November 4, 2007
----------------

The first version of the Level 2 files for the Fermi Agricultural site
(US-IB1) were posted.


September 3, 2008
-----------------

New L2 files (Version 2) were posted for US-IB1 that contain a modified
header record.  The new header is consistent with the header provided
on all other L2 files.  The initial batch of L3 and L4 files were
also posted.


January 15, 2009
----------------

Version 3 L2 files were posted with data through October 2008.  Data from
Nov 2006 - Mar 2007 were revised to remove contamination of the fluxes
by snow on the CO2/H2O sensor.


June 21, 2010
-------------

Version 4 L2 files for US-IB1 were posted.  The new files contain data through
October 2009 and include CO2 concentration data for the first time.


March 18, 2014
--------------

Version 5 (V005) of the Level 2 files for the Fermi Agricultural
site (US-IB1) were posted and provide data from 2005 through 2011.
V005 differs from V004 in the following ways: (1) addition of 2010-2011
data; (2) some minor corrections to precipitation and screening on FC in
years 2006-2009; (3) a new UST-filtering applied to flux terms in the
gap-filled files for 2006-2009; and (4) a revision of soil heat flux
(FG) from 2006-2008.


June 4, 2014
------------

Version 6 (V006) of the Level 2 files for the Fermi Agricultural
site (US-IB1) were posted and provide data from 2005 through 2011.
V006 differs from V005 slightly.  The main change is a re-processing of
2010 data (mainly in April, June and October) by David Cook

Details on CDIAC's processing of the original files submitted by David
Cook and Roser Matamala in order to produce the Level 2 standardized
files may be found at

ftp://cdiac.ornl.gov/pub/ameriflux/data/Level2/Sites_ByName/Fermi_Agricultural/with_gaps/report_Fermi_Agricultural.html