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Environment & Energy
Related: About this forumThe Guardian: Antarctica's heatwaves are a warning to humanity - and we have only a narrow window ...
Antarcticas heatwaves are a warning to humanity and we have only a narrow window to save the planetClimate scientists
Fri 4 Aug 2023 02.43 EDT
Antarcticas sea ice levels are plummeting as extreme weather events happen faster than scientists predicted
Antarctica is currently experiencing dramatic changes at unprecedented rates, marked by repeated extreme events. These include circum-Antarctic summer heatwaves and an autumn heatwave last year, with temperatures soaring up to 40C above the average. Moreover, both last summer and this winter, sea ice extent has reached record lows. These changes have happened even faster than scientists predicted.
These changes coincide with a broader global pattern of extreme air and sea surface temperatures, wildfires, floods, disease and other events deeply impacting ecosystems and society. Scientists have warned society about global climate change and its impacts since the Intergovernmental Panel on Climate Changes first report in the early 1990s. The Antarctic community has done so repeatedly too. These warnings are now being realised.
Antarctica is a crucial component of the Earth system and a sentinel for growing change. As Antarctic scientists, we see the evidence of mounting change, including changes in food webs, rapid change in populations, breeding failure and local ecosystem collapse, with projections of rapid transformation of a region that makes our planet liveable and contributes in extraordinary ways to global biodiversity.
This is a critical moment, impacting our well-being, future generations and ecosystems globally. Confronted by this evidence, we urgently call on nations to intensify and exceed their current commitments to greenhouse gas emissions reductions. An immediate increase in ambition is required to reach net zero and to go beyond it. Pledges are not enough.
Oh! Well! If its happening, faster than scientists predicted, then its not our fault for not acting before now!Fri 4 Aug 2023 02.43 EDT
Antarcticas sea ice levels are plummeting as extreme weather events happen faster than scientists predicted
Antarctica is currently experiencing dramatic changes at unprecedented rates, marked by repeated extreme events. These include circum-Antarctic summer heatwaves and an autumn heatwave last year, with temperatures soaring up to 40C above the average. Moreover, both last summer and this winter, sea ice extent has reached record lows. These changes have happened even faster than scientists predicted.
These changes coincide with a broader global pattern of extreme air and sea surface temperatures, wildfires, floods, disease and other events deeply impacting ecosystems and society. Scientists have warned society about global climate change and its impacts since the Intergovernmental Panel on Climate Changes first report in the early 1990s. The Antarctic community has done so repeatedly too. These warnings are now being realised.
Antarctica is a crucial component of the Earth system and a sentinel for growing change. As Antarctic scientists, we see the evidence of mounting change, including changes in food webs, rapid change in populations, breeding failure and local ecosystem collapse, with projections of rapid transformation of a region that makes our planet liveable and contributes in extraordinary ways to global biodiversity.
This is a critical moment, impacting our well-being, future generations and ecosystems globally. Confronted by this evidence, we urgently call on nations to intensify and exceed their current commitments to greenhouse gas emissions reductions. An immediate increase in ambition is required to reach net zero and to go beyond it. Pledges are not enough.
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The Guardian: Antarctica's heatwaves are a warning to humanity - and we have only a narrow window ... (Original Post)
OKIsItJustMe
Aug 2023
OP
CrispyQ
(40,689 posts)1. The attitude I've encountered is, "It's just bad news. I don't want to hear about it." -nt
Think. Again.
(22,456 posts)2. We are hearing the last alarm bells...
...that we will hear in time to do something, ANYTHING to reduce major damage in the near future.
CousinIT
(12,263 posts)3. Humanity is too indifferent. It will do nothing to save itself. NT
Think. Again.
(22,456 posts)5. Well.....
....if the handful of us that DO care don't get unapologetically aggressive very soon, then we all deserve the fate we have created for ourselves.
BWdem4life
(2,928 posts)6. Actually, scientists thought it would happen this fast but
had to be more conservative in their predictions to avoid appearing "alarmist".
OKIsItJustMe
(21,709 posts)7. J E Hansen: Scientific reticence and sea level rise
https://doi.org/10.1088/1748-9326/2/2/024002
Published 24 May 2007
Abstract
I suggest that a 'scientific reticence' is inhibiting the communication of a threat of a potentially large sea level rise. Delay is dangerous because of system inertias that could create a situation with future sea level changes out of our control. I argue for calling together a panel of scientific leaders to hear evidence and issue a prompt plain-written report on current understanding of the sea level change issue.
Abstract
I suggest that a 'scientific reticence' is inhibiting the communication of a threat of a potentially large sea level rise. Delay is dangerous because of system inertias that could create a situation with future sea level changes out of our control. I argue for calling together a panel of scientific leaders to hear evidence and issue a prompt plain-written report on current understanding of the sea level change issue.