vocab words
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| A large body of air covering hundreds or thousands of square kilometers that has a relativly uniform temperature, pressure and humidity. | air mass
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| In Meteorology. a region with relatively uniform temperature and humidity over which air masses form. | source region
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| An air mass that is warmer than the surface over which it moves. | warm air mass
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| An air mass that is colder than the surface over which it moves. | cold air mass
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| A zone of contact between two dissimilar air masses where neither is advancing. It usually results in no change in the weather for several days | stationary front
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| The advancing surface of a warm air mass as it pushes against and over a cooler air mass | warm front
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| The advance surface of a cold air mass as it moves under a warmer air mass. | cold front
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| A line of violent thunderstorm that sometimes accompanies an advancing cold front. | squall line
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| A front formed when a cool air mass and rapidly moving cold air mass trap a warm air mass between them. The warm air mass is lifted, losing all contact with the ground. | occluded front
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| A regional wind system that reverses periodically, alternately bringing wet and dry seasons. | monsoon
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| The horizontal force exerted on a mass of air that has a higher pressure on one side than on the other | pressure gradient force
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| A high-altitude wind that is controlled by the relative influence of the pressure gradient force and the Coriolis effect. | geostrophic wind
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| A weather system centered on a low-pressure area surrounded by a wind circulation pattern spiraling counterclockwise in the Northern Hemisphere. | cyclone
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| An area of relatively higher atmospheric pressure. It typically contains a clockwise rotating wind system in the Northern Hemisphere. | anticyclone
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| A high speed meandering wind current, flowing from west to east | jet stream
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| A breeze that blows onshore from the ocean, usually during the daytime. | sea breeze
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| A breeze that blows from shore to sea, usually at night. | land breeze
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| A breeze that blows up on a mountainside from the valley when air high on the mountain heats and rises. | valley breeze
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| A breeze that flows down the mountain into the valley at night that is caused by cooling air at higher elevations | mountain breeze
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| Consistent winds extending from the subtropical highs toward the equator, turned by the Coriolis effect into easterlies | trade winds
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| Winds blowing consistently from southwest to northeast between 30 and 60 north and south latitudes | prevailing westerlies
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| Winds blowing consistently from northeast to southwest from the northern polar region bringing cold dry air to Asia and North America | polar easterlies
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| A permanent low pressure belt of usually windless air near the equator caused the vertical rising of warm air. | doldrums
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| Bands of nearly permanent high pressure at approximately 30 north or south latitude caused by descending cold air. | horse latitudes
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| The prevailing low pressure belt at approximately 60 north or south latitude | subpolar low
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| An area of high atmospheric pressure at either pole caused by subsiding cold air | polar high
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| A rainstorm that includes lightning and thunder | thunderstorm
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| A towering cumulonimbus cloud that builds rapidly | thunderhead
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| An electrical discharge that occurs either between clouds or between cloud and the ground | lightning
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| Prior to a lightning stroke, a zigzag column of highly ionized air that establishes the chanel for subsequent lightning discharges and return strokes | Stepped Leader
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| A lightning discharge from the ground up to a cloud along the ionized path taken by the original strike from the cloud to the ground | Return Stroke
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| Lightning consisting of branches connected to the main stroke. | Forked Lightning
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| A violent, narrow,rotating funny shaped local windstorm. | Tornado
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| A tornado that occurs over seas | Waterspout
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| In atlantic and Eastern Pacific oceans, a strong, large area cyclonic storm with wind speeds exceeding 117km | Hurricane
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| What hurricanes are called in the Western Pacific and Indian Ocean regions | Typhoon
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| See Cyclone and Hurricane | cyclone (Hurricane)
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| The circular center of low pressure in a hurricane that is characterized by few clouds , relative calm, and vertical air movement | Eye
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| The larger than normal surface waves that proceed outward fron a slow movung hurricane | Storm Swell
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| The large increase in sea level along the shores of a nearby hurricane | Storm Surge
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| A metal rod attached to the highest points of a building | Lightning Rod
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