The first air travel mass we will look at is continental Polar ( cP ). With winter not excessively far away and with us starting to see more effects from this particular publicize multitude, I thought this would be a estimable one to start with .
Characterizations of a Continental Polar Air Mass
| Temperature | Moisture |
|---|---|
| Cold | Dry |
The main characterizations that describe an atmosphere mass are typically the temperature and the moisture content. For the continental polar air travel mass the temperature is cold and the moisture content ( dew points ) are very moo .
The atmospheric visibility is typically identical stable and limits the measure of cloud cover and precipitation experienced. Stability leads into our adjacent subject which is the weather experienced with continental diametric air out masses.
Development and Source of Air Mass
A continental polar breeze mass is created up in the high subpolar latitudes of the United States. This encompasses a lot of northerly Canada. If snow cover is present, parts of the northerly United States can contribute to the development of this vent mass .
Air Mass Source Regions
Snow shroud is KEY to developing these cold air masses. The cold bamboozle pack insulates the grind, and keeps the heat from the surface from being released. This allows the tune mass to get cold and cold and grow deeper and deeper. finally this bottled-up cold air is released south by the dip jet pour .
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early on in the winter season watch the Northern U.S. and canadian provinces close for snow depth of snowpack, and keep cut of the temperatures. They will most probably grow cold, specially with a fresh layer of coke. You will be witnessing the birth of a continental pivotal publicize mass .
What Type of Weather Can You Expect?
During the winter, you can expect not a lot in the way of obscure blanket or precipitation. The cold temperatures limit the measure of the moisture carried by the publicize aggregate. Moisture tax return during the winter is besides weaker, so as the air mass moves south it doesn ’ t have a lot moisture to work with to produce precipitation.
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During the transition months like spring or decrease, fall precipitation is possible on the out edges of the tune mass due to the presence of more moisture ahead of it. The precipitation typically will occur on the out edges of the air mass, because it is where the fronts are located. Most of the ski tow occurs due to the front .
Modification of the Air Mass
As the air mass pushed south it starts to change or modify some of its characteristics. The dew points ( moisture content ) stay about the same. The temperatures will start to increase lento due to several factors .
Those factors are warm land temperatures, a shallower publicize mass, higher sun angles, and a miss of coke brood.
After a particularly cold reach of weather the dirt moisture temperature is much lower. This allows the modification of the air mass to occur at a slower rate. As the air mass starts to warm, the depth of the air travel mass starts to thin out as the cold breeze is slowly eroded away .
In future episodes, we will dive into the 4 other types of air travel masses. Catch other episodes of Weather 101 HERE !
