Earth Imaging Journal: Remote Sensing, Satellite Images, Satellite Imagery
Breaking News
With its new generation LiDAR, Valeo makes autonomous mobility a reality
PARIS - Valeo, the global leader in driving assistance...
Ouster Expands to Japan and South Korea to Support Growing Demand for High-Resolution Digital Lidar Sensors
SAN FRANCISCO - Ouster, Inc. (NYSE: OUST) (“Ouster” or...
Burgex Mining Consultants Adds High Accuracy LiDAR Mapping Capabilities to Range of Services
SALT LAKE CITY -Burgex Inc. Mining Consultants is excited...
Esri Releases GIS for Science, Volume 3
REDLANDS, Calif.-Species are the foundation of a healthy planet,...
Valeo Introduces Its Third Generation LiDAR
DETROIT - Valeo, the global leader in advanced driving...

The ECOSTRESS image shows plant stress in the Guanacaste region of Costa Rica (in red on inset map) a few months after the onset of a major Central American drought. Red indicates high stress, yellow is moderate stress, greens/blues are low stress. Light gray is cloud. (Credit: NASA/JPL-Caltech)

NASA’s ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station (ECOSTRESS) imaged the stress on Costa Rican vegetation caused by a massive regional drought that led the Central American nation’s government to declare a state of emergency on July 23, 2019.

Parts of Costa Rica have received 75% less rainfall than normal in the drought, which is the result of abnormal weather patterns accompanying an El Niño that began in November 2018. The drought’s effects were already visible to ECOSTRESS in February 2019.

Launched to the International Space Station in June 2018, ECOSTRESS measures the temperature of plants as they heat up when they run out of water. A key benefit of the instrument, in addition to providing information on surface temperature and plant water use, is its ability to detect droughts as they stress plants.

In Costa Rica, more intense drought conditions—shown in red colors in this image—are centered on the province of Guanacaste, part of a Central American tropical dry forest region called the Dry Corridor that is particularly sensitive to droughts. Normally very cloudy, Guanacaste had few clouds (appearing in light gray) when ECOSTRESS acquired this image.

ECOSTRESS measures variations in ground temperatures to within a few tenths of a degree and is able to detect temperature changes at various times of day over areas as small as a single farm. These measurements help scientists assess how healthy plants are and how they respond to water shortages. Not only can the measurements be an indicator of future drought, they can also be used in observing heat trends, spotting wildfires and detecting volcanic activity.

Comments are closed.