree ring total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: JM03S; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999 earth science paleoclimate tree ring total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: JM06S; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999 earth science paleoclimate tree ring total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: JM06N; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999 earth science paleoclimate tree ring total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: JM01a; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999 earth science paleoclimate tree ring total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: JM12N; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999 earth science paleoclimate tree ring tree ring standardized growth index,null,null,null,null,tree ring,composited,standard,N,null earth science paleoclimate tree ring total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: JM01b; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999 earth science paleoclimate tree ring total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: JM03N; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999 earth science paleoclimate tree ring total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: JM10N; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999 earth science paleoclimate tree ring total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: JM02N; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999 earth science paleoclimate tree ring total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: JM04S; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999 earth science paleoclimate tree ring total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: JM05N; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999 earth science paleoclimate tree ring total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: JM09S; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999 earth science paleoclimate tree ring total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: JM11N; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999 earth science paleoclimate tree ring number of samples,null,null,count,null,tree ring,null,null,N,null earth science paleoclimate tree ring total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: JM09N; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999 earth science paleoclimate tree ring total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: JM02S; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999 earth science paleoclimate tree ring age,null,null,year Common Era,null,tree ring,null,null,N,null earth science paleoclimate tree ring total ring width,null,null,millimeter,null,tree ring,null,null,N,units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999 earth science paleoclimate tree ring tree ring standardized growth index,null,null,null,null,tree ring,composited,residual,N,null earth science paleoclimate tree ring total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: JM04N; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999 earth science paleoclimate tree ring total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: JM06NW; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999 earth science paleoclimate tree ring total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: JM07N; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999 earth science paleoclimate tree ring tree ring standardized growth index,null,null,null,null,tree ring,composited,ARSTAN,N,null earth science paleoclimate tree-ring width geoscientificInformation temperature TSME Tsuga mertensiana (Bong.) Carrière mountain hemlock 1557 AD 1999 AD 393 cal yr BP -49 cal yr BP Complete 58.3 58.3 -134.3833 -134.3833 540 540 Continent North America United States Of America Alaska Juneau Mountain>LATITUDE 58.3>LONGITUDE -134.3833 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 Jarvis, S.K., Wiles, G.C., Appleton, S.N., D'Arrigo, R.D. and Lawson, D.E. 2013. A warming-induced biome shift detected in tree growth of Mountain Hemlock (Tsuga mertensiana (Bong.) Carriere) along the Gulf of Alaska. Arctic, Antarctic and Alpine Research, Vol. 45, No. 2, pp. 211-218. DOI: 10.1657/1938-4246-45.211.

Recent observations of divergence between tree growth at high-latitude sites and temperature, as well as the decline of yellow cedar [Callitropsis nootkatensis (D. Don) Oerst. ex D.P. Little] in southeast Alaska due to warming, emphasize a need to investigate nonstationary climate response of Alaskan coastal forests to warming in other tree species. Comparison of annual tree growth in mountain hemlock [Tsuga mertensiana (Bong.)Carriere] to mean monthly temperature and precipitation data from Sitka, Alaska, from A.D. 1830s to 1990s along an elevational transect reveals nonstationarity in tree growth response to climate that suggests an ongoing biome shift. We observe a marked weakening in the positive relationship between annual growth and warmer growth season temperatures at low-elevation hemlock sites, and a concurrent increase in growth and sensitivity at higher elevations coupled with increased correlation between growth and April precipitation at all sites along our transects. As previously observed with yellow cedar, the mechanism of the hemlock biome shift may be due to an increased susceptibility of roots to damage from late frosts resulting from earlier seasonal loss of protective snowpack. STUDY NOTES: NOAA Template Chronology file added 2018-12-20. NOAA Template Raw Measurements file added 2019-02-08.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/ak130.crn GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/ak130a.crn GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/ak130a-noaa.crn Chronology - NOAA Template File; ak130a-noaa.crn GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/ak130.txt GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/ak130r.crn GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/ak130-noaa.crn Chronology - NOAA Template File; ak130-noaa.crn GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/ak130.rwl GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/ak130-noaa.rwl Raw Measurements - NOAA Template File; ak130-noaa.rwl GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/ak130r-noaa.crn Chronology - NOAA Template File; ak130r-noaa.crn USA/NOAA DIF Version 9.8.4 2019-02-13 2019-02-13