OGC WMS standards serve visualizations of geographical data in “flat” map-like layered images.

  • HTTP queries a WMS server and returns pre-rendered images from different sources.
  • The returned images from different sources can be layered on top of each other.

The following links are two XML examples for GetCapabilities Request:

GetMap Northern Hemisphere request using the known parameters from GetCapabilities:

http://nsidc.org/cgi-bin/atlas_north?
service=WMS&
version =1.1.1&
request =GetMap&
srs=EPSG:32661&
format=image/gif&
width=1000&
height=1000&
bbox=-2700000,-2700000,6700000,6700000&
layers=sea_ice_extent_01,land,snow_extent_01,permafrost_extent,country_borders,treeline,north_pole_geographic,arctic_circle,country_labels,geographic_features_sea 

GetMap Response:

Reference:

http://www.opengeospatial.org/standards/wms