Nats 101 Exam

# Nats 101 Exam - Nats 101 Exam #1 Outline Chapter 1.-...

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Unformatted text preview: Nats 101 Exam #1 Outline Chapter 1.- Composition of the atmosphere: The most abundant gases in the atmosphere are Nitrogen and Oxygen Green house gases: Carbon Dioxide and Water Vapor Concern of changing concentration of greenhouse gases: Vertical profiles of temperature and pressure: Layers of the atmosphere: Thermosphere Mesosphere Stratosphere Troposphere Layers of the atmosphere are determined by the manner in which the air temperature varies through it, by the gases that comprise it, or even by its electrical properties. (Lapse rate) The physical mechanisms that govern how temperature changes in these layers is called temperature lapse rate. Mass: is an int rinsic property based on the molecular composition of matter. As long as the amount of matter does not change, it’s mass remains constant- regardless of location S. I. units: grams (g) or kilograms (kg) Weight: the mass of an object times the acceleration of gravity; W= mass (kg)* gravity (kg m s-2) Density: the mass per unit volume; p=m/v SI units: g/L Pressure: is the force per unit area; P=F/A SI units: atmo; millibars air pressure; Atm The atmospheric pressure is the weight of a column of air above. The typical sea level pressure is 1000 mb How does air pressure change as a function of altitude? Station model notation : * Snow Flag is 50, a full barb is 10, half a barb is 5 I knot = 1.15 mph Weather: is the condition of the atmosphere at a particular time and place: Temperature: degree of hotness or coldness Pressure: force of the air above Humidity : amount of water vapor in the air Clouds: water droplets or ice crystals above the surface Precipitation : water that falls from clouds and reaches the ground. Visibility : farthest distance one can see Wind : horizontal movement of air Climate: the statistical characteristics of weather elements over a given period of time. Variability of snowfall Daily average temperature at a weather station Seasonal or yearly average rainfall in the U.S. Chapter 2.- Energy: warming the Earth and the Atmosphere Energy and temperature: Temperature is a measure of average kinetic energy Conversions of temperatures: o Kelvin = C + 273 o Celsius = 5/9(F-32) o Fahrenheit = C+32 Three mechanisms of heat transfer o Conduction: transfer of heat from molecule to molecule within a substance. o Convection: transfer of heat by the mass movement of a fluid or gas, like water and air. Warm part of the fluid rises, cold part sinks....
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## This note was uploaded on 04/09/2009 for the course NATS 101 taught by Professor Allister during the Spring '08 term at Arizona.

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Nats 101 Exam - Nats 101 Exam #1 Outline Chapter 1.-...

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