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| Mean air pressure at topographic height in the interval 1992-2001. The mean is calculated for the 6-hourly samples. For each sample, pressure
at topographic height (taken from ETOPO5) is computed from geopotential heights of the ERA 40
data set, which is given with a 2.5 degree spatial resolution. Spatial interpolation is linear between the ERA 40 grid points. |
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| Difference of average pressure in 1992-2001 and 1982-1991. The
differences are mean in the 1992 window minus mean in the 1982 window.
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| Difference of average pressure in 1992-2001 and 1972-1981. The
differences are mean in the 1992 window minus mean in the 1972 window.
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| Difference of average pressure in 1992-2001 and 1962-1971. The
differences are mean in the 1992 window minus mean in the 1962 window.
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