phases of water and phase changes of water. Water vapor is extremely important in the atmosphere for many reasons. A few of those reasons include Water vapor transforms into both liquid and solid cloud particles that grow and fall to Earth as precipitation. When water vapor condenses in the formation of clouds‚ large amounts of heat - calledlatent heatis released into the atmosphere. Latent heat is an important source of energy in the development of thunderstorms and hurricanes. Water vapor strongly
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1. Assume that you have 100 years of continuous temperature records from your local weather service office. Discuss some of the difficulties you might have trying to determine whether average temperatures have increased during this period. According to our book‚ it is difficult to measure an average temperature change over a specified period because it is possible that the weather station has moved‚ techniques for measuring temperature can change‚ and with an influx of people in urban areas‚ the
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areas contain 10 times the amount of condensation nuclei than rural areas. The lack of vegetation in urban areas reduces the amount of moisture in the air. This is intensified by drains and sewers‚ which remove surface water quickly. On average‚ precipitation rates are 5-10% higher in urban areas than in rural areas. The main reason for this trend is that urban areas tend to make more condensation nuclei; the tiny particles are
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humidity‚ cloud cover‚ etc) Climate= the average weather over a long period of time. (long-term weather data) What is the difference between satellites and radar? Satellites view clouds from space Radar view precipitation from the ground What is Doppler radar? Can sense motion of precipitation particles toward/away from radar How is wind direction defined? The direction from which the wind is blowing (a north wind blows form the north‚ to the south) How do winds blow around high and low pressure
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very cold. Stratus- gray sheets that cover the sky‚ may produce steady drizzle or mist but not hard rain. Nimbostratus- thick and dark bring steady rain or snow Stratocumulus- rows of large low puffs that may be white or gray‚ rarely bring precipitation. Cumulus- resemble white cotton and have towering tops. May produce precip on hot summer days Cumulonimbus- tall dark associated with lightening and thunder Fog- located near the ground when humid air cools below its dew point. Radiation
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Weather “ Weather is the condition of the climate in a particular place at a particular time.” The weather is all around us‚ all the time. It is an important part of our lives and one that we cannot control. Instead the weather often controls how and where we live‚ what we do‚ what we wear and what we eat. Someone who studies the weather is called a meteorologist. Weather predictions are made by forecasters who you see on television. DIFFERENCE BETWEEN WEATHER AND CLIMATE Weather
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vapor and air pressure‚ density of the vapor and air‚ or by the actual mass of the vapor and air. Relative humidity is usually expressed in per cent and abbreviated by φ or RH. Precipitation is when moisture in clouds condenses and become too heavy to stay in the air so they fall to earth as precipitation in the forms of hail‚ snow‚ sleet‚ rain‚ freezing rain. Rain develops when the growing cloud droplets become too heavy and fall to earth. Hail is when a large frozen raindrop which falls
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an average of less than 15mm of rain per annum and sometimes receive no rain. Rainfall is as unpredictable as it is rare. When rain does occur it usually comes in the form of short‚ heavy downpours ‚ which may affect small areas. Very limited precipitation can also occur in the forms of dew or fog. Sudden drops in temperature can cause night dews in parts of the Sahara. Fog sometimes brings limited moisture to narrow coastal areas were cold ocean currents flow offshore. Such fogs occur regularly
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Drought in Australia Definition: A drought is a prolonged‚ abnormally dry period when there is not enough water for users’ normal needs. Drought is not simply low rainfall; if it was‚ much of inland Australia would be in almost perpetual drought. Because people use water in so many different ways‚ there is no universal definition of drought. Drought occurs because rains are unreliable and in some years the ITCZ (Inner Tropical Convergence Zone = area of rainfall) may not move so far north.
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between weather and climate is that the weather is in one place and the climate is the location 7 Main components of the atmosphere: Variables that define what the weather is! 1. Pressure 2. Temperature 3. Wind 4. Humidity 5. Cloud Cover 6. Precipitation type and amount 7. Visibility (distance one can see horizontally) Two types of measurements: examples The two types of measurements are Contact Measurements and Remote Sensing. Location of Chicago’s National Weather Service and Doppler Radar
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