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How does weather differ from climate?
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Weather forecasting
Doppler radars, such as this one operated by the U.S. National Weather Service at New Underwood, South Dakota, extract the Doppler frequency shift of the echo produced by a moving target by noting how much the frequency of the received signal differs from the frequency of the signal that was transmitted.
The primary difference between weather and climate is the duration over which atmospheric conditions are measured.1
- Weather refers to the state of the atmosphere at a specific place over a short period, such as hours or days. It involves phenomena like temperature, humidity, precipitation, wind, and atmospheric pressure. Weather is highly variable and can change from moment to moment.123
- Climate describes the long-term synthesis of these atmospheric conditions for a given region, typically observed over spans of 30 years or more. Rather than just an "average," climate encompasses the full range of variability, including extreme values and the frequency of specific occurrences.123
To use an analogy, if weather is like a single inning in a baseball game, climate represents the entire game. While weather forecasting relies on current measurements to predict short-term changes, climate provides a broader, more stable understanding of regional atmospheric behavior.132