noaa-cave-5438 Frisia et al. 2003 Grotta di Ernesto, Italy Speleothem Layer Thickness Data Frisia, S.; Borsato, A.; Preto, N.; McDermott, F. Frisia et al. 2003 Grotta di Ernesto, Italy Speleothem Layer Thickness Data 2003-07-01 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/5438 Investigator S. Frisia Investigator A. Borsato Investigator N. Preto Investigator F. McDermott earth science paleoclimate speleothems age,null,null,year Common Era,null,speleothems,null,null,N,null earth science paleoclimate speleothems growth rate,calcium carbonate,null,micrometer per year,null,speleothems,raw,optical microscopy|ultraviolet microscopy,N,null earth science paleoclimate speleothems lithology geoscientificInformation 1387 AD 2000 AD 563 cal yr BP -50 cal yr BP Complete 45.98 45.98 11.66 11.66 1167 1167 Continent Europe Southern Europe Italy Grotta di Ernesto>LATITUDE 45.98>LONGITUDE 11.66 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 Frisia, S.;Borsato, A.;Preto, N.;McDermott, F. 2003. Late Holocene annual growth in three Alpine stalagmites records the influence of solar activity and the North Atlantic Oscillation on winter climate. Earth and Planetary Science Letters, 216 (3), 411-424.

Annual growth rates and the ratio of dark to light-colored calcite within single annual laminae in three contemporaneously deposited Holocene speleothems from Grotta di Ernesto, an Alpine cave in northern Italy, respond to changes in surface temperature rather than precipitation. Based on monitoring of present-day calcite growth, and correlation with instrumental data for surface climatic conditions, we interpret a higher ratio of dark to light-colored calcite and the simultaneous thinning of annual laminae as indicative of colder-than-present winters. Such dark and thin laminae occur in those parts of the three stalagmites deposited from AD 1650 to 1713 and from AD 1798 to 1840, as reconstructed through lamina counting. These periods correspond to the well-known Maunder and Dalton Minima of solar activity. An 11-yr cyclicity in growth rate, coupled with reduced calcite deposition during the historic minima of solar activity, is indicative of a solar influence on lamina thickness. Spectral analysis of the lamina thickness data also suggests that the North Atlantic Oscillation variability influenced winter temperatures. Based on the present-day controls on cave calcite formation, we infer that high-frequency changes in solar activity modulated the seasonal duration of soil CO2 production.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/italy/ernesto2003.txt USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11