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Global POC Distribution using Ocean Color and WOCE/JGOFS Beam Attenuation & POC Data Wilford D. Gardner Alexey V. Mishonov Mary Jo Richardson Department.

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Presentation on theme: "Global POC Distribution using Ocean Color and WOCE/JGOFS Beam Attenuation & POC Data Wilford D. Gardner Alexey V. Mishonov Mary Jo Richardson Department."— Presentation transcript:

1 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

2 WOCE/JGOFS & other data

3 Regional c p /POC Regressions AtlanticPacific Ross Sea Arabian Sea

4 SAVE Data Set: Dec-Apr 1987-89

5 APFZ Data Set: Dec’97-Mar’98 k6k7nk7s k8k9nk9s OAD, m

6 Global One Attenuation Depth (OAD) Summer Winter z, m

7 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

8 Global Beam Attenuation for OAD Summer Winter c p, m -1

9 Regional ocean-wide regressions Atlantic Pacific Indian c p, m -1 POC,  g m -3

10 Global POC in OAD Summer Winter POC,  g m -3

11 Global integrated POC in OAD Summer Winter POC, g m -2

12 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 - 0.63 Gt C Summer - 0.64 Gt C

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