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Extreme Weather E.1.
| Question | Answer |
|---|---|
| Ideal Gas Law | Pressure is proportional to Density times Temperature. This means that if the temperature goes up, the pressure must go up too or vice versa. |
| V=M/V X R X T | If the pressure remains the same and the system size can change, volume is proportional to temperature. |
| The amount of water the atmopsphere can hold... | increases exponentially with temperarue. |
| lapse rate | the rate of decrease in temperature with altitude |
| e=mc2 | fusion - mass is lost - source of all energy on earth - describes this relationship |
| If given a temp in Farenheight.... | C=5/9 (F-32) |
| Kelvin = | K= C + 273.16 |
| air pressure | the pressure exerted by the mass of the of the air above a given point, usually expressed in mb. |
| A north wind blows from the north toward the south | Why? |
| Stefan Boltzmann Law | E=kT^4 which means the amount of energy a black body can emit is dictated by its temperature raised to the fourth power. |
| blackbody | capable of absorbing all the electromagnetic radiation falling on it |
| Weins Law | The Wavelength of maximum emission in inversely related to temperature. y(max)= b/T. If the temperature goes up, the wavelength goes down. |
| Wavelength of Earth | 10 microns |
| Wavelength of the sun | .5 microns |
| Relative humidity | The ratio of the amount of water vapor actually in the air to the maximum amount of water vapor required for saturation at that particular temperature and pressure. When Dew point and temperature are close together, the relative humidty is high |
| Dew Point | Represents the temperature to which air must be cooled (with no change in moisture content or air pressure) in order for saturation to occur. |
| Conduction | the movement of heat through a substance by the collision of molecules |
| Convection | the transfer of heat by the mass movement of the fluid - vertical motions moving heat |
| Advection | the HORIZONTAL transfer of any atmosphereic property by the wind |
| 100% energy from the sun is: | absorbed, reflected, or transmitted |
| Albedo | the amount of sunlight reflected, divided by the amount of sunlight available to be reflected |
| Albedo of the earths surface | 4/55 |
| Absolute humidity | describes the mass of water vapor in a fixed volume of air, or the water vapor density |
| Sasonality | is the function of tilt (the earth is tiled by 23.5 degrees) |
| At the summer solstice... | The sun shines directly on the Tropic of Cancer |
| The earth rotates | Counter-Clockwise |
| Radiation | energy that travels in the form of waves that release energy when they are absorbed by an object |
| Maximum Angle elevation of the sun | Theta=90-latitude+declination angle of the sun. EX: Theta=90-42(AA)+0 (equinox) so the suns highest degrees is 48 above the horizen. If the sun is in the other hemisphere, you subtract the declinaiton angle. |
| Factors the determine seasonal temperature variations | angle at which the sunlight strikes the surface, and by how long the sun shines on the any lattitude. |
| lag in seasonal temperature | because although the incoming sun is greatest in June, it still exceeds outgoing energy from the earth for a period of at least several weeks. When incoming solar energy and outgoing earth energy are in balance, the highest average temperature is attained |
| specific humidity | describes the mass of water vapor in a fixed mass of air |
| vapor pressure | expresses the amount of water vapor in terms of the partial pressure that the water vapor molecules exert |
| Saturation Vapor Pressure | expresses the vapor pressure at which an air parcel will be saturated |
| Relative humidity will increase.... | as air cools, and decreases as air warms. |
| The highest realtive humidity tends to be at sunrise... | this is because it is the coolest part of the day |
| The air is more likely to be saturated | in the tropics. |
| Dew Point temperature | is an indicator of the airs water vapor content. High dew points indiciate high water vapor content and vice versa. |
| Density | Density = p/RT: Buoyancy depends on density difference at the same altitude. It temperature goes us, density goes down (inverse) |
| Lapse Rate | as altitude increases, temperature decreases; the rate of decrease is called this. |
| adiabtic lapse rate | the ideal equilibrium value |
| absolutely unstable | when the surface air is much warmer than the air aloft, (i.e. when the enviromental lapse rate is greater than the dry adiabatic rate) |
| adiabatic process | a process in which an air parcel expands and cools, or compresses and warms, with no interchange of heat with its surroundings |