noaa-model-36773 eng; USA utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact 2024-10-31 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Northern Hemisphere Observed and Simulated Tree Ring Width Data 1401-2000 CE 2022-08-29 publication doi:10.25921/8hpf-a451 noaa-model-36773 NCEI DSI 1200_02 NCEI DSI 1200_01 Franke, J. originator Franke, J. author Evans, M.N. originator Evans, M.N. author Schurer, A.P. originator Schurer, A.P. author Hegerl, G.C. originator Hegerl, G.C. author NOAA National Centers for Environmental Information publisher tableDigital This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Paleoclimatology Modeling. The data include parameters of model (Proxy System Model) with a geographic location of Global. The time period coverage is from 549 to -50 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data. Computer simulations of past climate. Variables provided as model output are described by parameter keyword. In some cases the parameter keywords are a subset of all archived model output, and additional output is available upon request. Additional summary information can be found in the abstracts of papers listed in the dataset citations. completed NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact https://www.ncei.noaa.gov/pub/data/paleo/webimages/pc-default-model.png Paleoclimatology - Modeling PNG Earth Science > Climate Indicators > Paleoclimate Indicators > Paleoclimate Reconstructions theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian earth science > paleoclimate > model > Proxy System Model theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Earth Surface Conditions Reconstruction theme Geographic Region > Global > Global > LATITUDE > LONGITUDE place DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian otherRestrictions Cite as: Franke, J.; Evans, M.N.; Schurer, A.P.; Hegerl, G.C. (2022-08-29): NOAA/WDS Paleoclimatology - Northern Hemisphere Observed and Simulated Tree Ring Width Data 1401-2000 CE. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/8hpf-a451. Accessed [date]. otherRestrictions Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. 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Climate Change Detection and Attribution using observed and simulated Tree-Ring Width 2022 publication Franke, Jörg, Michael Neil Evans, Andrew Schurer, and Gabriele Clarissa Hegerl author Climate of the Past publisher https://doi.org/10.5194/cp-18-2583-2022 HTTPS Web Browser Associated Reference published 2022 Franke, Jörg, Michael Neil Evans, Andrew Schurer, and Gabriele Clarissa Hegerl, 2022: Climate Change Detection and Attribution using observed and simulated Tree-Ring Width. Climate of the Past, 18, 2583-2597, 10.5194/cp-18-2583-2022 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: 1401 CE to 2000 CE; Date Range: 549 cal yr BP to -50 cal yr BP; -180 180 -90 90 1401 2000 STUDY NOTES: Results presented in Figs 2-7 of Franke et al (2022). fe23 netCDF, Matlab, and readme files added to study in October 2024 to include an additional variable, trwsSm, which is the climate interpretation. Provided Keywords: proxy system modeling, VS-Lite, tree-ring width, parameter estimation, climate-sensor simulation, detection and attribution, moisture, temperature, surface, annual resolution. files: fe22.nc (netcdf format, produced by Matlab R2020b update 4) fe22.mat (created in Matlab R2020b update 4) figure variable dimensions description ====== ======== ========== =========== 2 slon 1619x1 TRW site longitudes (east) 2 slat 1619x1 TRW site latitudes (north) 2 trwsS 1619x4 sitewise estimation of TRW climate sensitivity (T = temperature, M = moisture, C = complacent, N = neither) 3 long 64x1 longitude gridpoints 3 latg 32x1 latitude gridpoints 3 ntrwogTf 64x32 number of years for which gridded T-sensitive TRW observations are available (lon x lat) 3 ntrwogMf 64x32 number of years for which gridded M-sensitive TRW observations are available (lon x lat) 3 ntrwsgTf 64x32 number of years for which gridded T-sensitive TRW