1219: The Reality of Anthropogenic Climate Change
Author(s): Scott Douglas Jacobsen
Publication (Outlet/Website): Medium (Personal)
Publication Date (yyyy/mm/dd): 2025/05/19
1988 — James E. Hansen
“Global warming has reached a level such that we can ascribe with a high degree of confidence a cause and effect relationship between the greenhouse effect and observed warming… It is already happening now.”
2014 — Katharine Hayhoe
“Climate change is here and now, and not in some distant time or place. The choices we’re making today will have a significant impact on our future.”
2021 — Intergovernmental Panel on Climate Change (IPCC)
“It is unequivocal that human influence has warmed the atmosphere, ocean and land.”
2021 — NASA Goddard Institute for Space Studies (GISS)
“When it comes to climate change: ‘It’s real. It’s us. But we still have choices about how bad we let it get.’”
2021 — Syukuro Manabe
“That problem is about a million times more difficult than understanding climate change.”
2023 — UN Framework Convention on Climate Change (UNFCCC)
“These climate conferences are of course a consensus‑based process, meaning all Parties must agree on every word, every comma, every full stop … Whilst we didn’t turn the page on the fossil fuel era in Dubai, this outcome is the beginning of the end.”
2023 — NOAA Climate Program Office
“A skilled, diverse and fairly compensated workforce is essential to help bolster the nation’s climate resilience.”
2023 — Potsdam Institute for Climate Impact Research (PIK)
“For every additional tenth of a degree of global warming, about 140 million additional people will be exposed to critical heat above 29 degrees Celsius. The vast majority of these live in regions with comparatively low per capita emissions, such as India or Nigeria.”
2024 — World Meteorological Organization (WMO)
“The WMO community is sounding the Red Alert to the world.”
2024 — Global Carbon Project
“Time is running out to meet the Paris Agreement goals.”
2025 — Met Office Hadley Centre
“This study brings important new insights into the future of the AMOC. It shows that aspects of the AMOC may be more robust to a changing climate than some previous research has suggested. However, it doesn’t change our expectation that the AMOC will weaken over the twenty first century, and that this weakening will have important impacts on climate.”
2025 — Copernicus Climate Change Service (C3S)
“All of the internationally produced global temperature datasets show that 2024 was the hottest year since records began in 1850. Humanity is in charge of its own destiny but how we respond to the climate challenge should be based on evidence. The future is in our hands — swift and decisive action can still alter the trajectory of our future climate.”
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