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Earth

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Earth as a planet
Rotation: Provides day & night. Turning of Earth on its axis. 1000 mph at equator.
Coriolis: Causes winds to be turned or deflected from their path. Deflection to right in N. hemi.
Revolution: Motion of earth along path. Creates years because it takes 365 days to make one.
Inclination: The tilt of the earth’s axis.
Parallelism: Tendency of earth to always stay parallel and not transform its orbit.
Solstices: summer/winter june 21/22 december 21/22 when the sun position of noon sun is at its farthest position from equator 23.5 degrees N/S
Equinoxes: spring/autumn march 21/22 septemeber 22/23 when the day is equal (day and night)
Analemma: Shows path of noon sun angle throughout months
Tropic Cancer: 23.5N Tropic Capricorn 23.5S
(Farthest the sun can be away from equator that reaches 90 degrees above earth)

Solar Radiation
Insolation: Incoming solar radiation. Incoming is shortwave and outgoing is long wave. Duration: the longer the sun is out the more heat will be produced Intensity: angle the sun hits the earth. More intense closer to equator.
Atmosphere: Constituents- Nitrogen: 78% Oxygen: 21% Carbon Monoxide: most of the remaining
Selective screening: reflection- reflects radiation refraction- changes direction of radiation absorption- absorbs radiation
Attenuation: absorb, reflect, refract

Elements of weather and climate
Temperature: degree of heat, measure by thermometer
Pressure: 29.92 Hg (mercury) or 1013 mB. Measured either mercury barometer(Hg) or aneroid Barometer (mb)
Moisture: presence of liquid, can be related to humidity
Winds: H to L Speed- related to pressure differential. The greater difference the greater wind speed Named according to the direction from which they flow
Atmospheric layers: troposphere 10km (normal lapse rate 3.6F, all weather events occur), tropopause (temp remains fairly average throughout), stratosphere 50km (ozone layer, constant at bottom then increase higher up).mesosphere, thermosphere.
Energy transfer: radiation- incoming short wave outgoing long wave, heats surface conduction- physical contact, heating through air convection- lifting current of heated air
Pressure zones: Polar high 60-90 Subpolar low 30-60 Subtropical high 0-30 Equator low 0 Subtropical high0-30 Subpolar low 30-60 Polar high 60-90
Wind Belts:

S westerlies also called roaring 40’s

Hadley cell: links equatorial low and subtropical high, seasonal shift, related to changing solar radiation.

Moisture, clouds, precipitation
Normal lapse rate: air not moving, 3.6F /1000
Dry adiabatic: 5.5F/1000 or 10C/1000
Wet adiabatic: 2-3F/1000 or 3-6C/1000
Absolute humidity: amount of water vapor in air
Relative humidity: the amount of moisture the air can hold, depends on temperature.
Latent heat of vaporization: energy required to transform liquid to gas (cooling process)
Latent heat of condensation: energy required to transform gas to liquid (heating process)
Precipitation causing conditions: Convectional- lifting with excess radiation. Orographic- lifting due to mountains (winward is west side, Leeward is east. Frontal- lifting due to fronts colliding
High pressure systems: clockwise, temp increase, RH decrease, diverging, anticyclonic, fairweather
Low pressure: counter clockwise, converging, rising air, cyclonic

Rising air, expands, cooling of air, RH increase

Cirrus clouds: ice crystals
Cumulo-nimbus clouds: thunderstorm clouds, greater height greater storm

Deposition: transformation of gas into solid

Condensation level: the level at which clouds form
Absolute: grains, how much water is in the air
Relative: % of water in air, at 100% completely saturated

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