Asian Surveying & Mapping
Breaking News
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...
New Zealand’s Counties Energy Partners with GE Digital for its Digital Utility Transformation
GE Digital today announced that Counties Energy, an electricity distribution network...
The Hong Kong Institute of Surveyors: Best Development & Conservation Award 2021 Surveying Excellence in Development and Conservation
HONG KONG SAR  - The results of HKIS Best...
India, Japan researchers working on smartphone-based mapping of cracks, potholes in roads
The joint project is aimed at developing an affordable...
Dubai Airshow 2021: Israeli companies offer space systems, UAVs to the Middle East
UAVs and new communications and Earth observation satellites were...
Space company Success Rockets presented the demonstrator model of the first Russian specialized satellite for monitoring the main climate-active substances “DIANA” at the 26th UN Climate Conference in Glasgow
Russian private space company Success Rockets is developing a...
Intermap Expands Support of TATA Communications Across Major Indian Cities
DENVER,- Intermap Technologies (TSX: IMP) (OTCQX: ITMSF) ("Intermap" or...
European Space Agency launches new mission to measure climate change in unprecedented detail
The European Space Agency (ESA) has new plans to...
Israeli startup to collaborate with EXL in providing property intelligence images for insurance carriers
Strategic partnership will bring together aerial imagery, advanced analytics,...
China Launches Three New Remote Sensing Satellites Into Space
The satellite launch marked the 396th mission for the...

October 20th, 2011
NASA, Japan Release Improved Topographic Map of Earth

“The ASTER global digital elevation model was already the most complete, consistent global topographic map in the world,” said Woody Turner, ASTER program scientist at NASA Headquarters in Washington. “With these enhancements, its resolution is in many respects comparable to the U.S. data from NASA’s Shuttle Radar Topography Mission, while covering more of the globe.”

The improved version of the map adds 260,000 additional stereo-pair images to improve coverage. It features improved spatial resolution, increased horizontal and vertical accuracy, more realistic coverage over water bodies and the ability to identify lakes as small as 0.6 miles (1 kilometer) in diameter. The map is available online to users everywhere at no cost.

“This updated version of the ASTER global digital elevation model provides civilian users with the highest-resolution global topography data available,” said Mike Abrams, ASTER science team leader at NASA’s Jet Propulsion Laboratory in Pasadena, Calif. “These data can be used for a broad range of applications, from planning highways and protecting lands with cultural or environmental significance, to searching for natural resources.”

The ASTER data cover 99 percent of Earth’s landmass and span from 83 degrees north latitude to 83 degrees south. Each elevation measurement point in the data is 98 feet (30 meters) apart.

NASA and METI are jointly contributing the data for the ASTER topographic map to the Group on Earth Observations, an international partnership headquartered at the World Meteorological Organization in Geneva, Switzerland, for use in its Global Earth Observation System of Systems. This “system of systems” is a collaborative, international effort to share and integrate Earth observation data from many different instruments and systems to help monitor and forecast global environmental changes.

ASTER is one of five instruments launched on Terra in 1999. ASTER acquires images from visible to thermal infrared wavelengths, with spatial resolutions ranging from about 50 to 300 feet (15 to 90 meters). A joint science team from the United States and Japan validates and calibrates the instrument and data products. The U.S. science team is located at JPL.

NASA, METI, Japan’s Earth Remote Sensing Data Analysis Center (ERSDAC), and the U.S. Geological Survey validated the data, with support from the U.S. National Geospatial-Intelligence Agency and other collaborators. The data are distributed by NASA’s Land Processes Distributed Active Archive Center at the U.S. Geological Survey’s Earth Resources Observation and Science Center in Sioux Falls, S.D., and by ERSDAC in Tokyo.

Users of the new version of the ASTER data products are advised that while improved, the data still contain anomalies and artifacts that will affect its usefulness for certain applications.

Data users can download the ASTER global digital elevation model at: https://lpdaac.usgs.gov/ or http://www.ersdac.or.jp/GDEM/E/4.html .

For more information about ASTER, visit: http://asterweb.jpl.nasa.gov/ . For more information on NASA’s Terra mission, visit: http://www.nasa.gov/terra .