The heat transfer rate is dependent on the temperature difference at a boundary. Indeed, temperature is defined in such a way as to be a measure of how "eager" the object is to accept or transfer heat.
So in La Nina, when there is cold water at the interface with the air, heat will be transferred more readily to the water.
I don't think anyone knows exactly, but yes La Nina absorbs atmospheric heat and releases it into the oceans the opposite of EL nino, going by correlation its seems El ninos are more common and more extreme during periods when the Earth is hottest, and La Nina's more common when the Earth is cooler, this I find fascinating and wish I could find a mechanism that caused this.
Yes. La Nina is the cool current. La Nino is the warm current. Latter part of question I don't know. All to do with how warm the waters are in the west pacific, north of Australia which affects pressure in the atmosphere in the east pacific, I think.
yes but not all oceans, it's in the Pacific. The boundary causes weather-floods and warmer winters.
Since the 1970s, though, El Ni?o and La Ni?a have been occurring with more frequency and intensity.
Some scientists believe that the increased intensity and frequency―now every two to three years―of El Ni?o and La Ni?a events in recent decades is due to warmer ocean temperatures resulting from global warming
I'm pretty sure the answer would be "yes", but exactly what goes on at the atmosphere-ocean boundary?
