noaa-tree-16139 Monteverde Cloud Forest, Costa Rica, Tree Cellulose d18O Data Anchukaitis, K.J.; Evans, M.N. Monteverde Cloud Forest, Costa Rica, Tree Cellulose d18O Data 2014-03-06 NCDC-Paleoclimatology ONLINE Files 10.25921/dp0c-g374 https://www.ncdc.noaa.gov/paleo/study/16139 Investigator K.J. Anchukaitis Investigator M.N. Evans earth science paleoclimate tree-ring oxygen isotopes geoscientificInformation Tropics hydrology 1900 AD 2002 AD 50 cal yr BP -52 cal yr BP Complete 10.2 10.2 -85.35 -85.35 1800 1800 Continent North America Central America Costa Rica Monteverde Cloud Forest>LATITUDE 10.2>LONGITUDE -85.35 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 Kevin J. Anchukaitis and Michael N. Evans 2010 Proceedings of the National Academy of Sciences 107 11 5036-5040 10.1073/pnas.0908572107 http://www.pnas.org/content/107/11/5036.abstract

Widespread amphibian extinctions in the mountains of the American tropics have been blamed on the interaction of anthropogenic climate change and a lethal pathogen. However, limited meteorological records make it difficult to conclude whether current climate conditions at these sites are actually exceptional in the context of natural variability. We use stable oxygen isotope measurements from trees without annual rings to reconstruct a century of hydroclimatology in the Monteverde Cloud Forest of Costa Rica. High-resolution measurements reveal coherent isotope cycles that provide annual chronological control and paleoclimate information. Climate variability is dominated by interannual variance in dry season moisture associated with El Niño Southern Oscillation events. There is no evidence of a trend associated with global warming. Rather, the extinction of the Monteverde golden toad (Bufo periglenes) appears to have coincided with an exceptionally dry interval caused by the 1986-1987 El Niño event. STUDY NOTES: Stable oxygen isotopes (d18O) measured at constant depth in two montane cloud forest trees (Pouteria, specimens MV12 and MV15), plus the d18O data on monthly age scale for the 2 trees and for a composite of both samples. IITRDB009

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010mv12monthly.txt Data File; Monteverde MV12 Monthly Tree d18O GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010mv12.txt Data File; Monteverde MV12 Tree d18O GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010composite.txt Data File; Monteverde Composite Monthly Tree d18O GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010mv15.txt Data File; Monteverde MV15 Tree d18O GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010mv15monthly.txt Data File; Monteverde MV15 Monthly Tree d18O USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11