simulations are available (lon x lat) 3 ntrwsgMf 64x32 number of years for which gridded M-sensitive TRW simulations are available (lon x lat) 4 trwsgT_gT 4x64x32x600x12 simulated T-sensitive TRW, nondimensional temperature growth function (nens x nlon x nlat x nt x nm) 4 trwsgT_gM 4x64x32x600x12 simulated T-sensitive TRW, nondimensional moisture growth function (nens x nlon x nlat x nt x nm) 4 trwsgM_gT 4x64x32x600x12 simulated M-sensitive TRW, nondimensional temperature growth function (nens x nlon x nlat x nt x nm) 4 trwsgM_gM 4x64x32x600x12 simulated M-sensitive TRW, nondimensional moisture growth function (nens x nlon x nlat x nt x nm) 5 t 1x600 time (1401-2000 CE) (t) 5 moT 1x600 mean observed T sensitive TRW (t) 5 msT 1x600 mean observed M sensitive TRW (t) 5 noTt 1x600 # gridpoints, mean observed T sensitive TRW (t) 5 nsTt 1x600 # gridpoints, mean simulated T sensitive TRW (t) 5 moM 1x600 mean observed T sensitive TRW (t) 5 msM 1x600 mean observed M sensitive TRW (t) 5 noMt 1x600 # gridpoints, mean observed M sensitive TRW (t) 5 nsMt 1x600 # gridpoints, mean simulated M sensitive TRW (t) 5 tf 1x590 11y centered time (1461-1995 CE) (t) 5 moTf 1x590 mean 11y filt observed T sens TRW (t) 5 msTf 1x590 mean 11y filt observed T sens TRW (t) 5 moMf 1x590 mean 11y filt observed M sens TRW (t) 5 msMf 1x590 mean 11y filt observed M sens TRW (t) 6 crow 1x12 years for significant volcanic eruptions, from Crowley and Unterman (2013) (t) 6 sigl 1x12 years for significant volcanic eruptions, from Sigl et al (2015) (t) 6 lonlatg 2048x2 lon, lat gridpoint ordering for Fig 6 variables 6 trwogTdat1g 2048x600 grid ave T sensitive observed TRW (lonlatg x t) 6 trwogMdat1g 2048x600 grid ave M sensitive observed TRW (lonlatg x t) 6 trwsgTdat1g 2048x600 grid ave T sensitive simulated TRW (lonlatg x t) 6 trwsgMdat1g 2048x600 grid ave M sensitive simulated TRW (lonlatg x t) 7 f7dat 3x2x3 detection and attribution results (figure panel (1,2,3) x attribution (ALL,VOLC) x percentile estimates (5th, 50th, 95th) files: fe23.nc (netcdf format, produced by Matlab R2020b update 4) fe23.mat (created in Matlab R2020b update 4) Variables: trwo Size: 22x278x600 Dimensions: nregion,nseries,time Datatype: double Attributes: _FillValue = NaN LongName = '1401-2000 B14 TRW series values by region, series within region, and simulation time (1401-2000 CE)' trws Size: 4x22x278x600x200 Dimensions: nens,nregion,nseries,time,np Datatype: double Attributes: _FillValue = NaN LongName = '1401-2000 FE22 TRW simulation series values by HadCM3 ALL forcing ensemble member (1-4; Schurer et al 2013), B14 region, series within region, simulation time (1401-2000 CE), and validated parameter estimate (up to 200)' trwsSm Size: 22x278 Dimensions: nregion,nseries Datatype: double Attributes: _FillValue = NaN LongName = 'modal sensitivity of simulations by HadCM3 ALL forcing ensemble member across all ensemble members (1-4); Schurer et al 2013), B14 region, series within region: 1 = T sensitive, 2 = M sensitive, 3 = both T and M sensitive, 4 = neither T nor M sensitive; cf Franke et al (2022) Fig. 2' treetime Size: 1159x1 Dimensions: ttime Datatype: double Attributes: _FillValue = NaN LongName = 'observed timescale for chronos, 850-2008 CE.' chronos Size: 22x278x1159 Dimensions: nregion,nseries,ttime Datatype: double Attributes: _FillValue = NaN LongName = '850-2008 B14 TRW series values by region, series within region, and observation time (850-2008).' lonlat Size: 2x22x278 Dimensions: lonlat,nregion,nseries Datatype: double Attributes: _FillValue = NaN LongName = 'longitude and latitude of the B14 TRW series values by region and series within region' elevation Size: 22x278 Dimensions: nregion,nseries Datatype: double Attributes: _FillValue = NaN LongName = 'elevation of the B14 TRW series values by region and series within region' chronology Size: 22x278x32 Dimensions: nregion,nseries,nchars_chr Datatype: char Attributes: LongName = 'chronology names by region and series within region' country Size: 22x278x22 Dimensions: