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Landsat System: 15-80m spatial resolution. The workhorse for regional remote sensing. Seven different Landsat satellites have been launched since 1972.

Landsat Info from the USGS

SPOT Home Page: French competitor to the Landsat series of satellites.

Web Enabled Landsat Data (WELD): (Link 1) (Link 2)

Note that quite a few “local” Landsat images are available on the J-drive at J:\GEO\GEO_data\NW_Region\Landsat. Many of these images have been pre-processed to create ERDAS or ENVI files and many of them have been co-registered to one another to facilitate change detection analyses.

Low Spatial Resolution (250m – 4km)

MODIS: Moderate Resolution Imaging Spectrometer: 250-1000m spatial resolution in 36 spectral bands.

Other Systems

Shuttle Radar Topography Mission (This February 2000 mission collected high resolution topographic data covering 80% of the earth's surface. When data processing is complete, this will provide the most complete global topographic data set ever.)

ICESAT: (Ice, Cloud, and land Elevation Satellite) is the benchmark Earth Observing System mission for measuring ice sheet mass balance, cloud and aerosol heights, as well as land topography and vegetation characteristics. This is the first spaceborne LIDAR instrument.

Sources of Imagery:

Satellite Imaging Corporation: Reseller of satellite data from other companies. They also do preprocessing of data. Their website includes a nice summary of the characteristics of a wide range of satellites and sensors (sensor info).

NASA Global Change Master Directory (Comprehensive searchable directory for data sets on Global Change)

USGS Global Fiducials Library: Archive of declassified intelligence satellite imagery from selected sites

Existing Vegetation Maps Derived from Satellite Imagery:

NOAA: Pacific Coast Land Cover Change Project (C-CAP): Based on 30m Landsat data from 1995-2005. Good for broad LULC classes. Little detail on different forest structure and composition. Note that we have this layer available on the J-drive at: J:\GEO\GEO_data\NW_Region\Landsat_Derived

Bureau of Land Management: Oregon and Washinton; Interagency Vegetation Mapping Project: IVMP is a joint effort of the US Forest Service and the BLM. It supports the Northwest Forest Plan and it is intended to provide detailed, consistent data on forest structure and composition for the entire range of the Northern Spotted Owl. All vegetation layers are based on Landsat data from the mid-1990s. Four data layers are provided: Total % vegetation cover, % conifer cover, % broadleaf cover and conifer size (Quadratic Mean tree Diameter). Links to several other vegetation mapping efforts – other than IVMP - are also available from this site. Also note that we have this layer available on the J-drive at: J:\GEO\GEO_data\NW_Region\Landsat_Derived

Multiresolution Land Characterization Consortium

Also note that we have a Landsat-based change detection layer for the PNW region. This layer delineates areas subjected to timber harvest and fire during different time periods from about 1972-2004. This can be found on the J-drive at: J:\GEO\GEO_data\NW_Region\Landsat_Derived

Ancillary Data (DEMs, Climate data, etc.):

Gifford Pinchot National Forest: GIS Data

National Geospatial Intelligence Agency

PRISM Climate Mapping Program (State, Regional and National Level Climate Data Layers)

REI.com; Horizon Maps (downloadable custom topo maps)

U.S. Census Bureau, TIGER Map Service (digital map database)

Washington State Dept. of Natural Resources: GIS Data

Washington State Department of Ecology

USGS National Seamless Map Server

Image Processing Software:

PCI Image Processing Software

ERDAS Image Processing Software