Installation: Download CalPal_A_Install.exe and unzip to a directory of your choice (e.g. ‘c:\test1’). The installation then runs via double click on ‘Setup_Calpal.exe’. General Description: CalPal supports the cultural and palaeoclimatological analysis of chronological data from 'mixed' dating methods/sources. The analysis allows both automated inter-method (e.g. 14C, Dendro, Historical, OSL, TL), as well as automated intra-source switching (14C: N-S Hemisphere, Marine & Reservoir Corrections) of the input ages. The necessary (quality-control) test-results of such multi-method applications (termed: Calibration Curve Switching: CCS) for the different CalPal-dialogs are provided in the file 'CalPal CCS Interdialog Comparisons.pdf'. Numeric calibration curve comparisons are provided in the file named 'CalCurveComparisons_2020.pdf'. These comparisons range from IntCal04 through Fairbanks 2005, CalPal-Hulu-2007, IntCal09; IntCal13, up to IntCal20. The CalPal Database (Excel) now contains a total of 203239 dates (for 11 ‘Continents=Excel Spreadsheets)’. The main amendments in CalPal Edition 2026.05: - Modified dialog “Reservoir Explorer” for construction of Archaeological Chronologies and for automated Calibration Curve Construction. - Modified dialogs “Correspondence Analysis & Pottery Series”, with added CA-projects. - Extended Climate Library. N=600 records - Extended Project Libraries.

Programming language is Fortran 95. Operating system is Win10/11. CalPal has a standard Graphic User Interface (GUI) that makes extensive use of the Winteracter Fortran-language toolset which also supports 14C-database Excel Import/Export and chronological screen measurements. The IMSL-Libraries are used for mathematical and statistical data processing. Author: Bernie Weninger (University Cologne) - CalPal software download (zipped exe; 365 MB, expands to 561 MB). - History of CalPal 1986-2026 Edition 2026_05 (pdf; 1.18 MB) - CalPal installation guide edition 2024_6 (pdf; 90 kB ) CalCurveComparisons_2020 (pdf; 1.1 MB)