Study Area: Southern Interlake and its shores of Lakes Manitoba/Winnipeg
Submitted by: J. Hanesiak
Although most research on lake and sea breezes has taken place outside of Canada, lake breeze fronts (LBF) are known to be important factors for initiation of convective storms and can be associated with tornadic events in Canada. An LBF existed in close proximity to the Elie, MB F5 tornadic storm with unknown effects, if any. Lake breeze circulations primarily result from differential heating between water bodies and the land surface that can result in onshore flow at the surface that generates the LBF. The extent to which the LBF penetrates inland depends on various factors including the temperature gradient between the land and water, the background (synoptic-scale) boundary layer flow, the shape of the coastline and characteristics of the land surface. LBFs have been known to penetrate quite far inland, from a few km to as far as hundreds of km.
There have been no detailed studies of lake breezes in Manitoba even though it is well known that LBFs appear on weather radar and can impact cloud and storm initiation in the region.
A pilot field project called ELBOW-MB (Effects of Lake Breezes On Weather – Manitoba) was conducted between July 5 – 26, 2013. The main objectives of ELBOW-MB are to:
Curry, M., 2012: Lake effects in southern Manitoba, Honours Thesis, University of Manitoba, pp. 65. [Available from the Department of Environment and Geography, University of Manitoba, 220 Sinnott Bldg. Fort Gary Campus, Winnipeg, Manitoba, Canada, R3T 2N2]
U Manitoba: Dr. John Hanesiak, Michelle Curry, Kyle Ziolkowski, Scott Kehler, Rose Sengenberger
Environment Canada: Dr. David Sills (Cloud Physics and Severe Weather Research Division), Neil Taylor (Hydrometeorology and Arctic Lab), Robyn Dyck and Shannon Bestland (Prairie and Arctic Storm Prediction Centre)
NSERC, CFI, University of Manitoba, Environment Canada, Rainy Day Internet, Town of Winnipeg Beach, RM of Gimli
For more information contact:
Michelle Curry launching a weather balloon at Balaton Beach, Manitoba during field project. Credit: David Sills