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Ocean Fluxes in CarbonTracker Andy Jacobson, Taro Takahashi, Colm Sweeney, David Ho, Roger Dargaville, and Rik Wanninkhof Andy Jacobson, Wouter Peters, Colm Sweeney, and the CarbonTracker Team Ocean Carbon Cycle Developments Ocean inversions New Takahashi climatology Gas exchange developments Southern Hemisphere anecdote
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Ocean inversions give significantly different fluxes than ∆pCO 2 climatology
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Takahashi et al. (2007) - New ∆pCO 2 Climatology Annual mean flux is -1.22 PgC/yr Referenced to 2000 instead of 1995
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Takahashi et al. (2007) - New ∆pCO 2 Climatology 2.8 million obs
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Takahashi et al. (2007) - New ∆pCO 2 Climatology NEGLIGIBLE Southern Ocean sink NCEP-2 Winds with Sweeney et al. gas transfer
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Gas Transfer Velocity Parameterization Uncertainty Courtesy David Ho Dual-tracer ( 3 He/SF 6 ) Release Experiments
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Wind Speed Uncertainty
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∆pCO 2 - Wind speed Correlations ∆pCO 2 - Wind speed Correlations
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Monthly flux maps, etc. Monthly Flux map projects NOAA AOML/PMEL Jacobson Dependence of flux on winds Tuning of quadratic coefficient Spatial wind biases Utility of atmospheric pCO 2 from cruises Accuracy Dynamic network
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CarbonTracker 2007 release (5w lag, Taka02)
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o3d5w150mi (5w lag, OIF)
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o6d12w300mi (12w lag, OIF)
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oi6d12w300mi (12w lag, OIF, no time smoothing)
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Take-home New ocean flux products on the horizon Different spatial mean IAV soon Your wind product matters Deep SH sites strongly affected by “remote” ( > 1 month) fluxes, in TM5 at least
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Taka ‘02 vs OIF
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