On the relationship between extra-terrestrial radiation and surface pressure

Gerd Wendler1 and Michael Pook2

(1) Geophysical Institute, University of Alaska Fairbanks, Fairbanks Alaska 99775
(2) Institute of Antarctic and Southern Ocean Studies (IASOS), University of Tasmania, Hobart, Australia

The surface pressure of an Antarctic station displays two minima, one in spring, the other in autumn. It is believed that these minima are caused by radiative forcing, as the gradient of the extra-terrestrial radiationis largest during the two equinoxes. The best correlation (r=0.85) was obtained when the pressure lagged the radition gradient by ten days.

Financial support was obtained in part from a grant to the Alaska Climate Research Center from the State of Alaska, and from NSF, OPP, Grant 94-13879.
1996, Antarctic Science, Vol 8(3), 303-305
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