A deluge of climate data from a world in flux has scientists scrambling to find ways to store, analyze and preserve vast and unprecedented amounts of information about the effects of rising global temperatures.

Earth’s future may depend in part on whether their efforts measure up.

For decades, scientists working to predict changes in the climate relied mostly on calculations involving simple laws of physics and chemistry but little data from the real world. But with temperatures world-wide continuing to rise—and with data-collection techniques and technologies continuing to advance—scientists now rely on meticulous measurements of temperatures, ocean currents, soil moisture, air quality, cloud cover and hundreds of other phenomena on Earth and in its atmosphere.

Reliable, readily available data is of critical importance to governments working to set policy and monitor compliance with international climate pacts, as well as to local authorities trying to help their communities adapt to unusual weather patterns or rising seas.

“When you are trying to develop long-term environmental records, including climate records, consistent measurement is incredibly valuable,” says Kevin Murphy, who as NASA’s chief science data officer oversees an archive of Earth observation data used by 3.9 million people last year. “It’s irreplaceable data.”

And with ever-rising numbers of sensor-studded satellites, aircraft, ocean buoys and the like, there’s more data all the time. Over the next decade, officials managing the main U.S. repositories of climate-related information expect their archives’ total volume to grow from about 83 petabytes today to more than 650 petabytes. One petabyte of digital memory can hold thousands of feature-length movies, with 650 enough to hold the contents of the Library of Congress 30 times over.