total weather (in progress)
TRANSCRIPT
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1.WEATHER
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THE SHORT TERM CONDITION OF THE ATMOSPHERE
Weather is…
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Weather is the result of the interrelationship between the following 4 ATMOSPHERIC VARIABLES:
TEMPERATURE HUMIDITY
AIR PRESSURE WIND
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*measures how much
kinetic energy the air molecules have
1.Air Temperature:
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* caused by the weight of atmosphere pushing down
2. Air Pressure:
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3. Wind:Horizontal Movementof aircaused by differencesin pressure
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4. Humidity:
Moisture content of the atmosphere
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In what layer of our atmosphere does our weather occur?Troposphere
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What is our atmosphere made of?
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Nitrogen78%
Oxygen21%
Argon0.93 %Carbon Dioxide0.03 %Water vapor0.0 to 4.0 %0.01 % Neon
HeliumMethaneKryptonHydrogenOzoneXenon
Other1%
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See Front Cover of your ESRT!!!
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*measures how much
kinetic energy the air molecules have
1.Air Temperature:
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Each time a moleculehits the thermometer bulbenergy is transferred and the temperature rises
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Air molecule
HOTCOLD
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HOTCOLD
WHICH SAMPLE HAS MOREKINETIC ENERGY? Motion
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HOTCOLD
WHICH SAMPLE HAS MOREKINETIC ENERGY? Motion
Energy transferred
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HOTCOLD
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HOTCOLD
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HOTCOLD
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HOTCOLD
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HOTCOLD
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HOTCOLD
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HOTCOLD
Hot air risesbecause of increased kinetic energy
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Three scales are use to measure temperature:1. Fahrenheit2. Celsius3. Kelvin
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WE WILL USE THIS
THERMOMETER TO
CONVERT FROM
CELSIUS TO
FARENHEIT TO
KELVIN
SEE REFERENCE
TABLE PAGE 13
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Each notchIs worth2 degrees
Each notch is worth 1 degree
Each notchis worth1 degree
190
170
150
95
85355
345
335
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1. FARENHEIT
2. CELSIUS
3. KELVIN
ICE BOILINGWATER
32
0
273
212
100
373
ALL YOU NEED TO DO
IS READ ACROSS AND
USE A STRAIGHT EDGE
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70 CELSIUS = FARENHEIT
= KELVIN
158
343
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180 FARENHEIT = CELSIUS
= KELVIN
82
355
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ABSOLUTE ZERO (ZERO DEGREESKELVIN)
NO KINETIC ENERGY
THE MOLECULES ARE NOT MOVING
Lowest possible temperature
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Quick Energy Review!
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REVIEW QUESTONS:
A
B
C
D
WHICH SKIIER HAS THE GREATEST
KINETIC ENERGY?
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WHICH SKIIER HAS THE GREATEST
POTENTIAL ENERGY?A
B
C
D
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DURING ENERGY CHANGES, IF ONE BODYIS LOSING ENERGY, THE OTHER IS _______ ENERGY:
THE WAVE LOSES
ENERGY: THE SAND
GAINS
ENERGY
Gaining
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THE WAVE LOSES
ENERGY: THE SAND
GAINS
ENERGY
DURING ENERGY CHANGES, IF ONE BODYIS LOSING ENERGY THE OTHER IS GAINING ENERGY:
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DURING ENERGY CHANGES
THE TOTAL ENERGY
REMAINS THE SAME
ENERGY ALWAYS FLOWS
FROM
HIGH TO LOW (source to sink)
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THE ENERGY WILL FLOW FROM:
THE FLAME TO THE
FINGER
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ICE
ENERGY WILL FLOW FROM
THE FINGER TO
THE ICE
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THE LIQUID
LOSES ENERGY
AS THE
ICE
GAINS ENERGY
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WHEN WILL THE EXCHANGE
OF ENERGY STOP?WHEN
EQUILIBRIUM
IS REACHED THE LIQUID AND
THE ICE REACH
THE SAME
TEMPERATURE
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The Affects of Air
Temperature
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HOTCOLD
Imagine two open containers of air:One is filled with hot airand the other is filled with cold air
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HOTCOLD
Which container has more kinetic energy?
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HOTCOLD
Which container has higher air pressure?
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HOTCOLD
Which container has greater density?
