Presentation on theme: "Learning Log We have been talking about weather, but we also hear people talking about climate change. In a complete sentence describe what you think the."— Presentation transcript:
1 Learning LogWe have been talking about weather, but we also hear people talking about climate change. In a complete sentence describe what you think the difference between weather and climate are.Essential Question:What is climate and how does it differ from the Weather?
3 What is Climate? What is Climatology? The long-term weather patterns of an areaWhat is Climatology?The study of earth’s climate and thefactors that affect past, present and futureclimatic changes.
4 What defines a Climate?Average temperature annuallyAverage amount of precipitation annually
5 Climate also describes… WindOther weather variablesNormals – standard values for a location; set over a period of 30 yrsNormals- gathered data averaged on a monthly or annual basis
6 Climate ZONESTropical Zone- area 23.5 degrees north and south of the equatorTemperate Zone- area 23.5 degrees and 66.5 degrees north and south of the equatorPolar Zone- area located from 66.5 degrees north and south of the equator to the polesThere are three basic climate zones.Tropical climate zone. This is an area that falls between the Tropic of Cancer and Tropic of Capricorn. This area has hot climates all year long.Temperate Climate Zone - These areas are between the Tropic of Cancer and the Arctic Circle and between the Tropic of Capricorn and the Antarctic Circle. The climate in these areas is warm in the summer and cold in the winter.Polar Climate Zone - These areas are at either pole below the Antarctic Circle and above the Arctic Circle. The winters are very cold and the summers cool to cold.
8 Climatic VariationsLatitude-Increasing latitude, cooler climate (climate zones)Air Masses-Movement and interactions; form over land/waterVegetation- Influences how much of the sun’s energy is absorbed and how much is released
9 Topography- Topographic features (land features) such as mountains play an important role in the amount of precipitation that falls over an areaElevation- Higher the elevation, colder the air, and colder the climateWater bodies- temperature of the water body influences the air above itLeeward sideWindward side
11 The Koppen Climate Classification System The Koppen Climate Classification System uses mean monthly and annual values of temperature,precipitation, and vegetation to classify climate.The Five Principal ClimatesTropical ClimatesDry ClimatesMild ClimatesContinental ClimatesPolar Climates
12 Tropical Climates High Temperatures (64 oF or higher) all year Lots of rainExamples: Miami and Borneo
13 Dry Climates Little rain and huge daily Temp. ranges Mohave and Sonoran DesertsGobi DesertSahara Desert
14 Mild Climates Warm dry summers and cool wet winters Shanghai, China Jacksonville, NC
15 Continental ClimatesInterior regions with average precipitation and wide seasonal Temp. variationsEx. Fairbanks Alaska and Des Moines Iowa
16 Polar ClimatesPermanent iceExample: The North and South poles
19 Assignment: Creating and Comparing Climatographs Complete the exercise that will be handed out.You may work with a partner, but you each must complete and turn in your own graph and answer sheet.
20 Questions about Graphs: What was the hottest month in Jacksonville? How much precipitation was received that month?With air masses and humidity in mind, why do you think Jacksonville receives more precipitation than Raleigh?Describe differences you noticed between the climates of Jacksonville and Raleigh. What do you think may have caused this difference? How about between Jacksonville and Asheville?
21 What are MICROCLIMATES? Microclimates localized climates that differ from the main regional climate.Heat islands create microclimatesIn the example to the right, which shows winter temperatures in Washington, D.C., the buildings and paved surfaces of the city create a microclimate. The temperature in the center of the city is –0.6ºC, nearly 3ºC warmer than temperatures in some parts of the surrounding area.
22 Climatic Changes Climate Change and Extreme Weather The work of climatologists has found evidence to suggest that only a limited number of factors are primarily responsible for most of the past episodes of climate change on the Earth. These factors include:Variations in the Earth's orbital characteristics.Atmospheric carbon dioxide variations.Volcanic eruptionsVariations in solar output.Climate Change and Extreme Weather
23 Long Term Climatic Changes Ice agesperiods where the average global temperatures decreased by an estimated 5°Cextensive glacial coverage.
24 Global Warming Rise in global temperatures. Why? Levels of greenhouse gases are increasing
25 Short Term Climatic Changes Seasons-short-term periods of climatic change caused by:the regular variations in daylight, temperature, and weather patterns
26 El NinoEl Nino is a warm ocean current that occasionally develops off the western coast of South America that causes many short-term climatic changesEl Nino brings stormy weather to areas that are normally dry and drought conditions to areas that are normally wet.
27 Changes in Earth’s climate are also caused by Natural Events such as: variations in solar activitychanges in Earth’s tilt and orbitvolcanic eruptions.
28 Answer the essential question under your learning log entry.