noaa-tree-1003942 Glaciar Frias Tree ring width, PAGES LOTRED-SA Version Villalba, R. Glaciar Frias Tree ring width, PAGES LOTRED-SA Version 2013-02-28 NCDC-Paleoclimatology ONLINE Files 10.25921/djt1-rd12 https://www.ncdc.noaa.gov/paleo/study/1003942 Investigator R. Villalba earth science paleoclimate tree-ring geoscientificInformation PAGES 2k Network NOPU Nothofagus pumilio (Poepp. & Endl.) Reiche lenga 1802 AD 1985 AD 148 cal yr BP -35 cal yr BP Complete -41.17 -41.17 -71.93 -71.93 1200 1200 Continent South America Argentina Glaciar Frias>LATITUDE -41.17>LONGITUDE -71.93 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 Villalba, R 1990 Quaternary Research 34 3 346-360 10.1016/0033-5894(90)90046-N

Millennium-old alerce trees (Fitzroya cupressoides (Mol.) Johnst.) have been used to develop a 1120-year reconstruction of the summer temperature departures for the Andes of northern Patagonia in Argentina. Four main climatic episodes can be distinguished in this proxy paleoclimatic record. The first, a cold and moist interval from A.D. 900 to 1070, was followed by a warm-dry period from A.D. 1080 to 1250 correlative with the Medieval warm epoch of Europe. Afterward, a long, cold-moist period followed from A.D. 1270 to 1670, peaking around A.D. 1340 and 1650. These cold maxima are contemporaneous with two principal Little Ice Age events registered in the Northern Hemisphere. Warmer conditions then resumed between A.D. 1720 and 1790. These episodes are supported by glaciological and palynological data in Patagonia. Following a cold period in the early 1800s, tree-ring indices have oscillated around the long-term mean, except for a warmer period from A.D. 1850 to 1890. Correlations between the Rio Alerce reconstruction and the regional weather stations indicate that the tree-ring variations are correlated with a homogeneous summer weather pattern covering Patagonia east of the Andes from 38° to 50°S. STUDY NOTES: Uploaded by R. Neukom, data obtained from NOAA Paleo DB. These are not raw data but processed and truncated chronologies. Details see (Neukom & Gergis 2011, The Holocene, DOI: 10.1177/0959683611427335). For the raws contact the authors or check ITRDB ARGE039.

GET DATA https://www.ncdc.noaa.gov/paleo/study/5165 Original Data Source; 5165 GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/pages2k/lotred-sa2k/arge039-lotred.txt USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11