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Temperature Measurement. Thermometer. Air Temperature Data. Daily Mean Daily Range. Monthly Mean. Annual Mean Annual Range. Normal. Temp. time series: temp at one place over time. Salt Lake City Temperatures 2004 – Observed , Normals , Records. - PowerPoint PPT Presentation
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Temperature Measurement
Thermometer
Air Temperature Data
Daily MeanDaily Range
Monthly Mean
Annual MeanAnnual Range
Normal
Salt Lake City Temperatures 2004 – Observed, Normals, Records
Temp. time
series: temp at
one place over time
What Controls Temperatures at a Particular Location?
• Latitude• Altitude• Nearby water (especially oceans)
• Ocean currents• Position relative to prevaling winds• Mountains isolate water effects
• Cloud cover (and albedo)
Latitude
Sun Angles at Different Latitudes
Altitude
Guayaquil: sealevel
Quito: 9200 ft
Hidden Peak, Snowbird
Alt = 11,000’
High = 32oF
North Provo
Alt = 4600’
High = 47oF
0
10
20
30
40
50
60
70
80
90
100
jan feb mar april may june july aug sept oct nov dec
Monthly average high & low temps for Sacramento (red) and San Francisco (black) California
Oceans (water) Moderate Temps of Coastal Areas
SacramentoSacramentoSan FranciscoSan Francisco
Coasts and prevailing wind direction
Ocean Currents
Geographic Position
Mountains
Fog in Salt Lake ValleyFog in Salt Lake Valley
Effects ofInversion &
Cloud Cover in SLC Area 1/20 –
1/27/05
Alta Base 8800’47oF Highs
Olympus Cove 5600’29 – 32oF Highs
Sugarhouse 4400’32 – 33oF Highs
Cloud Cover
World Distribution of TemperaturesAnnual Range
(highest monthly ave. minus lowest monthly ave.)
World Distribution of TemperaturesJanuary Means
World Distribution of TemperaturesJuly Means
Daily Variations in Air Temperature
Maximum & Minimum Thermometers
Thermograph
Temperature Scales
Wind-Chill Factor
Chapter 3
END
Land & Water
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