The WMS Global Mosaic is a global mosaic of 8208, orthorectified, Landsat7 ETM+
scenes from the NASA Scientific Data Purchase GeoCover 2000 dataset. The
purpose of the WMS Global Mosaic is to provide OpenGIS Web Map Service (WMS)
access to a medium resolution (up to 15m), multispectral and recent data set
with global extent, suitable as a base-map for many applications and to enable
analysis using false-color rendering of Landsat imagery by any http client.
False-color rendering is by the user's choice of any combination of the ETM+
bands using OpenGIS(r) Style Layer Descriptor (SLD).
[Summary provided by NASA.]
Purpose:
Not Available
Supplemental_Information:
Not Available
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19990629
Ending_Date: 20030114
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -180.0
East_Bounding_Coordinate: 180.0
North_Bounding_Coordinate: 85.0
South_Bounding_Coordinate: -85.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > LAND TEMPERATURE
Theme_Keyword: ETM+ > ENHANCED THEMATIC MAPPER PLUS
Theme_Keyword: MODIS > MODERATE-RESOLUTION IMAGING SPECTRORADIOMETER
Theme_Keyword: ESIP > EARTH SCIENCE INFORMATION PARTNERS PROGRAM
Theme_Keyword: OGC/WMS > OPEN GEOSPATIAL CONSORTIUM/WEB MAP SERVICE
Theme_Keyword: Gis
Theme_Keyword: Geographic Information Systems
Theme_Keyword: Wms
Theme_Keyword: Satellite Imagery
Theme_Keyword: Multispectral Imagery
Theme_Keyword: Gcmd Mapserver
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: IMAGERY/BASE MAPS/EARTH COVER
Theme_Keyword: PLANNING CADASTRE
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: GEOGRAPHIC REGION > GLOBAL
Access_Constraints:
None
Use_Constraints:
There are no restrictions as to the use of this data. We ask that the NASA
Geospatial Interoperability Program be identified as the source are used in a
publication.
The mosaic was constructed from the GeoCover 2000 dataset. The WMS Global
Mosaic is a high level dataset, affected by the accuracy of the input scenes,
plus the ones introduced by the mosaic building procesing step. Average values
of each of the input spectral bands have been preserved as much as possible.
The values of the source scenes have been altered to reduce the visible
artifacts inherent in an image mosaic. Where two or more scenes contribute to
the value of a pixel, a normalized weighted sum was used to produce the value
of the output pixel. During the coordinate transformation form UTM to
geographical coordinates, input image sampling has been done using bilinear
interpolation.