| A | B |
|---|
| air mass | large body of air throughtout which temperature and moisture content are similar |
| air pressure | measure of how much force is exerted on an air mass |
| anemometer | measures wind speed |
| barometer | measures air pressure |
| cyclone | storm system that rotates around a low pressure |
| dew point | temperature at which water vapor begins to condense |
| front | boundary between 2 different air masses |
| isobar | line of equal pressure on a map |
| isotherm | line of equal tempterature on a map |
| meteorology | study of weather patterns and conditions |
| precipitation | deposit from the sky (rain,snow,sleet etc) |
| sling psychrometer | used to determine relative humidity |
| saturated | full of moisture |
| transpiraton | passagae of water from a plant |
| Climate | avg temp, air pressure and precipitation over a long period of time |
| specific heat | amount of heat energy required to heat 1 gram of substance 1 degree. Water is the highest |
| Sea Breeze | High pressure over ocean, low pressure over land. Wind travels high pressure (oceans) to low pressure (land) creating a "breeze" |
| Land Breeze | low pressure over ocan, high pressure over land, wind travels from high pressure (land) to low pressure (oceans) createing a breeze |
| orographic effect | air mass is forced from low elevation to a high elevation due to mountains; cooling and condensing effect on the air mass on the windward side of the mountain, making it rain |
| windward | side of mountain facing wind, usually rain |
| leeward | side of moutnain range that is NOT facing the wind. usually dry |
| rain shadow | area on the leeward side of a mountain range very little rain |
| air mass | large area of air, can be warm, wet, cold, dry, etc |
| moisture | liquid in the air mass or cloud |
| Humidity | amount of water vapor in air mass |
| relative humidity | % of water vapor vs. dry air on air mass |
| dry bulb | undistrubed thermometer sling psychrometer |
| wet bulb | bulb of a termometer that is wrapped with a wet cloth |
| dewpoint | temp.where "dew happens" |
| cloud | air mass that is saturated with water vap making condensation (I believe clouds are the white looking things) |
| condensation nuclei | need this for clouds |
| storm track | west to east in US; predictable path storms take |
| cold front | cold air mass moving |
| warm fronts | warm air mass moving |
| descending air | dry air mass moves from high in the atmosphere to surface of the Earth |
| Maritime region | air mass started over water, moist |
| continental region | air mass started over land, dry |
| tropical region | warm location (low latitudes) where an air mass starts |
| station model | weather map showing temp, dewpiont, air pressure, etc, see ESRT |
