BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:North-West Saharan Holocene rainfall driven by interhemispheric te
 mperature differences (with climatic and archaeological considerations) - 
 Chris Day\, University of Oxford
DTSTART:20230222T173000Z
DTEND:20230222T190000Z
UID:TALK194587@talks.cam.ac.uk
CONTACT:Jinheum Park
DESCRIPTION:There is abundant evidence of wetter conditions in the Sahara 
 during the early- to mid-Holocene\, but a paucity of high-resolution spati
 al and temporal rainfall reconstructions\, which has impeded the robust un
 derstanding of climate and archaeology. North of 28oN there is a particula
 r lack of rainfall records\, which limits testing of the processes control
 ling climate change in the sub-tropics. I will be sharing the results (fro
 m students in my group) of stalagmite records from inland\, north-west Sah
 ara – south of the Atlas Mountains - which demonstrate peak increased ra
 infall between 8.7-4.3 kyr BP. The location\, timing\, and oxygen isotopes
  of this stalagmite growth\, when compared to other records\, demonstrate 
 that subtropical rainfall continues after the decline of the West African 
 Monsoon. We propose that this rainfall is driven by an increased North-Sou
 th interhemispheric temperature anomaly\, shifting the ITCZ northwards and
  increasing tropical-plume rainfall in the South of Atlas region. This rai
 nfall supported a significant increase in the region’s population during
  the Neolithic. Improved habitability and increased recharge to rivers flo
 wing south through the Sahara will have facilitated connections\, during a
  key period in the development of land use and animal production.
LOCATION:Large Lecture Theatre\, Department of Geography\, Downing Site
END:VEVENT
END:VCALENDAR