# Northern Hemisphere Observed and Simulated Tree Ring Width Data 1401-2000 CE #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # Template Version 4.0 # Encoding: UTF-8 # NOTE: Please cite original publication, NOAA Landing Page URL, dataset and publication DOIs (where available), and date accessed when using downloaded data. # If there is no publication information, please cite investigator, study title, NOAA Landing Page URL, and date accessed. # # Description/Documentation lines begin with '#' followed by a space # Data lines have no '#' # # NOAA_Landing_Page: https://www.ncei.noaa.gov/access/paleo-search/study/36773 # Landing_Page_Description: NOAA Landing Page of this file's parent study, which includes all study metadata. # # Study_Level_JSON_Metadata: https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/json/noaa-model-36773.json # Study_Level_JSON_Description: JSON metadata of this data file's parent study, which includes all study metadata. # # Data_Type: Paleoclimatic Modeling # # Dataset_DOI: 10.25921/8hpf-a451 # # Science_Keywords: Earth Surface Conditions #--------------------------------------- # Resource_Links # # Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/franke2022/franke2022-trw-readme.txt # Data_Download_Description: NOAA Template File; Study Description File # # Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/franke2022/franke2022-trw.nc # Data_Download_Description: netCDF File; All Tree Ring Width Data # # Supplemental_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/franke2022/franke2022-trw.mat # Supplemental_Description: Matlab Workspace File; Supplementary File - All Tree Ring Width Data # #--------------------------------------- # Contribution_Date # Date: 2022-08-29 #--------------------------------------- # File_Last_Modified_Date # Date: 2023-03-24 #--------------------------------------- # Title # Study_Name: Northern Hemisphere Observed and Simulated Tree Ring Width Data 1401-2000 CE #--------------------------------------- # Investigators # Investigators: Franke, Jörg; Evans, Michael N.; Schurer, Andrew P.; Hegerl, Gabrielle C. #--------------------------------------- # Description_Notes_and_Keywords # Description: Results presented in Figs 2-7 of Franke et al (2022) # Provided Keywords: proxy system modeling, VS-Lite, tree-ring width, parameter estimation, climate-sensor simulation, detection and attribution, moisture, temperature, surface # 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) #--------------------------------------- # Publication # Authors: Franke, Jörg, Michael Neil Evans, Andrew Schurer, and Gabriele Clarissa Hegerl # Published_Date_or_Year: 2022-12-14 # Published_Title: Climate Change Detection and Attribution using observed and simulated Tree-Ring Width # Journal_Name: Climate of the Past # Volume: 18 # Edition: # Issue: # Pages: 2583-2597 # Report_Number: # DOI: 10.5194/cp-18-2583-2022 # Online_Resource: https://cp.copernicus.org/articles/18/2583/2022/cp-18-2583-2022.html # Full_Citation: # Abstract: 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. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: # Grant: #--------------------------------------- # Site_Information # Site_Name: Global # Location: Global # Northernmost_Latitude: 90 # Southernmost_Latitude: -90 # Easternmost_Longitude: 180 # Westernmost_Longitude: -180 # Elevation_m: #--------------------------------------- # Data_Collection # Collection_Name: PSM TreeRings Franke2022 # First_Year: 1401 # Last_Year: 2000 # Time_Unit: year Common Era # Core_Length_m: # Parameter_Keywords: proxy system model # Notes: No new data collection in this submission; new data averaging and data simulations using existing tree-ring width observations, existing climate simulations, and new tree ring width modeling. #--------------------------------------- # Chronology_Information # Chronology: #--------------------------------------- # Variables # PaST_Thesaurus_Download_Resource: https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf # PaST_Thesaurus_Download_Description: Paleoenvironmental Standard Terms (PaST) Thesaurus terms, definitions, and relationships in SKOS format. # # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-var components: what, material, error, units, seasonality, data type, detail, method, C or N for Character or Numeric data) # #------------------------ # Data: # To access data, use Data_Download_Resource links above.