Data Set Information
DATA_SET_NAME FIELD EXP E REAG CALIBRATED RDR OPTICAL DEPTH V1.0
DATA_SET_ID FEXP-E-REAG-3-RDR-OPT-DEP-V1.0
NSSDC_DATA_SET_ID XD-21A
DATA_SET_TERSE_DESCRIPTION The Reagan Radiometer Archive contains calibrated reduced data record (RDR) optical depth data acquired by the Reagan Sunphotometer during the earth-based 1989 Geologic Remote Sensing Field Experiment (GRSFE).
DATA_SET_DESCRIPTION 
Data Set Overview
    =================
      This data set consists of optical depth measurements made using
      the the Reagan Radiometer (acquired data in July 17 and
      September 29, 1989 at Lunar Lake).  Total instantaneous optical
      depth was obtained from the data through use of Beer's Law, as
      follows.  The set of observations for one channel are plotted
      as natural logarithm of instrument voltage versus secant of
      incidence angle (i.e., Langley Plot).  This allows one to solve
      for the equivalent instrument voltage that would be obtained
      above the atmosphere (the plot intercept) and the optical depth
      (the plot slope).  Instantaneous optical depths were then
      derived by using this intercept and solving for optical depth
      using pairs of voltage values acquired close together in time.
 
      The GRSFE data files consist of tables of time and optical
      depth values computed for each of the 10 Reagan Radiometer
      channels.
 
      Processing Level Id            : 3
      Software Flag                  : N
      Processing Start Time          : 1989-08-10T00:00:00.000
      Processing Stop Time           : 1989-10-05T00:00:00.000
 
 
    Parameters
    ==========
 
      Data Set Parameter 'RADIANCE'
      -----------------------------
        Radiance is the amount of energy per time per projected area
        per steradian.
 
        Data Set Parameter Name        : RADIANCE
        Data Set Parameter Unit        : WATT/(METER*METER)/STERADIAN
        Sampling Parameter Name        : WAVELENGTH
        Sampling Parameter Unit        : MICROMETER
        Minimum Sampling Parameter     : 0.37
        Maximum Sampling Parameter     : 1.03
        Sampling Parameter Resolution  : 0.01
        Sampling Parameter Interval    : N/A
        Minimum Available Sampling Int : N/A
        Noise Level                    : N/A
 
 
    Source Instrument Parameters
    ============================
      Instrument Host ID              : FEXP
      Data Set Parameter Name         : RADIANCE
      Instrument Parameter Name       : RADIANCE
      Important Instrument Parameters : 1
 
 
    Measurement Information
    =======================
 
      Atmospheric Conditions
      ----------------------
        Not Applicable
 
 
      Source
      ------
        The solar irradiance is the source of the energy measured by
        the instrument.
 
 
      Calibration Standard
      --------------------
        Not Applicable
 
 
      Wavelength Calibration
      ----------------------
        Not Applicable
 
 
    Processing
    ==========
 
      Processing History
      ------------------
        Source Data Set ID  : N/A
        Software            : UNK
        Product Data Set ID : FEXP-E-REAG-3-RDR-OPT-DEP-V1.0
DATA_SET_RELEASE_DATE 1991-05-28T00:00:00.000Z
START_TIME 1989-07-17T01:10:45.000Z
STOP_TIME 1989-09-29T02:10:01.000Z
MISSION_NAME GEOLOGIC REMOTE SENSING FIELD EXPERIMENT
MISSION_START_DATE 1989-07-01T12:00:00.000Z
MISSION_STOP_DATE 1989-10-31T12:00:00.000Z
TARGET_NAME EARTH
TARGET_TYPE PLANET
INSTRUMENT_HOST_ID FEXP
INSTRUMENT_NAME REAGAN SUNPHOTOMETER
INSTRUMENT_ID REAG
INSTRUMENT_TYPE SPECTROMETER
NODE_NAME Geosciences
ARCHIVE_STATUS ARCHIVED
CONFIDENCE_LEVEL_NOTE 
Overview
    ========
      Unknown
CITATION_DESCRIPTION Bruegge, C. J., FIELD EXP E REAG CALIBRATED RDR OPTICAL DEPTH V1.0, FEXP-E-REAG-3-RDR-OPT-DEP-V1.0, NASA Planetary Data System, 1991
ABSTRACT_TEXT This data set consists of optical depth measurements made using the the Reagan Radiometer (acquired data in July 17 and September 29, 1989 at Lunar Lake). Total instantaneous optical depth was obtained from the data through use of Beer's Law, as follows. The set of observations for one channel are plotted as natural logarithm of instrument voltage versus secant of incidence angle (i.e., Langley Plot). This allows one to solve for the equivalent instrument voltage that would be obtained above the atmosphere (the plot intercept) and the optical depth (the plot slope). Instantaneous optical depths were then derived by using this intercept and solving for optical depth using pairs of voltage values acquired close together in time.
PRODUCER_FULL_NAME CAROL J. BRUEGGE
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