Scientists warn that a crucial ocean current could collapse, altering global weather – the Los Angeles Times

The Atlantic Meridional Overturning Circulation acts as a conveyor belt of ocean water from Florida to Greenland. Along the journey north, water near the surface absorbs greenhouse gases, which sink down as the water cools near Greenland. In this way, the ocean effectively buries the gases deep below the surface (Courtesy of NASA's Goddard Space Flight Center, caption by Ellen T. Gray)

Scientists warn that a crucial ocean current could collapse, altering global weather…The Atlantic Meridional Overturning Circulation, or AMOC, is a system of ocean currents that circulate water in the Atlantic Ocean like a conveyor belt, helping to redistribute heat and regulate global and regional climates. New research, however, warns that the AMOC is weakening under a warming climate, and could potentially suffer a dangerous and abrupt collapse with worldwide consequences…

It’s not just toxic chemicals. Radioactive waste was also dumped off Los Angeles coast – the Los Angeles Times

Sea Floor Sand (by Dimitris Siskopoulos from Alexandroupolis, Greece, CC BY 2.0 via Wikimedia).

For decades, a graveyard of corroding barrels has littered the seafloor just off the coast of Los Angeles. It was out of sight, out of mind — a not-so-secret secret that haunted the marine environment until a team of researchers came across them with an advanced underwater camera…Startling amounts of DDT near the barrels pointed to a little-known history of toxic pollution…but federal regulators recently determined that the manufacturer had not bothered with barrels. (Its acid waste was poured straight into the ocean instead.)…

California’s war on plastic bag use seems to have backfired. Lawmakers are trying again – the Los Angeles Times

Plastic Bags (by wastebusters CC BY-NC-ND 2.0 DEED via Flickr).

According to a report by the consumer advocacy group CALPIRG, 157,385 tons of plastic bag waste was discarded in California the year the law was passed. By 2022, however, the tonnage of discarded plastic bags had skyrocketed to 231,072 — a 47% jump…The problem, it turns out, was a section of the law that allowed grocery stores and large retailers to provide thicker, heavier-weight plastic bags to customers for the price of a dime….

How does sea level rise challenge modern notions of property lines? – Los Angeles Times

Pirate Tower, Laguna Beach, California (by CC BY-NC 2.0 Wayne Hsieh via Flickr).

The (California) Coastal Act is a remarkable commitment to the public trust doctrine, which traces back to Justinian I, who declared in 533 C.E. that “the following things are natural law common to all: the air, running water, the sea, and consequently the seashore.” This notion — that certain lands should be held in trust by the government for the benefit of all people — evolved into English common law, which the United States then adopted and California later wrote into its state constitution…

Volcano? Climate change? Bad luck? – the Los Angeles Times

April 17, 2023 Air Mass RGB imagery courtesy of NOAA.

As winter approached, few anticipated what was about to hit California. Mired in a serious drought, the state was suddenly battered by an onslaught of 31 atmospheric river storms in a matter of months. While the number alone isn’t exceptional, the location, intensity and duration of these storms had a transforming effect on California’s climate. Record snowfall. Deadly flooding…But one thing remains a mystery: Why did so many of these bands of water vapor, many back-to-back, slam into California?

Bomb cyclone, atmospheric river, polar vortex: How our weather terminology has grown with recent wild storms – the Los Angeles Times

March 31 - April 1, 2023 Satellite animation showing weather patterns off the coast of California (courtesy of NOAA)

Californians have been warned over the past few months about weather ranging from a “vicious heat dome” to back-to-back “atmospheric rivers,” and the always-concerning “bomb cyclone.” While it might feel as though recent weather has been dominated by a string of new phenomena, experts say these terms and events are well-established in the scientific world but simply novel to much of general public…