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| The state of the atmosphere at a specific time and with respect to its effect on life and human activities. |
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| The historical record and description of average daily and in seasonal weather events that help describe a region. Statistics are generally drawn over several decades. |
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| The location north or south in reference to the equator, which is designated at zero (0) degrees. Parallel lines that circle the globe both north and south of the equator. |
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| The location east or west in reference to the Prime Meridian, which is designated as zero (0) degrees longitude. |
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| In meteorology, the measure of a height of an airborne object in respect to a constant pressure surface or above mean sea level. |
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| Any and all forms of water, liquid or solid, that falls from clouds and reaches the ground. |
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| An instrument used for measuring temperature. The different scales used in meteorology are Celsius, Fahrenheit, and Kelvin or Absolute. |
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| The measure of molecular motion or the degree of heat of a substance. It is measured on an arbitrary scale from absolute zero, where the molecules theoretically stop moving. |
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| The amount of water vapor in the air. It is often confused with relative humidity or dew point. |
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| The temperature to which air must be cooled at a constant pressure to become saturated. |
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| Precipitation in the form of liquid water droplets greater than 0.5 mm. If widely scattered, the drop size may be smaller |
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| Also known as ice pellets, it is winter precipitation in the form of small bits or pellets of ice that rebound after striking the ground or any other hard surface. |
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| Precipitation that originates in convective clouds, such as cumulonimbus, in the form of balls or irregular pieces of ice, which comes in different shapes and sizes. |
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| A type of humidity that considers the ratio of the actual vapor pressure of the air to the saturation vapor pressure. |
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| A visible collection of minute particle matter, such as water droplets and/or ice crystals, in the free air |
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| A visible aggregate of minute water droplets suspended in the atmosphere at or near the surface of the earth, reducing horizontal visibility to less than 5/8 statute miles |
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