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SUMMARY:Interactions between stratospheric ozone and climate change in the
  Arctic - Dr Jiankai Zhang (Lanzhou University and Academic Visitor at  De
 partment of Chemistry\, University of Cambridge)
DTSTART:20190228T143000Z
DTEND:20190228T153000Z
UID:TALK120655@talks.cam.ac.uk
CONTACT:Dr Gillian Young
DESCRIPTION:In this talk\, I will describe my work on interactions between
  stratospheric ozone and climate change. I will discuss a ‘Eurasia-North
  America dipole’ (ENAD) mode in the total column ozone (TCO) over the No
 rthern Hemisphere in winter\, which shows negative and positive TCO anomal
 y centres over Eurasia and North America\, respectively. The positive tren
 d of this mode explains an enhanced TCO decline over the Eurasian continen
 t in the past three decades. It is closely related to the Arctic stratosph
 eric polar vortex shift towards Eurasia since 1980\, which is partly cause
 d by the Arctic sea ice loss. I will discuss how Arctic stratospheric ozon
 e depletion could exert a feedback impact on \nthe Arctic sea ice loss thr
 ough changing atmospheric radiative and dynamical processes.
LOCATION:British Antarctic Survey\, Seminar Room 2
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