How close the world is to a catastrophic collapse of giant ocean currents is unknown, making halting global warming more critical than ever, scientists say
The Uninhabitable Earth, Annotated Edition The facts, research, and science behind the climate-change article that explored our planet’s worst-case scenarios.
“Indeed, absent a significant adjustment to how billions of humans conduct their lives, parts of the Earth will likely become close to uninhabitable, and other parts horrifically inhospitable, as soon as the end of this century.”
‘The Models Are Too Conservative’: Paleontologist Peter Ward on What Past Mass Extinctions Can Teach Us About Climate Change Today [Note that anyone that doesn't think the last petrodollar is the center of the world thinks “Conservative” means leaving room for error, not meaning leaving room to feel too comfortable. ]
. . . these greenhouse extinctions are devastating. The most recent one was the Paleocene-Eocene Thermal Maximum, and that was caused almost entirely by methane. So the scariest thing we’re seeing today is the liberation of methane from higher latitudes, and it’s happening far faster than anybody ever predicted.
Did you see the news about the Larsen ice shelf? It’s starting to break off. I spent four expeditions down there, just to the north of that, and the amount of retreat is huge. The reason this is important is Antarctica has always been used by the naysayers to say, At least in Antarctica we’re not seeing retreating glaciers. Well, now we are — we really are.
And it seems as though, [while] the IPCC predictions have been relatively on-target on emissions and warming, that the predictions on ice loss have been far too conservative, and things are happening much faster than anybody expected.
The Gulf of Alaska cod populations appears to have taken a nose-dive.
The decline is expected to substantially reduce the gulf cod harvests that in recent years have been worth — before processing — more than $50 million to Northwest and Alaska fishermen who catch them with nets, pot traps, and baited hooks set along the sea bottom.
Barbeaux says the warm water, which has spread to depths of more than 1,000 feet, hit the cod like a kind of a double-whammy. Higher temperatures sped up the rate at which young cod burned calories while reducing the food available for the cod to consume.
“There are no cod left in Cape Cod,” said a New England chef
Due to decades of overfishing, coupled with warming oceans, fish counts within New England's cod fisheries have dwindled to 3 to 4 percent of their historic levels,
The documentary details how last-ditch government fishing bans have fomented a culture of mistrust between the scientific community and those fishermen who rely on full nets to support their families.
Overfishing is depleting oceans across the globe, with 90 percent of the world’s fisheries fully exploited or facing collapse, according to the United Nations Food and Agriculture Organization. From Russian king crab fishermen in the west Bering Sea to Mexican ships that poach red snapper off the coast of Florida, unsustainable fishing practices threaten the well-being of millions of people in the developing world who depend on the sea for income and food, experts say.
But China, with its enormous population, growing wealth to buy seafood and the world’s largest fleet of deep-sea fishing vessels, is having an outsize impact on the globe’s oceans.
Feedback loops from melting itself are driving changes in reflectivity
ada614248.pdf Laboratory Trials of White Ice Paint to Improve the Energy Reflectance Propertiesof the Glacial-Ice Runway Surface
Pure snow generally has a visible albedo of .95, meaning it reflects more than 95 percent of the visible light that hits it. Desert sand reflects about 40 percent (albedo of 0.4), and pure soot reflects less than ten percent of incoming light (albedo 0.1)
By the way, radiative forcing is net heat from greenhouse gasses.
The big deal on losing albedo, is it is harder to grow it back than to lose it.
quantitative evidence that heat input through the open water fraction is the primary driver of seasonal and interannual variations in Arctic sea ice retreat. Analyses of satellite data (1979–2014)
“Cultivating soil continuously for too long destroys the bacteria which convert the organic matter into nutrients,” says Mary Scholes, who is a Professor in the School of Animal, Plant and Environmental Sciences at Wits University.
Although improved technology – including the unsustainably high use of fertilisers, irrigation, and ploughing – provides a false sense of security, about 1% of global land area is degraded every year. In Africa, where much of the future growth in agriculture must take place, erosion has reduced yields by 8% and nutrient depletion is widespread.
Generating three centimeters [ 2.54cm = 1 inch ] of top soil takes 1,000 years,
soil scientists fear that we are wasting and damaging our topsoil—the layer in which most of our food grows—at an entirely unsustainable rate.
The Brazilian senate is set to vote on a bill that could see the eight-year-old ban on farming sugarcane for biofuel production in the Amazon lifted. [ Such a sickening idea – repurposing a rainforest to biofuel production!!!!! And there is already worry that the old growth will die because the forest no longer draws enough rainclouds.]