FACT #1: Snow covers 30
percent of land on Earth.
FACT #2: More than 1.2
billion people rely on melt from snowpack and glaciers.
FACT #3: Snowmelt is the main
source of water for 60 million Americans.
FACT #4: Since 1967, 1
million square miles of spring snow cover has disappeared from the Northern
Hemisphere – an area the size of the southwestern U.S.
FACT #5: 70 percent of water
from the snow-fed San Joaquin River irrigates California’s Central Valley.
FACT #6: NASA’s Global
Precipitation Measurement mission observes falling snow, even at the tops of
Measuring how much water is
in a snowpack is not easy. Scientists are investigating the best combination of
sensors for different terrains. More accurate snow measurements will help
scientists and decision makers better understand our world’s water supply and
better predict floods and droughts.
follow scientists in the field studying snow, follow #SnowEx on Twitter and