Chapter 1C: Weather Basics (Meteorology) Flashcards
(40 cards)
Earth-Sun relationship
______________: electromagnetic radiation emitted by the sun
Solar Radiation
Earth-Sun relationship
rate at which solar radiation reaches the upper limits of earth atmosphere on a surface normal to the incident radiation and at earth’s mean distance from the sun
Common value = _____________
Solar Constant, 1,374 W/m2
Earth-Sun relationship
___% of solar energy is absorbed by land and ocean.
some are absorbed and reflected by clouds and atmosphere.
51
Earth-Sun relationship
_______________ = “short” wavelengths (range 0.1 to 4.0 μm)
____________________ = “long” wavelengths (4.0 to 50 μm)
Solar radiation, Terrestrial radiation
Earth-Sun relationship
percent of the incoming solar radiation that is reflected from a surface.
higher albedo = less heat, mostly on white colors
Albedo
Earth-Sun relationship
___________________: affects the solar radiation received at any location and time
a. ______________ - when the sun is farthest from the earth (occurs about July 4)
b. _____________ - when the sun is nearest from the earth (occurs about January 3)
Sun-Earth Geometry
a. Aphelion
b. Perihelion
Earth-Sun relationship
____________ when the sun’s apparent path is displaced farthest north (Tropic of Cancer) or south (Tropic of Capricorn) from the earth’s equator.
a. _________ Solstice - north pole faces the sun, more sunlight sa northern hemisphere.
b. __________ Solstice -south pole faces the sun.
Solstice
a. Summer
b. Winter
Earth-Sun relationship
when the sun passes directly over the equator or when the sun’s apparent path and plane of the earth’s equator coincide.
a. ___________ Equinox:
on or about March 21
b. ____________ Equinox:
on or about September 22
Equinox
a. Vernal
b. Autumnal
Earth-Sun relationship
_________________: occur because of the tilt of the Earth’s axis keeps a constant as the Earth revolves around the Sun.
a. Summer in Northern Hemisphere
b. Winter in Southern Hemisphere
Seasons
Atmospheric Parameters
Weather becomes stormy when air pressure falls and becomes fair when air pressure rises.
What is this about?
Pressure
Atmospheric Parameters
instrument used to measure pressure
Barometer
Atmospheric Parameters
amount of heat energy possessed by an object
degree of hotness or coldness of an object
Temperature
Atmospheric Parameters
Units of temperature in metric, english, and universal
Celcius, Farenheit, and Kelvin
Atmospheric Parameters
amount of water vapor in the air.
Humidity
Atmospheric Parameters
measures the amount of water in the air in relation to the maximum amount of water vapor (moisture). The higher the temperature, the more water vapor the air can hold.
Relative Humidity
Atmospheric Parameters
Explain the local atmospheric circulation/cycle.
- Warm air rises and becomes cool.
- Maaarawan yung cool air then iinit.
- Warm air meets cool air then formation ng clouds with thunderstorms.
Atmospheric Parameters
Give 2 types of breezes
Sea and Land breezes
Atmospheric Parameters (Air Circulation)
Air would rise near the equator and travel in the upper atmosphere toward the poles, then cool, descend into the lower atmosphere, and return toward the equator.
Hadley Circulation
Atmospheric Parameters
produces the changes in wind direction and velocity towards the equator.
yung tradewinds laging asymptotic papuntang equator from northern and southern hemisphere.
Coriolis effect
Atmospheric Parameters
Explain Coriolis effect
Yung tradewinds pupunta sila sa equator and since equator receives most of the solar energy, nagiging warm yung air, magra-rise, then meets the cold air, forming clouds.
Give 7 Climatic Controls.
- Topography and location
- Trade winds
- Fronts
- Intertropical convergence zone (ITCZ)
- Monsoonwinds
- Tropical cyclones
- Easterly waves
Climatic Controls (Topography and location)
Explain the 4 types of climates.
Type 1: experiences 2 seasons, dry and wet.
Type 2: No dry season and madalas natatamaan ng bagyo.
Type 3: Similar to type 1 pero ‘di ganun katagal yung dry season.
Type 4: Similar to type 2 pero may evenly distributed rain at may dry season.
Climatic Controls
a belt of low pressure which circles the Earth generally near the equator where the trade winds of the Northern and Southern Hemispheres come together.
ITCZ, Intertropical Convergence Zone
Climatic Controls
Explain ITCZ.
yung mga low pressure area ay nagla-line up sa belt then circulates, creating clouds/cyclones.