The warming of the ocean in the tropical Pacific increases the strength of the Hadley circulation, and causes the entire tropics to warm. The strengthened hemispheric north-south temperature gradient adds energy to the atmosphere. In particular, the subtropical jet is stronger and its maximum winds extend farther to the east than is normal. This pattern is called the Pacific North American teleconnection pattern. Forecasting The process whereby the value of some variable at some future time is estimated.
Forecasting is one of the primary objectives of science.
The new long-lead forecast system puts seasonal forecasting on firm statistical and dynamical bases through the objective use of the CCA, OCN and CMF tools. Forecast verification any process for determining the accuracy of a forecast by comparing the predicted value of a parameter with the observed value. A computer model with time dependent mathematical characterized mathematical equations that describe the physical process of the atmosphere. A method of forecasting seasonal mean temperature and precipitation through persisting recent interannual trends in those variables. The method selects the most recent adjacent K years which, based on past data, produce the best forecast for the target season.