10.1594/PANGAEA.957148Czymzik, MarkusMarkusCzymzik0000-0003-1599-7643Tjallingii, RikRikTjallingii0000-0002-9723-3622Plessen, BirgitBirgitPlessen0000-0003-4807-6357Feldens, PeterPeterFeldens0000-0002-9620-8927Theuerkauf, MartinMartinTheuerkauf0000-0002-4033-3040Moros, MatthiasMatthiasMorosSchwab, Markus JMarkus JSchwab0000-0003-1794-481XNantke, CarlaCarlaNantkePinkerneil, SilviaSilviaPinkerneilBrauer, AchimAchimBrauer0000-0002-6655-9451Arz, Helge WolfgangHelge WolfgangArz0000-0002-1997-1718PANGAEA2023Lake KälksjönNAOSedimentsSwedenTotal organic carbon (TOC)DEPTH, sediment/rockAGECarbon, organic, totalCoreElement analyser (EA)Dataset10.5194/cp-19-233-2023583 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalA total organic carbon (TOC) record covering the last 9600 years was measured from freeze-dried and homogenized samples of Lake Kälksjön (central Sweden) sediment core KKJ19 at 1 cm resolution using an EA Isolink elemental analyzer coupled to a DELTA V advantage isotope ratio mass spectrometer. Sediment core KKJ19 was retrieved from the deepest part of Lake Kälksjön in summer 2019 with a Niederreiter piston corer. TOC measurements were performed in August 2021. Main aim of the measurements was the establishment of a time-series of paleoenvironmental variability for the western Baltic region. The TOC data represent measured contents.13.0360.09Lake Kälksjön, Sweden