Metadata file for: TC_World_Geo_180.ecw
Content: TerraColor World color shaded relief image with northeast shading
Area of coverage: World centered on 180 degrees
Date created: 2003
Source data for elevation: Global Land One-Km Base Elevation (GLOBE) Project
Source data for bathymetry: Smith & Sandwell Bathymetry & USGS ETOPO5
Processed by: Earthstar Geographics (www.es-geo.com)
Available at: www.terracolor.net

Notes: Image colors generally represent land elevations above sea level
and water depths below sea level. To add context, major inland lakes 
and rivers are colored light blue and areas with glacial ice are
colored white. Legends are included as separate TIFF image files. Sun 
shading is from the northeast, so shadows fall on the southwest side of 
topographic and bathymetric features.

Credits for source data:
Land elevations: From the Global Land One-Km Base Elevation (GLOBE) Project.
For details, see their website: http://www.ngdc.noaa.gov/seg/topo/globe.shtml

Land inland water and glacial ice: Olson Global Ecosystems 1-Km global land 
cover data base derived from AVHRR satellite imagery. (Class 12 is glacial
ice, class 14 is inland water.)  For details, see the Land Processes
Distributed Active Archive Center website: 
http://edcdaac.usgs.gov/glcc/globdoc2_0.html

Ocean bathymetry between 72 deg North and 72 Deg South: From Smith, W. H. F., 
and D. T. Sandwell, "Global seafloor topography from satellite altimetry and 
ship depth soundings." See their website for complete information:
http://topex.ucsd.edu/marine_topo/mar_topo.html

Ocean bathymetry north of 72 deg and south 72 Deg: From USGS ETOPO5 (Earth
Topography - 5 Minute).  See their website for complete information:
http://edc.usgs.gov/glis/hyper/guide/etopo5

The Latitude Longitude map projection used for this image (also called Geographic
or unprojected) is a very simple projection formed by considering longitude and 
latitude as a simple rectangular coordinate system.  Scale, distance, area, and 
shape are all distorted with the distortion increasing toward the poles. Although 
other world projections portray the earth much more accurately, this projection 
is commonly used for image data. Any collateral data stored in units of decimal 
degrees can be plotted on this projection.

This version is centered on 180 degrees to provide an uninterrupted view of
the Pacific Ocean. The image registration coordinates in the western hemisphere
range from 180 to 360 instead of -180 to 0. Collateral data can be plotted on
this image by adding 360 to all negative (west hemisphere) Longitude coordinates
of other datasets. The registration of the ECW image can also be changed using 
the ECW Header Editor available for free download from www.ermapper.com. (Make 
a backup copy of the ECW first.)

Data format: Enhanced Compressed Wavelet (ECW) Unsigned 24-bit RGB
Byte order: Intel
Number of rows: 43200
Number of columns: 21600
Number of bands: 3
Value for null pixels: None

Uncompressed file size: 2.61 GB
ECW compressed file size: 92.8 MB

Pixel size X: 0.0083333 Decimal Degrees
Pixel size Y: 0.0083333 Decimal Degrees

Datum: WGS84
Projection: Latitude Longitude (Geographic)
XY Units: Decimal Degrees

UL corner X,Y: 0.0, 90.0
LR corner X,Y: 360.0, -90.0

UL corner Lat, Long: 90:0:0.0N, 0:0:0.0E
LR corner Lat, Long: 90:0:0.0S, 360:0:0.0W