MERIS Level3 demonstration products

• MERIS level 2 products have been processed with MEGS 7.4 and IPF version 5 and higher
• MERIS level 3 products are referenced on a 9 km global sinusoidal grid

Specific information concerning the MGVI level-3 products:

• MERIS level 3 products have been generated on G-POD using MGVIL3 3.2 (JRC).
• Product format description (PDF file) and Theoretical Basis Document (PDF file)
• History of the modifications is available here.

Specific information concerning all other MERIS level-3 products:

• The products are also generated daily on a 4.6 km resolution grid a few days after acquisition. Please access the yearly repositories from the table below (in green), or via
  http://envisat.esa.int/ml3/
  Data are to be found under the subdirectories:
  <type>/<year>/daily
• MERIS level 3 products have been generated on G-POD using MKL3 3.0 (Acri) and BEAM-L3 3.3 (Brockmann-Consult)
• Products format and algorithm description (PDF file).
• A specific netCDF-ASCII conversion tool "l3_nc_dump" is available (linux binary and source code)
• BEAM 3.6 can read the products (see here)
• History of the modifications.

Available Products:

code	Product	Data available
n412	Normalised water leaving radiance at 412 nm (n412)	Monthly: 2002 2003 2004 2005 2006 2007 2008 2009 2010 Daily: 2002 2003 2004 2005 2006 2007 2008 2009 2010
n443	Normalised water leaving radiance at 443 nm (n443)	Monthly: 2002 2003 2004 2005 2006 2007 2008 2009 2010 Daily: 2002 2003 2004 2005 2006 2007 2008 2009 2010
n490	Normalised water leaving radiance at 490 nm (n490)	Monthly: 2002 2003 2004 2005 2006 2007 2008 2009 2010 Daily: 2002 2003 2004 2005 2006 2007 2008 2009 2010
n510	Normalised water leaving radiance at 510 nm (n510)	Monthly: 2002 2003 2004 2005 2006 2007 2008 2009 2010 Daily: 2002 2003 2004 2005 2006 2007 2008 2009 2010
n560	Normalised water leaving radiance at 560 nm (n560)	Monthly: 2002 2003 2004 2005 2006 2007 2008 2009 2010 Daily: 2002 2003 2004 2005 2006 2007 2008 2009 2010
chl1	Chlorophyll-a, case-1 water (chl1) Description	Monthly: 2002 2003 2004 2005 2006 2007 2008 2009 2010 Daily: 2002 2003 2004 2005 2006 2007 2008 2009 2010
t865	Aerosols optical thickness over water at 865 nm (t865)	Monthly: 2002 2003 2004 2005 2006 2007 2008 2009 2010 Daily: 2007 2008 2009 2010
a865	Angstrom alpha coefficient over water at 865 nm (a865) Description	Monthly: 2002 2003 2004 2005 2006 2007 2008 2009 2010 Daily: 2002 2003 2004 2005 2006 2007 2008 2009 2010
t443	Aerosols optical thickness over land at 443 nm (t443)	Monthly: 2002 2003 2004 2005 2006 2007 2008 2009 2010 Daily: 2002 2007 2008 2009 2010
a443	Angstrom alpha coefficient over land (a443)	Monthly: 2002 2003 2004 2005 2006 2007 2008 2009 2010 Daily: 2002 2003 2004 2005 2006 2007 2008 2009 2010
t550	Aerosols optical thickness over land and water at 550 nm (t550)	Monthly: 2002 2003 2004 2005 2006 2007 2008 2009 2010 Daily: 2002 2007 2008 2009 2010
a550	Angstrom alpha coefficient over land and water at 550 nm (a550)	Monthly: 2002 2003 2004 2005 2006 2007 2008 2009 2010 Daily: 2002 2003 2004 2005 2006 2007 2008 2009 2010
t865	Aerosols optical thickness over water at 865 nm (t865)	Monthly: 2002 2003 2004 2005 2006 2007 2008 2009 2010 Daily: 2007 2008 2009 2010
wvcs	Total water vapor column, clear sky (wvcs) Description, Validation	Monthly: 2002 2003 2004 2005 2006 2007 2008 2009 2010 Daily: 2007 2008 2009 2010
absd	ABSOA_DUST flag statistics (absd)	Monthly: 2002 2003 2004 2005 2006 2007 2008 2009 2010 Daily: 2002 2003 2004 2005 2006 2007 2008 2009 2010
mgvi	MERIS Global Vegetation Index Description, Validation	Monthly: 2002 2003 2004 2005 2006 2007 2008 2009
mgvi-plc	MERIS Global Vegetation Index/Plate-Carree	Monthly: 2002 2003 2004 2005 2006 2007 2008 2009