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Air molecule
HOTCOLD
Water molecule
Which container can hold more water?
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Air molecule Water molecule
HOTCOLD
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In summary: Hot air has more kinetic energy
hot air has less pressure hot air can hold more water
hot air is less dense hot air rises
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* caused by the weight of atmosphere pushing down
2. Air Pressure:
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As altitudeincreases
Pressuredecreases
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Altitude
Pressure
Indirect
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Temperature
Pressure
Indirect
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A barometermeasurespressure in inches of mercury or millibars
see reference table page 13
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Standard pressure is
1013.2 millibars or
29.92 inches of mercury
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30.65
Each notch is worth 1.0
1037.0
1038.0
1039.0
Each notch is worth 0.01
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Convert 1040.0 millibarsto inches of mercury
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30.71
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Atmospheric Pressure:
Effected by water vapor
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Water vapor is very _________ compared to dry air:
light
(Nitrogen is heavier than hydrogen and oxygen)
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SO:When water vapor is
added to dry air the air pressure___________decreases
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Pressure
Because the air is
lighter
Decreases in air that is full of water vapor
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Humidity
pressure
Indirect
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HOT:COLD:
•Heavier •more dense
•more pressure
•less dense , lighter
•less pressure
•holds more water
Summary
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What will happen? If you add water vapor to the inside of a container and seal it, what will happen?
SIT BACK AND WATCH!
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The Earth is always trying to achieve_______________equilibrium
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Energy is constantly being re-distributedflowing from _______to _______highlow
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How can we decreasepressure without changing our elevation?
Increase temperatureIncrease humidity
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Low pressure
Warmer and Wet
Cooler and Dry
High pressure
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Latitude…. Earth
Poles
EQUATOR
Temp:
pressure:
density:
humidity:
temp:
pressure:
density:
humidity:
highhighlow
highlowlow
high
low
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WIND:
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Winds are described by the direction they ___________Come from
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•Winds distribute energy•They blow from _______ pressure to______pressurehigh
low
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White lines are ISOBARS
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WINDS BLOW FROM HIGH TO LOW
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FASTESTWINDSOCCURWHERE THE ISOBARS ARE_________________Close together
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29.6
29.8 30.0N
W
S
E
NE WIND
FASTEST
SPEED
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29.629.8
30.0
N
W
S
E
SW WIND
FASTEST
SPEED
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N
W
S
EWinds blow
Toward
The center
30.0
29.6
29.8FASTEST
SPEED
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4. Humidity and CLOUD
FORMATION
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The Formation of Clouds
A. Define cloud:large group of H2O droplets suspended in air B. Steps involved in cloud formation: warm moist air rises expands cools condenses
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1. Describe the mass of air that would lead to cloud formation in terms of temperature, humidity, density
Warm Moist Low density
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2. The air will risebecause oflow density3. Describe what the air does
asit rises: expands cools condenses
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4. Clouds will form if this rising moist air
a. cools to the dew point temp.
b. has condensation nuclei available. (dust, pollutants etc..)
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C. Basic Cloud Types:
1. Cirrus: high and feathery (fair weather)2. Cumulus: white and puffy (fair weather)3. Stratus: covers the sky like a blanket (precipitation probable)
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Cirrus Clouds
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Cumulus clouds
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Cumulonimbus clouds
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Stratus clouds with fog
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D. Effects of aMountain Range:
OrographicEffect(adiabatic cooling)
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Wind
mountainMoistairrises
expands
CondensesDry air
Sinkscompresses
warms
cools
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1. The side of the mountain with the moist prevailing winds is called the
_____________ Summary:
Wind
Windward side
moist airrisesexpandscoolscondenses
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2. The air descends to the otherside of the mountain which is called the
______________________ Summary:
Wind
Leeward side
dry airsinkscompresseswarms
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D. Precipitation
A. Describe what causes precipitation:
Precipitation forms around Dust particles (pollutants) droplets combine (coalesce)become heavy
and fall
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B. Explain why precipitation cleans the atmosphere:
as precipitation forms around dust/pollutants…they are removed from theatmosphere as precipitation falls
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When the dew point temperature
and air temperature approach each other what happens to
the chance of precipitation and
why? The chance of precipitation increases because the air is more saturated
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Tempandmoisture
RiseorSink
Expand/Compress
CollisionsI nc./Decrease
K.E.I nc./Dec.
