Global POC Distribution using Ocean Color and WOCE/JGOFS Beam Attenuation & POC Data Wilford D. Gardner Alexey V. Mishonov Mary Jo Richardson Department of Oceanography, Texas A&M University, College Station
WOCE/JGOFS & other data
Regional c p /POC Regressions AtlanticPacific Ross Sea Arabian Sea
SAVE Data Set: Dec-Apr
APFZ Data Set: Dec’97-Mar’98 k6k7nk7s k8k9nk9s OAD, m
Global One Attenuation Depth (OAD) Summer Winter z, m
SeaWiFS products vs c p regressions: SAVE ( ) & APFZ ( ) Data Chlorophyll concentration, mg m -3 Diffuse attenuation coefficient K 490, m -1 Normalized water-leaving radiance L WN(555), mW cm -2 m -1 sr -1 Integrated Chlorophyll CH K, mg m -2
Global Beam Attenuation for OAD Summer Winter c p, m -1
Regional ocean-wide regressions Atlantic Pacific Indian c p, m -1 POC, g m -3
Global POC in OAD Summer Winter POC, g m -3
Global integrated POC in OAD Summer Winter POC, g m -2
Histograms % of area covered by different concentration ranges % of total global POC mass accounted for in areas with different concentration ranges Global total POC mass in OAD layer: Winter Gt C Summer Gt C