Meteorology Test Vocab Flashcards
atmosphere
an envelope of gases that surrounds a planet
greenhouse effect
helps trap heat close to the Earth’s surface
greenhouse gas
CO2 - carbon dioxide
ozone
a form of oxygen that is made up of 3 oxygen atoms chemically bonded together (O3), is in the stratosphere
convection
the transfer of energy by the flow of a heated substance
conduction
the transfer of energy that occurs when molecules collide
radiation
the transfer of energy through space by visible light, UV radition, and other forms of electromagnetic waves
temperature
the measurement of how rapidly or slowly molecules move around
heat
the transfer of energy that occurs because of a difference in temperature between substances
air pressure
the downward push of the atmosphere due to gravity pulling air toward Earth’s surface
density
equals mass/volume and is proportional to the number of particles of air occuping a particular space
environmental laspe rate
the rate at which temperature changes in the vertical and troposhere
dry adiabatic lapse rate
the lapse rate that occurs in a vertically moving air parcel in which no condensation is occuring
wet adiabatic lapse rate
the lapse rate that occurs in a vertically moving air parcel in which condensation is occuring
biogeochemical cycle
the cycle describing everything living in our planet connecting through a chemical cycle
water cycle
the cycle that the water on Earth continuously goes through
carbon cycle
the cycle that the carbon of Earth continously goes through
nitrogen cycle
the cycle that the nitrogen on Earth continously goes through
air mass
a large body of air that takes on the characteristics of an area over which is forms
source region
the region over which an air mass forms
pressure systems
there is a high pressure system and low pressure system
coriolis effect
the effect that causes objects in our atmosphere to appear moving in a curved direction because of Earth’s rotation
trade winds
occur at 30* North and South, air sinks, warms, and moves towards the equator in a westerly direction
intertropical convergence zone
near the equator, trade winds from both hemispheres move together in the same direction, creates a region of low pressure, and is characterized by a band of cloudiness and occasional showers
prevailing westerlies
flow between 30* and 60* North and South latitudes, circulation pattern is opposite than the trade winds, they generally move toward the poles in an easterly direction
polar easterlies
lie between the 60* latitude and the poles, blow in a westerly direction from the East
jetstream
narrow bands of fast, high altitude, westerly winds, is caused by differences in temperature and pressure, there is large temperature gradient in upper-level aur results in strong westerly winds
fronts
narrow region separating two air masses of different densities
cold front
forms by fast moving cold air and runs into slow moving warm air, cold air sinks, warm air is pushed up, brings clouds, storms, and blizzards
warm front
forms by warm air overtakes a slow moving cold air mass, brings clouds, precipitation, and fog followed by warm weather
occluded front
forms by a warm air mass caught between 2 cold air masses, the 2 colder, denser, air masses push the warmer, less dense air mass up, brings precipitaion, after passes it brings cool, clear, weather
stationary front
forms by cold and warm air masses meet, but they can’t move each other, brings extensive clouds, heavy precipitation, and fog
weather station symbol
symbols used by meterologists to show various atmospheric and natural conditions about the weather on a given day and time
isobars
shows areas of equal air pressure
hurricane
powerful, swirling, storms that create strong winds, heavy rains, and storm surges
hurricane eye
the center of the storm, the area is calm and can be 20-40 miles across
eye wall
surrounds the eye, this is where the strongest winds and rain occur
rain bands
sprial outward and can extend a few hundred miles and have dense thunderstorms
Saffir-Simpson scale
a wind scale developed in 1971 by Herbert Saffir and Robert Simpson, used to classify hurricanes based off intensity of sustained winds
climate
climate is the long term and lasting weather trends
weather
different day-by-day conditions of a location, and over time makes up climate
climograph
combines a line graph and a bar graph to show the climate of a location over 30 years, displays the months, temperature, and amount of precipitation