noaa-tree-19886 Re-Standardized Tree-Ring Chronologies Breitenmoser, P.; Brönnimann, S.; Frank, D.C. Re-Standardized Tree-Ring Chronologies 2016-02-29 NCDC-Paleoclimatology ONLINE Files 10.25921/8v9k-2h26 https://www.ncdc.noaa.gov/paleo/study/19886 Investigator P. Breitenmoser Investigator S. Brönnimann Investigator D.C. Frank earth science paleoclimate tree-ring width geoscientificInformation MIXD Various taxa 0 AD 2000 AD 1950 cal yr BP -50 cal yr BP Complete -90 90 -180 180 Geographic Region Global Global>LATITUDE >LONGITUDE 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 Breitenmoser, P., Brönnimann, S., and Frank, D. 2014 Climate of the Past 10 437-449 10.5194/cp-10-437-2014 http://www.clim-past.net/10/437/2014/

We investigate relationships between climate and tree-ring data on a global scale using the process-based Vaganov-Shashkin Lite (VSL) forward model of tree-ring width formation. The VSL model requires as inputs only latitude, monthly mean temperature, and monthly accumulated precipitation. Hence, this simple, process-based model enables ring-width simulation at any location where monthly climate records exist. In this study, we analyse the growth response of simulated tree rings to monthly climate conditions obtained from the CRU TS3.1 data set back to 1901. Our key aims are (a) to assess the VSL model performance by examining the relations between simulated and observed growth at 2287 globally distributed sites, (b) indentify optimal growth parameters found during the model calibration, and (c) to evaluate the potential of the VSL model as an observation operator for data-assimilation-based reconstructions of climate from tree-ring width. The assessment of the growth-onset threshold temperature of approximately 4-6 C for most sites and species using a Bayesian estimation approach complements other studies on the lower temperature limits where plant growth may be sustained. Our results suggest that the VSL model skilfully simulates site level tree-ring series in response to climate forcing for a wide range of environmental conditions and species. Spatial aggregation of the tree-ring chronologies to reduce non-climatic noise at the site level yielded notable improvements in the coherence between modelled and actual growth. The resulting distinct and coherent patterns of significant relationships between the aggregated and simulated series further demonstrate the VSL model's ability to skilfully capture the climatic signal contained in tree-ring series. Finally, we propose that the VSL model can be used as an observation operator in data assimilation approaches to reconstruct past climate. STUDY NOTES: Breitenmoser et al. 2014 Re-standardized tree-ring chronologies for 2287 sites from the International Tree-ring Data Bank, reformatted to WDC-Paleo template format.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/breitenmoser2014/ Data Folder; Breitenmoser et al. 2014 Re-Standardized ITRDB Chronologies GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/breitenmoser2014/breitenmoser2014.zip Compressed ZIP Data File ; Breitenmoser et al. 2014 Re-Standardized ITRDB Chronologies USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11