How do weather observations become climate data?

A. the temperatures that happen during one season are recorded daily

B. weather is recorded over a few weeks in one area

C. weather conditions are measured at thousands of locations every day for 30 or more years

D. air pressure, temperature, humidity, wind speed and direction are recorded for a specific area

Explanation:

Millions of weather observations are recorded each day throughout the world. To document the weather and climate several human observers and automated weather stations are used.

The Cooperative Observer Program (COOP) does accurate observations across the country with scientific instruments to measure temperature, evaporation, rainfall, and snow depth.

Each day the COOP observers follow a uniform procedure to validate their instruments and record their data.

The decision makers for cities and towns depend on accurate graphs and maps to help them in planning for different extreme weather events.

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