Cooling
Warming
E. Complete the chart below:
Warmmoist
Rise Expand DecreaseDecrease
Cool Sink CompressIncreaseIncrease
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Dew Point and Relative
Humidity!
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Dew Point TemperatureThe temperature at which the air is holding the ____________ amount of water. The air is _____________
Maximum
saturated
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Relative Humidity:The ratio of the amount of water vapor in the air, to the maximum amount it can hold. It is usually expressed as a __________. As the temperature increases, the maximum absolute humidity _____________ but the relative humidity will decrease
percentage
Stay the same,
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The dew point and relative humidity are determined by using an instrument called a _______________________
sling psychrometer
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The psychrometer has two thermometers, a dry bulb and a wet bulb. The psychrometer is whirled in the air so that evaporation will occur.
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The lower the moisture content of the air, the ________ evaporation will occur from the wet bulb and the wet bulb temperature will be _________
more
lowered
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Use your ESRT to fill in the chart…The answer the questions
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Do Now: Read the “Structure of the atmosphere notes” and answer questions 1 through 6 using your reference tables.
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Construct a Station Model Using the following Weather Data:Cloud cover: 50 %Air temp = 20°CAir pressure = 996 mbDew point temperature = 18 °C Wind speed 25 knotsWind direction SW
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Synoptic Weather Maps
Atmospheric variables are collected from thousands of weather stations around the world four times each day.
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1. Station Model Provides a summary of the current atmospheric conditions in an area.
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Additional symbols used on weather maps and station models
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• The circle represents the actual weather station at its location
• The shaded portion of the circle represents the % cloud.
• The line represents the direction the wind is coming from.
• The feathers represent the wind speed. Each whole feather is 10 knots and each half feather is 5 knots. 1 knot = 1.15 m/hr.
• The number in the upper left represents the current temperature in Fahrenheit degrees.
• The symbol * represents the present weather.
• The number to the left of present weather is visibility in miles.
• The bottom left number represents the dew point in degrees Fahrenheit.
• The top right number represents the barometric pressure in short hand millibars. 196 = 1019.6 millibars.
• The middle right number represents the barometric trend. A steady 1.9mb rise in the past 3 hours.
• Bottom right is the amount of precipitation in the last 6 hours
28
* 6 27
196
+1.9/
.25
Weather Station Models
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The Barometric Pressure on a Station Map is in code… The number 9 or 10 has been omitted from the front
![Page 124: Total Weather (in progress)](https://reader038.vdocuments.us/reader038/viewer/2022103000/556155dfd8b42a857d8b52a1/html5/thumbnails/124.jpg)
Rule for converting the code into
millibars:1. 887= ___________Because if the first digit is
5 or greater add _________ and place a decimal point before the last digit.
A 10 in front
1088.7
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Rule for converting the code into
millibars:2. 165= ___________Because if the first digit is
less than 5 add ________ and place a decimal point before the last digit.
a 9 in front
916.5
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Change the following to abbreviated form: 956.4:______________ 1014.3: _____________
564
143
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Change from abbreviated form: 964:______________ 126: _____________
996.4
1014.3
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Construct a Station Model Using the following Weather Data:Cloud cover: 50 %Air temp = 20°C = Air pressure = 996 mbDew point temperature = 18 °C Wind speed 25 knotsWind direction SW
68°F
68
