sea level rise – Page 5 – Desdemona Despair

Antarctic sea ice extent for 25 February 2022, was 1.92 million square kilometers (741,000 square miles). The orange line shows the 1981 to 2010 average extent for that day. Graphic: National Snow and Ice Data Center

April 3, 2022

WMO: Antarctic heat, rain, and ice prompt concern – “This event is rewriting record books and our expectations about what is possible in Antarctica”

1 April 2022 (WMO) – Record high temperatures, rain and the collapse of an ice shelf in East Antarctica have prompted questions and concern about the possible role of climate change in the coldest and driest part of the world. Record high temperatures, rain and the collapse of an ice shelf in East Antarctica have […]

John Lawrence and Payton Campbell (unseen at rear) with their children Harlow and Aria inspect a flooded road near their home on 2 March 2022 in Dungay, Australia. Several northern New South Wales towns were forced to evacuate as Australia faced unprecedented storms and the worst flooding in a decade. Photo: Dan Peled / Getty Images

March 29, 2022

Coastal home buyers are ignoring rising flood risks, despite clear warnings and rising insurance premiums

By Risa Palm and Toby W. Bolsen 25 March 2022 (The Conversation) – Apollo Beach, Florida, is a maze of canals lined with hundreds of houses perched right near the water’s edge. The whole community, just south of Tampa, is only about 3 feet above sea level, meaning it’s at risk from storm surge as […]

Satellite view of the Conger/Glenzer (Bowman Island) ice shelf collapse in March 2022. Scientists are concerned because the ice shelf collapsed in East Antarctica, an area that had long been thought to be stable. The collapse in March 2022 was the first time scientists have ever seen an ice shelf collapse in this cold area of Antarctica. Photo: NASA / AP

March 27, 2022

Thinning Antarctic ice shelf finally crumbles after extreme heatwave – “The Glenzer Conger ice shelf presumably had been there for thousands of years, and it’s never going to be there again”

By Isla Binnie 25 March 2022 (Reuters) – An East Antarctica ice shelf disintegrated this month following a period of extreme heat in the region, according to scientists. Satellite images show the 1,200 square-kilometre Conger Ice Shelf collapsed completely on or around March 15. “Possible it hit its tipping point following the #Antarctic #AtmosphericRiver and […]

(a) Total, (b) global, (c) linear, and (d) regional and local nonlinear sea-level rise (SLR) rates for three sites (New Jersey, Cheesequake; Florida, Nassau; Scotland, Kyle of Tongue) are shown with the time of emergence for each site. Model predictions are the mean with 1σ uncertainty. Note variable y-axes. Graphic: Walker, et al., 2022 / Nature Communications

February 21, 2022

Onset of modern sea level rise began in 1863, international study finds – “We can be virtually certain the global rate of sea-level rise from 1940 to 2000 was faster than all previous 60-year intervals over the last 2,000 years”

18 February 2022 (Rutgers University) – An international team of scientists including Rutgers researchers has found that modern rates of sea level rise began emerging in 1863 as the Industrial Age intensified, coinciding with evidence for early ocean warming and glacier melt. The study, which used a global database of sea-level records spanning the last […]

Maps showing regional sea level linear rates of rise (mm/year) from satellite altimetry over three different time periods: (a) 1993–2006, (b) 2007–2020, and (c) 1993–2020. Linear rates of change of relative sea level (ocean and land height changes) from tide gauges over the same time period are also shown (circles). Graphic: Sweet, et al., 2022 / NOAA

February 19, 2022

U.S. coastline to see up to a foot of sea level rise by 2050 – Report projects a century of sea level rise in 30 years – “These numbers mean a change from a single flooding event every 2-5 years to multiple events each year”

15 February 2022 (NOAA) – The United States is expected to experience as much sea level rise by the year 2050 as it witnessed in the previous hundred years. That’s according to a NOAA-led report updating sea level rise decision-support information for the U.S. released today in partnership with half a dozen other federal agencies. […]

Estimated economic impacts of unmitigated climate change on seven geographical regions in the United States. Over the next 50 years, climate change-induced economic losses in the U.S. could total approximately $14.5 trillion in present-value terms. Graphic: Deloitte

