Climate Change News & Discussions

weatheriscool
Posts: 12725
Joined: Sun May 16, 2021 6:16 pm

Re: Climate Change News & Discussions

Post by weatheriscool »

Meltdown Alert: Greenland Ice Sheet Nearing the Point of No Return
By American Geophysical Union April 14, 2023
https://scitechdaily.com/meltdown-alert ... no-return/
Once we emit about 1000 gigatons of carbon, much of the massive ice sheet will melt irreversibly. We’ve emitted 500 gigatons so far.

The Greenland Ice Sheet covers 1.7 million square kilometers (660,200 square miles) in the Arctic. If it melts entirely, global sea level would rise about 7 meters (23 feet), but scientists aren’t sure how quickly the ice sheet could melt. Modeling tipping points, which are critical thresholds where a system behavior irreversibly changes, helps researchers find out when that melt might occur.

Based in part on carbon emissions, a new study using simulations identified two tipping points for the Greenland Ice Sheet: releasing 1000 gigatons of carbon into the atmosphere will cause the southern portion of the ice sheet to melt; about 2500 gigatons of carbon means permanent loss of nearly the entire ice sheet.

Having emitted about 500 gigatons of carbon, we’re about halfway to the first tipping point.

“The first tipping point is not far from today’s climate conditions, so we’re in danger of crossing it,” said Dennis Höning, a climate scientist at the Potsdam Institute for Climate Impact Research who led the study. “Once we start sliding, we will fall off this cliff and cannot climb back up.”
weatheriscool
Posts: 12725
Joined: Sun May 16, 2021 6:16 pm

Re: Climate Change News & Discussions

Post by weatheriscool »

Greenhouse gases continued to increase rapidly in 2022
Carbon dioxide, methane and nitrous oxide rise further into uncharted levels
https://www.noaa.gov/news-release/green ... ly-in-2022
Levels of carbon dioxide (CO2), methane and nitrous oxide, the three greenhouse gases emitted by human activity that are the most significant contributors to climate change, continued their historically high rates of growth in the atmosphere during 2022, according to NOAA scientists.

The global surface average for CO2 rose by 2.13 parts per million (ppm) to 417.06 ppm, roughly the same rate observed during the last decade. Atmospheric CO2 is now 50% higher than pre-industrial levels. 2022 was the 11th consecutive year CO2 increased by more than 2 ppm, the highest sustained rate of CO2 increases in the 65 years since monitoring began. Prior to 2013, three consecutive years of CO2 growth of 2 ppm or more had never been recorded.
User avatar
Time_Traveller
Posts: 2023
Joined: Sun May 16, 2021 4:49 pm
Location: Clermont, Indiana, USA, October 7th 2019 B.C.E

Re: Climate Change News & Discussions

Post by Time_Traveller »

Atmospheric CO2 continues to rise
15-04-2023 07:20

The climate crisis continues to worsen as atmospheric carbon dioxide levels reach an all- time high at 423.01 parts per million (ppm). Greta Thunberg tweeted to comment on how terrifying it is that this has gone almost completely unnoticed.

Mauna Loa is a volcano in Hawaii, where there is the Mauna Loa observatory that takes regular CO2 readings. These readings continue to increase, causing further concern over the climate crisis. The observatory made predictions earlier this year that CO2 levels would average 419.2ppm. The global average last year was 417.2ppm.

This is more than a 50% increase from what it would’ve been in the pre-industrial era, according to the USA National Oceanic and Atmospheric Administration (NOAA). This is extremely dangerous and means the Earth will continue to get warmer, causing extreme weather and the melting of ice caps.
https://northwestbylines.co.uk/environm ... s-to-rise/
"We all have our time machines, don't we. Those that take us back are memories...And those that carry us forward, are dreams."

-H.G Wells.
User avatar
wjfox
Site Admin
Posts: 8663
Joined: Sat May 15, 2021 6:09 pm
Location: London, UK
Contact:

Re: Climate Change News & Discussions

Post by wjfox »

weatheriscool
Posts: 12725
Joined: Sun May 16, 2021 6:16 pm

Re: Climate Change News & Discussions

Post by weatheriscool »

'Devastating' melt of Greenland, Antarctic ice sheets found
Source: NBC
The Greenland and Antarctic ice sheets are now losing more than three times as much ice a year as they were 30 years ago, according to a new comprehensive international study.

Using 50 different satellite estimates, researchers found that Greenland’s melt has gone into hyperdrive in the last few years. Greenland’s average annual melt from 2017 to 2020 was 20% more a year than at the beginning of the decade and more than seven times higher than its annual shrinkage in the early 1990s.

The new figures “are pretty disastrous really,” said study co-author Ruth Mottram, a climate scientist at the Danish Meteorological Institute. “We’re losing more and more ice from Greenland.”

Study lead author Ines Otosaka, a glaciologist at the University of Leeds in the United Kingdom, said speeded-up ice sheet loss is clearly caused by human-caused climate change.
Read more: https://www.nbcnews.com/news/amp/rcna80616
weatheriscool
Posts: 12725
Joined: Sun May 16, 2021 6:16 pm

Re: Climate Change News & Discussions

Post by weatheriscool »

User avatar
wjfox
Site Admin
Posts: 8663
Joined: Sat May 15, 2021 6:09 pm
Location: London, UK
Contact:

Re: Climate Change News & Discussions

Post by wjfox »

User avatar
wjfox
Site Admin
Posts: 8663
Joined: Sat May 15, 2021 6:09 pm
Location: London, UK
Contact:

Re: Climate Change News & Discussions

Post by wjfox »

User avatar
Time_Traveller
Posts: 2023
Joined: Sun May 16, 2021 4:49 pm
Location: Clermont, Indiana, USA, October 7th 2019 B.C.E

Re: Climate Change News & Discussions

Post by Time_Traveller »

Supreme Court deals blow to oil companies by turning away climate cases
April 24, 2023, 2:56 PM BST

WASHINGTON — The Supreme Court on Monday allowed lawsuits brought by municipalities seeking to hold energy companies accountable for climate change to move forward in a loss for business interests.

The court turned away oil company appeals in five cases involving claims brought by cities and municipalities in Colorado, Maryland, California, Hawaii and Rhode Island as part of efforts to hold businesses accountable for the effects of climate change.

The relatively narrow legal issue is whether the lawsuits should be heard in state court instead of federal court. Litigants care because of the widely held view that plaintiffs have a better chance of winning damage awards in state court.

"Big Oil companies have been desperate to avoid trials in state courts, where they will be forced to defend their climate lies in front of juries, and today the Supreme Court declined to bail them out," said Richard Wiles, president of the Center for Climate Integrity, an environmental group.

Business groups expressed disappointment in the Supreme Court's decision, with Phil Goldberg, a lawyer with the National Association of Manufacturers' legal arm, saying that climate issues should be dealt with at the national or international level.
https://www.nbcnews.com/politics/suprem ... -rcna49823
"We all have our time machines, don't we. Those that take us back are memories...And those that carry us forward, are dreams."

-H.G Wells.
weatheriscool
Posts: 12725
Joined: Sun May 16, 2021 6:16 pm

Re: Climate Change News & Discussions

Post by weatheriscool »

wjfox wrote: Sat Apr 22, 2023 1:39 pm


I think this year will probably be a top 3 year and if this nino becomes strong then 2024 could challenge 2016 for first.
Post Reply