Entry_ID: NSIDC-0183
Entry_Title: SMEX02 Passive and Active L and S band System (PALS) Data
Group: Data_Set_Citation
   Dataset_Creator: Njoku, E. G. 
   Dataset_Title: SMEX02 Passive and Active L and S band System (PALS) Data
   Dataset_Release_Date: 2003-09-29
   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-0183.html
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Eni
   Middle_Name: G.
   Last_Name: Njoku
   Email: njoku@lor.jpl.nasa.gov
   Phone: 1 818 354-3693 
   Group: Contact_Address
      Address: California Institute of Technology
      Address: Jet Propulsion Laboratory
      Address: M/S 300-233
      Address: Jet Propulsion Laboratory
      Address: California Institute of Technology
      Address: 4800 Oak Grove Drive
      City: Pasadena
      Province_or_State: CA
      Postal_Code: 91109-8099
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: William
   Middle_Name: J.
   Last_Name: Wilson
   Group: Contact_Address
      Address: Jet Propulsion Laboratory
      Address: M/S 300-233

      Address: JPL
      City: Pasadena
      Province_or_State: CA
      Postal_Code: 91109
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Simon
   Middle_Name: H
   Last_Name: Yueh
   Group: Contact_Address
      Address: Jet Propulsion Laboratory
      Address: M/S 300-233
      Address: JPL
      City: Pasadena
      Province_or_State: CA
      Postal_Code: 91109
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Steven
   Middle_Name: J
   Last_Name: Dinardo
   Group: Contact_Address
      Address: Jet Propulsion Laboratory
      Address: M/S 300-233

      Address: JPL
      City: Pasadena
      Province_or_State: CA
      Postal_Code: 91109
      Country: USA
   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
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Spectral/Engineering
   Term: Radar
   Variable_Level_1: Radar Backscatter
End_Group
Keyword: Airborne Radar Sounding
Keyword: Brightness Temperature
Keyword: L- band radar
Keyword: NSIDC
Keyword: NSIDC > National Snow and Ice Data Center
Keyword: Passive Microwave Brightness Temperatures
Keyword: Radar
Keyword: SMEX
Sensor_Name: INFRARED RADIOMETERS
Sensor_Name: RADAR > Radio Detection and Ranging
Sensor_Name: RADIOMETERS
Source_Name: AIRCRAFT
Group: Temporal_Coverage
   Start_Date: 2002-06-25
   Stop_Date: 2002-07-08
End_Group
Data_Set_Progress: complete
Group: Spatial_Coverage
   Southernmost_Latitude: 41.9213
   Northernmost_Latitude: 41.9952
   Westernmost_Longitude: -93.775
   Easternmost_Longitude: -93.4013
End_Group
Group: Location
   Location_Category: CONTINENT
   Location_Type: NORTH AMERICA
   Location_Subregion1: UNITED STATES OF AMERICA
End_Group
Project: SMEX02 > Soil Moisture Experiments in 2002
Project: ISMEX > Iowa Soil Moisture Experiment
Data_Set_Language: English
Originating_Center: NSIDC
Group: Data_Center
   Data_Center_Name: NASA DAAC > NASA DAAC at the National Snow and Ice Data Center
   Data_Center_URL: http://nsidc.org/daac/index.html
   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: 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_Format: ASCII Text (.txt)
End_Group
Group: Reference

   Wilson, W.J., S. H. Yueh, S. J. Dinardo, S. Chazanoff, F. K. Li, and Y. 
   Rahmat-Samii (2001): Passive Active L- and S-band (PALS) Microwave Sensor for 
   Ocean Salinity and Soil Moisture Measurements, IEEE Trans. Geoscience Remote 
   Sensing 39, 1039-1048.

End_Group
Group: Summary

   This data set contains calibrated sensor measurements acquired by the Passive 
   and Active L- and S-band (PALS) airborne microwave sensor during the Soil 
   Moisture Experiment 2002 (SMEX02).   This data set includes radiometer 
   brightness temperatures (TB) at 1.41 and 2.69 GHz, and radar backscatter 
   coefficients at 1.26 and 3.15 GHz, with multiple polarizations and a 45° 
   incidence angle.  The data are geolocated with latitude and longitude 
   information for each data sample.  Included are coregistered nadir and 
   boresight infrared temperatures, altitude, and attitude information. Radar and 
   radiometric studies are relevant to SMEX02 because the data indicates wet soil 
   versus dry soil based on differences in emissivity in the microwave spectral 
   region. 

    Data are provided as ASCII files for each flight line and day of the mission. 
   Ten flight lines were flown each day.  Flights took place on June 25, 27, and 
   July 1, 2, 5, 6, 7, 8 2002. Data are available via FTP. 

   
These data were collected as part of a validation study for the Advanced 
   Microwave Scanning Radiometer - Earth Observing System (AMSR-E). AMSR-E is a 
   mission instrument launched aboard NASA's Aqua Satellite on 04 May 2002. 
   AMSR-E validation studies linked to SMEX are designed to evaluate the accuracy 
   of AMSR-E soil moisture data. Specific validation objectives include assessing 
   and refining soil moisture algorithm performance; verifying soil moisture 
   estimation accuracy; investigating the effects of vegetation, surface 
   temperature, topography, and soil texture on soil moisture accuracy; and 
   determining the regions that are useful for AMSR-E soil moisture measurements.

End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW PROJECT HOME PAGE
   End_Group
   URL: http://nsidc.org/data/amsr_validation/soil_moisture/
   Description: Soil Moisture Experiment (SMEX)
End_Group
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 2003-09-29
Last_DIF_Revision_Date: 2013-07-03
DIF_Revision_History:  updated version