Chapter 2: Climate

Created by Tatum Miller

Reflected
When light, heat, sound or other energy bounces off a surface instead of being absorbed or transmitted through it

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TermDefinition
Reflected
When light, heat, sound or other energy bounces off a surface instead of being absorbed or transmitted through it
Scattered
When solar radiation(sunlight) is dispersed in multiple directions
Absorbed
When light, heat, sound or other energy is taken in by a material or surface instead of being reflected or transmitted
Earth’s Axial Tilt
23 1/2 degrees- Effects climate and dispersal of heat on the earth (atmospheric temp)
Summer and Winter Solstices
Summer- The longest day and shortest night of the year when the earth's poles has its maximum tilt towards the sun Winter- The shortest day and longest night of the year when the earth's poles has its maximum tilt away from the sun
Vernal and Autumnal Equinoxes
When the sun is positioned directly over the equator Vernal=spring Autumnal=fall
Temperate/Tropical Regions
Temperate= above or below the tropic lines Tropic= between the tropic lines
Latitude
Distance north or south from the earth's equator Effects atmospheric temp
Tropic Lines Cancer/Capricorn
23 1/2 degrees
Density
Thickness- decreases with altitude and air pressure (weight of atmosphere decreases)
Adiabatic Cooling
The process by which air cools without losing heat to its surroundings-- occur due to the expansion of air
Hadley, Ferrel and Polar Cells
term image
Hadley= north and south- surround equator Ferrel= surround hadley Polar= top and bottom-surround Ferrel
Horse Latitudes
Sub-tropical high, high pressure, clear weather
Doldrums (ITCZ)
At the equator Equatorial low, low pressure, rising air, weather: severe storms- hurricanes, typhoons, cyclones, etc
Coriolis Effect
The effect on global circulation (air then water) patterns Caused by the rotation of the earth Multiple cells- Hadley, Ferrel, and Polar Deflection of the circulation pattern to the: -Right northern hemisphere -Left in the southern hemisphere
Saturation Vapor Pressure (SVP)
The maximum amount of water a given volume of air can hold -warm air has a higher SVP than cooler air
Actual Vapor Pressure (AVP)
The current amount of water a given volume of air contains
Vapor Pressure Deficit (VPD)
The difference between SVP and AVP
Relative Humidity
(AVP/SVP)*100
Dew Point Temperature
Precipitation occurs when the AVP equals the SVP
El Nino/Southern Oscillation (ENSO)
1. Trade winds blow to the west 2. Surface water moves toward the west 3. Allows an upwelling of deep cold ocean water along the western coast of South America(Peru) 4. Warm water trapped in the western Pacific Ocean 5. Abundant rainfall in the west (Indonesia and Australia) 6. Dry conditions along the coast
About how much of the solar radiation that reaches the outer limits of the atmosphere reaches the earth's surface?
About half of sunlight
What two factors explain the variation across the earth’s surface (attitudinally and seasonally)?
The earth's axial tilt and the curvature of the earth
What are the two major gasses in the atmosphere?
The two major gasses in the atmosphere are Nitrogen at 78% and Oxygen at 21%
El Nino year steps
1. Decrease in trade winds 2. Less surface water moves towards the west 3. Decreasing the upwelling of deep cold ocean water along the western coast of South America (Peru) 4. Warm waters are in the Central Pacific 5. Rain follows the warmer water to the east 6. Flood in Peru 7. Drought in Indonesia and Australia (North)