Abstract: A generalized skill score is presented for evaluating forecasts in any number of categories. Each forecast in a sample is given a mark; the skill score for the sample is just the average mark. Each mark has an expected ...

Abstract: Correlation coefficients between the Tahiti-Darwin Southern Oscillation Index (SOI) and pressure fields in the New Zealand area show a negative SOI to be associated with anomalous southwest flow on a yearly average basis, ...

Abstract: We have studied the geographical and regional persistence characteristics of wintertime Northern Hemisphere 500 mb height anomalies, focusing particular attention on the behavior of strong anomalies that persist beyond the ...

Abstract: he polar regions have been attracting more and more attention in recent years, fueled by the perceptible impacts of anthropogenic climate change. Polar climate change provides new opportunities, such as shorter shipping ...