Temperature, precipitation, and vegetation changes in the Eastern Mediterranean over the last deglaciation and Dansgaard-Oeschger events

We here estimate past temperature and hydroclimate variations in eastern Anatolia for marine isotope stages 4 to 1 (MIS4 MIS1) respectively using branched glycerol dialkyl tetraethers (brGDGTs) the hydrogen isotopic composition of n-C29 leaf-wax n-alkanes (?2Hwax) stored sedimentary record Lake Van (Turkey). Our millennial-scale lipid biomarker records reflect warm wet conditions during interstadials/interglacials colder dryer periods with increased evapotranspiration aridity stadials/glacials. The degree methylation 5-methyl brGDGTs (MBT´5me) indicates increasing mean annual air temperatures (MAT) stadial/interstadial transitions, that characterize Dansgaard-Oeschger events, last glacial termination. Based on effects changes precipitation amount apparent enrichment factors between ?2H C29 precipitation, a total increase about 200 mm transitions from stadials interstadials, 300–350 glacial-interglacial can be determined, line previous paleoclimate reconstructions Eastern Mediterranean. High sterol concentrations sediments deposited humid interstadials increases lake level, vegetation density algal blooms, whereas lower values versus isoprenoid ratio (BIT) likely reflects niche Thaumarchaeota resulting enhanced windiness mixing water column periods. This quantitative reconstruction (Turkey), as it is optimally situated respond North Atlantic climate change via large-scale wind fields shed light into global variability.