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Tell Me Why: We Need ‘Normals’ and Long-term Trends

Tell Me Why: We Need Normals

What is “normal” when it comes to temperature and precipitation? The definition not only varies with location and time, but it changes from decade to decade. And it’s those decadal trends that interest climate scientists like Anthony Arguez. He explains the importance of “normals” in this version of Tell Me Why, a NOAA-funded series that explains key climate concepts.

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Tell Me Why: The Climate Extremes Index Matters

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