Datasets Online

General Atmosphere Ocean Land Maps

NASA - Distributed Active Archive Centers (DAACs)NASA - EOS Pathfinder Data SetsNOAA Data Set Catalog

General
NOAA NICNOAA - National Climate Data Center (NCDC)NASA - Remote Sensing Data (RSD)WMO Global Precipitation Climatology Centre
Atmosphere
U.Del - Ocean Information Center (OCEANIC)
Ocean
NOAA - National Geophysical Data Center (NGDC)Home Page for Global Soils Information SystemsUSGS GeoData
SoftwareUSGS - Global Land Information System (GLIS)ISLSCP Initiative I Data Collection
Land
USGS Cartographic DataXerox PARC Map Viewer
US Census - Tiger Maping Service
Maps and Map Data