[Aqualist] Seminar Tomorrow 3:10 ADL time - Georgy Falster (w. Zoom option)

[John Tibby]

Dear AQUA folk,
Please see below for what promises to be a great seminar.
John.


Dear colleagues,

Dr. Georgy Falster (Washington University in St. Louis) will be speaking tomorrow, Friday the 19th of March, at 3:10pm Adelaide time (3:40 pm Sydney/Melbourne time) in the scope of the University of Adelaide’s Earth Science Seminar Series about global precipitation δ18O and the Pacific Walker Circulation. For those local, Georgy will be presenting in the Mawson Lecture Theatre (Mawson Building). There will be a short presentation by one of our PhD students between 3pm and 3:10pm.

Her talk will also be available on zoom:

 https://adelaide.zoom.us/j/81528839635?pwd=NkxhM3kxZjlpcTZSdVJMYURxN0FVZz09

Passcode:  876110


Cheers

Alex F.

Title: Imprint of the Pacific Walker circulation in global precipitation δ18O

Speaker: Dr. Georgina Falster, Washington University in St. Louis

Abstract:
Anthropogenically-driven climate change has repercussions beyond global warming. One of the most impactful changes is to the global water cycle, but future changes to regional precipitation patterns across the continents are not well understood. The Pacific Walker circulation (PWC) affects weather and climate far beyond the Pacific Ocean, so it is likely that variability in the intensity of the PWC plays a role in global-scale precipitation patterns. But this has not previously been assessed, because most traditional metrics for the global water cycle do not capture geographic variability in regional circulation. In the study that I will describe in this seminar, my colleagues and I used the stable oxygen isotopic composition of precipitation (δ18OP) as a novel global water cycle tracer, and found a strong PWC imprint in global δ18OP patterns. This suggests that changes in PWC affect global precipitation patterns, and hence that uncertainty in the future state of the PWC translates to uncertainty in future variability in the global water cycle.

[A person smiling outside    Description automatically generated with low confidence]


Dr. Alex Francke
Research Associate
Department of Earth Science
University of Adelaide

Phone: +61 831 30894
alexander.francke at adelaide.edu.au<mailto:alexander.francke at adelaide.edu.au>




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