Land Remote Sensing Program
The USGS is fostering the use of land remote sensing technology to meet local, national, and global challenges.
On June 18, 2015 in Canberra, Australia, the U.S. Geological Survey and Geoscience Australia signed a comprehensive new partnership to maximize land remote sensing operations and data that can help to address issues of national and international significance.
The USGS has begun production of higher-level (more highly processed) Landsat data products to help advance land surface change studies. One such product is Landsat surface reflectance data. Surface reflectance data products approximate what a sensor held just above the Earth's surface would measure, if conditions were ideal. The precise removal of atmospheric artifacts increases the consistency and comparability between images of the Earth's surface taken at different times of the year and different times of the day.
NASA and the U.S. Geological Survey (USGS) have started work on Landsat 9, planned to launch in 2023, which will provide mission-critical continuity in the Earth-observing program's record of land images.
The William T. Pecora Award is presented annually to individuals or groups that have made outstanding contributions toward understanding the Earth by means of remote sensing. Nominations for the 2015 award must be received by June 15, 2015.
Taking a hard look at the value of Landsat to the U.S. economy was the goal of the Landsat Advisory Group of the National Geospatial Advisory Committee. The team of commercial, state/local government, and non-profit geospatial information experts updated a critical review of the value of Landsat information that was recently released to the public. Their conclusion states the economic value of just one year of Landsat data far exceeds the multi-year total cost of building, launching, and managing the satellites and sensors. The impressive return emphasizes Landsat's role as a crucial national asset comparable to the satellite-based GPS system and National Weather Service satellites. Empowered by free access to the Landsat data archive since 2008, researchers are examining our planet in much greater detail.
Visit the Highlights Archive for information highlighted here in the past.
Landsat 8 is demonstrating promising new capabilities for water quality assessment. Satellite-based instruments allow for more frequent observations over broader areas than physical water sampling. Four federal agencies—NASA, NOAA, EPA, and USGS—are joining forces to develop an early warning system for toxic and nuisance algal blooms. Through this project, satellite data on harmful algal blooms will be converted to a format that stakeholders can use through mobile devices and web portals. This will improve detection of these blooms and help researchers better understand the conditions under which they occur.
USGS scientists used Landsat data to determine that forests, wetlands and farms in the eastern U.S. naturally store 300 million tons of carbon a year, which is nearly 15 percent of the greenhouse gas emissions EPA estimates the country emits each year or an amount that exceeds and offsets yearly U.S. car emissions. In conjunction with the national assessment, USGS released a new web tool, which allows users to see the land and water carbon storage and change in their ecosystems between 2005 and 2050 in the lower 48 states. Biological carbon storage - also known as carbon sequestration - is the process by which carbon dioxide (CO2) is removed from the atmosphere and stored as carbon in vegetation, soils and sediment. The USGS estimates the ability of different ecosystems to store carbon now and in the future, providing vital information for land-use and land-management decisions. Management of carbon stored in our ecosystems and agricultural areas is relevant both for mitigation of climate change and for adaptation to such changes.
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