10.1594/PANGAEA.989981d'Oliveira, LéaLéad'Oliveira0009-0001-9845-8102Université de MontpellierMaignan, AdrienAdrienMaignanUniversité Paris-SaclayPeyron, OdileOdilePeyronUniversité de MontpellierJoannin, SébastienSébastienJoannin0000-0001-8345-9252Université de MontpellierCombourieu-Nebout, NathalieNathalieCombourieu-Nebout0000-0002-3604-5986Musée National d'Histoire NaturelleGenet, MarionMarionGenetGeo-OceanLestienne, MarionMarionLestienneAix-Marseille UniversityUniversité de MontpellierDugerdil, LucasLucasDugerdil0000-0003-0266-564XUniversité de MontpellierÉcole Normale Supérieure de LyonFernandez, GiadaGiadaFernandezRimska Univerza La SapienzaGiaccio, BiagioBiagioGiaccio0000-0002-7007-9127Instituto di Geologia Ambientale e GeoingeneriaMonaco, LorenzoLorenzoMonaco0000-0002-6555-0842Instituto di Geologia Ambientale e GeoingeneriaUniversità deali Studi di SienaNomade, SébastienSébastienNomadeUniversité Paris-SaclayPereira, AlisonAlisonPereiraUniversité Paris-SaclayScao, VincentVincentScaoUniversité Paris-SaclayRegnier, EdouardEdouardRegnierUniversité Paris-SaclayBalasse, MarieMarieBalasseMusée National d'Histoire NaturelleMénot, GuillemetteGuillemetteMénot0000-0003-2423-8294Université Claude Bernard Lyon 1, UMR 5125 PEPS - CNRSPANGAEA2026brGDGTsHoloceneItalyPaleoclimate reconstructionsPollenSample IDDEPTH, sediment/rockCalendar ageBranched glycerol dialkyl glycerol tetraether5-methyl branched glycerol dialkyl glycerol tetraether, IIIa, relative abundance6-methyl branched glycerol dialkyl glycerol tetraether, IIIa, relative abundance7-methyl branched glycerol dialkyl glycerol tetraether, IIIa, relative abundance5-methyl branched glycerol dialkyl glycerol tetraether, IIIb, relative abundance6-methyl branched glycerol dialkyl glycerol tetraether, IIIb, relative abundance7-methyl branched glycerol dialkyl glycerol tetraether, IIIb, relative abundance5-methyl branched glycerol dialkyl glycerol tetraether, IIIc, relative abundance5-methyl branched glycerol dialkyl glycerol tetraether, IIa, relative abundance6-methyl branched glycerol dialkyl glycerol tetraether, IIa, relative abundance7-methyl branched glycerol dialkyl glycerol tetraether, IIa, relative abundance5-methyl branched glycerol dialkyl glycerol tetraether, IIb, relative abundance6-methyl branched glycerol dialkyl glycerol tetraether, IIb, relative abundance7-methyl branched glycerol dialkyl glycerol tetraether, IIb, relative abundance5-methyl branched glycerol dialkyl glycerol tetraether, IIc, relative abundance6-methyl branched glycerol dialkyl glycerol tetraether, IIc, relative abundance7-methyl branched glycerol dialkyl glycerol tetraether, IIc, relative abundance5-methyl branched glycerol dialkyl glycerol tetraether, Ia, relative abundance5-methyl branched glycerol dialkyl glycerol tetraether, Ib, relative abundance5-methyl branched glycerol dialkyl glycerol tetraether, Ic, relative abundanceMethylation index of 5-methyl branched tetraethersCyclization ratio of branched tetraethers primeIsomer ratio of 6-methyl branched glycerol dialkyl glycerol tetraethersIsoprenoid acyclic glycerol dialkyl glycerol tetraether/Crenarchaeol ratioTemperature, air, annual meanTemperature, air, mean of months, above freezingpHDrilling/coringAge, tephra-chronostratigraphyHigh Performance Liquid Chromatography - Mass spectrometry (HPLC-MS)Calculated according to De Jonge et al. (2014a)Calculated according to De Jonge et al. (2014b)Calculated according to Blaga et al. (2009)Calculated according to Bauersachs et al. (2024)Calculated according to Raberg et al. (2021)Calculated according to Martínez-Sosa and Tierney (2019)Calculated according to Russel et al. (2018)2023-05-31T10:47:00Dataset10.1016/j.scitotenv.2023.16772410.1007/s10933-008-9242-210.1016/j.gca.2014.06.01310.1016/j.gca.2013.10.03110.1016/j.orggeochem.2015.12.00610.1016/j.orggeochem.2018.10.01110.5194/bg-18-3579-202110.1016/j.orggeochem.2017.12.0033317 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalThis dataset contains the concentration and relative abundance of branched glycerol dialkyl glycerol tetraethers (brGDGTs) components, along with Methylation of Branched Tetraethers (MBT'5Me), Cyclisation of Branched Tetraethers (CBT'), isomer ratio of 6-methyl branched glycerol dialkyl glycerol tetraethers (IR6Me) and Isoprenoid acyclic glycerol dialkyl glycerol tetraether/Crenarchaeol ratio (isoGDGT-0/Cren), for the sedimentary record of Lago Grande di Monticchio (Italy) covering the last 12,900 years. The analysis was performed by a double microwave extraction at 70°C with dichloromethane (DCM)-methanol (MeOH) mixture (3:1, v/v), filtered on a solid-phase extraction (SPE) cartridge and then separated into polar and apolar fractions on a silica column with a hexane-DCM (1:1, v/v) and DMC-MeOH (1:1, v/v) mixtures, respectively. Samples were then analysed by high-performance liquid chromatography with mass spectrometry (HPLC-MS) in hexane-propanol (98.2:0.2, v/v). Ions in selected ion monitoring (SIM) are detected for mass-to-change ratios according to Hopmans et al. (2016, doi: 10.1016/j.orggeochem.2015.12.006). The data table also contains the quantitative climate reconstructions inferred from brGDGTs (mean annual temperature and mean temperature of months above freezing) from four different calibrations (linear and multiple regression and Bayesian calibration; Martínez-Sosa and Tierney, 2019; Raberg et al. 2021; De Jonge et al. 2014; Bauersachs et al. 2024), and the pH reconstruction based on the calibration of Russel et al. (2018).15.60569940.9296Lago Grande di Monticchio, ItalyCentre National de la Recherche Scientifiquehttps://doi.org/10.13039/501100004794INSU, LEFE-IMAGO (2022-2024)Inter-Calibration 40Ar/39Ar et Radiocarbone en Europe entre 10 000 et 40 000 ans BPFrench National Research Agencyhttps://doi.org/10.13039/501100001665ANR-22-CE27-0011AUTUMN-LAMBSMinistero dell'università e della ricercahttps://ror.org/0341vw4082022MS9KWRCOMET