Dust flux, Vostok ice core

Dust flux, Vostok ice core
Two dimensional phase space reconstruction of dust flux from the Vostok core over the period 186-4 ka using the time derivative method. Dust flux on the x-axis, rate of change is on the y-axis. From Gipp (2001).

Saturday, May 17, 2014

A clear example . . .

. . . of the extremely rare "high-heeled-shoe" formation.

Data sourced from van de Wal (2011). The inferred data are accessible from the supplementary material (instructions to retrieve are in the paper, which can be found here).

The heel is a transient signal which is almost certainly an artifact of the method of approximation used by the authors. Even that spike transient, on the scale of our investigation, implies it takes the natural system at least 2000 years to reduce atmospheric CO2 from 400 ppm (roughly today's value) to 380 ppm.

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