DQRID : D000127.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
11/06/1998000007/30/19992359Suspect
more
Subject:
TWP/MWR/C2 - Uncertainty in clock time
DataStreams:twpmwrtipC2.a1, twpmwrlosC2.b1
Description:
At ARCS2, the MWR computer clock was not being updated because no NTP time service 
software was installed on the computer. During Nauru99, on 6/24/99, the clock was found to be 3 
minutes and 17 seconds fast. 

Assuming that the time was properly set at installation on 10/26/98 (which is not 
indicated in the installation report) and never reset until 6/24/99, the rate of time drift on 
the computer was about +0.8 seconds per day. However, if the time was not reset since 
integration at AIS on 1/14/98 (which is recorded in my integration notes), then the rate of 
drift is about +0.4 seconds per day.

The computer was replaced and time service started on 7/30/99.
Suggestions: 
Measurements:twpmwrtipC2.a1:
  • tipsky23
  • wet_window
  • tc23
  • tknd
  • tnd31
  • bbn31
  • tkair
  • bbn23
  • r31
  • tkxc
  • tnd23
  • base_time
  • bb31
  • tnd_nom23
  • tipsky31
  • tnd23I
  • actel
  • r23
  • tnd31I
  • tkbb
  • bb23
  • time_offset
  • tnd_nom31
  • actaz
  • tc31
more
twpmwrlosC2.b1:
  • base_time
  • tbsky23
  • ir_temp
  • actel
  • tnd_nom31
  • sky31
  • tc23
  • tknd
  • tkbb
  • actaz
  • tbsky31
  • liq
  • tnd_nom23
  • wet_window
  • sky_ir_temp
  • vap
  • tkair
  • tc31
  • bb23
  • tnd23
  • time_offset
  • bbn23
  • bb31
  • tnd31
  • tkxc
  • bbn31
  • sky23
more

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