“There have been many climate warnings issued in the past few decades, but the latest one is more like an air-raid siren than an alarm clock with an overworked snooze button.”
Human activities are estimated to have caused approximately 1.0°C of global warming above pre-industrial levels with a likely range of 0.8°C to 1.2°C. Global warming is likely to reach 1.5°C between 2030 and 2052 if it continues to increase at the current rate (high confidence). — IPCC
The magnitude of the changes in climate effects that would be produced by the least stringent action alternative (Alternative 1) by the year 2100 is roughly a 0.6 ppm higher concentration of CO2, three thousandths of a degree increase in temperature rise, a small percentage change in the rate of precipitation increase, about 0.06 centimeter (0.02 inch) of sea-level rise, and an increase of 0.0004 in ocean pH.— NHTSA
Avoiding overshoot and reliance on future large-scale deployment of carbon dioxide removal can only be achieved if global CO2 emissions start to decline well before 2030 (high confidence) — IPCC
Alternative 7, the lowest CO2 emissions alternative, would result in CO2 concentrations of 687.4 ppm, an increase of 0.15 ppm compared with the No Action Alternative. — NHTSA
“First, the administration proposes vehicle efficiency policies that would do almost nothing [to fight climate change]. Then [the administration] makes their impact seem even smaller by comparing their proposals to what would happen if the entire world does nothing.”
An 11 percent decline slope is the inverse of doubling your fossil economy every 7 years — so, halving every 7 years. Try to imagine half the numbers of commercial passenger flights in 2025 as today, or half the numbers of gas-powered engines. Half the numbers of WalMart SuperStores bringing full cargo ships from Shenzhen to Houston. Then halve that by 2032 and again by 2039. You get the picture. Phasing out the worst fossil fuels in favor of the less evil heritage fuels (sunlight, wind, firewood), will not bring carbon back into the safety zone fast enough.
The warming from the pre-industrial period to the present will persist for centuries to millennia and will continue to cause further long-term changes in the climate system, such as sea-level rise, with associated impacts (high confidence), but these emissions alone are unlikely to cause global warming of 1.5°C (medium confidence).
“Switchgrass is also aptly known as “Panic Grass,” a pretty good coinage for an attempt to run a superpower on hay.”
Pathways limiting global warming to 1.5°C with no or limited overshoot would require rapid and far-reaching transitions in energy, land, urban and infrastructure (including transport and buildings), and industrial systems (high confidence). These systems transitions are unprecedented in terms of scale, but not necessarily in terms of speed, and imply deep emissions reductions in all sectors, a wide portfolio of mitigation options and a significant upscaling of investments in those options (medium confidence).— IPCC
Air Burner turning forestry slash to biochar—courtesy Kelpie Wilson
Cereal and agroforestry crop waste can go through several transformations — mashed for leaf protein extraction, fed to cattle or fish, fermented and distilled, dried for barn fodder, placed into rainwater filters, and carbonized for energy — before returning to the soil to support new crop growth as compost and biochar. Ultimately rewarded in this way, soils are rejuvenated, robust, resilient and ready to provide again for future generations.