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Elements of Weather
Measuring Weather
What are the Basic Elementsof Weather & Climate
(go outside and list 6)
Wind: speed and direction
Temperature: of air
Humidity
Clouds: type and amount
Precipitation: type and amount
Air Pressure
Measured on a regular (daily) basis. They are
inter-related:Change in one produces a change in the others
Temperature
Humidity
CLOUDS
Precipitation
Wind and Air Pressure:
Which year had the greatest number of billion $ weather disasters? _______How many events occurred that year? ________In what year was the damages amount the greatest? ___________
Page 7
Timeline
Read “Observing the Atmosphere” on pages 8-10
construct a timeline of the different instruments used
to discover the elements of the atmosphere and the scientists that invented them.
Automated Surface Observing System ASOS Joint program between the National Weather
Service (NWS), the Federal Aviation Administration (FAA), and the Department of Defense (DOD). ASOS detects significant changes 24/7
,Measures:• Sky condition: up to 12,000 feet • Visibility (to at least 10 statute miles) • Precipitation: type and intensity • Obstructions to vision: fog, haze • Air Pressure: sea-level and local altitude• Ambient temperature, dew point temp.• Wind: direction, speed and character
Weather Measuring Instruments on the roof of OHS
Exploring the Atmosphere Using Balloons
http://www.youtube.com/watch?v=jGQWUFEMxT8&feature=related&safety_mode=true&persist_safety_mode=1
RadarImaging
Satellite Imaging
Monitoring Earth from Space
Rainfall in Malaysia
Hurricane Dennis
http://www.weather.gov/
1. How do scientists observe and measure the atmosphere?
2. What are the Earth’s four spheres and how do they interact to determine weather and climate?
3. Define a system and distinguish between and open and closed systems.
4. Define a feedback mechanism and distinguish between positive and negative feedback mechanisms.
Today’s Essential Questions: