- What does lake effect snow mean?
- How does water get into the Great Lakes?
- How much water evaporates from Lake Erie each year?
- Does lake effect snow stop when lake is frozen?
- How much water evaporates from Lake Michigan each day?
- How do you calculate evaporation from a lake?
- Does lake water evaporate?
- How big does a lake have to be for lake effect snow?
- How much water evaporates in a day?
- Why does more evaporation from Lake Michigan happen in the winter?
- Why is Lake effect snow so bad?
What does lake effect snow mean?
Lake Effect snow occurs when cold air, often originating from Canada, moves across the open waters of the Great Lakes.
As the cold air passes over the unfrozen and relatively warm waters of the Great Lakes, warmth and moisture are transferred into the lowest portion of the atmosphere..
How does water get into the Great Lakes?
The source of water levels in the lakes is tied to what was left by melting glaciers when the lakes took their present form. Annually, only about 1% is “new” water originating from rivers, precipitation, and groundwater springs that drain into the lakes.
How much water evaporates from Lake Erie each year?
The evaporation rates varied from -9 to 25 cm/month with periods of low, median, and high annual evaporation averaging approximately 80, 90 and 100 cm.
Does lake effect snow stop when lake is frozen?
Luckily for people living near large lakes, lake-effect snow generally slows down around February. That’s when the lakes freeze over, making it impossible for the air to steal moisture away from the lake.
How much water evaporates from Lake Michigan each day?
The same Lake Michigan. Withdrawals from land-based water supplies also appear puny at a daily rate of 100,000 gallons. This is slightly greater than one gallon per second.
How do you calculate evaporation from a lake?
The Penman formula for the evaporation rate from a lake is simplified to the following: E 0 = 700 T m / ( 100 − A ) + 15 ( T − T d ) ( 80 − T ) ( mm day − 1 ) where Tm = T + 0.006h, h is the elevation (metres), T is the mean temperature, A is the latitude (degrees) and Td is the mean dew-point.
Does lake water evaporate?
Evaporation is the process by which water changes from a liquid to a gas or vapor. … Studies have shown that the oceans, seas, lakes, and rivers provide nearly 90 percent of the moisture in the atmosphere via evaporation, with the remaining 10 percent being contributed by plant transpiration.
How big does a lake have to be for lake effect snow?
100 km wideTo grow a snowstorm, you need moisture, lift, and below-freezing temperatures. But for lake effect snow to occur, these special conditions are also required: A lake or bay of 100 km wide, or larger. (The longer the lake, the greater the distance the air must travel over it, and the greater the convection.)
How much water evaporates in a day?
It may not be a true leak but simple evaporation. Our experience shows that a pool with no heater and no waterfalls or water features can lose as much as a quarter inch per day, averaged over several days. That’s more than one and a half inches in a week.
Why does more evaporation from Lake Michigan happen in the winter?
The highest evaporation rates on the Great Lakes typically occur in late fall and early winter, when conditions are much colder (Figure 1). This is because evaporation is not directly driven by warm air temperatures, but instead by warm water temperatures (Lenters, 2004).
Why is Lake effect snow so bad?
The effect is enhanced when the moving air mass is uplifted by the orographic influence of higher elevations on the downwind shores. This uplifting can produce narrow but very intense bands of precipitation, which deposit at a rate of many inches of snow each hour, often resulting in a large amount of total snowfall.