Transcript None - WGISS | CEOS

Landsat Status and Plans
February, 2008
Lyndon R. Oleson
U.S. Geological Survey
Earth Resources Observation and Science (EROS) Center
Sioux Falls, SD
U.S. Department of the Interior
U.S. Geological Survey
Status of Landsat
2
Landsat 5 Status




Landsat 5 imaging was suspended on October 6, 2007
due to a loss of a cell within one of two batteries.
The Landsat Flight Operations Team has been
characterizing and testing a new battery configuration
and developing and testing a new operations strategy
and plan.
The Team successfully tested imaging with the
Landsat 5 Thematic Mapper instrument on January 10,
2008 during a pass over Brazil and Argentina.
New operations plans have been completed and
tested and “normal” operations are expected by the
end of the week of February 25.
3
Landsat 7 Status


Landsat 7 operations were nominal and the Flight
Operations Team continues to monitor the health,
safety, and performance of the spacecraft on a realtime, daily, mid-term and long term basis.
However, the Landsat 7 Enhanced Thematic Mapper
instrument continues to operate without the scan-line
corrector (SLC) which reduces its suitability for
certain applications.
4
L7 SLC-off Gap-Fill
Gap-Fill Type
Landscape
Pattern
Interpolation
SLC-off & SLC-on
SLC-off & SLC-off
Segment-based
5
Same-Day
Radiometry
12 June 2001, L7
29 December 2004, L7
SLC-off
6
Filled
Sumatra
Lat: 5 06 45.70
Long: 95 20 38.38
Closeup of Gap-Fill
Adapted from Maxwell et al., in print.
7
Landsat Data Continuity Mission

LDCM Goal: The LDCM will continue the acquisition, archival,
and distribution of multi-spectral imagery affording global,
synoptic, and repetitive coverage of the Earth's land surfaces at
a scale where natural and human-induced changes can be
detected, differentiated, characterized, and monitored over time.
8
Importance of Landsat Data
Continuity

The success of LDCM depends on the complete integration of LDCM
data with past, present, and future Landsat and other remotely sensed
data for the purpose of observing and monitoring global environmental
systems. Continuity elements include:

Spectral
•
•

Spatial
•
•

Consistent and comparable spectral characteristics
Rigorous calibration / cross-calibration
Consistent and comparable data geometry including
resolution and WRS-2
Aggressive global acquisition strategy
Temporal
•
•
Minimum of 16 day repeat cycle
Ongoing acquisitions (no data gaps)
9
LDCM is a NASA / USGS Partnership

NASA will:




Acquire the space segment, mission operations systems,
and launch services
Perform overall mission systems engineering and
integration
Manage space segment early on-orbit evaluation phase from launch to acceptance
After on-orbit acceptance, operations are transferred to the
USGS
10
NASA / USGS LDCM Responsibilities

USGS will:




Acquire and operate the ground system including data
networks, image collection scheduling, archive,
processing, and distribution systems
Perform ground system integration and support mission
integration
Operate and maintain the LDCM mission following onorbit acceptance
Chair and fund the Landsat Science Team
11
LDCM Procurement Status






Instrument: Operational Land Imager (OLI) contract awarded to Ball
Aerospace (Boulder, CO) summer 2007
Launch Vehicle: Contract awarded to Lockheed Launch Services for
an Atlas V in fall 2007
Spacecraft: To be procured via NASA’s Rapid Spacecraft
Development Office in mid-2008
Flight Operations System: RFP expected in first half of 2008
Ground System: RFP planned in 2008-2009
LDCM launch planned for July 2011

Followed by 90 day on-orbit checkout and acceptance
12
Major LDCM Mission Requirements







5 year mission design life with 10 years of consumables
Support seasonal, global, image data collection (Similar to Landsat 7)
World Reference System (WRS) - 2, mid-morning equatorial crossing,
16 day repeat
30 m GSD for VIS/NIR/SWIR, 15m GSD for PAN
9 spectral bands
Instrument data will be quantized in 12-bits
Collect, ingest, and archive at least 400 global WRS-2 scenes/day for
U.S. archive
13
Major LDCM Mission Requirements

Provide “standard”, orthorectified data products within 24 hours of
observation – within quality and cloud cover assessments




