Chlorophyll a (chl) observations from Skopun The chl data are analyzed from samples obtained from 18 m depth off the village Skopun (61°54'N, 6°53'W) in very well-mixed water. The chl is measured as µg/L. For more details and data reference, consult: Debes, H.H., Gaard, E., Hansen, B., 2008. Primary production on the Faroe shelf: Temporal variability and environmental influences. Journal of Marine Systems 74, 686–697. doi:10.1016/j.jmarsys.2008.07.004 Eliasen, S.K., Hátún, H., Larsen, K.M.H., Hansen, B., Rasmussen, T.A.S., 2017. Phenologically distinct phytoplankton regions on the Faroe Shelf - identified by satellite data, in-situ observations and model. Journal of Marine Systems 169, 99–110. doi:10.1016/j.jmarsys.2017.01.015 Day Month Year Chl 23 1 1997 0.14 12 2 1997 0.17 21 2 1997 0.25 5 3 1997 0.25 20 3 1997 0.31 2 4 1997 0.57 7 4 1997 0.49 25 4 1997 0.56 12 5 1997 0.58 21 5 1997 1.02 29 5 1997 1.76 12 6 1997 2.58 26 6 1997 2.28 18 7 1997 3.15 14 8 1997 1.12 29 8 1997 0.87 11 9 1997 1.07 26 9 1997 0.83 10 10 1997 0.55 23 10 1997 0.50 11 11 1997 0.29 4 12 1997 0.26 15 4 1998 0.54 7 5 1998 0.53 3 6 1998 2.40 23 6 1998 1.18 2 7 1998 1.58 16 7 1998 1.06 24 7 1998 0.67 31 7 1998 0.98 6 8 1998 0.90 13 8 1998 0.51 20 8 1998 0.68 28 8 1998 1.02 16 4 1999 0.66 29 4 1999 0.71 6 5 1999 0.57 14 5 1999 0.67 20 5 1999 0.81 28 5 1999 4.04 3 6 1999 7.79 10 6 1999 5.64 18 6 1999 3.94 24 6 1999 3.30 1 7 1999 2.00 8 7 1999 2.74 22 7 1999 2.31 5 8 1999 1.73 12 8 1999 1.40 19 8 1999 0.83 27 8 1999 1.70 27 4 2000 1.72 4 5 2000 3.72 11 5 2000 6.79 17 5 2000 9.48 29 5 2000 11.61 2 6 2000 10.49 16 6 2000 6.69 22 6 2000 7.63 29 6 2000 6.06 20 7 2000 0.13 3 8 2000 0.07 10 8 2000 0.05 17 8 2000 0.04 9 4 2001 0.49 26 4 2001 0.54 30 4 2001 0.84 7 5 2001 1.75 18 5 2001 6.98 23 5 2001 8.62 28 5 2001 8.78 6 6 2001 10.64 13 6 2001 11.45 19 6 2001 9.97 26 6 2001 7.44 5 7 2001 1.15 9 7 2001 1.45 16 7 2001 3.34 4 8 2001 0.66 8 8 2001 0.88 15 8 2001 0.99 4 4 2002 0.45 11 4 2002 0.53 19 4 2002 0.54 1 5 2002 0.62 8 5 2002 0.92 16 5 2002 0.81 21 5 2002 0.71 30 5 2002 0.70 7 6 2002 0.90 13 6 2002 1.10 20 6 2002 1.71 4 7 2002 3.47 11 7 2002 3.32 18 7 2002 3.72 7 4 2003 0.56 14 4 2003 0.79 22 4 2003 0.67 29 4 2003 0.87 5 5 2003 1.28 13 5 2003 1.41 19 5 2003 1.73 26 5 2003 1.25 2 6 2003 2.24 16 6 2003 3.79 23 6 2003 2.24 30 6 2003 1.92 7 7 2003 1.69 14 7 2003 2.13 21 7 2003 3.80 30 7 2003 1.01 4 8 2003 0.58 11 8 2003 0.53 18 8 2003 1.01 25 8 2003 1.09 1 9 2003 1.40 8 9 2003 0.63 5 4 2004 0.34 14 4 2004 0.52 19 4 2004 0.53 26 4 2004 0.39 3 5 2004 0.73 11 5 2004 0.84 17 5 2004 1.02 24 5 2004 2.20 1 6 2004 2.88 7 6 2004 2.27 14 6 2004 3.51 21 6 2004 4.42 28 6 2004 8.14 