[natphil] Reminder of J.Tuzo Wilson Lecture on Feb 24th, 4:10-6pm

The J Tuzo Wilson Lecture mailing list wilsonlecture at listserv.physics.utoronto.ca
Tue Feb 23 10:36:52 EST 2021


Dear All,

You are invited to join the 2020-2021 J. Tuzo Wilson lecture on Feb 
24th, 4:10 -6 pm by Dr. Ron Kwok:
Title: Arctic sea ice thickness: From submarine sonars to satellite 
photon-counting altimeters
Speaker: Dr. Ron Kwok (University of Washington)
Date/Time: Wed, Feb 24, 2021 Time: 4:10-6:00pm

  Zoom link: 
https://zoom.us/j/98984389560?pwd=TmFqS2ZUQXhoZ3h1dXgxL25LRisrQT09

(webinar ID: 989 8438 9560)

Abstract:

Alongside the widely reported decline in Arctic ice extent, there have 
also been dramatic losses in sea ice thickness and volume. Instead of a 
relatively consistent record of sea ice coverage from satellite passive 
microwave radiometers since the late seventies, assessments of 
large-scale decadal changes in sea ice thickness and volume have 
depended on measurements from a variety of sources: submarine and 
airborne surveys, and mapping with satellite altimetry. Even though 
there is sometimes sparse sampling (in space and time), lack of 
consistency in measurement approaches and continuity in individual 
records, these combined thickness datasets broadly depict an ice cover 
that has thinned everywhere. Why are sea ice thickness measurements so 
difficult to obtain? In my talk, I will provide a brief description of 
the nature of the ice cover, a short history of how we have constructed 
a record of sea ice thickness of the Arctic Ocean, current technologies 
for observing the ice thickness, and the changes in thickness and volume 
over the last half century.

For more information, please check out the event webpage:

https://tuzowilson.physics.utoronto.ca/

  John Tuzo Wilson was a member of the Department of Physics at 
University of Toronto, and is probably Canada's most illustrious 
geoscientist. The J. Tuzo Wilson public Lecture is a well-established 
annual event sponsored by the department of Physics, University of 
Toronto, since 1996 which draws people from a broad spectrum of 
Toronto's vibrant intellectual community. Past Wilson lectures are 
listed here:

https://tuzowilson.physics.utoronto.ca/j-tuzo-wilson-lecture-series/


Thank you,

Crystal

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