and everything she provides
that is our sacred source of life.
“Interdependence means that your happiness and mine are connected.”
Along with climate feedbacks there is also climate inertia, which refers to slower feedbacks. Ocean surface temp heats up in response to greenhouse gases in a few decades but the full heating of the ocean will take several centuries. Ice sheets are slow to heat up and begin melting but once they do, they can accelerate. Ice sheet collapse and sea level rise of tens of feet is likely, says Hansen, if we continue to burn fossil fuels at current rates. Paleoclimate evidence shows that sea level rose over 3ft every 20-25 years about 14,000 years ago when the ice sheets were melting strongly. This continued for several centuries. Hansen notes that amplifying feedbacks often occur on shorter time scales than diminishing feedbacks so in a sense the accelerator is in a hurry and the braking is slow. This is one reason why Hansen sees more urgency than the IPCC. Melting ice and shifting of climatic zones is occurring more rapidly than anticipated. Hansen thinks IPCC data does not take into account the acceleration of ice sheet disintegration. Hansen notes that about 90% of Earth’s energy imbalance ends up in the ocean some of which later goes to help melt ice sheets. IPCC models predict that global warming causes increased winter snowfall which offsets melting but Hansen says the warming ocean is not taken into account. Hansen claims that ice sheet melting dynamics, including, ice streams, increased ice bergs, and other processes, were not factored into IPCC models. Human-made black soot aerosols (some possibly from