Products available via the web at no cost
Calibrate data consistently with previous Landsat missions
Continue International Cooperator (IC) downlinks
Support priority imaging and a limited off-nadir collection capability
14
Operational Land Imager Spectral
Bands
Enhanced Thematic Mapper Plus (ETM+)
Operational Land Imager (OLI)
LDCM
Wavelength
(micrometer)
Wavelength
(micrometer)
Resolution
(meters)
Resolution
(meters)
Landsat 7
Band 8
.52-.90
15
Band 8 (pan)
.500-.680
15
Band 1
.433-.453
30
Band 2
.450-.515
30
Band 1
0.45-0.52
30
Band 3
.525-.600
30
Band 2
0.53-0.61
30
Band 4
.630-.680
30
Band 3
0.63-0.69
30
Band 4
0.78-0.90
30
Band 5
.845-.885
30
Band 9
1.360-1.390
30
Band 6
1.560-1.660
30
Band 5
1.55-1.75
30
Band 7
2.100-2.300
30
Band 7
2.09-2.35
30
Band 10*
10.3 - 11.3
120
Band 11*
11.5 - 12.5
120
Band 6
10.40-12.50
60
*Contingent upon requirement trades between program elements, technical elements, and mission risk
as part of the LDCM procurement.
OLI does not include thermal imaging capabilities
15
LDCM Standard Product
Specifications (L1T)







Product type:
Pixel size:
Output format:
Map projection:
Orientation:
Resampling:
Media type:
L1T (orthorectified, terrain-corrected)
15/30 meter
GeoTIFF
UTM (considering polar stereographic
projection for Antarctica)
North up
Cubic convolution
No-cost download (web-enabled) with no
electronic media options
16
Landsat Science Team

Co-chaired by the USGS Landsat Science Lead, Tom
Loveland, and the NASA LDCM Project Scientist, Jim
Irons

USGS selected 18 science team members in October
2006




9 PI’s from academia and private industry
6 federal PI’s
3 international PI’s
Curtis Woodcock, Boston U., selected as Team Leader
17
Landsat Science Team Members
PI
Organization
Proposal Title
Curtis Woodcock
Boston University
Global land cover change monitoring
Sam Goward (Darrel
Williams)
University of
Maryland/NASA
Acquisition strategies
John Schott
Rochester Institute of
Technology
Water resources monitoring
Dennis Helder
South Dakota State
University
Radiometric calibration
Lazaros Oraiopoulos
University of Maryland
Baltimore County
Cloud detection and avoidance
Richard Allen
University of Idaho
Evapotranspiration monitoring
Eric Vermote
University of Maryland
Surface reflectance
Randy Wynne
Virginia Tech
Commercial forestry applications
Feng Gao
Earth Resources
Technology
MSS-ETM+ consistency
18
Landsat Science Team Members (cont.)
PI
Organization
Proposal Title
Michael Wulder
Canadian Forest Service
Forestry, land cover change
Eileen Helmer
U.S. Forest Service
Tropical ecosystems monitoring
Martha Anderson
USDA Agricultural Research
Service
Drought monitoring
Alan Belward
EC Joint Research Center
Natural resources management
Warren Cohen
U.S. Forest Service
Forestry, vegetation assessment
Robert Bindschadler
NASA Goddard
Snow and ice monitoring
Prasad Thenkabail
International Water
Management Institute
Global irrigation monitoring
Rama Nemani
NASA Ames
Biophysical Characterization
Jim Vogelmann
SAIC/EROS
Forest and rangeland monitoring
19
Landsat Data Continuity Mission

More information:
http://ldcm.usgs.gov
http://ldcm.nasa.gov
20
Looking to LDCM: Standard L1T




Scope requirements via Pilot
 Landsat infrastructure
 Bandwidth requirements
 Right recipe?
Pilot Dataset
 US only – includes Alaska, Hawaii, & territories
 L7 ETM+ SLC-off only – 2003 to present (and
ongoing)
 < 10% cloud cover, 9 quality
Processed product (unlike other archive holdings)
Available via FTP on 4 June 2007
21
Parameters of Standard L1T

Parameters chosen by:









Current ordering statistics
Vetted through Landsat Scientists
Pixel size:
Media type:
Product type:
Output format:
Map projection:
Orientation:
Resampling:
14.25m/28.5m/28.5m
Download (no charge), CD/DVD ($50)
L1T (terrain-corrected)
GeoTIFF
UTM
North up
Cubic convolution
22
Future of Land Imaging in U.S.

The White House has initiated a year-long study called
The Future of Land Imaging



In August, 2007, the Bush Administration released a
plan for a U.S. National Land Imaging Program



To explore options for United States operational use of
satellites to better serve society.
The USGS, along with NASA, NOAA and other agencies,
serves on the leadership team of this Federal interagency
working group.
to achieve a stable and sustainable U.S. operational spacebased, moderate-resolution land imaging capability
designates the Department of the Interior (w/ USGS) as the
host of the program
For more information visit http://www.landimaging.gov
23