<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<DIF xmlns="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/ http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/dif_v9.7.1.xsd">
  <Entry_ID>NSIDC-0032</Entry_ID>
  <Entry_Title>DMSP SSM/I-SSMIS Pathfinder Daily EASE-Grid Brightness Temperatures</Entry_Title>
  <Data_Set_Citation>
    <Dataset_Creator>Armstrong, R. L., K. W. Knowles, M. J. Brodzik and M. A. Hardman</Dataset_Creator>
    <Dataset_Title>DMSP SSM/I-SSMIS Pathfinder Daily EASE-Grid Brightness Temperatures</Dataset_Title>
    <Dataset_Release_Date>1998-01-01updated current year.</Dataset_Release_Date>
    <Dataset_Release_Place>Boulder, Colorado USA</Dataset_Release_Place>
    <Dataset_Publisher>NSIDC: National Snow and Ice Data Center</Dataset_Publisher>
    <Version>2</Version>
    <Online_Resource>http://nsidc.org/data/nsidc-0032.html</Online_Resource>
  </Data_Set_Citation>
  <Personnel>
    <Role>Technical Contact</Role>
    <First_Name>NSIDC</First_Name>
    <Last_Name>User Services</Last_Name>
    <Email>nsidc@nsidc.org</Email>
    <Phone>1 303 492-6199 x</Phone>
    <Fax>1 303  492-2468 x</Fax>
    <Contact_Address>
      <Address>National Snow and Ice Data Center</Address>
      <Address>CIRES, 449 UCB</Address>
      <Address>University of Colorado</Address>
      <City>Boulder</City>
      <Province_or_State>CO</Province_or_State>
      <Postal_Code>80309-0449</Postal_Code>
      <Country>USA</Country>
    </Contact_Address>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>Richard</First_Name>
    <Last_Name>Armstrong</Last_Name>
    <Email>rlax@nsidc.org</Email>
    <Phone>1 303 492-6199 </Phone>
    <Fax>1 303  492-2468 </Fax>
    <Contact_Address>
      <Address>National Snow and Ice Data Center</Address>
      <Address>National Snow and Ice Data Center</Address>
      <Address>CIRES 449 UCB</Address>
      <Address>University of Colorado</Address>
      <City>Boulder</City>
      <Province_or_State>Colorado</Province_or_State>
      <Postal_Code>80309-0449</Postal_Code>
      <Country>USA</Country>
    </Contact_Address>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>Mary J.</First_Name>
    <Last_Name>Brodzik</Last_Name>
    <Email>brodzik@nsidc.org</Email>
    <Contact_Address>
      <Address>National Snow and Ice Data Center</Address>
      <Address>National Snow and Ice Data Center</Address>
      <Address>CIRES, 449 UCB</Address>
      <Address>University of Colorado</Address>
      <City>Boulder</City>
      <Province_or_State>CO</Province_or_State>
      <Postal_Code>80309-0449</Postal_Code>
    </Contact_Address>
  </Personnel>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Spectral/Engineering</Topic>
    <Term>Microwave</Term>
    <Variable_Level_1>Brightness Temperature</Variable_Level_1>
  </Parameters>
  <ISO_Topic_Category>Climatology/Meteorology/Atmosphere</ISO_Topic_Category>
  <Keyword>Antarctic</Keyword>
  <Keyword>Arctic</Keyword>
  <Keyword>DMSP</Keyword>
  <Keyword>Ease</Keyword>
  <Keyword>EASE-Grid</Keyword>
  <Keyword>EOSDIS</Keyword>
  <Keyword>Global</Keyword>
  <Keyword>Gridded Data</Keyword>
  <Keyword>IDN_NODE GSFC/NSIDC</Keyword>
  <Keyword>NASA Pathfinder</Keyword>
  <Keyword>NOAA/NASA Pathfinder</Keyword>
  <Keyword>NOAA Pathfinder</Keyword>
