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What happens above a lake as the air becomes warmer?
Lake breezes develop when the land becomes warmer than the water. The warm air over land rises, and gets replaced by the relatively cool air which resides immediately above the lake surface.
What might happen when the air above the surface of the lake is colder than the water?
A thin layer of air above the pond is warmed by the pond water. Water evaporates from the pond’s surface into this thin layer. The thin, warm, moist layer of air over the pond then mixes with the cooler air from the land. As it cools, condensation occurs and a fog forms.
What happens to air above a warm surface?
As the heated air rises, it expands, which is measured at the surface as low air pressure. Expanding air cools, which forces it to lose its moisture as rain or snow. The opposite is true for sinking air.
Why is it warmer near a lake?
Because the Great Lakes act as a heat source during the winter, coastal air temperatures are more moderate than the air temperature in inland areas. Winter: There is less radiation from the sun, generally making temperatures cooler. That means the lakes are warmer than the air.
How fast do lakes cool down?
The lake would have to be deep enough & murky enough to have a cold bottom strata that would then mix into the top surface water strata. Such convection cooling can happen in a mateer of hours. Surface water heat dissapates slower though radiation or conduction so a drop to 70F or even 40F will not have a rapid effect.
Is water always colder than air?
It is normal for water temperature to be less than air temperature because evaporation takes heat from the water. With lower humidity in the air, evaporation is greater, increasing the temperature difference.
Why do lakes not freeze solid?
Most lakes and ponds don’t completely freeze because the ice (and eventually snow) on the surface acts to insulate the water below. Our winters aren’t long or cold enough to completely freeze most local water bodies. This process of lakes turning over is crtically important to the life in the lake.
Does living near water make it colder?
The specific heat of water is higher than any other common substance on Earth. In other words it takes a lot of energy to heat water. The specific heat of land is much lower than water. It varies a little by soil type, but it takes a lot less energy to raise the temperature of the same amount of land as water.
What causes air to move?
Air in the atmosphere moves around the world in a pattern called global atmospheric circulation. This pattern, called atmospheric circulation, is caused because the Sun heats the Earth more at the equator than at the poles. It’s also affected by the spin of the Earth. In the tropics, near the equator, warm air rises.
Do lakes affect weather?
The Great Lakes modify the local weather and climate. Because water temperatures change more slowly than land temperatures, lake waters gain heat in summer and release heat during cooler months. This results in cooler springs, warmer falls, delayed frosts and lake-effect snow.
Does rain cool lake water?
Rain may have a cooling effect on the lake surface by lowering the near-surface air temperature, by the direct rain heat flux into the lake, by mixing the lake surface layer through the flux of kinetic energy and by convective mixing of the lake surface layer.
Is it possible that water temperature ( lake ) can be higher?
In summer air is warmer than groundwater, whereas in winter air is colder than groundwater. Therefore, in such rivers water temperature is lower than air temperature in summer, and higher than air temperature in winter. Webb, B.W. & Zhang, Y. (1999).
Why does the atmosphere get warmer as altitude increases?
Now, because the atmosphere is cooling so quickly with increasing altitude, lifted parcels of both unsaturated and saturated air end up warmer and less dense than the surrounding air. Both the orange and green curve lie above and to the right of the purple curve on the graph. When released these parcels will continue to rise on their own.
What happens to the air over a pond as it cools?
As the air over the land cools, it will drift over the warmer pond. A thin layer of air above the pond is warmed by the pond water. Water evaporates from the pond’s surface into this thin layer. The thin, warm, moist layer of air over the pond then mixes with the cooler air from the land. As it cools, condensation occurs and a fog forms.
What happens to the temperature of air after it is lifted?
After being lifted, the air inside the parcel may have a different temperature than the surrounding air outside the parcel. This is because the inside the parcel is “insulated” from the surrounding air. In some ways this is like getting inside an automobile and driving up to the top of a mountain.