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

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 seasonal distribution of cumulative concentrations of target contaminants in the dissolved phase of snow collected in snow pits at the top of each glacier in the snowpack on north-western Spitsbergen. Spring – S; Winter – W; Fall – F. BP3 and BPA not displayed in the HDF S sample. Graphic: D'Amico, et al., 2023 / Science of The Total Environment

Traces of sunscreen agents in the snow at the North Pole – “Many of the contaminants we have analysed had never been identified in Arctic snow before”

20 December 2023 (Ca’ Foscari University of Venice) – Traces of sunscreen agents were found at the North Pole, on the glaciers of the Svalbard archipelago. They were mainly deposited in winter, when night falls over the Arctic. A study conducted by researchers from Ca’ Foscari University of Venice and the Institute of Polar Sciences – National […]

Dilshad Bano, 51, sits on the floor near her house which was damaged after a Glacial Lake Outburst Flooding (GLOF) incident, in Hassanabad village, Pakistan, 9 October 2023 Photo: Akhtar Soomro / REUTERS

Mountain villages fight for future as melting glaciers threaten floods – “Until 1978, this whole place was a glacier. The pool of water came later.”

By Charlotte Greenfield 22 November 2023 (Reuters) – On the steep slope of a glacier jutting through the Hunza valley in Pakistan’s mountainous far north, Tariq Jamil measures the ice’s movement and snaps photos. Later, he creates a report that includes data from sensors and another camera installed near the Shisper glacier to update his […]

Swiss Federal Institute of Technology glaciologist and head of the Swiss measurement network “Glamos”, Matthias Huss, work at the Rhone glacier with his team near Goms, Switzerland, Friday, 16 June 2023. A top glacier watcher warned that a warm early summer and a heat wave could have caused severe glacier melt across Switzerland, threatening to make 2023 the second-worst year for ice loss after a record thaw in 2022. Photo: Matthias Schrader / AP Photo

Swiss glacier watcher warns 2023 heat wave threatens severe melt again after record 2022 – “We can definitely say that we had very high melting in Switzerland and in Europe in general”

By Jamey Keaten 1 September 2023 GENEVA (AP) – A top glacier watcher has warned that a warm early summer combined with a heat wave last week may have caused severe glacier melt in Switzerland, threatening to make 2023 its second-worst year for ice loss after a record thaw last year. Matthias Huss of the GLAMOS […]

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

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 […]

Map showing the heat index forecast in the United States on 24 August 2023. 110 million people in the U.S. were exposed to dangerous heat today. Graphic: The Washington Post

Heat dome shatters all-time U.S. records as Europe roasts – “Brutal” heat wave brings triple-digit temperatures from Chicago to New Orleans – 110 million people exposed to dangerous heat

By Andrew Freedman 24 August 2023 (Axios) – In a summer featuring countless heat domes and record-high temperatures and heat indices, the season appears to have saved the worst for last. The big picture: A sweltering, stagnant air mass is draped across the Central U.S., resulting in “dangerous,” “searing” and “brutal” heat. Meanwhile, southern Europe is also seeing another bout of […]

The location of climate tipping elements in the cryosphere (blue), biosphere (green) and ocean/atmosphere (orange), and global warming levels their tipping points will likely be triggered at 1.5°C. Researchers see signs of destabilisation already in parts of the West Antarctic and Greenland ice sheets, in permafrost regions, the Amazon rainforest, and potentially the Atlantic overturning circulation as well. Graphic: Earth Commission / Globaïa

Climate collapse could happen fast – “For a long time, we were within the range of normal. And now we’re really not. And it has happened fast enough that people have a memory of it happening.”

By Lois Parshley 20 July 2023 (The Atlantic) – Ever since some of the earliest projections of climate change were made back in the 1970s, they have been remarkably accurate at predicting the rate at which global temperatures would rise. For decades, climate change has proceeded at roughly the expected pace, says David Armstrong McKay, a […]

A researcher stands in a glacier cave on Svalbard, Norway. In 2023, scientists discovered that as the Arctic warms, shrinking glaciers are exposing bubbling groundwater springs which could provide an underestimated source of the potent greenhouse gas methane. Photo: Gabrielle Kleber

Shrinking Arctic glaciers are unearthing a new source of methane – “The amount of methane leaking from the springs we measured will likely be dwarfed by the total volume of trapped gas lying below these glaciers, waiting to escape”

By Catherine Martin-Jones 6 July 2023 (University of Cambridge) – As the Arctic warms, shrinking glaciers are exposing bubbling groundwater springs which could provide an underestimated source of the potent greenhouse gas methane, finds new research published today in Nature Geoscience. The study, led by researchers from the University of Cambridge and the University Centre in Svalbard, […]

(a) Individual contributors to the polar motion (PM) excitation trend. (b) Sum of PM excitation trend contributors with (solid blue) and without (dashed blue) groundwater depletion. Red arrow is the observed PM excitation. Graphic: Seo, et al., 2023 / Geophysical Research Letters

Humans have pumped so much groundwater that we’ve nudged the earth’s spin – “As a resident of Earth and a father, I’m concerned and surprised to see that pumping groundwater is another source of sea-level rise”

WASHINGTON, 15 June 2023 (AGO) – By pumping water out of the ground and moving it elsewhere, humans have shifted such a large mass of water that the Earth tilted nearly 80 centimeters (31.5 inches) east between 1993 and 2010 alone, according to a new study published in Geophysical Research Letters, AGU’s journal for short-format, high-impact research with […]

Aerial view near Jungersen Gletschur in Greenland. The white lines show where scientists believe the glacier edges were in 1900. Photo: Bob Elberling

Accelerated melting of glaciers in Greenland – Greenland’s glaciers have lost at least 587 cubic km of ice over the last century

26 May 2023 (University of Leeds) – A study has found widespread mass loss of glaciers and ice caps in Greenland since the start of the 20th century. The research provides critical insights into long-term changes to the glaciers and ice caps as a result of climate change, which has contributed about one fifth to […]

Social media & sharing icons powered by UltimatelySocial