NASA to Explore Volcanoes, Coral Reefs, and Snowpacks

NASA's Earth expeditions have been studying various global phenomena, including coral reefs, glaciers, and air quality. This year, three new missions have been introduced: the Hesperian mission in Hawaii focuses on volcanic gas emissions and coral reef health; the PACE mission in the Pacific studies phytoplankton and their role in the marine carbon cycle; and the SnowEx mission in Colorado examines water storage in snow-covered regions. These missions aim to complement NASA's satellite data to better understand Earth's changes.

How do the missions complement NASA satellite data?

What pressing questions about our planet are these missions trying to answer?