Every day thousands of amateur weather observers report data to their governments, as do a lot of experts aboard commercial planes in the sky and on ships at sea. Every day, twice a day, almost nine hundred weather balloons are released from nine hundred different spots on the globe, ninety-two of them by the U.S. government. A half-dozen countries, including the United States, deploy thousands of buoys to collect weather from the ocean surface. Then there’s the data collected by billion-dollar satellites and fancy radar stations—in the United States alone, the National Weather Service
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