February 7, 2022

Climate change-induced losses in the U.S. could total $14.5 trillion by 2070 – “In a climate-damaged world of 2070, the U.S. could lose nearly 4 percent of GDP in that year alone”

By Rachel Koning Beals 26 January 2022 (MarketWatch) – Definitive and deliberate climate action from Wall Street to Washington and beyond could deliver a $3 trillion gain to the U.S. economy over the next 50 years to 2070. But it’s the toll of inaction that would cost the nation nearly five times that amount, a […]

$Satellite view of Antarctica’s Thwaites Glacier on 28 December 2015 (left) and 31 March 2021 (right). On 13 December 2021, Ice scientists at the American Geophysical Union (AGU) meeting in New Orleans warned that great cracks and fissures had opened up both on top of and underneath the Thwaites glacier, one of the biggest in the world, and it may fracture and collapse, possibly within five years. Photo: ESA Sentinel-1$

December 22, 2021

Antarctica’s “doomsday” glacier: how its collapse could trigger global floods and swallow islands – “If Thwaites were to collapse, it would drag most of West Antarctica’s ice with it”

By Ella Gilbert 22 December 2021 (The Conversation) – The massive Thwaites glacier in West Antarctica contains enough ice to raise global sea levels by 65 centimeters if it were to completely collapse. And, worryingly, recent research suggests that its long-term stability is doubtful as the glacier haemorrhages more and more ice. Adding 65 centimeters to global sea levels […]

Map showing the near-surface air temperature differences from the 1981-2010 average for January to September 2021. Data are from the ERA5 reanalysis product. Graphic: C3S / ECMWF

December 12, 2021

State of the Climate in 2021: Past seven years are on track to be the seven warmest on record – “Extreme events are the new norm”

GENEVA, 31 October 2021 (WMO) – Record atmospheric greenhouse gas concentrations and associated accumulated heat have propelled the planet into uncharted territory, with far-reaching repercussions for current and future generations, according to the World Meteorological Organization (WMO). The past seven years are on track to be the seven warmest on record, according to the provisional WMO […]

Projections of annual counts of high-tide flooding (HTF) days for the NOAA Intermediate Sea Level Rise (SLR) scenario. The NOAA minor flooding threshold is used for Honolulu, San Diego and St. Petersburg. The NOAA moderate flooding threshold is used for Boston to highlight a threshold that is not yet routinely exceeded, which is not the case for the Boston minor threshold. The 50th percentile from the ensemble of projections (blue line) and the 10th–90th percentile range (blue shading, with the 90th percentile highlighted in orange) show increasing numbers of HTF days per year. The year of inflection (YOI, open black circle) for each projection corresponds to abrupt increases in the frequency of HTF days, which are highlighted by comparing the projected increases (Δ) over two adjacent ten-year periods (dashed and solid black lines). Graphic: Thompson, et al., 2021 / Nature Climate Change

August 16, 2021

Sunny-day flooding is about to become more than a nuisance – “What’s scary about this paper is the idea of the inflection point. Can we adapt fast enough to keep pace?”

By Jim Morrison 2 August 2021 (WIRED) – During the summer of 2017, the tide rose to historic heights again and again in Honolulu, higher than at any time in the 112 years that records had been kept. Philip Thompson, director of the Sea Level Center at the University of Hawaii, wanted to know why. […]

Time series of climate-related responses to anthropogenic drivers, 1990-2020. Out of the 31 tracked planetary vital signs, 18 were at new all-time record lows or highs in 2020. Data obtained before and after the publication of Ripple and colleagues (2020) are shown in gray and red respectively. For variables with relatively high variability, local regression trend lines are shown in black. The variables were measured at various frequencies (e.g., annual, monthly, weekly). The labels on the x-axis correspond to midpoints of years. Sources and additional details about each variable are provided in the supplemental material. Graphic: Ripple, et al., 2021 / BioScience

July 31, 2021

World scientists’ warning of a climate emergency 2021 – Humans face untold suffering from “the consequences of unrelenting business as usual”

28 July 2021 (BioScience) – In 2019, Ripple and colleagues (2020) warned of untold suffering and declared a climate emergency together with more than 11,000 scientist signatories from 153 countries. They presented graphs of planetary vital signs indicating very troubling trends, along with little progress by humanity to address climate change. On the basis of […]