nregion,nseries,nchars_ctry Datatype: char Attributes: LongName = 'country names by region and series within region' investigator Size: 22x278x42 Dimensions: nregion,nseries,nchars_cinv Datatype: char Attributes: LongName = 'investigator names by region and series within region' species Size: 22x278x6 Dimensions: nregion,nseries,nchars_csp Datatype: char Attributes: LongName = 'species names by region and series within region' sitename Size: 22x278x51 Dimensions: nregion,nseries,nchars_cn Datatype: char Attributes: LongName = 'site names by region and series within region' ABSTRACT SUPPLIED BY ORIGINATOR: The detection and attribution (D&A) of paleoclimatic change to external radiative forcing relies on regression of statistical reconstructions on simulations. However, this procedure may be biased by assumptions of stationarity and univariate linear response of the underlying paleoclimatic observations. Here we perform a D&A study via regression of tree ring width (TRW) observations on TRW simulations which are forward modeled from climate simulations. Temperature and moisture-sensitive TRW simulations show distinct patterns in time and space. Temperature-sensitive TRW observations and simulations are significantly correlated for northern hemisphere averages, and their variation is attributed most closely to volcanically forced simulations. In decadally smoothed temporal fingerprints, we find the observed responses to be significantly larger and/or more persistent than the simulated responses. The pattern of simulated TRW of moisture-limited trees is consistent with the observed anomalies in the two years following major volcanic eruptions. We can for the first time attribute this spatiotemporal fingerprint in moisture limited tree-ring records to volcanic forcing. These results suggest that use of nonlinear and multivariate proxy system models in paleoclimatic detection and attribution studies may permit more realistic, spatially resolved and multivariate fingerprint detection studies, and evaluation of the climate sensitivity to external radiative forcing, than has previously been possible. NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information distributor In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. Native Format(s) https://doi.org/10.25921/8hpf-a451 HTTPS Landing Page Metadata Landing Page NCEI landing page with general information and links to access the data. information https://www.ncei.noaa.gov/access/paleo-search/study/36773 HTTPS Web Browser NOAA Study Page Study page with data access information. search https://www.ncei.noaa.gov/products/paleoclimatology/paleoclimatology-modeling HTTPS Information NCEI Paleoclimatology Modeling Page General information for this data type. information https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/franke2022/franke2022-trw.nc HTTPS Download /contributions_by_author/franke2022/franke2022-trw.nc Original Data and Full Metadata download https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/franke2022/franke2022-trw.mat HTTPS Download /contributions_by_author/franke2022/franke2022-trw.mat Original Data and Full Metadata download https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/franke2022/franke2022-trw-readme.txt HTTPS Download /contributions_by_author/franke2022/franke2022-trw-readme.txt Readme download https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/franke2022/franke2022-fe23.nc HTTPS Download /contributions_by_author/franke2022/franke2022-fe23.nc Original Data and Full Metadata download https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/franke2022/franke2022-fe23.mat HTTPS Download /contributions_by_author/franke2022/franke2022-fe23.mat Original Data and Full Metadata download https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/franke2022/franke2022-fe23-readme.txt HTTPS Download /contributions_by_author/franke2022/franke2022-fe23-readme.txt Readme download asNeeded This ISO metadata record was translated from DIF metadata using dif-9x-to-iso-19115-2.xsl Version: 2022-06-21