On Tuesday, global average temperatures rose to a new high of 62.9 degrees Fahrenheit.
But, he added, there may be other factors layered on top of human-caused warming that have helped drive temperatures up so dramatically in recent months.
For instance, a cyclical phenomenon in the Pacific Ocean known as the El Niño-Southern Oscillation causes year-to-year fluctuations by shifting heat in and out of deeper ocean layers.
Global surface temperatures tend to be somewhat cooler during La Niña years and somewhat hotter during El Niño years.
“A big reason we’re seeing so many records shattered is that we’re transitioning out of an unusually long three-year La Niña, which suppressed temperatures a bit, and into a strong El Niño,” Dr. Hausfather said.
Persons:
Zeke Hausfather, El, “, Hausfather
Organizations:
Service, Berkeley, Southern