Table 1

Zonal statistics characterizing the North Atlantic spring bloom. Median values of each quantity are estimated for each zonal band of latitudes. Median statistics are used to eliminate the influence of rare large outliers. Observations from coastal regions and inland or marginal seas are not included. In addition, individual estimates are included in the zonal statistics only if more than five independent observations of mixed layer depth are used in constructing the monthly mixed layer depth climatology for each 1° by 1° box.

Zone (°N)YDinit (day)YDMaxChl (day)ZMLD (m)Z1%PAR (m) Z MLD Z1%PARIC/IO (%)IOmol photon m2dICmol photon m2 dZC (m) Z C  Z1%PAR
35–401399127632.110.217.51.69310.50
40–4533117181493.95.517.80.96310.63
45–5082143205405.24.228.31.24280.69
50–55112163146354.54.935.21.63230.65
55–60129173147344.35.134.31.75220.65
60–65134178185335.83.739.91.33240.72
65–70137173223336.63.337.41.02240.74
70–75143172192325.44.036.21.37220.70