Start Date: End Date: Published Date Data Date
Data acquired September 25, 2000 2 MB - MOV
Data acquired September 25, 2000 9 MB - MOV
Data acquired September 25, 2000 204 MB - MOV
Soil moisture plays an important role in preventing or prolonging summer droughts. When the ground is wet, water evaporates as the day warms up. The warm, moist air rises until it encounters colder air high above the Earth's surface, leading to afternoon rainshowers. The water remains in the ground through the cool night, and the cycle repeats the next day. For more information, see Dry Times in North America.
Susan Byrne, NASA GSFC
Published September 25, 2000 Data acquired September 25, 2000