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    Federal
National Hydrography Dataset (NHD) - USGS National Map Downloadable Data Collection NGDA
Department of the Interior —
The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's... - 
  
    Federal
Partial pressure (or fugacity) of carbon dioxide, salinity and other variables collected from Surface underway observations using Carbon dioxide (CO2) gas analyzer, Shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement and other instruments from the MONTE OLIVIA and Rio Blanco in the English Channel, North Atlantic Ocean and others from 2009-01-18 to 2009-12-23 (NCEI Accession 0117337)
National Oceanic and Atmospheric Administration, Department of Commerce —
This dataset includes Surface underway, chemical, meteorological and physical data collected from MONTE OLIVIA and Rio Blanco in the English Channel, North Atlantic... - 
  
    Federal
Terrestrial Ecosystems - Land Surface Forms of the Conterminous United States
Department of the Interior —
The U.S. Geological Survey (USGS) has generated land surface form classes for the contiguous United States. These land surface form classes were created as part of an... - 
  
    Federal
NOAA Optimum Interpolation 1/4 Degree Daily Sea Surface Temperature (OISST) Analysis, Version 2
National Oceanic and Atmospheric Administration, Department of Commerce —
This high-resolution sea surface temperature (SST) analysis product was developed using an optimum interpolation (OI) technique. The SST analysis has a spatial grid...