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Construct a Station Model Using the following Weather Data:Cloud cover: 50 %Air temp = 20°C Air pressure = 996 mb =Dew point temperature = 18 °C Wind speed 25 knotsWind direction SW
68
9960
960
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Construct a Station Model Using the following Weather Data:Cloud cover: 50 %Air temp = 20°CAir pressure = 996 mbDew point temperature = 18 °C =64 °F Wind direction SW Wind speed 25 knots 68 960
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Construct a Station Model Using the following Weather Data:Cloud cover: 50 %Air temp = 20°CAir pressure = 996 mbDew point temperature = 18 °C =64 Wind direction SW Wind speed 25 knots 68 960
64
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Construct a Station Model Using the following Weather Data:Cloud cover: 50 %Air temp = 20°CAir pressure = 996 mbDew point temperature = 18 °C Wind direction SW Wind speed 25 knots 68 960
64
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Construct a Station Model Using the following Weather Data:Cloud cover: 50 %Air temp = 20°CAir pressure = 996 mbDew point temperature = 18 °C Wind direction SW Wind speed 25 knots 68 960
64
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Construct a Station Model Using the following Weather Data:Cloud cover: 50 %Air temp = 20°CAir pressure = 996 mbDew point temperature = 18 °C Wind direction SW Wind speed 25 knotsAdd sleet
68 960
64
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Construct a Station Model Using the following Weather Data:Cloud cover: 50 %Air temp = 20°CAir pressure = 996 mbDew point temperature = 18 °C Wind direction SW Wind speed 25 knotsAdd sleet
68 960
64
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Construct a Station Model Using the following Weather Data:Cloud cover: 50 %Air temp = 20°CAir pressure = 996 mbDew point temperature = 18 °C Wind direction SW Wind speed 25 knotsAdd Raina steady 1.9mbrise in the past3 hours
68 960
64
+1.9/
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Construct a Station Model Using the following Weather Data:75% cloudswinds from the N.W.wind speed 35 knotsair temperature 28F, dew point temp. 20Fvisibility 5 milesbarometric pressure 1032.5barometric trend 1.1 falling steadilypresent weather is snow
28 325
20
-1.1\5*
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5. The Greenhouse EFFECT
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Video:The Greenhouse Effect
Handout: label the diagrams
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THE GREENHOUSE EFFECT
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THE GREENHOUSE EFFECT
Energy absorbed
HEAT ISTRAPPED BY
THE GLASS OFTHE GREENHOUSE
Incoming isShort wave
outgoing isLonger wave
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What are the Greenhouse gases?
CO2
H20 VAPOR
METHANE GAS
INFRARED
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The Earth Receives Energy from two sources:
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SUN
![Page 150: Total Weather (in progress)](https://reader038.vdocuments.us/reader038/viewer/2022103000/556155dfd8b42a857d8b52a1/html5/thumbnails/150.jpg)
Radioactive
Energy
CORE
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All matter radiates some__________________________ElectromagneticEnergy
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The sun emits energy in _____ wavelengthsof the electromagneticspectrum
ALL
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ELECTROMAGNETIC SPECTRUM:REFERENCE TABLE PAGE 14
Increasingwavelength
Violet Blue Green Yellow Orange Red
visible
10-10 10-8 10-6 10-4 10-2 10 0 10 2 10 4
gamma X rayUltra violet
Infrared
Microwaves
Radio waves
Decreasingwavelength
![Page 154: Total Weather (in progress)](https://reader038.vdocuments.us/reader038/viewer/2022103000/556155dfd8b42a857d8b52a1/html5/thumbnails/154.jpg)
The Earth radiates_____________ (heat)
infrared
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Increasingwavelength
Violet Blue Green Yellow Orange Red
visible
10-10 10-8 10-6 10-4 10-2 10 0 10 2 10 4
gamma X rayUltra violet
Infrared
Microwaves
Radio waves
Decreasingwavelength
Each type of energy differs
in its __________wavelength
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Increasingwavelength
Violet Blue Green Yellow Orange Red
visible
10-10 10-8 10-6 10-4 10-2 10 0 10 2 10 4
gamma X rayUltra violet
Infrared
Microwaves
Radio waves
Decreasingwavelength
