sea level rise – Desdemona Despair

Annual global mean surface temperature anomalies relative to 1850–1900. Global mean near-surface temperature in 2023 was 1.45 ± 0.12 °C above the 1850–1900 average. The analysis is based on a synthesis of six global temperature datasets. 2023 was the warmest year in the 174-year instrumental record in each of the six datasets. The past nine years – from 2015 to 2023 – were the nine warmest years on record. The two previous warmest years were 2016, with an anomaly of 1.29 ± 0.12 °C, and 2020, with an anomaly of 1.27 ± 0.13 °C. Globally, every month from June to December was record warm for the respective month. September 2023 was particularly noteworthy, surpassing the previous global record for September by a wide margin (0.46 °C–0.54 °C) in all datasets. The second-highest margin by which a September record was broken in the past 60 years (the period covered by all datasets) was substantially smaller, at 0.03 °C–0.17 °C in 1983. July is typically the warmest month of the year globally, and thus July 2023 became the warmest month on record. The long-term increase in global temperature is due to increased concentrations of greenhouse gases in the atmosphere. The shift from La Niña, which lasted from mid-2020 to early 2023, to fully developed El Niño conditions by September 2023 likely explains some of the rise in temperature from 2022 to 2023. However, some areas of unusual warming, such as the North-East Atlantic do not correspond to typical patterns of warming or cooling associated with El Niño. Other factors, which are still being investigated, may also have contributed to the exceptional warming from 2022 to 2023, which is unlikely to be due to internal variability alone. Graphic: WMO

April 28, 2024

WMO: Climate change indicators reached record levels in 2023 – “Sirens are blaring across all major indicators. Some records aren’t just chart-topping, they’re chart-busting. And changes are speeding-up.”

19 March 2024 (WMO) – A new report from the World Meteorological Organization (WMO) shows that records were once again broken, and in some cases smashed, for greenhouse gas levels, surface temperatures, ocean heat and acidification, sea level rise, Antarctic sea ice cover and glacier retreat. Heatwaves, floods, droughts, wildfires, and rapidly intensifying tropical cyclones […]

Map showing areas surrounding New Orleans underwater by 2050 if current trends in sea level rise continue. Graphic: Climate Central

January 1, 2024

Interactive map shows United States areas under the sea in 2050 due to climate change

By John O’sullivan 1 January 2024 (Irish Star) – Several parts of The United States could be underwater by the year 2050, according to a frightening map produced by Climate Central. The map shows what could happen if the sea levels, driven by climate change, continue to rise at rates of 2 mm and 4 mm […]

Graph showing temperatures and atmospheric concentrations of carbon dioxide over the past 66 million years. Paleo-CO2 (including 95 percent credible intervals) is superimposed on the GMST trend over the past 66 million years. Age and CO2 labels highlight notable climate extrema and transitions as described in the text. Graphic: CenCO2PIP, Science 2023

December 25, 2023

A new 66 million-year history of carbon dioxide offers little comfort for today – “Regardless of exactly how many degrees the temperature changes, it’s clear we have already brought the planet into a range of conditions never seen by our species”

By Kevin Krajick 7 December 2023 (Columbia Climate School) – A massive new review of ancient atmospheric carbon-dioxide levels and corresponding temperatures lays out a daunting picture of where the Earth’s climate may be headed. The study covers geologic records spanning the past 66 million years, putting present-day concentrations into context with deep time. Among […]

Screenshot of the Human Climate Horizons platform, showing projected sea level rise (cm) in the 2040-2059 time horizon under the intermediate carbon emissions scenario (SSP2-4.5). Australis, Southeast Asia, Indonesia, and and the Pacific islands of Oceania are shown. The global average sea level rise is projected to be more than 18 cm. Graphic: UNDP

December 25, 2023

Climate change’s impact on coastal flooding to increase by five times over this century – “The effects of rising sea levels will put at risk decades of human development progress in densely populated coastal zones which are home to one in seven people in the world”

28 November 2023 (UNDP) – According to new data on the Human Climate Horizons platform, a collaboration between the Climate Impact Lab and UNDP, increased coastal flooding this century will put over 70 million people in the path of expanding floodplains. Latin America and the Caribbean, East Asia and the Pacific, and Small Island Developing […]

