Different satellite-based metrics for global vegetation coverage tell complementary, but not identical, stories.
satellites
Posted inScience Updates
Earth Observations Inform Cities’ Operations and Planning
Rio de Janeiro, Brazil, and Chicago, Ill., are using NASA Earth observations to map, monitor, and forecast water and air quality, urban heat island effects, landslide risks, and more.
Posted inScience Updates
Mapping Vegetation Health Around the World
A new spaceborne sensor monitors Earth’s surface temperature at a resolution higher than ever before, providing information on ecosystem responses to changes in water availability and climate stressors.
Posted inNews
Five Things Spy Satellites Have Taught Us About Earth
Long before we had satellites beaming terabytes of data back to Earth, we had covert spacecraft the size of school buses snapping photos on rolls of film 50 kilometers long.
Posted inENGAGE, GeoFIZZ
Six Ways Satellites Tracked COVID-19
A new database reveals dimmer cities, empty farming fields, and vacant ports.
Posted inNews
AquaSat Gives Water Quality Researchers New Eyes in the Sky
A new data set combining sample data and remote sensing could give scientists the power to make accurate predictions at a global scale.
Posted inResearch Spotlights
A Graceful Way to Study Daily Water Storage on Land
A new analysis technique could help scientists improve the temporal resolution of satellite gravity data and see trends in terrestrial water storage and movement in near real time.
Posted inResearch Spotlights
How Accurate Are Our Measurements of the Sun’s Energy?
As instruments collecting solar data degrade, researchers must correct for errors. A new study compares several methods to correct solar spectral irradiance measurements.
Posted inScience Updates
Satellite Sleuthing Detects Underwater Eruptions
Satellite data helped scientists locate the volcanic source of a pumice raft floating in the South Pacific Ocean, illustrating their promise in locating and monitoring undersea eruptions.
Posted inResearch Spotlights
Space-Based Data Expand Understanding of Crustal Deformation
Researchers used the largest GPS data set yet to examine deformation of the crust across continental China and its implications for tectonic activity.