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Synthesis of Arctic PP I- Historical data (field 14 C-, chl-derived NPP)

Synthesis of Arctic PP I- Historical data (field 14 C-, chl-derived NPP). Paty Matrai Elise Olson Bigelow Laboratory for Ocean Sciences January 28-29, 2008. 14 C-PP : All data points, all depths, all times. Chl a : All data points, all depths, by season.

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Synthesis of Arctic PP I- Historical data (field 14 C-, chl-derived NPP)

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  1. Synthesis of Arctic PPI- Historical data (field 14C-, chl-derived NPP) Paty Matrai Elise Olson Bigelow Laboratory for Ocean Sciences January 28-29, 2008

  2. 14C-PP: All data points, all depths, all times

  3. Chl a: All data points, all depths, by season

  4. Surface (0-5m) chl-NPP [mgC m-3 d-1], all years, seasonal 14C-NPP Chl-NPP Surface (0-5m) 14C-NPP [mgC m-3 d-1], all years, seasonal

  5. Integrated (0-MLD) chl-NPP [mgC m-2 d-1], all years, seasonal Integrated (0-MLD) 14C-NPP [mgC m-2 d-1], all years, seasonal

  6. Surface (0-5m) NPP [mgC m-3 d-1], annual, 1954-2005 Chl-NPP 14C-NPP 0.08 - 21.2 gC m-3 a-1 <0.003 – 2.3 gC m-3 a-1

  7. Integrated (0-MLD) NPP [mgC m-2 d-1], annual, 1954-2005 14C-NPP Chl-NPP 0.07 - 304 gC m-2 a-1 0.07 - 304 gC m-2 a-1

  8. Empirical chlorophyll based algorithmV. Hill Combined dataset ? Log PP = 1.36 + 1.0.LogChl • Average Chlorophyll • Resolute Bay 8.1 mg m-3 • Barents Sea 4.2 mg m-3 • Chukchi Sea1.2 mg m-3 • ANCOVA • Chl 0.8 – 32 mg m-3 • P < 0.01

  9. 14C-observed vs. chl-derived field NPP Observed Calculated

  10. Comparison of Annual Integrated Averages [gC m-2 a-1]

  11. Comparison of Annual Surface Averages gC m-3 a-1

  12. Average vertical profiles, 10o latitude bands, annual, 1954-2005 chl-NPP 20 20 0 0 20 0 14C-NPP 0 80 0 80 0 80

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