Ocean currents intertwine like a sticky web: every disturbance leaves a trace that doesn't disappear instantly. Scientists used to think that random jolts in this web were forgotten right away, but new research shows that in the Niño 3 region, noise remembers itself for more than two months. This memory strengthens the link between El Niño in the Pacific and the Indian Ocean Dipole.

The method works like this: build a simple linear model where random forcing can be with or without memory. Then tune the parameters so the model reproduces observed correlations. Next, compute the information flow between variables: it shows who influences whom. It turns out the Pacific stabilizes the dipole, while the dipole excites the Pacific. Accounting for noise memory makes these flows stronger, especially in the Niño 3 region.

The sticky web of ocean connections turned out to be even clingier than thought: a disturbance that hits the Niño 3 node lingers there longer than a seasonal cycle. Noise memory, like a viscous thread, stretches El Niño's influence on the Indian Ocean Dipole and back. Now climatologists can see where the web doesn't break but merely sags slightly under the weight of randomness.