* Cold front- the boundary where a mass of cold air displaces a mass of warmer air.…
exposed, allowing molecules to escape and form water vapor; this vapor can then rise up and…
thunderstorm forms, called supercell. They can cause the most violent tornadoes, large hail, frequent lightning, heavy rain, strong winds. Rotates as a Mesocyclone, and can spawn tornadoes…
cP would originate over the ice and snow covered regions of the Arctic, northern Canada and Alaska. In my region this type of front would bring cold weather and frigid temperatures.…
Much of the weather that the British Isles are subjected to is brought along by one of the five major air masses which affect the islands from five main source areas. The air masses can be split into two categories: maritime and continental. The three maritime air masses – tropical, polar and arctic – and their influences tend to dominate British weather. The most frequent of all the air masses affecting the Isles is the Polar Maritime (PM) air mass, which is thought to account for 25% of weather experienced in the UK. The air starts off very cold and dry in its source area of Northern Canada and Greenland, but as it tracks west across the relatively warm waters of the North Atlantic Ocean, it warms from below and picks up moisture, becoming unstable. These wet, unstable characteristics bring cumulus clouds and showers throughout the year, particularly along the west coast of Britain, where the air mass first hits. The cooling effect of the sea brings below average temperatures of just 16⁰C in the summer, and conversely, the warming effect brings highs of around 8⁰C in the winter. The arctic maritime air mass is very similar to the PM; however, due to its shorter track over the sea, it brings much colder conditions, often responsible for winter snowfall, especially in…
Severe thunderstorms are aided in their development by: random turbulent eddies that lift small pockets of air, unequal surface heating, uplift provided by features of the terrain (such as along mountain barriers, small hills, and gentle rises), diverging upper-level winds interacting with converging surface winds and rising air, and warm air rising along a frontal zone.…
P.1:1. Swirling in complex patterns, air moves constantly across Earth’s surface. Wind, which is the horizontal movement of air, helps to moderate surface temperatures, distribute moisture, and generally cleanse the atmosphere.…
A. Tornadoes occur when thunderstorms develop in warm, moist air in advance of eastward-moving cold fronts. These thunderstorms often produce large hail, strong winds, and tornadoes.…
Condensation- is water which collects as droplets on a cold surface when humid air is in contact with it.…
As water vapor evaporates from the ocean it works its way up into the atmosphere and eventually creates clouds, who size depends on how much water vapor was evaporated. The heat that water vapors carried before they became clouds is eventually what triggers storms to occur. If there is enough heat influencing the…
storm, which occurred in the 1930’s, it affected the mid western people. The Dust Bowl…
"The roof was caving in and I thought I was going to die. It was like…
Air is composed of molecules. Air is matter. It has mass and takes up space. Air is composed of different gases such as nitrogen, oxygen, carbon dioxide, water vapor, and other gases. Air molecules are in constant motion. As they move, they come in contact with surfaces. Air molecules push and press on the surfaces they contact. The amount of force per unit area that air molecules exert on a surface is called air pressure. (What is Air Pressure 6) Air pressure is caused by all of the air molecules in the Earth's atmosphere pressing down on the Earth's surfaces. We can measure air pressure to help us predict weather conditions around the world. Temperature also affects air pressure because air contracts when it cools and expands when it is heated. So if air above a region of Earth cools, it does not extend to as high an altitude as the surrounding air. In this case, its pressure at higher temperature is lower than in the surroundings even when the pressure at the surface is the same as in surrounding areas. Then air flows into the cooler region at high altitude, making the total weight of air above the region greater than in the surroundings. This is a "high". The cool air descends to the earth's surface. Near the surface, the falling air spreads out,…
Throughout history, humans have been amazed by the various forces of nature. Most of them are associated with weather, and that is because so many different weather patterns exist. The diversity in climate will result in a wide range of weather conditions that stretch from relatively calm weather to dangerously destructive storms. Tornados are one of weather’s most phenomenons’ that have been known to occur in almost any climate on Earth; despite the great variation in weather patterns among the world’s many climates. It is important for everyone to understand what tornadoes are since they are one of the world’s most deadly forces of nature.…
What causes an "eddy" to form? An “eddy” is formed when wind encounters a solid object, a whirl of air is formed on the object’s downward side. The size and shape of the eddy depends on the speed of the wind, and the size/shape of the obstacle.…