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22 Dec, 6 tweets, 3 min read
Since 2003, Greenland's ice sheet has lost 3.5 trillion tons of ice.

'we should expect significant ice loss and several meters of global sea level rise to persist for tens of thousands of years'

That wrecks most major cities.

1-2m sea level rise by 2070?phys.org/news/2020-12-g…
The IPCC still doesn't expect more than 1m by 2100 (hugely disruptive). But there are signs of ice collapse in Antarctica and experts are clear that between 1.5 and 6m is possible. Sea level rise is already causing havoc for some and will rapidly get worse.
'Greenland ice sheet faces irreversible melting' by University of Reading phys.org/news/2020-12-g…

Jonathan M. Gregory et al, Large and irreversible future decline of the Greenland ice sheet, The Cryosphere (2020). DOI: 10.5194/tc-14-4299-2020
👇
tc.copernicus.org/articles/14/42…
A "realistic range" of sea-level rise

"With the current global temperature level and rate of temperature increase I believe that we could get 5 to 10 feet before the end of this century"

'impacts would be truly dangerous & destabilizing' even at 3-4 feet.cbsnews.com/amp/news/clima…
'Twenty-first century sea-level rise could exceed IPCC projections for strong-warming futures'

Martin Siegert
Richard B. Alley
Eric Rignot
John Englander
Robert Corell

DOI:doi.org/10.1016/j.onee…

cell.com/one-earth/full…
Sea-level rise from climate change could exceed the high-end projections, scientists warn

By Jeff Berardelli @WeatherProf

December 23, 2020

cbsnews.com/amp/news/clima…

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Ben See Profile picture
23 Dec
Dear Journalists & Editors,

Please find enclosed a first Thread of 10 Threads with peer-reviewed & IPCC science to help you report on key aspects of the rapidly expanding Ecological-Climate Catastrophe.

First up: Arctic Sea Ice Loss & The Polar Jet Stream Crisis

Cheers,
Ben
👇
1. Arctic Sea Ice Loss by 2035 will be one of a number of threats to global food security as we approach or even exceed 2°C at which point the IPCC says agriculture will shift from being at 'moderate' to 'high' risk.

Thread:
2. The ongoing destruction of Earth's forests appears to have lead us to a crucial tipping point.

Tropical Rainforests look increasingly unlikely to avoid collapse in the coming decades.

Thread:
Read 11 tweets
Ben See Profile picture
23 Dec
The destructive industrial agriculture of free-market and state capitalism fails to feed the world and is rapidly wiping out the insects and forests that humans depend on for survival by wrecking habitats and emitting vast quantities of greenhouse gases.insideclimatenews.org/news/08082019/…
Food systems account for 37% of greenhouse-gas emissions. We must rethink destructive agriculture immediately.

'Very high risks related to.. food system instability are identified at 2°C of global warming.'

Special Report on Climate Change and Land (SRCCL) August 2019
'IPCC Report Shows Food System Overhaul Needed to Save the Climate'

Georgina Gustin August 8, 2019

'the entire food production system, with transportation and packaging included, accounts for as much as 37 percent of total greenhouse gas emissions..'
insideclimatenews.org/news/08082019/…
Read 4 tweets
Ben See Profile picture
23 Dec
Deadly climate change heat waves will hit billions of people by the 2030s or 2040s (some literally unsurvivable without air conditioning) obliterating entire ecosystems and wiping out species but I guess you already know all this thanks to our unbiased, truth-telling free press?
'The incredibly simple solution to saving lives during a heatwave'.

10 Aug 2020 by Laurie Goering

'3.5 billion people expected to be hit by deadly heatwaves by mid-century'

An absurd headline.. weforum.org/agenda/2020/08…
'deadly heat events..indicative of the continuing trend toward increasingly extreme humid heat..a major societal challenge for the coming decades'

advances.sciencemag.org/content/6/19/e…

'The emergence of heat and humidity too severe for human tolerance'.
Read 5 tweets
Ben See Profile picture
22 Dec
Global warming will become so extreme in the next 20 to 60 years that average temperatures in the tropics, subtropics and elsewhere will soon be hotter than the hottest heat waves of the past century, with many regions no longer able to support agriculture.newscientist.com/article/dn1638…
1. 'there is a 90% chance that average temperatures in the tropics and subtropics will be higher than the hottest heat waves of the past century... the effects could be catastrophic'.

newscientist.com/article/dn1638…
2. 'Historical Warnings of Future Food Insecurity with Unprecedented Seasonal Heat'

David. S. Battisti1, Rosamond L. Naylor

Science 09 Jan 2009:
Vol. 323, Issue 5911, pp. 240-244
DOI: 10.1126/science.1164363 science.sciencemag.org/content/323/59…
Read 7 tweets
Ben See Profile picture
22 Dec
Complete loss of summer Arctic sea ice by 2035 (give or take 14 years) will seriously threaten global food security by causing major polar jet stream disruption which will lead to dangerous extreme weather events in the Northern Hemisphere where most crops are grown.

[THREAD]
1.
'Research into three centuries of European tree ring data found evidence of significant changes in the jet stream starting in the 1960s. The recent deviations exceeded normal variations... The result: more extreme drought, flooding and heat waves.'

insideclimatenews.org/news/02022018/…
2. Dr. Louise Sime: "We know the Arctic is undergoing significant changes as our planet warms.. The prospect of loss of sea-ice by 2035 should really be focussing all our minds on achieving a low-carbon world as soon as humanly feasible."phys.org/news/2020-08-e…
Read 9 tweets
Ben See Profile picture
22 Dec
Shouldn't newspapers be telling us summer Arctic sea ice will start to disappear by 2029 disrupting the polar jet stream and causing highly dangerous extreme weather that will seriously threaten the world's major crop-producing regions in the Northern Hemisphere for evermore?
1. The predicted year of disappearance of September sea ice under high-emissions scenarios is 2035 for HadGEM3 (CMIP6).

Mean prediction (and range) for a summer sea-ice-free: CMIP6, 2046 (2029–2066).

doi.org/10.1038/s41558…
2.
Guarino, MV., Sime, L.C., Schröeder, D. et al. Sea-ice-free Arctic during the Last Interglacial supports fast future loss. Nat. Clim. Chang. 10, 928–932 (2020). doi.org/10.1038/s41558…
Read 7 tweets

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