{"refrec":{"BRefID":368758,"RR":"<b>Senel, C.B.; Kaskes, P.; Temel, O.; Vellekoop, J.; Goderis, S.; DePalma, R.; Prins, M.A.; Claeys, P.; Karatekin, Ö.</b> (2023). Chicxulub impact winter sustained by fine silicate dust. <i>Nature Geoscience 16(11)</i>: 1033-1040. <a href=\"https://dx.doi.org/10.1038/s41561-023-01290-4\" target=\"_blank\">https://dx.doi.org/10.1038/s41561-023-01290-4</a>","BEntID":366484,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Nature Geoscience 16(11)</i>: 1033-1040. <a href=\"https://dx.doi.org/10.1038/s41561-023-01290-4\" target=\"_blank\">https://dx.doi.org/10.1038/s41561-023-01290-4</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Senel, C.B.; Kaskes, P.; Temel, O.; Vellekoop, J.; Goderis, S.; DePalma, R.; Prins, M.A.; Claeys, P.; Karatekin, Ö.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Senel, C.B. <i>et al.</i>","Englishabstract":"The Chicxulub impact is thought to have triggered a global winter at the Cretaceous-Palaeogene (K-Pg) boundary 66 million years ago. Yet the climatic consequences of the various debris injected into the atmosphere following the Chicxulub impact remain unclear, and the exact killing mechanisms of the K-Pg mass extinction remain poorly constrained. Here we present palaeoclimate simulations based on sedimentological constraints from an expanded terrestrial K-Pg boundary deposit in North Dakota, United States, to evaluate the relative and combined effects of impact-generated silicate dust and sulfur, as well as soot from wildfires, on the post-impact climate. The measured volumetric size distribution of silicate dust suggests a larger contribution of fine dust (~0.8–8.0 μm) than previously appreciated. Our simulations of the atmospheric injection of such a plume of micrometre-sized silicate dust suggest a long atmospheric lifetime of 15yr, contributing to a global-average surface temperature falling by as much as 15°C. Simulated changes in photosynthetic active solar radiation support a dust-induced photosynthetic shut-down for almost 2 yr post-impact. We suggest that, together with additional cooling contributions from soot and sulfur, this is consistent with the catastrophic collapse of primary productivity in the aftermath of the Chicxulub impact.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Chicxulub impact winter sustained by fine silicate dust","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2023,"MonPub":null,"DateUpdate":"2023-11-13","DateCreate":"2023-11-13","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:001099542500002","VABBcode":null,"OpenAcc":0,"DOI":"10.1038/s41561-023-01290-4"},"refs":null,"anarec":{"AnaID":368758,"PubliDate":2023,"Pagination":"1033-1040","XtraPublOfAnaID":null,"ISBN":null,"Volume":"16","Issue":"11","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":123796,"SerRR":"Nature Geoscience. Nature Publishing Group: London.  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