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ELECTROMAGNETIC SPECTRUM:REFERENCE TABLE PAGE 14
Increasingwavelength
Violet Blue Green Yellow Orange Red
visible
10-10 10-8 10-6 10-4 10-2 10 0 10 2 10 4
gamma X rayUltra violet
Infrared
Microwaves
Radio waves
Decreasingwavelength
![Page 158: Total Weather (in progress)](https://reader038.vdocuments.us/reader038/viewer/2022103000/556155dfd8b42a857d8b52a1/html5/thumbnails/158.jpg)
SHORT WAVE LENGTHS ARE: MOSTLY ABSORBED byTHE OZONE
OZONE
GAMMA
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ELECTROMAGNETIC SPECTRUM:REFERENCE TABLE PAGE 14
Increasingwavelength
Violet Blue Green Yellow Orange Red
visible
10-10 10-8 10-6 10-4 10-2 10 0 10 2 10 4
gamma X rayUltra violet
Infrared
Microwaves
Radio waves
Decreasingwavelength
![Page 160: Total Weather (in progress)](https://reader038.vdocuments.us/reader038/viewer/2022103000/556155dfd8b42a857d8b52a1/html5/thumbnails/160.jpg)
SHORT WAVE LENGTHS ARE MOSTLYABSORBED by THE OZONE IN THE STRATOSPHERE
gamma,
OZONE
X-RAYS
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ELECTROMAGNETIC SPECTRUM:REFERENCE TABLE PAGE 14
Increasingwavelength
Violet Blue Green Yellow Orange Red
visible
10-10 10-8 10-6 10-4 10-2 10 0 10 2 10 4
gamma X rayUltra violet
Infrared
Microwaves
Radio waves
Decreasingwavelength
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SHORT WAVE LENGTHS ARE MOSTLYABSORBED by THE OZONE IN THE STRATOSPHERE gamma, x-rays,
OZONE
UV
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ELECTROMAGNETIC SPECTRUM:REFERENCE TABLE PAGE 14
Increasingwavelength
Violet Blue Green Yellow Orange Red
visible
10-10 10-8 10-6 10-4 10-2 10 0 10 2 10 4
gamma X rayUltra violet
Infrared
Microwaves
Radio waves
Decreasingwavelength
![Page 164: Total Weather (in progress)](https://reader038.vdocuments.us/reader038/viewer/2022103000/556155dfd8b42a857d8b52a1/html5/thumbnails/164.jpg)
OZONE
VISIBLE LIGHT :PASSES THROUGHTHE ATMOSPHEREWITH THE GREATEST INTENSITY
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ELECTROMAGNETIC SPECTRUM:REFERENCE TABLE PAGE 14
Increasingwavelength
Violet Blue Green Yellow Orange Red
visible
10-10 10-8 10-6 10-4 10-2 10 0 10 2 10 4
gamma X rayUltra violet
Infrared
Microwaves
Radio waves
Decreasingwavelength
![Page 167: Total Weather (in progress)](https://reader038.vdocuments.us/reader038/viewer/2022103000/556155dfd8b42a857d8b52a1/html5/thumbnails/167.jpg)
![Page 168: Total Weather (in progress)](https://reader038.vdocuments.us/reader038/viewer/2022103000/556155dfd8b42a857d8b52a1/html5/thumbnails/168.jpg)
Increasingwavelength
Violet Blue Green Yellow Orange Red
visible
10-10 10-8 10-6 10-4 10-2 10 0 10 2 10 4
gamma X rayUltra violet
Infrared
Microwaves
Radio waves
Decreasingwavelength
![Page 169: Total Weather (in progress)](https://reader038.vdocuments.us/reader038/viewer/2022103000/556155dfd8b42a857d8b52a1/html5/thumbnails/169.jpg)
Earth re-radiates(heat)
Sun emits all
wavelengthsinfrared
![Page 170: Total Weather (in progress)](https://reader038.vdocuments.us/reader038/viewer/2022103000/556155dfd8b42a857d8b52a1/html5/thumbnails/170.jpg)
Interactions between Electromagnetic Energy & The Environment:
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1.
2.
3.
4.
5.
ABSORBTION
REFLECTION
SCATTERING
REFRACTION
TRANSMISSION
- UV ABSORBED by OZONE IN STRATOSPHEREINFRARED ABSORBED BY
- BY CLOUDS, ICE, SNOW & WATER
- BY AEROSOLS, WATER DROPLETS, ICE CRYSTALS,AIR POLLUTANTS, DUST, POLLEN
LIGHT IS BENT AS ITMOVES THROUGH VARIED DENSITIES
WHEN ENERGY PASSES THROUGH A MEDIUM
CO2&H2O vapor
methane, nitrous oxide
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1. ABSORPTION
2. REFLECTION
3.SCATTERING
4. REFRACTION
5. TRANSMISSION
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Less than ______of the incoming solar radiationis receivedby the Earth’s surface
half
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Surface properties of the Earth and Absorption of Energy:
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Color:
Texture:
Reflection vs. Absorption & Radiation
Rough surface absorbssmooth surface reflects
Light (white) reflectsdark (black) absorbs
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ELECTROMAGNETIC SPECTRUM:LAB
Increasingwavelength
Violet Blue Green Yellow Orange Red
visible
10-10 10-8 10-6 10-4 10-2 10 0 10 2 10 4
gamma X rayUltra violet
Infrared
Microwaves
Radio waves
Decreasingwavelength
![Page 177: Total Weather (in progress)](https://reader038.vdocuments.us/reader038/viewer/2022103000/556155dfd8b42a857d8b52a1/html5/thumbnails/177.jpg)
