GLIN==> WEBINAR SIGN-UP for the CILER-GLERL Seminar Series presentation on "Ice-lake models for Lake Erie: Sensitivity study of ice-water processes"

Join us TOMORROW at 10:30AM in Lake Superior Hall at the Great Lakes 
Environmental Research Lab in Ann Arbor to hear:

Dr. Ayumi Fujisaki, Research Fellow
Cooperative Institute for Limnology and Ecosystems Research
School of Natural Resources and Environment
University of Michigan

Dr. fujisaki will speak about recent Lake Erie hydrodynamic-ice process 
modeling work she has collaborated on with Dr. Jia Wang, a Principal 
Investigator at the Great Lakes Environmental Research Lab in Ann Arbor.

*NOTE:  Information to join a webinar of this event is below this 
announcement.*





	
Ice-Lake Models for Lake Erie: Sensitivity Study of Ice-Water Processes

Join us for a Webinar on April 19

<https://www2.gotomeeting.com/register/892385443>

*Space is limited.*
Reserve your Webinar seat now at:
https://www2.gotomeeting.com/register/892385443

Ice cover is an inevitable physical process in Lake Erie that might 
significantly affect the regional weather and climate, its circulation, 
and ecosystem. High-resolution coupled ice-ocean models are useful to 
assess such impacts. For future long-term simulations, a parallelized 
ice-ocean model is preferable.
In this study, a parallel hydrodynamic model coupled with ice processes 
is configured for Lake Erie with 2km grids. The hindcastfrom April 
2003-December 2004 using hourly atmospheric forcing is evaluated based 
on the satellite-derived observations, in-situ measurements, and the 
previous model by Wang et al. (2010). The model reproduces a seasonal 
variation of ice cover, water circulation, and thermalstructure of the 
lake.
A series of numerical experiments have been conducted. 1.) Basal melting 
of ice significantly cools the surface water. Once such surface water is 
exposed to the winter air, it is immediately super-cooled, resulting in 
a more extensive ice area. 2.) The two formulae for the shortwave 
radiation "for lake" and "for ocean" were tested. The "for ocean" 
over-warms the water column during the non-ice season compared with the 
thermisterobservation. 3.) Ice cover significantly dampens the water 
circulation below it because the congested ice cover due to the internal 
ice stress slows down the surface water.
The validity demonstrated in this study allows further modelstudies of 
the ice-water processes of the lake as well as possible modeling work of 
the entire Great Lakes.

*Title:* 	Ice-Lake Models for Lake Erie: Sensitivity Study of Ice-Water 
Processes
*Date:* 	Tuesday, April 19, 2011
*Time:* 	10:30 AM - 11:30 AM EDT

After registering you will receive a confirmation email containing 
information about joining the Webinar.

*System Requirements*
PC-based attendees
Required: Windows® 7, Vista, XP or 2003 Server

Macintosh®-based attendees
Required: Mac OS® X 10.4.11 (Tiger®) or newer

	




-- 
Sander Robinson
Administrative Coordinator and Research Lab Specialist
Cooperative Institute for Limnology and Ecosystems Research (CILER)
4840 S. State Rd.
Ann Arbor, MI  48108
(734)741-2172
Alternate E-mail:  sanderdr at umich.edu

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