% Notes about the data processing and instrumentation in 2004.
%
%
% May 4, 2005
% SpB.

For more complete details see the calendar page at:  

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

and the logbook at:

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


1. Intermittent power problems with the soil and tree data loggers
between March-June 2004 caused some of these data to be lost.

2. We were never able to borrow back the K&Z CNR1 sensor from Peter
Blanken so there are no longwave radiation or upwelling shortwave
radiation data for the entire year (these columns are left as NaNs).

3. Borrowed a KZ pyranometer from NCAR/EOL which was installed on Feb
13th to measure downwelling shortwave radiation.  However, there was a
bad connector to this instrument so it only worked intermittently
throughout the year (note: the connector was replaced on Feb 11,
2005).

4. The 12.5m li-7500 stopped working from June 18-22.  This caused the
21.5m sonic anemometer to also stop working.  On June 22nd the li-7500
was disconnected and the 21.5m sonic started working again.  The
li-7500 was reconnected on July 15, 2005.

5. From August 9-13, the hi-rate data archiving process was not
running on russter2.  As a result, there are 5-min averages and
covariance data from this time period, but no 1-hz or 10-hz data.

6. There were intermittent data dropouts in the upward-looking Licor
190-SA sensor (incoming PAR, s_Rppfd_in_25m).  These data were
corrected for using a linear fit between s_Rppfd_in_25m and
s_Rnet_25m_REBS.

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