Why is it so difficult to make a good ENSO prediction during the Northern Hemisphere spring?
ENSO is a complicated thing to model. What are the challenges, and how can we overcome them?
El Nino conditions strengthened in March. Where do forecasters think we're going from here?
Guest blogger Mike McPhaden describes what it was like making El Niño forecasts in the mid-1970s, compared with making them today.
You're not the only one wondering if we will see El Niño grow or continue into this coming winter 2015. How useful are March winds and subsurface temperatures across the tropical Pacific Ocean in predicting winter El Niño or La Niña states?