Entry_ID: NSIDC-0301
Entry_Title: AMSR-E/Aqua Daily EASE-Grid Brightness Temperatures
Group: Data_Set_Citation
   Dataset_Creator: Knowles, K., M. Savoie, R. Armstrong, and M. Brodzik. 
   Dataset_Title: AMSR-E/Aqua Daily EASE-Grid Brightness Temperatures
   Dataset_Release_Date: 2006-12-08
   Dataset_Release_Place: Boulder, Colorado USA
   Dataset_Publisher: NSIDC DAAC: NASA DAAC at the National Snow and Ice Data Center
   Online_Resource: http://nsidc.org/data/nsidc-0301.html
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Kenneth
   Last_Name: Knowles
   Group: Contact_Address
      Address: National Snow and Ice Data Center
      Address: National Snow and Ice Data Center
      Address: CIRES, 449 UCB
      Address: University of Colorado
      City: Boulder
      Province_or_State: CO
      Postal_Code: 80309-0449
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Matthew
   Last_Name: Savoie
   Email: savoie@nsidc.org
   Group: Contact_Address
      Address: National Snow and Ice Data Center
      Address: CIRES, 449 UCB
      Address: University of Colorado
      City: Boulder
      Province_or_State: CO
      Postal_Code: 80309-0449
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Richard
   Last_Name: Armstrong
   Email: rlax@nsidc.org
   Phone: 1 303 492-6199 
   Fax: 1 303  492-2468 
   Group: Contact_Address
      Address: National Snow and Ice Data Center
      Address: National Snow and Ice Data Center
      Address: CIRES 449 UCB
      Address: University of Colorado
      City: Boulder
      Province_or_State: Colorado
      Postal_Code: 80309-0449
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Richard
   Last_Name: Armstrong
   Email: rlax@nsidc.org
   Phone: 1 303 492-6199 
   Fax: 1 303  492-2468 
   Group: Contact_Address
      Address: National Snow and Ice Data Center
      Address: National Snow and Ice Data Center
      Address: CIRES 449 UCB
      Address: University of Colorado
      City: Boulder
      Province_or_State: Colorado
      Postal_Code: 80309-0449
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Mary J.
   Last_Name: Brodzik
   Email: brodzik@nsidc.org
   Group: Contact_Address
      Address: National Snow and Ice Data Center
      Address: National Snow and Ice Data Center
      Address: CIRES, 449 UCB
      Address: University of Colorado
      City: Boulder
      Province_or_State: CO
      Postal_Code: 80309-0449
   End_Group
End_Group
Group: Personnel
   Role: Technical Contact
   First_Name: NSIDC
   Last_Name: User Services
   Email: nsidc@nsidc.org
   Phone: 1 303 492-6199 x
   Fax: 1 303  492-2468 x
   Group: Contact_Address
      Address: National Snow and Ice Data Center
      Address: CIRES, 449 UCB
      Address: University of Colorado
      City: Boulder
      Province_or_State: CO
      Postal_Code: 80309-0449
      Country: USA
   End_Group
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Spectral/Engineering
   Term: Microwave
   Variable_Level_1: Brightness Temperature
End_Group
ISO_Topic_Category: Climatology/Meteorology/Atmosphere
Keyword: AMSR-E
Keyword: Brightness Temperature
Keyword: cylindrical
Keyword: Ease
Keyword: EASE-Grid
Keyword: Global
Keyword: Gridded Data
Keyword: inverse-distance squared
Keyword: Lambert azimuthal
Keyword: Northern Hemisphere
Keyword: Passive Microwave
Keyword: Passive Microwave Brightness Temperatures
Keyword: Remote Sensing
Keyword: Southern Hemisphere
Keyword: Spatially Resampled Brightness Temperatures
Keyword: Swath
Sensor_Name: AMSR-E > Advanced Microwave Scanning Radiometer-EOS
Source_Name: AQUA > Earth Observing System, AQUA
Group: Temporal_Coverage
   Start_Date: 2002-06-19
   Stop_Date: 2011-09-27
End_Group
Data_Set_Progress: in work
Group: Spatial_Coverage
   Southernmost_Latitude: -90
   Northernmost_Latitude: 90
   Westernmost_Longitude: -180
   Easternmost_Longitude: 180
End_Group
Group: Location
   Location_Category: GEOGRAPHIC REGION
   Location_Type: GLOBAL
End_Group
Group: Location
   Location_Category: GEOGRAPHIC REGION
   Location_Type: NORTHERN HEMISPHERE
End_Group
Group: Location
   Location_Category: GEOGRAPHIC REGION
   Location_Type: SOUTHERN HEMISPHERE
End_Group
Group: Data_Resolution
   Latitude_Resolution: 25 km
   Longitude_Resolution: 25 km
   Temporal_Resolution: 1 day
End_Group
Project: EOSDIS > Earth Observing System Data Information System
Group: Quality

   Extensive quality control procedures are followed in the production of the 
   AMSR-E/Aqua L2A Global Swath Spatially-Resampled Brightness Temperatures 
   (AE_L2A) source data. See the Quality Assessment section of the AE_L2A 
   documentation for more information. The gridding procedure assumes that source 
   data brightness temperatures are legitimate, and performs no filtering of 
   input data based on quality flags.

