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Never seen before a warming as the actual one
  • Alley, R.B.. 2004. GISP2 Ice Core Temperature and Accumulation Data. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series #2004-013. NOAA/NGDC Paleoclimatology Program, Boulder CO, USA
  • Box et al., 2009. Greenland Ice Sheet Surface Air Temperature Variability: 1840–2007, Journal of Climate, 22,14, 4029-4049, 2009. https://doi.org/10.1175/2009JCLI2816.1
  • https://rclutz.com/wp-content/uploads/2025/06/holocene-temperature-wrightstone.png (Ron Clutz's post)
  • Available (for IOS & Android) the free app: Inconvenient Facts (IF). The figure in R.Clutz 's post is the fact#18. IF homepage address is: https://inconvenientfacts.xyz/

  • https://wattsupwiththat.com/2025/06/26/its-hot-weather-but-not-man-made/ (source of USA Max-temp)
  • https://www.ncei.noaa.gov/access/monitoring/scec/records (numerical values of MAX temp & more)
    Plots
    fact#18(png)In Ron Clutz's post
    USA Max-temp(png)NOAA 2025Unknown source
    Alley 2000(pdf) (png)quoted as Alley, 2004
    Alley10(pdf) (png)
    ================================
    Data
    Alley 2000(txt)GISP2 Ice CoreGreenland

    Code
    alley2000.bon, alley10.bon,
    Page Written: June 23, 2025        Last Updated: