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54 Cards in this Set
- Front
- Back
front
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boundary between two different air masses
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maritime tropical
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warm and moist air mass
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hurricane
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a doughnut shaped ring of a strong counterclockwise winds exceeding 115 kilometers per hour and surronding an area of extremely low pressure at the center
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What type of damage can a hurricane cause?
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wind damage, storm surge, and inland freshwater flooding
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eye
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relative calm area of clear skies in the middle of the hurricane
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How do hurricanes lose strength?
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as they move over land where the source of warm moist air is cut off or when they move over colder ocean waters
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adiabatic
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temperature change when no heat is added or removed to the system
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When does condensation occur in rising air?
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when the air temperature and dew point temperature reach an altitude where they are the same temperature
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weather forecasting
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methods used to determine the future state fof the atmosphere
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How is it possible for a temperature to change to occur when no heat is added or subtracted?
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compression and expanding of gas
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How are moisture and energy trnsferred in the atmosphere?
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convection, winds, and the adiabatic process
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moist adiabatic lapse rate
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when a moist air rises, heat is released to the surronding air during condensation, the cooling rate slows to 6 dgrees per kilometer
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What is a stationary front?
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It occurs when a warm air mass and a cold air mass are side by side with neither moving. Weather is similar to a warm front.
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Whatwould happen if the global wind convection systems did not exist to redistribute energy?
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the pole would become colder whole the tropics grew warmer
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Saffir-Simpson Hurricane Scale
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rates wind speeds, surface pressure, storm surges, and damage potential
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storm surge
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a dome of water 65 to 80 km wide near the point where the eye lands
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tropical storm warning
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tropical storm conditions are expected in your area within the next 24 hours
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How is the Earth unevenly heated and what does this result in?
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There is a surplus of incoming energy at teh tropical latitudes and a deficit at the poles. These resulting in zones of prevailing winds.
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tracks
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paths of air masses that travel through the United States
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what do isobars drawn close together indicate?
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steep pressure gradients and strong winds
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tropical storm watch
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tropical storm conditions with sustained winds from 39 to 73 miles per hour are pissible in next 36 hours
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When and where do hurricanes develop?
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In the late summer over ocean water that reach 27 degrees or higher
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Far ahead of where it meets the ground are extended periods of precipitation. What type of front is this?
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warm front
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anticyclone
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is a high pressure air mass with tthe winds moving in a clowck wise direction away from the center
remember hanna goes outside to get high |
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What happens when a parcel of air rises and cools?
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its capacity to hold water vapor decreases and its relative humidity increases
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What happens to density when the amount of moisture in the air increases?
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the density decreases
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probability of occurrence
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the likelihood that the weather will change over a period of time
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What type of information does a station model include?
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amount of cloud cover, barometric pressure, temperature, dewpoint, wind direction, wind speed
(in reference tables) |
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How do clouds form?
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Clouds form from condensation of rising air
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synopsis
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a summary of weather conditions all over the United States
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which side of the mountain had drier air?
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leeward side, downslope
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maritime polar
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cool and moist
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hurricane watch
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hurricane conditions are possible in your area within the next 36 hours
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What type of weather characteristics are associated with a cyclone?
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clouds and precipitation
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What is the corrider in the northeast?
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the area where all air masses move making weather difficult to predict
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What happens in an occluded front?
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A faster moving cold front overtakes a slower moving warm front the warmer air, on the ground the weateher characteristivs of both fronts occur without a gap of sequence
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continental polar
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cold and dry
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cyclone
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a low is a low pressure air mass with the winds moving in a counterclockwise direction in toward the center
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What does decreasing air pressure bring?
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warm unsettled air and rainy weather
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mid-latitude cyclones
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a cyclone where a cold front catches up with a warm front. They tend to last about seven days.
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How do you convert pressure on a station model to milibars?
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when an abbr. is below 500 add a 9 in front ex. 196 - 1019.6 mb when an abbr is above 500 add a 9 infront of it. ex. 576- 957.6 mb
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dry adiabatic lapse rate
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when a sample of dry air rises or descends it temperature changes adiabatically at a rate of 10 degrees per kilometer
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What weather is associated with anticyclones?
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cool, clear weather
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What happens to density when pressure decreases?
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density decreases
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Which front moves fastest?
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cold fronts
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When have most of the improvements in weather forecasting occured?
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in the last half century
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hurricane warning
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hurricane conditions are expected in 24 hours or less
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tornadoes
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voilent windstorms what take the form of a rotating funnel of air that extends downward from a cumulonimbus cloud
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waterspouts
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tornadoes over water
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continental tropical
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hot and dry
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What happens when a cold front moves through?
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thunderstorms occur and precipitation for a short period of time. It stops abruptly and becomes cool and clear
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What does increasing air pressure bring?
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cool anc clear weather
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squall lines
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moving lines of thunderstorms
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Explain the temperature changes as moist air is forced over a mountain
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warm,moist air travels over windward side of the mountain, it cools until, when the air descends down the mountain the air heats up
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