![Page 1: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/1.jpg)
What factors influence weather?
The water cycle, currents and air streams, layers of the
atmosphere.
![Page 2: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/2.jpg)
Maine- Seasons• Maine has 4 distinct seasons.
• Spring lasts from March through June
• Summer is from June through August
• Fall is from September through November
• Winter is from December through February
![Page 3: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/3.jpg)
Seasonal Variation• There is a huge variation in temperature based on season. Precipitation is constant.
![Page 4: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/4.jpg)
Winter• Cold temp. (average below zero)• Precipitation comes as snow, ice
![Page 5: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/5.jpg)
SpringWarming weather sparks growth, snow melts, precipitation switches to rain or sleet
![Page 6: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/6.jpg)
Summer• Hot weather
(average temp. in the 30s)
• Precipitation comes as heavy rains
![Page 7: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/7.jpg)
Fall• Cooling
temperatures• Storms often blow
up the coast• Plants pull sap back
into their roots, causing a change in color.
![Page 8: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/8.jpg)
Why is this?
![Page 9: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/9.jpg)
Indonesia - SeasonsWhile Maine has 4 seasons, Indonesia has only 2. The wet season runs from about November through April, while the dry season runs from May to October... or at least it used to.
![Page 10: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/10.jpg)
Seasonal VariationThere is very little variation in temperature, but a huge seasonal variation in rainfall.
![Page 11: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/11.jpg)
Why is this?
![Page 12: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/12.jpg)
Review: The Water Cycle
![Page 13: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/13.jpg)
Review: Climate ‘Cells’• Notice that each band of latitude has a cell, and these cells have different names.
• You need to know what actions (wind, rain) are taking place, but don’t worry about the names.
![Page 14: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/14.jpg)
Maine - location• Maine is in the north east US and on the coast
• The weather is temperate, and it is under the updraft of the northern Ferrell Cell (rising air = lots of precipitation)
![Page 15: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/15.jpg)
Indonesia- Location
Jakarta is in central Indonesia and on the coast.
The weather is tropical, but because cells shift, Jakarta is sometimes in the updraft of the tropical Hadley cells, and sometimes in the downdraft.
(Falling air = dry)
![Page 16: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/16.jpg)
New Information: Wind Patterns
• Each cell has a wind flow pattern. These influence the weather.
![Page 17: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/17.jpg)
Review: Climate Map
![Page 18: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/18.jpg)
The same information in a different way:
These wind belts shift north between May and September, and south between October and April. What is the effect on Indonesia? What weather pattern does that explain?
![Page 19: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/19.jpg)
Review: Land and Sea Breezes• Land heats and cools
faster than water. • The oceans (or large
lakes) act as ‘banks’ of both moisture and temperature.
• During the day, the sun warms the land. The hot air rises. Cool air from the sea flows over the land. At night, this reverses. Air over the land is cooler and over the sea is warmer… so sea air rises and land air flows out to sea.
![Page 20: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/20.jpg)
Back to land masses…• Examine the top two maps.
• Remember what you know about seasonal wind patterns in Indonesia, and shore/sea breezes.
• What Asian weather pattern can we explain?
![Page 21: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/21.jpg)
Ocean Currents: Surface• Remember the
flow of wind currents from earlier?
• Because winds at different bands of latitude go in opposite directions, ocean currents are circular.
Surface currents in the ocean are created by wind.
![Page 22: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/22.jpg)
Ocean Currents: Deep• Deeper ocean
currents are created by differences in ocean temperature.
• Just like with atmospheric cells, warm water rises and cold water sinks.
• This creates ocean currents.
![Page 23: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/23.jpg)
Effect on Climate• Land areas near warm ocean currents have warmer climates.
• Land areas near cold ocean currents have colder climates.
![Page 24: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/24.jpg)
So that explains climate… what about weather?
• The same principles apply.
• Warm air rises, depositing moisture. Cool air sinks.
• Differences in surface area cause wind to flow from place to place.
![Page 25: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/25.jpg)
Weather: High pressure systems
• High pressure is created when cooling air falls back to earth.
• Air is pushed out of the way by the cool, dry air, creating wind.
• There is no moisture in the falling air, so weather is clear and cool.
• High pressure systems are fair weather systems
![Page 26: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/26.jpg)
Weather continued: Low Pressure Systems
• Low pressure is created when warm air rises. This causes rain, as the moisture condenses out.
• Nearby air fills in the gap left by warm rising air. This causes wind.
• Low pressure systems are storm systems.
![Page 27: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/27.jpg)
What happens as warm air
rises?• The types of storms and
clouds that we see are created by what happens to warm, wet air as it rises.
• These effects have to do with the motion of air at the surface of the earth, but also the conditions of the atmosphere.
![Page 28: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/28.jpg)
Layers of the Atmosphere
• Only the first few layers of the atmosphere contain weather
![Page 29: What factors influence weather?mslexiehumanities.weebly.com/.../8/20787140/weather... · Back to land masses… •Examine the top two maps. •Remember what you know about seasonal](https://reader035.vdocument.in/reader035/viewer/2022070721/5ee1fb96ad6a402d666ca7cf/html5/thumbnails/29.jpg)
Storm Clouds• You can tell what weather is coming from the shape of clouds.
http://www.wikihow.com/Forecast-the-Weather-Using-Clouds