  <Keyword>Passive Microwave</Keyword>
  <Keyword>Pathfinder</Keyword>
  <Keyword>Polar</Keyword>
  <Keyword>Remote Sensing</Keyword>
  <Keyword>SSM/I</Keyword>
  <Keyword>SSMIS</Keyword>
  <Sensor_Name>
    <Short_Name>SSM/I</Short_Name>
    <Long_Name>Special Sensor Microwave/Imager</Long_Name>
  </Sensor_Name>
  <Sensor_Name>
    <Short_Name>SSMIS</Short_Name>
    <Long_Name>Special Sensor Microwave Imager/Sounder</Long_Name>
  </Sensor_Name>
  <Source_Name>
    <Short_Name>DMSP</Short_Name>
    <Long_Name>Defense Meteorological Satellite Program</Long_Name>
  </Source_Name>
  <Source_Name>
    <Short_Name>DMSP 5D-2/F11</Short_Name>
    <Long_Name>Defense Meteorological Satellite Program-F11</Long_Name>
  </Source_Name>
  <Source_Name>
    <Short_Name>DMSP 5D-2/F13</Short_Name>
    <Long_Name>Defense Meteorological Satellite Program-F13</Long_Name>
  </Source_Name>
  <Source_Name>
    <Short_Name>DMSP 5D-2/F8</Short_Name>
    <Long_Name>Defense Meteorological Satellite Program-F8</Long_Name>
  </Source_Name>
  <Source_Name>
    <Short_Name>DMSP 5D-3/F17</Short_Name>
    <Long_Name>Defense Meteorological Satellite Program-F17</Long_Name>
  </Source_Name>
  <Temporal_Coverage>
    <Start_Date>1987-07-09</Start_Date>
    <Stop_Date>2013-03-31</Stop_Date>
  </Temporal_Coverage>
  <Data_Set_Progress>in work</Data_Set_Progress>
  <Spatial_Coverage>
    <Southernmost_Latitude>-90</Southernmost_Latitude>
    <Northernmost_Latitude>90</Northernmost_Latitude>
    <Westernmost_Longitude>-180</Westernmost_Longitude>
    <Easternmost_Longitude>180</Easternmost_Longitude>
  </Spatial_Coverage>
  <Location>
    <Location_Category>CONTINENT</Location_Category>
    <Location_Type>NORTH AMERICA</Location_Type>
    <Location_Subregion1>CANADA</Location_Subregion1>
    <Location_Subregion2>HUDSON BAY</Location_Subregion2>
  </Location>
  <Location>
    <Location_Category>GEOGRAPHIC REGION</Location_Category>
    <Location_Type>GLOBAL</Location_Type>
  </Location>
  <Location>
    <Location_Category>GEOGRAPHIC REGION</Location_Category>
    <Location_Type>POLAR</Location_Type>
  </Location>
  <Location>
    <Location_Category>OCEAN</Location_Category>
    <Location_Type>ARCTIC OCEAN</Location_Type>
    <Detailed_Location>BAFFIN BAY</Detailed_Location>
  </Location>
  <Location>
    <Location_Category>OCEAN</Location_Category>
    <Location_Type>ARCTIC OCEAN</Location_Type>
    <Location_Subregion1>BEAUFORT SEA</Location_Subregion1>
  </Location>
  <Location>
    <Location_Category>OCEAN</Location_Category>
    <Location_Type>ARCTIC OCEAN</Location_Type>
    <Location_Subregion1>CHUKCHI SEA</Location_Subregion1>
  </Location>
  <Location>
    <Location_Category>OCEAN</Location_Category>
    <Location_Type>ATLANTIC OCEAN</Location_Type>
    <Detailed_Location>NORTH ATLANTIC OCEAN</Detailed_Location>
  </Location>
  <Location>
    <Location_Category>OCEAN</Location_Category>
    <Location_Type>ATLANTIC OCEAN</Location_Type>
    <Location_Subregion1>NORTH ATLANTIC OCEAN</Location_Subregion1>
    <Detailed_Location>GREENLAND SEA</Detailed_Location>
  </Location>
  <Location>
    <Location_Category>OCEAN</Location_Category>
    <Location_Type>PACIFIC OCEAN</Location_Type>
    <Location_Subregion1>NORTH PACIFIC OCEAN</Location_Subregion1>
