Climate Talk, from Recent Days
Possibly like you, I collect information everyday. Not just “climate” but from other disciplines that I find interesting. I try to learn something new each day. I hope that you will find new information amongst the following data.
Reaching net zero will cost billions more due to interest rate rises:
How good is wood (CO2 etc):
https://www.anthropocenemagazine.org/2023/07/just-how-good-is-wood/
World Weather Attribution:
The largest permafrost depression in the world:
Global climate-change trends detected in indicators of ocean ecology:
Predicted collapse of the AMOC (Atlantic meridional overturning circulation):
https://www.nature.com/articles/s41467-023-39810-w ; “Here we provide statistical significance and data-driven estimators for the time of tipping. We estimate a collapse of the AMOC to occur around mid-century under the current scenario of future emissions.”
Exceeding 1.5°C global warming could trigger multiple climate tipping points:
https://www.science.org/doi/10.1126/science.abn7950#tab-contributors ;
“CONCLUSION: Our assessment provides strong scientific evidence for urgent action to mitigate climate change. We show that even the Paris Agreement goal of limiting warming to well below 2°C and preferably 1.5°C is not safe as 1.5°C and above risks crossing multiple tipping points. Crossing these CTPs can generate positive feedbacks that increase the likelihood of crossing other CTPs. Currently the world is heading toward ~2 to 3°C of global warming; at best, if all net-zero pledges and nationally determined contributions are implemented it could reach just below 2°C. This would lower tipping point risks somewhat but would still be dangerous as it could trigger multiple climate tipping points.”
A Feb 2023 paper, different authors:
https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2021RG000757
“Abstract: Tipping elements are components of the Earth system which may respond nonlinearly to anthropogenic climate change by transitioning toward substantially different long-term states upon passing key thresholds or “tipping points.” In some cases, such changes could produce additional greenhouse gas emissions or radiative forcing that could compound global warming. Improved understanding of tipping elements is important for predicting future climate risks and their impacts. Here we review mechanisms, predictions, impacts, and knowledge gaps associated with 10 notable Earth system components proposed to be tipping elements. We evaluate which tipping elements are approaching critical thresholds and whether shifts may manifest rapidly or over longer timescales. Some tipping elements have a higher risk of crossing tipping points under middle-of-the-road emissions pathways and will possibly affect major ecosystems, climate patterns, and/or carbon cycling within the 21st century. However, literature assessing different emissions scenarios indicates a strong potential to reduce impacts associated with many tipping elements through climate change mitigation. The studies synthesized in our review suggest most tipping elements do not possess the potential for abrupt future change within years, and some proposed tipping elements may not exhibit tipping behavior, rather responding more predictably and directly to the magnitude of forcing. Nevertheless, uncertainties remain associated with many tipping elements, highlighting an acute need for further research and modeling to better constrain risks”
Is it really hotter now than any time in 100,000 years? (D. Kaufman Professor of Earth and Environmental Sciences, Northern Arizona University) :
https://theconversation.com/is-it-really-hotter-now-than-any-time-in-100-000-years-210126?utm_medium=email&utm_campaign=Latest%20from%20The%20Conversation%20for%20July%2029-30%202023&utm_content=Latest%20from%20The%20Conversation%20for%20July%2029-30%202023+CID_7622314e9a9082d8cf563dafd5202f23&utm_source=campaign_monitor_ca&utm_term=Is%20it%20really%20hotter%20now%20than%20any%20time%20in%20100000%20years ; “Even under the most optimistic scenarios of the future — in which humans stop burning fossil fuels and reduce other greenhouse gas emissions — average global temperature will very likely remain at least 1 C above preindustrial temperatures, and possibly much higher, for multiple centuries. This new climate state, characterized by a multi-century global warming level of 1 C and higher, can be reliably compared with temperature reconstructions from the very distant past.”
I recommend — -essays by Andrew Dressler, Atmospheric Scientist at Texas A&M University:
I also recommend — — comparisons of recent temperature increases with the predictions made by the current models used by climatologists and IPCC: Are temperatures this summer hotter than scientists expected?:
Please feel free to comment and/or suggest other links you have found credible.
Thanks for your time. Zack Florence. you can refer to my Profile for more information.
