Breaking Waves: Ocean News

Chinstrap penguins on Zavodovski Island in Antarctica down by two-thirds since 2011, probably due to climate crisis The world’s largest penguin colony has declined by two-thirds since 2011, most likely because of the climate crisis, a study has revealed. Scientists said the rapid demise of chinstrap penguins on Zavodovski, the northernmost of the South Sandwich Islands in Antarctica, increased the risk of a wider ecosystem collapse. Continue reading...

Pennon slashes dividend and launches £550m cash call ‘to drive improved outcomes for customers and communities’ Burnham, take note: water shareholders have their uses The owner of embattled South West Water has slashed its dividend and launched a cash call to investors as it attempts to fund infrastructure investment, days after it was hit by a record £7.9m fine for hundreds of sewage spills. London-listed Pennon said on Wednesday it would tap investors for £550m, as part of a £1bn investment “to drive improved outcomes for customers and communities”. Continue reading...

A farm labor contractor exposed laborers on H-2A agricultural visas to heat-related health hazards, but is still bringing hundreds of migrant farm workers to North Carolina It was 4pm and 90F (32C) when Carlos Vargas Moreno and other farm workers set out to weed a watermelon field in Goldsboro, North Carolina, on 19 July 2022. The work day had begun at 7am and included two 15-minute breaks and a one-hour lunch eaten outdoors. The heat index – what the temperature feels like to the human body when relative humidity is combined with the air temperature – was 98.3F. It was the kind of day that a heat safety app created by the Occupational Safety and Health Administration (Osha) and the National Institute for Occupational Safety and Health (Niosh) defined as “hazardous” for outdoor workers. Continue reading...

Guardian reporters Jonathan Watts and Gabrielle Canon are online answering your questions on climate and extreme weather from what to expect this winter in the UK to the increasing risk of natural disasters. funkymentalist asks: Unrelated to El Niño, what is the likelihood of the AMOC (Atlantic meridional overturning circulation) shutting down? Jon says: I don’t think these two things are unrelated. Everything is affected by climate breakdown. And both El Niño and the slowdown of AMOC are related to the staggeringly huge amounts (see this article on zettajoules which I also referred to above) of extra energy that the oceans are being forced to absorb as a result of greenhouse gas burning. Quick refresher for any readers who are unfamiliar with this topic: “Amoc, or the Atlantic meridional overturning circulation, is a system of ocean currents that brings heat into the northern Atlantic. Warm surface water from the tropics flows north and releases its heat in the subpolar Atlantic, south of Greenland and west of Britain and Ireland. Then it cools and sinks to a depth of between 2,000m to 3,000 metres before returning south as a cold current. Amoc is one of our planet’s largest heat transport systems, moving the equivalent of 50 times the human energy use, and it has a particularly strong impact on the climate in Europe, affects the ocean’s CO2 uptake and oxygen supply, as well as rainfall patterns in the tropics.” Gaby says: The name “El Niño” actually harkens back to long before forecasters used the phenomenon to track global weather patterns. Fishermen off the coast of South America began to track unusually warm water that would show up every few years right around Christmas - thus “The Little Boy” referring to the Christ child in Spanish. Scientists adopted the name, and added “La Niña” as its counterpart (when sea surface temperatures cool), and together they became ENSO - the El Niño Southern Oscillation. This year, though, feel free to call it “El Monstruo Gordo!” It’s going to be a big one. Continue reading...