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pCO2

Mixed layer depth, current velocity, eddy kinetic energy

SST and Chl

Wind speeds

Mean Significant Wave Height

SO GasEx will take place in the Atlantic sector of the Southern Ocean.

This map shows the approximate area we are considering for SO GasEx:

The study site was chosen to satisfy the following criteria...

• Delta pCO2 of at least 40 µatm to ensure a large enough signal to noise for direct eddy-covariance measurements of CO2.
• Relatively stable water mass (i.e., relatively weak currents and low mesoscale eddy variability) to allow 3He/SF6 patch to be followed for up to 25 days.
• Mixing Layer Depth less than 50 to 70 m.
• Relatively high wind speeds, long fetch and large waves.
• Proximity to Punta Arenas (Chile) to minimize transit time.

Below are background plots and materials used during site selection...

• pCO2 (from Taro Takahashi)
• Mixed layer depth, current velocity, eddy kinetic energy (from Janet Sprintall)
• SST and Chl (from Pete Strutton)
• Wind speeds (from Mary-Elena Carr and Andy Jacobson)
• Mean Significant Wave Height (from David Woolf)

Also, look at the document about effect of delta pCO2 on uncertainty in direct covariance measurements of CO2 flux in the Downloads section.

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