AWS ID: 8909B

     SITE NAME: ARRIVAL HEIGHTS
     LOCATION : LAT 77.90 S  LONG 166.72 E
     HEIGHT   : 200 M (ESTIMATED) 

     DATE ACTIVATED: 24 JAN 1984
     LAST VISITED  : 24 JAN 1984

                        SENSORS SERVICED
         SENSOR           PROBLEM           ACTION TAKEN
  AEROVANE(03-78-05)                          INSTALLED
  PRESSURE GAUGE(4855)                        INSTALLED
  TEMP PROBE EXT                              INSTALLED
  TEMP PROBE INT                              INSTALLED
  HUMIDITY PROBE                              INSTALLED 
  DELTA-T PROBE                               INSTALLED

                        FIELD CALIBRATION
           CALIBRATION                       DIFFERENCE
   VARIABLE    AWS    MEASURED      AS 83/84  AS 82/83  AS 81/82

   PRESSURE  973.1    973.4 MB        -.3 MB     -         -
   TEMP EXT     -        -             -         -         -
   TEMP INT     -        -             -         -         -
   WIND SPD    7.3 M/S 10 M/S(EST)     -         -         -
   WIND DIR    91  DEG  EAST(EST)      -         -         -

                     LABORATORY CALIBRATION
           CALIBRATION                      DIFFERENCE
   VARIABLE    AWS    MEASURED      AS 83/84  AS 82/83  AS 81/82

   PRESSURE 1003.5   1002.9 MB        -.6 MB     -         -
   TEMP EXT     .25      .0  C        -.25 C     -         -
   TEMP INT     -        -             -         -         -
   WIND SPD    .249 M/S/BIT           CAL        -         -
   WIND DIR    OK     N-E-S-W-N       OK         -         - 
   HUMIDITY    .50*BITS-14   %        CAL        -         -
   DELTA  T   .135*(BITS-199) C       CAL        -         -

   COMMENTS:  AWS 8909B WAS INSTALLED AT ARRIVAL HEIGHTS NEAR THE MCMURDO STATION ON ROSS ISLAND.  IT WAS CONSTRUCTED FROM THE NEW AWS STATION ELECTRONICS WITH THE COMPONENTS FROM THE OLD AWS 8904 STATION BROUGHT BACK FROM DOME C.  THE DELTA T PROBE WAS LOCATED AT 22 INCHES AND 90 INCHES.