5 7 2004 7.36 12 7 2004 3.36 19 7 2004 0.85 26 7 2004 0.50 2 8 2004 0.59 9 8 2004 0.51 16 8 2004 2.21 23 8 2004 2.74 30 8 2004 1.17 6 9 2004 0.67 7 4 2005 0.46 11 4 2005 0.67 18 4 2005 0.72 26 4 2005 0.45 2 5 2005 0.61 9 5 2005 0.69 17 5 2005 0.99 23 5 2005 1.64 30 5 2005 1.15 6 6 2005 1.44 13 6 2005 1.92 20 6 2005 2.81 1 7 2005 1.17 4 7 2005 1.23 11 7 2005 0.85 18 7 2005 0.79 26 7 2005 1.04 1 8 2005 0.90 8 8 2005 1.39 15 8 2005 1.45 22 8 2005 1.76 6 9 2005 1.80 4 4 2006 0.37 10 4 2006 0.57 18 4 2006 0.65 24 4 2006 0.70 1 5 2006 0.67 8 5 2006 0.87 15 5 2006 2.05 22 5 2006 2.88 29 5 2006 3.20 6 6 2006 2.84 12 6 2006 1.81 19 6 2006 1.19 26 6 2006 0.93 3 7 2006 1.04 10 7 2006 1.01 17 7 2006 0.67 24 7 2006 0.59 31 7 2006 0.68 7 8 2006 0.71 14 8 2006 0.76 21 8 2006 0.66 11 4 2007 0.72 17 4 2007 0.78 23 4 2007 0.80 1 5 2007 1.00 8 5 2007 1.72 15 5 2007 2.96 22 5 2007 1.93 29 5 2007 2.43 5 6 2007 1.16 12 6 2007 0.98 19 6 2007 0.95 26 6 2007 0.74 3 7 2007 0.62 10 7 2007 0.74 17 7 2007 0.77 24 7 2007 0.80 31 7 2007 1.26 7 8 2007 0.80 14 8 2007 0.74 21 8 2007 0.46 28 8 2007 0.97 4 9 2007 1.09 10 9 2007 1.33 19 9 2007 1.00 25 9 2007 0.63 1 4 2008 0.34 8 4 2008 0.57 15 4 2008 0.67 22 4 2008 1.01 29 4 2008 1.42 6 5 2008 2.31 14 5 2008 3.40 20 5 2008 2.81 28 5 2008 2.29 3 6 2008 3.02 10 6 2008 4.87 17 6 2008 7.65 24 6 2008 7.64 1 7 2008 3.40 8 7 2008 0.65 15 7 2008 0.56 22 7 2008 0.90 5 8 2008 1.16 14 8 2008 1.36 19 8 2008 1.51 26 8 2008 0.79 2 9 2008 0.48 9 9 2008 0.59 7 4 2009 0.39 14 4 2009 0.62 21 4 2009 0.96 28 4 2009 1.39 5 5 2009 4.32 12 5 2009 7.13 19 5 2009 5.24 26 5 2009 2.15 2 6 2009 3.18 9 6 2009 10.79 16 6 2009 8.70 25 6 2009 1.59 30 6 2009 0.91 7 7 2009 3.06 14 7 2009 3.93 22 7 2009 0.89 27 7 2009 0.64 4 8 2009 0.60 11 8 2009 0.97 18 8 2009 0.67 26 8 2009 0.48 1 9 2009 0.70 30 3 2010 0.40 6 4 2010 0.74 13 4 2010 1.36 20 4 2010 1.89 27 4 2010 2.68 4 5 2010 2.32 11 5 2010 3.99 18 5 2010 3.86 25 5 2010 4.39 2 6 2010 3.28 8 6 2010 2.39 15 6 2010 1.05 22 6 2010 0.60 29 6 2010 0.69 6 7 2010 0.81 13 7 2010 0.93 20 7 2010 0.87 27 7 2010 0.81 3 8 2010 0.86 10 8 2010 1.69 17 8 2010 1.11 24 8 2010 0.68 31 8 2010 0.68 7 9 2010 0.49 29 3 2011 0.34 6 4 2011 0.34 12 4 2011 0.32 19 4 2011 0.38 26 4 2011 0.48 3 5 2011 1.02 10 5 2011 1.87 17 5 2011 2.49 25 5 2011 0.72 31 5 2011 0.65 7 6 2011 0.62 14 6 2011 0.85 21 6 2011 0.85 28 6 2011 0.85 5 7 2011 0.84 12 7 2011 0.85 19 7 2011 0.84 26 7 2011 0.82 2 8 2011 0.78 9 8 2011 0.68 17 8 2011 0.60 23 8 2011 0.56 30 8 2011 1.11 6 9 2011 0.33 13 9 2011 0.62 3 4 2012 0.51 11 4 2012 0.48 17 4 2012 0.66 24 4 2012 0.48 2 5 2012 1.21 8 5 2012 2.19 15 5 2012 4.35 22 5 2012 3.36 29 5 2012 3.88 5 6 2012 1.76 12 