638 years of summer temperature variability over the Bhutanese Himalaya

noaa-tree-18320 Krusic - Ura-Dhur Composite - PCSN - ITRDB BT021 Krusic, P.J.; Cook, E.R.; Dukpa, D. Krusic - Ura-Dhur Composite - PCSN - ITRDB BT021 2015-04-01 NCDC-Paleoclimatology ONLINE Files 10.25921/7ch6-zf50 https://www.ncdc.noaa.gov/paleo/study/18320 Investigator P.J. Krusic Investigator E.R. Cook Investigator D. 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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: DPS19B; 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: DPS25B; 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 width geoscientificInformation PCSN Picea spinulosa (Griff.) Beissn. Sikkim spruce xi ma la ya yun shan 1280 AD 2013 AD 670 cal yr BP -63 cal yr BP Complete 27.4223 27.4223 90.9675 90.9675 3268 3268 Continent Asia Southcentral Asia Bhutan Ura-Dhur Composite>LATITUDE 27.4223>LONGITUDE 90.9675 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 Krusic, P.J., E.R. Cook, D. Dukpa, A. Putnam, S. Rupper, and J. Schaefer 2015 638 years of summer temperature variability over the Bhutanese Himalaya Geophysical Research Letters 10.1002/2015GL063566 http://onlinelibrary.wiley.com/doi/10.1002/2015GL063566/abstract

High-resolution tree-ring reconstructions from the Himalaya provide essential context for assessing impacts of future climate change on regional water reserves and downstream agriculture. Here we evaluate a small network of tree-ring chronologies from Bhutan to produce a 638-year summer temperature reconstruction, from 1376 - 2013 CE. Relative to the 1950 - 2013 CE average summer temperature three prominent cold periods stand out, 2 in the mid 15th century, and one in the late 17th century. The warmest period began in the first decade of the 21st century coinciding with the timing of general glacier recession in the eastern Himalaya that continues to the present. The Bhutan temperature reconstruction exhibits a significant correlation to known volcanic eruptions (p = 97%) and anomalously cold periods appear to align with solar irradiance minima in the 15th, late 17th and early 19th centuries, implying a link between solar variability and decadal-scale temperature variability. STUDY NOTES: NOAA Template Chronology file added 2018-12-19. NOAA Template Raw Measurements file added 2019-04-08.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/asia/bt021.rwl GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/bt021.txt GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/asia/bt021-noaa.rwl Raw Measurements - NOAA Template File; bt021-noaa.rwl GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/asia/bt021.crn GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/asia/bt021-noaa.crn Chronology - NOAA Template File; bt021-noaa.crn USA/NOAA DIF Version 9.8.4 2019-05-17 2019-05-17