December 4, 2007
----------------

Posted the first version (V001) of the Level 2 (L2) files for the Sylvania
Wilderness, Michigan old growth forest site (US-Syv).


October 24, 2008
----------------

New L2 files (V002) were posted for the Sylvania Wilderness site.
New files reflect data screened for wind direction, provide corrected
precipitation data for 2005, provide corrected Fg data using a sign
convention consistent with other AmeriFlux sites, and contain corrected
diffuse PAR data.


December 16, 2008
-----------------

Posted V002 Level 3 and 4 files for US-Syv.


January 3, 2011
---------------

Posted new L2 files (V003) for the US-Syv site.  The new files provide
variable names and reporting units adhering to the AmeriFlux network-wide
conventions. The flux and met data from 2001-2006 did not change from
V002.  


June 21, 2013
-------------

Posted new Level 2 (L2) files for the Sylvania Wilderness site.  These new
files mark the fourth version (V004) of L2 files posted for the US-Syv
site.  The V004 files replace all previous versions and reflect a major
reprocessing effort by Ankur Desai.  The new files cover the period 2001
through 2008. 


June 26, 2015
-------------

Posted both sets of new Level 2 (L2) files for the Sylvania Wilderness
(US-Syv) site.  These new files mark the fifth version (V005) of L2
files posted for the US-Syv site.  The V005 files replace all previous
versions and cover the period 2001-2008 and 2012-2014.  The site was not
operational from 2009-2011.  Users should be aware the site set-up was
very different in 2012-2014 from earlier years (2001-2008). As a result,
many time series (CO2 profile, H2O profile, soil temperature and soil
moisture profiles) were discontinued after site operations resumed
in 2012.


October 15,2015
---------------

Posted both sets of new (V006) Level 2 (L2) files for the Sylvania
Wilderness (US-Syv) site.  The V006 files reflect a reprocessing by
Ankur Desai and replace all previous versions and cover the period
2001-2008 and 2012-2014.  The site was not operational from 2009-2011.
Users should be aware the site set-up was very different in 2012-2014
from earlier years (2001-2008). As a result, many time series (CO2
profile, H2O profile, soil temperature and soil moisture profiles)
were discontinued after site operations resumed in 2012.  


April 22, 2016
--------------

Posted both sets of new (V007) Level 2 (L2) files for the Sylvania
Wilderness (US-Syv) site.  These new data cover the period 2001-2008
and 2012-2015.  The site was not operational from 2009-2011. The
V007 files differ from the V006 files only with the inclusion of 2015
data. Pre-2015 data did not change from V006. Users should be aware the
present site set-up (2012 - present) is very different from earlier years
(2001-2008). As a result, many time series (CO2 profile, H2O profile,
soil temperature and soil moisture profiles) were discontinued after
site operations resumed in 2012.

Details on the processing by CDIAC of the original files provided by
Ankur Desai to produce these V007 L2 files are provided at

ftp://cdiac.ornl.gov/pub/ameriflux/data/Level2/Sites_ByName/Sylvania_Wilderness/with_gaps/report_Sylvania_Wilderness.html