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Technical User Guide

Our science is underpinned by publications

Guidance on the use of our long-range forecasts

Seasonal forecasting methods and systems

Introduction to seasonal forecasting

Global seasonal forecasting system (GloSea5)

Seasonal forecast calibration

Guide to forecast maps and diagrams

Probability forecast maps guide

Tropical Pacific (Niño region) sea-surface temperature forecasts

Guide to skill assessment

The verification procedures used to measure the performance of the seasonal forecasts are those recommended by the Standardised Verification System (SVS) for long-range forecasts (LRF) developed by the Commission for Basic Systems (CBS) of the World Meteorological Organization (WMO).

Relative operating characteristic (ROC)

Reliability and sharpness diagrams

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