6 2012 0.89 20 6 2012 1.07 27 6 2012 1.31 3 7 2012 0.67 10 7 2012 0.59 17 7 2012 0.66 24 7 2012 0.89 31 7 2012 0.70 7 8 2012 0.82 14 8 2012 0.77 22 8 2012 0.73 28 8 2012 0.59 5 9 2012 0.57 2 4 2013 0.37 16 4 2013 0.45 23 4 2013 1.04 30 4 2013 0.54 7 5 2013 0.61 14 5 2013 0.72 21 5 2013 1.35 28 5 2013 0.94 11 6 2013 0.70 18 6 2013 0.60 25 6 2013 0.65 5 7 2013 0.65 9 7 2013 0.85 15 7 2013 0.83 23 7 2013 0.63 6 8 2013 0.58 13 8 2013 1.18 20 8 2013 1.42 27 8 2013 0.81 3 9 2013 0.80 1 4 2014 0.45 8 4 2014 0.41 15 4 2014 0.79 22 4 2014 0.65 29 4 2014 0.62 6 5 2014 0.81 13 5 2014 1.18 21 5 2014 1.74 27 5 2014 1.80 3 6 2014 1.18 10 6 2014 1.67 17 6 2014 3.41 24 6 2014 9.59 26 6 2014 10.90 1 7 2014 14.08 8 7 2014 12.73 15 7 2014 7.42 22 7 2014 1.09 31 7 2014 0.63 5 8 2014 2.13 12 8 2014 2.42 19 8 2014 0.72 26 8 2014 0.54 2 9 2014 0.67 9 9 2014 0.55 11 2 2015 0.14 24 2 2015 0.31 10 3 2015 0.26 31 3 2015 0.28 7 4 2015 0.42 14 4 2015 0.49 21 4 2015 0.53 29 4 2015 0.69 5 5 2015 0.85 12 5 2015 0.71 19 5 2015 0.68 26 5 2015 1.20 2 6 2015 1.48 9 6 2015 1.39 16 6 2015 1.01 23 6 2015 1.70 1 7 2015 1.64 8 7 2015 3.13 14 7 2015 5.81 21 7 2015 4.85 27 7 2015 2.08 4 8 2015 3.34 11 8 2015 5.65 18 8 2015 4.41 25 8 2015 3.87 1 9 2015 1.75 8 9 2015 0.79 15 9 2015 0.59 30 9 2015 0.45 13 10 2015 0.54 27 10 2015 0.49 10 11 2015 0.27 24 11 2015 0.35 13 1 2016 0.24 26 1 2016 0.26 9 2 2016 0.29 23 2 2016 0.30 8 3 2016 0.39 22 3 2016 0.54 5 4 2016 0.63 12 4 2016 0.78 19 4 2016 0.61 26 4 2016 0.54 3 5 2016 0.56 6 5 2016 0.56 10 5 2016 0.60 13 5 2016 0.48 17 5 2016 0.60 20 5 2016 0.84 24 5 2016 0.92 27 5 2016 1.34 31 5 2016 2.66 7 6 2016 4.54 14 6 2016 2.67 22 6 2016 2.52 29 6 2016 1.34 7 7 2016 1.60 12 7 2016 2.24 19 7 2016 1.41 27 7 2016 1.56 3 8 2016 1.04 10 8 2016 0.87 16 8 2016 0.36 22 8 2016 0.55 6 9 2016 1.11 13 9 2016 0.84 27 9 2016 0.39 10 10 2016 0.55 25 10 2016 0.35 8 11 2016 0.39 22 11 2016 0.20 10 1 2017 0.19 24 1 2017 0.23 7 2 2017 0.29 28 2 2017 0.59 20 3 2017 0.42 27 3 2017 0.71 3 4 2017 0.66 10 4 2017 0.95 18 4 2017 1.10 24 4 2017 0.93 2 5 2017 1.00 8 5 2017 3.25 15 5 2017 3.36 22 5 2017 4.46 29 5 2017 5.88 6 6 2017 5.33 13 6 2017 7.20 21 6 2017 8.57 28 6 2017 9.05 4 7 2017 3.15 11 7 2017 0.91 18 7 2017 1.21 25 7 2017 1.97 31 7 2017 2.10 8 8 2017 1.68 16 8 2017 0.73 22 8 2017 0.98 29 8 2017 0.72 5 9 2017 0.96 12 9 2017 0.97 19 9 2017 0.94 3 10 2017 0.67 17 10 2017 0.53 31 10 2017 0.40 28 11 2017 0.26 12 12 2017 0.19 9 1 2018 0.21 23 1 2018 0.15 6 2 2018 0.21 20 2 2018 0.25 6 3 2018 0.27 13 3 2018 0.06 20 3 2018 0.30 27 3 2018 0.78 3 4 2018 1.07 10 4 2018 2.01 17 4 2018 1.95 24 4 2018 1.66 1 5 2018 1.46 8 5 2018 1.48 15 5 2018 2.05 22 5 2018 2.20