The San Francisco Bay-Delta is literally threatened from all sides: rising sea levels from the ocean, disruptions to sediment supply from upstream, and within the Bay-Delta itself, development and other land use changes have left only a tiny fraction (5%) of marshland untouched.
From Yemen to India, and parts of Central America to the African Sahel, about a quarter of the world’s people face extreme water shortages that are fueling conflict, social unrest and migration, water experts said on Wednesday.
With the world’s population rising and climate change bringing more erratic rainfall, including severe droughts, competition for scarcer water is growing, they said, with serious consequences.
Using tax dollars to move whole communities out of flood zones, an idea long dismissed as radical, is swiftly becoming policy, marking a new and more disruptive phase of climate change.
Mayor Kevin Faulconer joined San Diego Fire Chief Colin Stowell and Councilman Chris Cate Wednesday to urge residents to stay on high alert, get prepared and stay informed, citing the historic lightning-sparked fires raging in northern California in stressing the need to be vigilant.
California was caught flat-footed by the climate-driven challenges it has faced last week: extreme temperatures, unseasonable lightning strikes, diminishing water supplies and red flag fire conditions. As a result, CalFire was short on firefighters to battle the blazes and the electric utilities had too little power to serve all of their customers at the same time.
San Diego ocean temperatures hit record territory this past weekend, as a heatwave also baked the San Diego Region. The record comes just weeks after the unseasonably cool ocean temperatures were recorded. Someone has taken the temperature at the end of Scripps Pier every day for more than 100 years. Sunday’s reading tied for the hottest on record 79.5 degrees Fahrenheit. It tied the record that was set just two years ago.
The San Diego County Water Authority announced Monday it is partnering with the Scripps Institution of Oceanography at UC San Diego to better predict atmospheric rivers and improve water management before, during and after those seasonal storms. This month, Scripps’ Center for Western Weather and Water Extremes launched the Water Affiliates Group, which brings together science and hands-on water industry experience to enhance reservoir operations in light of the changing climate. The water authority has a long-running alliance with Scripps.
An international team of researchers has found that dam building in the 20th century offset some of the factors that would have led to a higher rise in sea levels. In their paper published in the journal Nature, the group describes their study of the factors that have led to a rise in global sea levels and what they learned.
The waters off San Diego are home to the two largest kelp forests on the West Coast, and both are being closely watched by local experts who are concerned about the effects of climate change on the underwater groves.
The giant kelp forests off La Jolla and Point Loma are important to the ecosystem, said Ed Parnell, a researcher at the Scripps Institution of Oceanography in La Jolla whose studies focus on coastal ecosystems in Southern California.
Just north of the Golden Gate Bridge, yet a world away from San Francisco, in an unincorporated and oft-overlooked area known as Marin City, sea level rise is rarely the first worry that comes to mind. Traditional flood maps for this predominantly Black and working-class community suggest that the area is safe from rising water until 3 feet or more. But sea level rise is a lot more complicated than just waves breaking over seawalls and beaches disappearing.
