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. The El Nino typically lasts from 12 to 18 months. 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. A computer model with mathematical equations that describe the physical process of the atmosphere. Good analogs to a pattern over the entire hemisphere are very unusual. The smaller the area over which one attempts to find analogs the more good analogs one will find. Sea surface temperature.