End_Group
Data_Set_Language: English
Originating_Center: NSIDC_DAAC
Group: Data_Center
   Data_Center_Name: NSIDC > National Snow and Ice Data Center
   Data_Center_URL: http://nsidc.org
   Group: Personnel
      Role: Data Center Contact
      First_Name: NSIDC
      Last_Name: User Services
      Email: nsidc@nsidc.org
      Phone: 1 303 492-6199 
      Fax: 1 303  492-2468 
      Group: Contact_Address
         Address: National Snow and Ice Data Center
         Address: CIRES, 449 UCB
         Address: University of Colorado
         City: Boulder
         Province_or_State: CO
         Postal_Code: 80309-0449
         Country: USA
      End_Group
   End_Group
End_Group
Group: Distribution
   Distribution_Media: FTP
   Distribution_Size: 1 - 2 MB
   Distribution_Format: Binary
End_Group
Group: Reference

   Ashcroft, P. and F. Wentz. 2000. Algorithm Theoretical Basis Document for the 
   AMSR Level-2A Algorithm, Revised 03 November. Santa Rosa, California USA: 
   Remote Sensing Systems.

   Brodzik, M. J. and K. W. Knowles. 2002. 'EASE-Grid: A Versatile Set of 
   Equal-Area Projections and Grids' in M. Goodchild (Ed.) Discrete Global Grids. 
   Santa Barbara, California, USA: National Center for Geographic Information & 
   Analysis. 

   Knowles, Kenneth W. 1993. Points, Pixels, Grids, and Cells -- A Mapping and 
   Gridding Primer. Unpublished report to the National Snow and Ice Data Center, 
   Boulder, Colorado USA. 

   Knowles, Kenneth W. Intercomparison of Resampling Methods for SMMR Pathfinder 
   in EASE-Grid Format. Unpublished report to geospatialmethods.org, Boulder, 
   Colorado USA.

End_Group
Group: Summary

   This document pertains to two data sets: AMSR-E/Aqua Daily EASE-Grid 
   Brightness Temperatures (NSIDC-0301) and AMSR-E/Aqua Daily Global 
   Quarter-Degree Gridded Brightness Temperatures (NISDC-0302). 

   The Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E) 
   instrument on the NASA EOS Aqua satellite provides global passive microwave 
   measurements of the Earth. NSIDC produces AMSR-E gridded brightness 
   temperature data by interpolating AMSR-E data (6.9 GHz, 10.7 GHz, 18.7 GHz, 
   23.8 GHz, 36.5 GHz, and 89.0 GHz) to the output grids from swath space using 
   an Inverse Distance Squared (ID2) method. AMSR-E/Aqua L2A Global Swath 
   Spatially-Resampled Brightness Temperatures (AE_L2A) input source data are used.

   These data are provided in three EASE-Grid projections (north and south 
   Lambert azimuthal and global cylindrical) at 25 km resolution, and in one 
   global cylindrical, equidistant latitude-longitude projection at 0.25 degree 
   (quarter-degree) resolution. For both data sets, spatial coverage is global, 
   data are daily, and coverage begins 19 June 2002 and ends 27 September 2011. 

   Data are provided via FTP. Brightness temperature data (in tenths of kelvins) 
   are two-byte unsigned integers and time files are two-byte signed integers.

End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW RELATED INFORMATION
   End_Group
   URL: http://nsidc.org/data/nsidc-0302.html
   Description: AMSR-E/Aqua Daily Global Quarter-Degree Gridded Brightness Temperatures
End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW RELATED INFORMATION
   End_Group
   URL: http://nsidc.org/data/ae_l2a.html
   Description: AMSR-E/Aqua L2A Global Swath Spatially-Resampled Brightness Temperatures (Tb)
End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW RELATED INFORMATION
   End_Group
   URL: http://nsidc.org/data/nsidc-0032.html
   Description: DMSP SSM/I Pathfinder Daily EASE-Grid Brightness Temperatures
End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW RELATED INFORMATION
   End_Group
   URL: http://nsidc.org/data/ease/
   Description: EASE-Grid Data
End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW RELATED INFORMATION
   End_Group
   URL: http://nsidc.org/data/nsidc-0071.html
   Description: Nimbus-7 SMMR Pathfinder Daily EASE-Grid Brightness Temperatures
End_Group
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 2006-12-08
Last_DIF_Revision_Date: 2013-07-18
DIF_Revision_History:  added missing creators