noaa-fire-22511 Mundo fire data from C Eléctrico, Patagonia - IMPD ARELE001 Mundo, I.A.; Villalba, R.; Veblen, T.T.; Kitzberger, T.; Holz, A.; Paritsis, J.; Ripalta, A. Mundo fire data from C Eléctrico, Patagonia - IMPD ARELE001 2017-09-01 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/22511 Investigator I.A. Mundo Investigator R. Villalba Investigator T.T. Veblen Investigator T. Kitzberger Investigator A. Holz Investigator J. Paritsis Investigator A. Ripalta earth science paleoclimate fire history|tree ring tree demographic and injury and fire event code,wood,null,null,null,fire history|tree ring,null,null,C,FHX2 data format; refer to IMPD documentation for description of codes earth science paleoclimate fire history|tree ring age,null,null,null,null,fire history|tree ring,null,null,N,null earth science paleoclimate fire history fire scar dates geoscientificInformation NOPU Nothofagus pumilio (Poepp. & Endl.) Reiche lenga 1845 AD 2010 AD 105 cal yr BP -60 cal yr BP Complete -49.24077 -49.24077 -72.96423 -72.96423 535 535 Continent South America Argentina Santa Cruz C Eléctrico>LATITUDE -49.24077>LONGITUDE -72.96423 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 Mundo,I.A.;Villalba,R.;Veblen,T.T.;Kitzberger,T.;Holz,A.;Paritsis,J.;Ripalta,A. 2017 Ecosphere 8 9 10.1002/ecs2.1932

Fire is a major disturbance affecting forests worldwide with significant economic, social and ecological impacts. The southernmost forests on Earth extend continuously along the Andes from mid- to subantarctic latitudes in South America. In this region, warming and drying trends since the mid-20th century have been linked to a positive trend in the Southern Annual Mode (SAM), the leading mode of extratropical climate variability in the Southern Hemisphere. Due to the scarcity of documentary fire records and the lack of tree-ring fire histories, little is known about how wildfire activity responds to shifts in the westerly circulation pattern and associated climatic variability in the Andean region south of c. 44°S. For the first time, we applied dendrochronological techniques to reconstruct fire history from the angiosperm Nothofagus pumilio at 16 sites distributed from c. 44 to 50oS to determine relationships between fire occurrence and the two primary drivers of wildfire activity: climate variability and human activities. Partial cross-sections with fire-scars were collected from 363 trees in Argentina and Chile. Chronologies of annually resolved fire-scar dates start in 1791 and show a pattern of higher fire frequency during the 20th century, concurrent with the human occupation and colonization processes in southern Patagonia. Years of widespread fire occurring synchronously in two or more disjunct sites are associated with broad-scale climatic anomalies. Intense droughts inferred from extreme departures in temperature, precipitation and the Standardized Precipitation-Evapotranspiration Index (SPEI) during the growing seasons of 1944 and 1962 are consistent with the two most severe fires at northern sites. Extended droughts, reflected by the association of fire occurrence with 6-month cumulative precipitation and SPEI, create conditions for widespread fires at the southern sites (south of c. 46°S). Regional fires were concurrent with significant positive departures of SAM during the austral spring-summer. This tree-ring fire record reveals the influences of both climate variability and human activities on fire in the N. pumilio forests across the Andes, and also establishes the feasibility of using this tree species as a natural archive of fire history.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/southamerica/arele001.txt More Information; arele001.txt GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/southamerica/arele001.fhx Fire Scar Data; arele001.fhx GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/southamerica/fire-hist-graphs/arele001-fire-hist-graph.png Fire History Graph; arele001-fire-hist-graph.png GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/southamerica/fire-hist-graphs/arele001-fire-hist-graph.pdf Fire History Graph; arele001-fire-hist-graph.pdf USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11