XRF, XRD, grainsize and total organic carbon in core Konar Sandal peat bog, SE Iran


Rapid North Atlantic cooling events during the last deglaciation caused atmospheric reorganizations on global and regional scales. Their impact on Asian climate has been investigated for monsoonal domains, but remains largely unknown in westerly wind-dominated semi-arid regions. Here we generate a dust record from southeastern Iran spanning the period 19-7 cal. ka BP. We find a direct link between frequent occurrences of dust plumes originating from the Arabian Peninsula and North Africa, and rapid southward shifts of the westerlies associated with changes of the winter stationary waves during Heinrich Stadial 1, the Younger Dryas, the Preboreal Oscillation and the 8.2 ka event. Dust input rises and falls abruptly at the transitions into and out of these cooling events, which we attribute to changes in the ocean circulation strength and modulated by the North Atlantic winter sea-ice cover. Our findings reveal that waxing and waning of North American ice sheets have a stronger influence than those of European ice sheets on the winter climate over West Asia.

DOI https://doi.org/10.1594/PANGAEA.918548
Related Identifier https://doi.org/10.1073/pnas.2004071117
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.918548
Creator Safaierad, Reza; Mohtadi, Mahyar; Zolitschka, Bernd; Yokoyama, Yusuke; Vogt, Christoph; Schefuß, Enno
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2020
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Language English
Resource Type Collection of Datasets; Collection
Format application/zip
Size 4 datasets
Discipline Earth System Research
Spatial Coverage (57.781 LON, 28.534 LAT)