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A Winter Forecast based on the OPI index
7 Nov 2013 04:28 PM |
Riccardo
in Winter Analysis
In this paper, although we are still in autumn, is proposed the seasonal winter 2013/2014 forecast, based on the new numeric model obtained from the recent research about the correspondence between october and winter (DJF – December, January and Februa...
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Typhoons, NAO, and Forecast Uncertainty
22 Oct 2013 02:09 PM |
OKpowdah
in General Analyses & Forecasts
Definitely has been fun to watch the influence of the Pacific on the pattern recently. All the tropical activity in the western Pacific has had really nice clear impacts downstream, translating to the very strong ridging along the west coast. The bigg...
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Typhoon Wipha
12 Oct 2013 10:17 AM |
OKpowdah
in General Analyses & Forecasts
We're watching another potential major Typhoon recurving in the West Pacific, passing close to Japan by day 4 (Tuesday night ET). The story begins though with just some simple extratropical cyclogenesis in the northern Sea of Japan and the amplificati...
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QBO in a two dimensional framework
12 Sep 2013 08:23 AM |
OKpowdah
in General Analyses & Forecasts
The Quasi-Biennial Oscillation (QBO) is a cycle of zonal wind in the equatorial stratosphere with a period that varies between 24 and 30 months. This oscillation is a product of downward propagating alternating wind regimes. The current method of monit...
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