SAN DIEGO (CNS) - A Scripps Institution of Oceanography climate scientist and a fellow researcher announced Monday they have developed a way to accurately measure global warming and can tell the difference between naturally occurring and human-caused warming.
The team simulated in a computer model, for the first time, the realistic evolution of global mean surface temperature since 1900, according to a statement released by the University of California, San Diego.
The researchers also created a new method by which they can measure and monitor the pace of anthropogenic global warming, finding that the contribution of human activities to warming in the surface waters of the Pacific Ocean can be distinguished from natural variability.
Former Scripps researcher Yu Kosaka, now at the University of Tokyo, and Shang-Ping Xie, the Roger Revelle Chair in Environmental Science at Scripps, created the simulation by forcing sea surface temperature over the tropical Pacific to follow the observed variability.
"The climate system includes naturally occurring cycles that complicate the measurement of global warming due to the anthropogenic increase in atmospheric greenhouse gases," Xie said. "We can isolate the anthropogenic warming by removing the internally generated natural variability."
Climate policymakers have sought to limit the rise of global temperatures to 2 degrees Celsius above pre-industrial levels. That figure is considered a threshold beyond which society and natural systems are virtually assured of experiencing significant and dangerous instability.
Scientists have estimated that the planet is already roughly 1 degree Celsius warmer at the surface than before the Industrial Revolution.
The 2 degrees target was reaffirmed during the 2015 Conference of the Parties, known as COP21, that was held in Paris last December. Kosaka and Xie's research could provide an easily generated and more accurate means to measure society's success in keeping temperatures below that threshold, according to UCSD.
The National Science Foundation and NOAA supported Xie's contribution to the research. The Japanese Ministry of Education, Culture, Sports, Science and Technology supported Kosaka's.
The San Diego City Council voted, 5-4, Tuesday to proceed with a proposed Housing Navigation Center that will offer services and programs to help homeless residents find housing and obtain medical care, mental health treatment, job training and other supportive services.
The U.S. government said it was starting work Tuesday to “harden” the border crossing from Tijuana, Mexico, to prepare for the arrival of a migrant caravan leapfrogging its way across western Mexico.
Mama's Kitchen is in it's 14th year helping to raise money to provide meals for men, women and children vulnerable to hunger due to critical illnesses.
Willie O'Ree, who played seven seasons with the original San Diego Gulls after becoming the first black to play in the NHL, was inducted into the Hockey Hall of Fame Monday in Toronto.
The prosecution on Tuesday presented its case on against a man accused of pushing an elderly woman in Oceanside - leading to her death.
Police on Tuesday were searching for a man suspected of robbing a smoothie bar at gunpoint in Mira Mesa.
Firefighters struggled to contain the most deadly and destructive wildfire in California history Tuesday while mobile coroner's teams combed the incinerated remains of a once thriving town and its environs looking for more victims of the carnage.
The California State University Tuesday announced accommodations for applicants affected by recent wildfires who are applying for admission to CSU campuses for the fall 2019 term.
The San Diego Superior Court is seeking dedicated residents with sound judgment from throughout the county to serve on the 2019/2020 San Diego County grand jury.