% Notes about the CU/Monson Ameriflux instrumentation and data
%  processing in 2007.
%
%
% January 31, 2008
% SpB. (sean.burns@colorado.edu)
% JmB. (jeffrey.beauregard@colorado.edu)

For more complete details see the calendar page at:  

   http://urquell.colorado.edu/calendar/

and the electronic logbook at:

   http://urquell.colorado.edu/logbook/

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-- Two new slow-response (aspirated) T/RH sensors were deployed:

   * on June 14th (day 165) one TRH sensor added at 10.4m 
   * on September 26th (day 269) one TRH sensor added at 4.6m

   prior to deployment these sensors were calibrated at the NCAR/EOL
   calibration facility.

-- there were some problems with the calculation of the 5-min covar
   for the thermocouple data.  missing some of these data?  Also,
   no 1-hz thermocouple data from April 3rd until May 31st.

-- on Feb 27th, added the krypton hygrometer back to the CU tower at
   21.5m (it was removed in late May, 2006).  The long delay in
   getting it back from campbell was a lack of replacement detector 
   tubes.

-- between May 10 (day 130) and July 17 (day 198) our 2nd REBs sensor
   (sn Q96333) was located at the top of the tower (called
   "s_Rnet_2550cm_REBS_B").  On July 17th (day 198), this REBS sensor
   was moved down to 2m (near the mini-tower) where the parameter is
   called, "s_Rnet_0200cm_REBS".
      
-- throughout the summer attempted to use a shading band on a PAR
   sensor at the top of the tower.  This had limited success since the
   shading was not complete throughout the day.  This parameter is,
   "s_Rppfd_in_2550cm_B_shaded".

-- The RM Young prop-vanes (especially the one at 15m) has not been
   working very well for the past few years.  These were sent back for
   re-furbishing.  Also, note that the prop-vane at 15m had previously
   been described as being at "16m".  So notes any notes about the
   "16-m" propvane are actually referring to the 15-m prop-vane.  The
   dates of prop-vane changes are as follows:

     * on may 8th (day 128), replaced the "16m" prop-vane with our
       "spare".  brought the former "16-m" prop-vane back to campus
       (sent back to RM Young).  Also, tried to re-align the 25m
       propvane.

     * on may 30th (day 150.5), started outputting the prop-vane data
       in mV

     * on jul 17th (day 198), tried to replace 15-m cable, still have
       negative voltages.

     * on jul 20th (day 201), removed the 15-m prop-vane from the
       tower (nothing there until oct 10th).

     * on oct 10th (day 283), reconnected the refurbished 15-m
       prop-vane (sn00248).

     * on nov 19th (day 323), re-deployed a refurbuished prop-vane at
       25m.

     * on dec 13th (day 347), started outputting the prop-vane data
       in physical units rather than mV.

-- on sept 13th (day 256), reconnected the repaired AM25T mux to the
   SOIL logger.  It was originally damaged by the lightning strike on
   July 17th, 2006.

-- on October 4th (day 277) a 2-d ati (spas/2Y) sensor was installed at
   9.3m.  (this was to replace the 9m handar that was destroyed by
   lightning on July 17 2006).

-- between December 20th (day 354) to December 29th (day 363) no hi-rate
   data are available since russter2 had a hard drive failure.

-- in July added a webcam to the tower.  see:

      http://urquell.colorado.edu/forestcam/

      [username= "forest", password= "forest"]

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