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exam 2 definitions

barometer used to measure atmospheric pressure
advection type of fog that forms when warm moist air moves over cold surface
isobars lines drawn on map to connect points of equal atmospheric pressure
anemometer measures wind speed
coriolis effect result of earths rotation from west to east causing objects to curve right in northern hemisphere
jet stream narrow zone at high altitude w/ strong temp. gradient
rossby waves waves at polar front in northern hemisphere marks boundary between cold polar air and warm tropical air
thermocline boundary between warmer surface ocean water and colder subsurface ocean water
cyclone uplift causes condensation and precipitation
anticyclone downward moving air causes relatively clearer conditions
mid latitude cyclone term for large inspiral of air that forms along polar front doinant system, carries cold front
storm surge sudden rise in water level brought on by hurricane
doldrum light and variable equatorial winds due to weak temp. gradient and weak pressure gradient near equator
climate avg weather of region
temperature regime characteristic temp pattern
Hydrosphere 99% oceans, glaciers, and ice sheets
hydrologic cycle process of water moving between spheres
specific humidity total quantity amount of water vapor in air
reltive humidity amount of water vapor in air relative to mx amount air con hold
dew point temperature at which an air mass holds its full capacity of water vapor
lifting condensation level altitude at which condensation occurs
dry adiabatic lapse rate when air rises it cools at the rate until it reaches dewpoint: 5.5 degrees F
wet adiabatic lapse rate after reaching dewpoint air rises and cools at: 2.7 degrees per 1000FT
fog cloud layer closest to earths surface
cloud types stratiform cumuliform
orographic precipitation air is forced up over mountain range
convectional precipitation air heated by patch of warm ground
cyclonic precipitation air lifted by cold front
atmospheric pressure pressure exerted by weight of air in atmosphere
standard sea level pressure 1013.2mb
pressure gradient change in atmospheric pressure measured along line at right angles to the isobars
convective wind system heating causes air to rise and form zone of low pressure
geostrophic wind winds at high levels that blow paralled to isobars
hadley cell convection loop of air between 0 and 30 degrees North and SOuth
prevailing westerlies between 30 to 60 N and S
polar easterlies 60 to 90 degrees
thermohaline cycle depends in temp. and salt content
Created by: 1738400229818217