What is the best source region for an air mass?
large flat areas An air mass is a large body of air that has similar temperature and moisture properties throughout. The best source regions for air masses are large flat areas where air can be stagnant long enough to take on the characteristics of the surface below.
What is a source region for an air mass?
Parts of the Earth's surface where the air can stagnate and gradually gain properties of the underlying surface are called source regions. The main source regions are the high pressure belts in the subtropics (giving rise to tropical air masses) and around the poles (the source for polar air masses).
What are the characteristics of a good air mass source region?
If an area is described as a "good air mass source region," what information can you give about it? That the area is long, flat, and uniform for air masses to originate and retain similar properties with the surface below it, such as arctic plains and warm oceans.
What are the four source regions for air masses?
Air masses are commonly classified according to four basic source regions with respect to latitude. These are Polar (cold), Arctic (very cold), Equatorial (warm and very moist), and Tropical (warm).
What is the best source region for an air mass quizlet?
A good source region for an air mass would be: generally flat areas of uniform composition with light surface winds.
What is continental tropical air mass?
Continental tropical (cT) air masses are hot, dry, unstable at low levels and generally stable aloft (upper-level ridge) Continental tropical air masses originate in northern Mexico. They are characterized by clear skies and negligible rainfall.
What are source regions?
Source Region in meteorology is a region where air masses get their specific humidity and temperature. A source region could be land or water. It is called maritime and continental air masses if the air masses sit over water and land, respectively.
What are the characteristics of an air mass source region what conditions are needed to allow an air mass to develop ?)?
What conditions are necessary for an air mass to form? It must stay over a land or sea surface long enough to acquire the temp/humidity/stability characteristics of the surface below. They are associated with source regions, they must be extensive, physically uniform, and have stationary air.
Which of the following best defines an air mass?
An air mass is a large volume of air in the atmosphere that is mostly uniform in temperature and moisture.
What is likely the source region of for an air mass that is maritime tropical air mass?
Maritime tropical air masses originate over the warm waters of the tropics and Gulf of Mexico, where heat and moisture are transferred to the overlying air from the waters below. The northward movement of tropical air masses transports warm moist air into the United States, increasing the potential for precipitation.
What location is the most likely source region for a continental polar air mass?
Just to the west of Hudson Bay lies the source region for continental polar (cP) air masses that affect the North American continent. Only present during the winter months, this high latitude, landlocked source region generates air masses that are extremely cold and dry.
What is the source region of a tropical maritime air mass?
the Atlantic Ocean Tropical maritime The source region for this air mass is warm waters of the Atlantic Ocean between the Azores and Bermuda.
What is the equatorial air mass?
Equatorial air masses develop near the Equator, and are warm. Air masses are also identified based on whether they form over land or over water. Maritime air masses form over water and are humid. Continental air masses form over land and are dry.
Which one of the following is the source region for the formation of air masses a the equatorial forest C the Siberian plain B the Himalayas d the Deccan plateau?
The correct answer is the Siberian Plain. Source region: It is an extensive region of the earth's surface where large masses of air having uniform temperature and humidity conditions originate.
What are air masses quizlet?
Air Mass. An air mass is a huge body of air in the lower atmosphere that has similar temperature,humidity, and air pressure at given height.
Which would be the most likely region for a warm humid air mass to develop?
Maritime Tropical (mT) air masses develop over warm tropical waters. They are warm, moist (high dew points), and unstable near the surface, which is ideal for the development of clouds and precipitation.
Which area in North America is most likely to be a source of maritime tropical air?
Off the southwestern coast of the United States and Mexico is a large maritime tropical (mT) air mass source region. Air masses generated in this area often bring heavy downpours of rain to the southwestern United States. 22.
What location is most likely source region for a maritime tropical air mass?
Maritime tropical air masses originate over the warm waters of the tropics and Gulf of Mexico where heat and moisture are transferred to the overlying air from the waters below. The northward movement of tropical air masses transports warm moist air into the United States increasing the potential for precipitation.
Which air mass comes from warmer regions?
Meteorologists identify air masses according to where they form over the Earth. There are four categories for air masses: arctic, tropical, polar and equatorial. Arctic air masses form in the Arctic region and are very cold. Tropical air masses form in low-latitude areas and are moderately warm.
What is a tropical air mass?
Tropical air masses form in low-latitude areas and are moderately warm. Polar air masses take shape in high-latitude regions and are cold. Equatorial air masses develop near the Equator, and are warm. Air masses are also identified based on whether they form over land or over water.
Where do air masses typically clash?
Air masses typically clash in the middle latitudes, producing some very interesting weather. The purpose of this activity is to introduce air masses that commonly influence the weather in the United States, characteristics of these air masses, and how to identify air masses on weather maps.
Where does a cold moist air mass form?
Maritime Polar A far greater factor along the West Coast, the icy cold waters of the North Pacific and North Atlantic oceans push cool, humid masses of air to form.
What is the definition for an air mass?
An air mass is a large volume of air in the atmosphere that is mostly uniform in temperature and moisture. Air masses can extend thousands of kilometers in any direction, and can reach from ground level to the stratosphere—16 kilometers (10 miles) into the atmosphere.
How are air masses classified quizlet?
Air masses are classified by temperature (polar or tropical) and the surface (continental or maritime) over which they form.
Where are the primary air mass source regions in North America?
The polar continental, the maritime tropical, and the maritime polar Pacific are the most influential air masses. Polar continental air reflects the spread of a negative temperature anomaly over much of the continent.
What air mass is warm and humid?
Maritime air masses Maritime air masses form over water and are humid. Continental air masses form over land and are dry. Therefore, an air mass that develops over northern Canada is called a continental polar air mass and is cold and dry. One that forms over the Indian Ocean is called a maritime tropical air mass and is warm and humid.
What type of air mass is cold and humid?
Type 4: Water, Water Everywhere It is also considered a secondary category and is abbreviated “m.” Therefore, a humid, cold mass that develops over polar oceans is categorized as “mP.” This type of air mass impacts the U.S. west coast in winter.
How do the source regions of polar and tropical air masses differ?
Polar air masses are characterized by cold air near the surface while tropical air masses are warm or hot.
What kind of air mass would be warm and dry?
Continental air masses Equatorial air masses develop near the Equator, and are warm. Air masses are also identified based on whether they form over land or over water. Maritime air masses form over water and are humid. Continental air masses form over land and are dry.
What air mass is warm and moist?
Maritime tropical Maritime tropical (mT) air masses are warm, moist, and usually unstable.