August 17, 2009
---------------

The Version 1 (V001) Level 2 (L2) files for Audubon Grasslands (US-Aud)
were archived and Version 2 (V002) L2 files were posted.  Version 2
contains no changes to previous years, only updates through mid-2009.


October 27, 2009
----------------

The Version 2 Level 2 files for Audubon Grasslands were archived and
Version 3 (V003) L2 files were posted.  Minor revisions (e.g., H) were
made to the 2003 and 2004 data by Tilden Meyers & team.  The V003 files
extend through summer 2009.


March 27, 2014
--------------

Posted the Version 4 (V004) L2 files for the US-Aud site.  V004 provides
data from 2002 through day 270 of 2011.  Users should be wary of the
PAR data (e.g., large year-to-year variations).

Details on the processing performed by CDIAC on the orginal files provided
by Tilden Meyers & team to produce these L2 files may be found at

ftp://cdiac.ornl.gov/pub/ameriflux/data/Level2/Sites_ByName/Audubon_Research_Ranch/with_gaps/report_Audubon_Research_Ranch.html