New research out of the University of Bristol's (UK) Cabot Institute contradicts previous studies in regards to the temperature impacts in the tropical regions due to higher concentrations of atmospheric CO2.
Earlier research found that warming due to increasing CO2 was largely confined to the mid-high latitudes, with little, if any impact on long-term temperature trends in the tropical latitudes.
This latest study, which was led by professor Richard Pancost, found that tropical sea surface temperatures were warmer 3-5 million years ago during the early-mid Pliocene Period when atmospheric CO2 concentrations were near 400 ppm and the highest in the past 5 million years. However, as most of us already know, that 400 ppm level was reached once again last summer due to human activity.
The research team focused on the South China Sea, using a combination of geochemical records to reconstruct sea surface temperatures in the far past.
Two out of the three different approaches to reconstruct the ocean temperature records agreed with the results, while the third method only agreed by making assumptions on magnesium and calcium changes in seawater over the past 5 million years.
"These results confirm what climate models have long predicted – that although greenhouse gases cause greater warming at the poles they also cause warming in the tropics. Such findings indicate that few places on Earth will be immune to global warming and that the tropics will likely experience associated climate impacts, such as increased tropical storm intensity," said professor Pancost. (via the university of Bristol report)
Comments that don't add to the conversation may be automatically or manually removed by Facebook or AccuWeather. Profanity, personal attacks, and spam will not be tolerated.
March 2018 ranked as the sixth warmest March on record while Arctic sea ice continues to run well below normal.
The Atlantic Meridional Overturning Circulation (AMOC) has slowed down since the mid-20th century.
High tide coastal flooding has become much more common along the U.S. East Coast over the last 20 years.
The annual maximum Arctic sea ice extent will end up being the second lowest in the satellite record
Extreme winter weather is two to four times more likely to occur in the eastern U.S. when the Arctic is abnormally warm versus abnormally cold.
Warmer and wetter summers may cause some unexpected negative impacts in the near future