The much-anticipated El Niño has arrived, and it is already proving to be significant. Earlier this year, climate experts predicted the development of an El Niño in the central Pacific region. Over time, more models indicated the likelihood of a strong or “super” El Niño, although scientists cautioned that it was too early to confirm.
In its update for June, the U.S. National Oceanic and Atmospheric Administration (NOAA) issued an El Niño advisory, confirming the presence of warmer conditions in the Pacific Ocean’s Niño 3.4 region. To qualify as an El Niño, temperatures in this area must be 0.5°C above average. Currently, ocean temperatures are nearly 2°C above average, setting a record high for this time of year.
Climate scientist Zeke Hausfather from Berkeley Earth noted that temperatures in the Nino 3.4 region are over 2°C above average, suggesting conditions for a very strong or “super” El Niño. He mentioned that we are already experiencing strong El Niño conditions in early July.
El Niño and La Niña are part of the El Niño Southern Oscillation (ENSO) cycle, impacting the Pacific Ocean region. La Niña brings cooler temperatures, while El Niño brings warmer temperatures. Forecasts anticipate that the El Niño peak may occur in October, with a possibility of extending into November or December.
The previous strongest El Niño was in 2015-2016, with an ocean temperature anomaly of approximately 2.75°C. The rapid transition from La Niña to El Niño this year has raised questions about the underlying reasons for this quick shift.
As projections indicate the potential for a remarkably strong El Niño, discussions around the role of climate change in this phenomenon persist. Experts are uncertain about the specific impact of climate change on the frequency and intensity of El Niño events.
One significant concern is the potential impact on food security in tropical regions due to anticipated droughts. In Canada, the effects of El Niño are expected to bring milder winter temperatures but also drier conditions, raising concerns about increased wildfire risks in Western Canada.
Overall, experts emphasize the seriousness of El Niño and its far-reaching impacts on agriculture, ecosystems, and natural environments.