6. How does tooMuch contribute to Global warming?
CO2
H20 VAPOR
METHANE GAS
INFRARED
CO2
CO2 absorbsinfrared
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I. Air Masses-
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A. Air Mass: large amount of air with the same temperature and humidity
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B. List the characteristics that an air mass picks up from its place of origin: 1.
2. humidity
temperature
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Continental
Maritime
Tropical
Polar
Arctic
Symbol Origin Describe the Air Mass
c Over Land Dry - Heavier
m Over Water Moist - Lighter
T Low Latitudes
Warm - Less Dense
P High Latitudes
Cool - More Dense
A Very High Latitudes
Cold - Very Dense
C. Types of Air Masses:
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Symbol Name and Description Describe the Air Mass
cT
mT
cP
mP
cA
Continental Tropical
Maritime Tropical
Continental Polar
Maritime Polar
Continental Arctic
Dry and Warm
Moist and Warm
Dry and Cool
Moist and Cool
Dry and Very Cold
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mP cPcP
mP
mTcT
mT
E. Types of Air Masses:
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Local windCaused by the unequal heating of land and water.This creates density difference.Draw the diagrams in your notes.
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Planetary Wind Belts
Reference TablesPage 14
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I. Planetary wind Pattern If The Earth Didn’t Rotate
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Cold air would_______ at the poles and flow along the surface of the Earth toward the__________
sink
equator
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Air would then warm atthe equator and_____________(due to ___________ density) and flow back to the_____________
rise
poleslow
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this would create two great _________ cells over the Earthconvection
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II. Earth’s Rotation Effect On Wind Patterns:
convection
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___________________ effect causesthe winds to deflect to the __________ in theNorthern Hemisphere
Coriolis (Rotation)
right
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Intended
Actual dueTo coriolis(rotation)
Right in the Northern Hemisphere
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Intended
Actual dueTo coriolis(rotation)
Left in the Southern Hemisphere
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And to the __________ in theSouthernHemisphereLeft
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two convection cells tobreak into ________convection cells
6
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Planetary Wind and Moisture Belts in the Troposphere
Wet 0°
Dry 30°N
Dry 30°S
Wet
Wet
Dry
Dry
60°N
60°S
NE
N
W
S
ESE
NW
SW
SE
NE
Doldrums
Horse latitudes
Horse latitudes
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Use your ReferenceTables Page 14 to describe the wind for the following latitudes:
1. 42ºN _______2. 23º½N _______3. 23º½ S _______4. 70º N _____
SWNESENE
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Wet 0°
Dry 30°N
Dry 30°S
Wet
Wet
Dry
Dry
60°N
60°S
NE
N
W
S
ESE
NW
SW
SE
NE
5. Which planetary wind belt is New York State Located?
SW
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6. Complete the following:
The Coriolis Effect causes winds to curve to the
__________________ in the N. Hemisphere
right
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H L
To Summarize:In high pressure winds blow In low pressure winds blow
In or Out In or OutClockwise or clockwisecounterclockwise or counter clockwise
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The arrows show the wind direction: Is this a High or low pressure system?
Does it carry moist or dry air?
L
moist
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Practice Questions:
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N
W
S
E
30.0
29.6
29.8
Is this a high or low Pressure system?
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N
W
S
E
30.00
29.60
29.80
What is the pressure at the inner isobar onThis map?
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N
W
S
E
30.0
29.6
29.8
Is this a high or low Pressure system?
High
H
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N
W
S
E
30.00
29.60
29.80
What is the pressure at the inner isobar onThis map?
H
30.20
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Which direction do winds curve in theNorthern Hemisphere?
rightWhy?
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Earth’s Rotation
Coriolis Effect
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Is this clockwise or counter clockwise?
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The arrows show the wind direction: Is this a High or Low pressure system?
H
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Does this carry moistOr dry air?
HDry
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What planetary windbelt do we live in?
SW