    <Location_Subregion2>BERING SEA</Location_Subregion2>
  </Location>
  <Location>
    <Location_Category>OCEAN</Location_Category>
    <Location_Type>SOUTHERN OCEAN</Location_Type>
    <Detailed_Location>AMUNDSEN SEA</Detailed_Location>
  </Location>
  <Data_Resolution>
    <Latitude_Resolution>25 km</Latitude_Resolution>
    <Longitude_Resolution>25 km</Longitude_Resolution>
    <Temporal_Resolution>1 day</Temporal_Resolution>
  </Data_Resolution>
  <Data_Resolution>
    <Latitude_Resolution>12.5 km</Latitude_Resolution>
    <Longitude_Resolution>12.5 km</Longitude_Resolution>
    <Temporal_Resolution>1 day</Temporal_Resolution>
  </Data_Resolution>
  <Project>
    <Short_Name>EOSDIS</Short_Name>
    <Long_Name>Earth Observing System Data Information System</Long_Name>
  </Project>
  <Project>
    <Short_Name>ESIP</Short_Name>
    <Long_Name>Earth Science Information Partners Program</Long_Name>
  </Project>
  <Project>
    <Short_Name>NOAA/NASA PATHFINDER</Short_Name>
    <Long_Name>NOAA/NASA Pathfinder Program</Long_Name>
  </Project>
  <Data_Set_Language>English</Data_Set_Language>
  <Originating_Center>NSIDC_DAAC</Originating_Center>
  <Data_Center>
    <Data_Center_Name>
      <Short_Name>NSIDC_DAAC</Short_Name>
      <Long_Name>NASA DAAC at the National Snow and Ice Data Center</Long_Name>
    </Data_Center_Name>
    <Data_Center_URL>http://nsidc.org/daac/index.html</Data_Center_URL>
    <Personnel>
      <Role>Data Center Contact</Role>
      <First_Name>NSIDC</First_Name>
      <Last_Name>User Services</Last_Name>
      <Email>nsidc@nsidc.org</Email>
      <Phone>1 303 492-6199 </Phone>
      <Fax>1 303  492-2468 </Fax>
      <Contact_Address>
        <Address>National Snow and Ice Data Center</Address>
        <Address>CIRES, 449 UCB</Address>
        <Address>University of Colorado</Address>
        <City>Boulder</City>
        <Province_or_State>CO</Province_or_State>
        <Postal_Code>80309-0449</Postal_Code>
        <Country>USA</Country>
      </Contact_Address>
    </Personnel>
  </Data_Center>
  <Data_Center>
    <Data_Center_Name>
      <Short_Name>NSIDC</Short_Name>
      <Long_Name>National Snow and Ice Data Center</Long_Name>
    </Data_Center_Name>
    <Data_Center_URL>http://nsidc.org</Data_Center_URL>
    <Personnel>
      <Role>Data Center Contact</Role>
      <First_Name>NSIDC</First_Name>
      <Last_Name>User Services</Last_Name>
      <Email>nsidc@nsidc.org</Email>
      <Phone>1 303 492-6199 </Phone>
      <Fax>1 303  492-2468 </Fax>
      <Contact_Address>
        <Address>National Snow and Ice Data Center</Address>
        <Address>CIRES, 449 UCB</Address>
        <Address>University of Colorado</Address>
        <City>Boulder</City>
        <Province_or_State>CO</Province_or_State>
        <Postal_Code>80309-0449</Postal_Code>
        <Country>USA</Country>
      </Contact_Address>
    </Personnel>
  </Data_Center>
  <Distribution>
    <Distribution_Media>FTP</Distribution_Media>
    <Distribution_Size>1 - 4096 KB</Distribution_Size>
    <Distribution_Format>Binary</Distribution_Format>
  </Distribution>
  <Reference>Brodzik, M. J. 1997. 'EASE-Grid: A Versatile Set of Equal-Area Projections and Grids.' NSIDC, Boulder, Colorado USA. http://nsidc.org/data/ease/ease_grid.html. 

