Daily Archives: June 15, 2026

A friend of ours recently asked whether the accuracy of day-to-day forecasts of weather is affected by climate change. This is a very interesting question whose answer helps to further elucidate the difference between climate and weather.

As it turns out, predictions of the coming weather are nearly exclusively dependent on the observed conditions of the atmosphere in the day (or days) prior to the forecast period. These conditions are known formally as initial conditions. Continue reading →