Southern Ocean

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This transect, which was implemented in 2005, is used to investigate the variability in the upper layer interocean exchanges between South Africa and Antarctica on seasonal and interannual time scales by monitoring the frontal regions. It also helps to close the box formed by AX18 and AX21 to investigate the heat budget in this region with the complement of Argo observations inside the box, and to investigate the relationship between the frontal variability, its transports, and changes in the wind fields.

For more information about the operation of this transect click here.


XBT deployments along AX25


Mean Temperature Section from AX25 XBT Profiles


Temperature Standard Deviation from AX25 XBT Profiles

The figure below shows the standard deviation of the mean temperature section along AX25.


Temperature Space-Time Diagrams from AX25 XBT Profiles

The diagrams below show the temporal and spatial distribution of temperature along AX25 at selected depths.

Display temperature at:

Display temperature residuals* at:

*residuals are obtained by substracting the seasonal cycle