Galantowicz, J. F., A. W. England. 1991. The Michigan Earth Grid: Description, Registration Method for SSM/I Data, and Derivative Map Projections. Radiation Laboratory, Department of Electrical Engineering and Computer Science, Technical 

Galantowicz, J. F. 1995. Microwave Radiometry of Snow-Covered Grasslands for the Estimation of Land-Atmosphere Energy and Moisture Fluxes. PhD Thesis, Department of Electrical Engineering and Computer Science and Department of Atmospheric, Oceanic, and Space Sciences. University of Michigan, Ann Arbor, Michigan USA. 

Knowles, K. W. 1993. 'Points, Pixels, Grids, and Cells -- A Mapping and Griddi Primer.' NSIDC, Boulder, Colorado USA. http://cires.colorado.edu/~knowlesk/ppgc.html

Poe, G. A. 1990. Optimum Interpolation of Imaging Microwave Radiometer Data. IEEE Transactions Geoscience &amp; Remote Sensing GE-28:800-810.

Stogryn, A. 1978. Estimates of Brightness Temperatures from Scanning Radiometer Data. IEEE Transactions Antennas &amp; Propagation AP-26:720-726.

Wentz, F. J. 1991. User's Manual SSM/I Antenna Temperature Tapes, Revision 1. Remote Sensing Systems Technical Report 120191. Santa Rosa, California USA.

Wentz, F. J. 1992. Final Report, Production of SSM/I Data Sets. Remote Sensing Systems Technical Report 090192. Santa Rosa, California USA.

Wentz, F. J. 1993. User's Manual SSM/I Antenna Temperature Tapes, Revision 2. Remote Sensing Systems Technical Report 120193. Santa Rosa, California USA.</Reference>
  <Summary>This Level-3 Equal-Area Scalable Earth-Grid (EASE-Grid) Brightness Temperature data set, collected since 09 July 1987, is a part of the NOAA/NASA Pathfinder Program. The data set consists of gridded data from the Special Sensor Microwave/Imager (SSM/I) and the Special Sensor Microwave Imager/Sounder (SSMIS) in three equal-area projections: Northern Hemisphere, Southern Hemisphere, and full global. The data gridding technique maximizes the radiometric integrity of the original brightness temperature values, maintains high spatial and temporal precision, and involves no averaging of original swath data. Spatial coverage is global and a spatial resolution of 25 km is available for all channels. Channels at 85 and 91 GHz are also provided at 12.5 km. For a given projection, there are 18 brightness temperature files per day and two corresponding time files. Data are contained in flat binary files and are available via FTP as processing is completed.</Summary>
  <Related_URL>
    <URL_Content_Type>
      <Type>VIEW PROJECT HOME PAGE</Type>
    </URL_Content_Type>
    <URL>http://nsidc.org/daac/pathfinder/index.html</URL>
    <Description>About the NOAA/NASA Polar Pathfinder Program</Description>
  </Related_URL>
  <Related_URL>
    <URL_Content_Type>
      <Type>VIEW PROJECT HOME PAGE</Type>
    </URL_Content_Type>
    <URL>http://nsidc.org/data/pathfinders/index.html</URL>
    <Description>NOAA/NASA Polar Pathfinder Data</Description>
  </Related_URL>
  <Related_URL>
    <URL_Content_Type>
      <Type>VIEW RELATED INFORMATION</Type>
    </URL_Content_Type>
    <URL>http://nsidc.org/data/ease/</URL>
    <Description>EASE-Grid Data</Description>
  </Related_URL>
  <IDN_Node>
    <Short_Name>USA/NASA</Short_Name>
  </IDN_Node>
  <Metadata_Name>CEOS IDN DIF</Metadata_Name>
  <Metadata_Version>9.7</Metadata_Version>
  <DIF_Creation_Date>1998-01-01</DIF_Creation_Date>
  <Last_DIF_Revision_Date>2013-01-15</Last_DIF_Revision_Date>
  <DIF_Revision_History>Fixed on of the contacts that was listed as technical contact and should have listed as PI.</DIF_Revision_History>
</DIF>
