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U.S. Department of the InteriorU.S. Geological Survey
Landsat at 40: The Nation’s oldest Earth-observing satellite program
Matt LarsenUSGS Associate Director, Climate and Land Use Change
May 10, 2013
Yukon deltaLandsat “Earth as Art”, on display at
Library of Congress
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“…the time is now right and urgent to apply space technology towards the solution of many pressing natural resource problems being compounded by population and industrial growth.”
Secretary of the Interior Stewart Udall, 1966
2013: National Strategy for Civil Earth Observations
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Landsat is moderate resolution
Low resolution - 1 km
Advanced Very High Resolution Radiometer
Moderate resolution - 30 m
Landsat 7 Enhanced Thematic Mapper Plus
Very high resolution - 1 m
IKONOS Panchromatic
Optimal for weather and meteorological satellite imagery
Optimal for studies at regional, national, or continental scales
Optimal for site-specific studies; too fine to easily conduct studies of regional scale phenomena
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Increasing demand for free Landsat data
2008 2009 2010 2011 2012 2013 20140
2,000,000
4,000,000
6,000,000
8,000,000
10,000,000
12,000,000
Total Landsat scenes provided to users since January 2008
Free data policyOctober 1, 2008
Sce
nes
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Who uses Landsat? Federal government
• USDA estimates domestic and global crop yields
• NOAA assesses coastal change
• BLM monitors rangeland conditions in the West
• BoR monitors water demand
• FWS maps and monitors wildlife habitat
• NPS produces wildfire burn severity maps for 30 million acres
• USGS assesses potential for ecological carbon sequestration
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Who uses Landsat? Federal government
• USDA estimates domestic and global crop yields
• NOAA assesses coastal change
• BLM monitors rangeland conditions in the West
• BoR monitors water demand
• FWS maps and monitors wildlife habitat
• NPS produces wildfire burn severity maps for 30 million acres
• USGS assesses potential for ecological carbon sequestration
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National Land Cover Database
• agriculture• tree canopy• water bodies/
wetlands• shrubland/
grassland• impervious
surface
16 land cover classes:
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Drought Monitoring
http://vegdri.unl.edu/
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Mesa Verde National Park Fire Atlas
1984 1989 1990
1996 1997 1999 2000 2000
2001 2002 2002 2002
1973 1978
2004
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Mitigation of climate change
National assessment of ecological carbon sequestration
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Who Uses Landsat? States
• Arkansas tracks land use change• Texas conducts annual forest inventories• California assesses fire risk and tracks land use change• Idaho (and other states) monitor consumptive water use• Louisiana plans and monitors coastal restoration• Ohio develops environmental compliance-monitoring tools• Wisconsin develops disaster-recovery maps• Kansas monitors unpermitted dams• Nebraska maps agricultural land use• Minnesota monitors lake clarity
12
0
500
1000
1500
2000
2500
3000
3500
>4 3-4 2-3 1-2 0.5-1 <0.5
Water Clarity (m)
Nu
mb
er
of
Lakes
Minnesota Lake Clarity2005
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Understanding policy outcomes
40 years of land use change in the Chesapeake Bay region, and consequences for water quality and wildlife habitat
Change In Impervious Surface - 2010
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A 40-year policy and budget challenge
The President’s 2014 budget:
- the Administration has committed to continue the Landsat program and its invaluable data stream
- contains language calling on NASA and DOI-USGS to jointly develop a follow-on mission to Landsat 8
- we’ve begun, and look forward to a sustained operational mission