Screenshot from “Honest Government Ad: COP31 🇦🇺 & the Pacific”, by The Juice Media, showing the rapid, record-breaking decline of Antarctic sea ice in 2023. Photo: The Juice Media

December 3, 2023

Video: Honest Government Ad: COP31 🇦🇺 and the Pacific – “Let this major fossil-fuel exporter that’s cockblocked climate action for decades co-host a crucial summit with the most climate-vulnerable nations in the world while ignoring their pleas to stop harming them”

1 August 2023 (The Juice Media) – Hello. Bonjour. Ciao stronzi. Namaste. Ham maadarachod hain. I’m from the Australien Government with a message to the world. As cities bake, fires rage, reefs die, jet streams weaken, and 6-Ligma events cause climate scientists to shit their dacks, many are wondering if we’ve finally broken our favourite […]

Churchgoers leave Sunday morning service in Kioa, Fiji. Photo: Andrew Quilty / The Guardian

December 3, 2023

Australia offers refuge to Tuvaluans as rising sea levels threaten Pacific archipelago – “We are sinking, but so is everyone else”

By Pauline Rouquette 11 November 2023 (France24) – Canberra announced on Friday that it is offering climate refuge to Tuvaluans, unveiling the terms of a pact that would enable citizens of the 26-square kilometre archipelago – the fourth smallest state in the world – to move to Australia to “live, study and work”. Located near […]

Map of ensemble mean trends in ocean temperature and ice-shelf basal melting in the West Antarctic Ice Sheet (WAIS) for the Paris 2°C scenario. Temperature is averaged over the depth range 200–700 m. Trends are calculated at each point using annually averaged fields from 2006–2100. White regions indicate no significant trend. The Amundsen Sea region visualized here (latitude–longitude projection) is outlined in red in the inset map of Antarctica (polar stereographic projection). The black dashed line shows the 1,750 m depth contour of the continental shelf break and the blue dashed line outlines the continental shelf region used for analysis. Labels denote ice shelves (G, Getz; D, Dotson; Cr, Crosson; T, Thwaites; P, Pine Island; Co, Cosgrove; A, Abbot). Graphic: Naughten, et al., 2023 / Nature

November 10, 2023

The climate contradiction that will sink us – “We already have a refugee crisis; I shudder to think what would happen if everyone living within two meters of sea level would be displaced.”

By Zoë Schlanger 10 November 2023 (The Atlantic) – You’d be forgiven for thinking that the fight against climate change is finally going well. The clean-energy revolution is well under way and exceeding expectations. Solar is set to become the cheapest form of energy in most places by 2030, and the remarkable efficiency of heat pumps is driving their own uptake […]

Aerial view of two large ships traveling on a drought-stricken Mississippi River. Photo: Philip Gould / Getty

October 31, 2023

The Mississippi River is losing its fight with the ocean – “This is not a one-off or once-in-100-years thing”

By Nancy Walecki 11 October 2023 (The Atlantic) – The mouth of the Mississippi River is the arena for a kind of wrestling match. In one corner of the ring is the salt water of the Gulf of Mexico, and in the other, the river’s fresh water. The two shove against each other, and usually, […]

The calving front of the Thwaites Glacier in the Amundsen Sea in 2019, viewed from the R/V Nathaniel B. Palmer. Photo: Elizabeth Rush

September 10, 2023

We reached the glacier just as it collapsed – The world’s widest glacier is melting and changing predictions about our planet’s future – “It looks nearly as dramatic as the Larsen B collapse”

By Elizabeth Rush 13 August 2023 (The Atlantic) – Out on the bow of the R/V Nathaniel B. Palmer, the air is dense and almost warm. We have punched through miles of Antarctic ice floes to reach the Amundsen Sea’s foggy interior. I want to honor the remaining distance between us and Thwaites Glacier’s calving […]

Aerial view of the Panamanian island of Carti Sugdupu. Hundreds are preparing to leave the island in the face of rising sea levels. Photo: Luis Acosta

September 10, 2023

“We’re going to sink”: hundreds abandon Caribbean island home – “Almost all the islands are going to be abandoned by the end of this century”

By Juan José Rodríguez 6 September 2023 (AFP) – On a tiny Caribbean island, hundreds of people are preparing to pack up and move to escape the rising waters threatening to engulf their already precarious homes. Surrounded by idyllic clear waters, the densely populated island of Carti Sugtupu off Panama’s north coast has barely an […]