ocean – Desdemona Despair

Map showing sea surface temperatures in the Caribbean Sea and Atlantic Ocean on 2 July 2024. The track and intensity of Hurricane Beryl is indicated. Data: U.S. National Hurricane Center / NASA. Graphic: BBC

July 4, 2024

How record-breaking Hurricane Beryl is a sign of a warming world – “What makes Beryl particularly notable is that it intensified the fastest from a tropical depression to a hurricane of any Atlantic hurricane in June or early July”

By Mark Poynting 4 July 2024 (BBC News) – Hurricane Beryl is wreaking havoc in parts of the Caribbean – and putting the role of climate change under the spotlight. With maximum sustained wind speeds of more than 160mph (257km/h), it became the earliest category five Atlantic hurricane in records going back around 100 years. […]

Diagrams showing parameters for the collapse of the Atlantic Meridional Overturning Circulation (AMOC). (A) The AMOC strength at 1000 m and 26°N, where the yellow shading indicates observed ranges (60, 61). The cyan-colored lines indicate the magnitude of FH. The red arrow indicates the AMOC tipping point (model year 1758; fig. S1, A and B), and the blue sections indicate the 50-year periods used in (B) to (D). Inset: The hosing experiment where fresh water is added to the ocean surface between 20°N and 50°N in the Atlantic Ocean (+FH) and is compensated over the remaining ocean surface (−FH). The black sections indicate the 26°N and 34°S latitudes over which the AMOC strength and freshwater transport (FovS) are determined, respectively. (B to D) AMOC streamfunction (Ψ) and Atlantic meridional heat transport (MHT; see also fig. S2) for model years 1 to 50, 1701 to 1750, and 2151 to 2200. The contours indicate the isolines of Ψ for different values. Graphic: Van Westen, et al., 2024 / Science Advances

May 27, 2024

Marker for the collapse of key Atlantic current discovered – “We are approaching the tipping point”

By Stephanie Pappas 9 February 2024 (Live Science) – Scientists have discovered a key warning sign before a crucial Atlantic current collapses and plunges the Northern Hemisphere into climate chaos. The Atlantic Meridional Overturning Circulation (AMOC) carries warm water north from the Southern Hemisphere, where it releases heat and freezes. The freezing process concentrates salt […]

Research into Southern California’s history of ocean dumping was spurred by the discovery of mysterious and corroded barrels dumped off the coast of Los Angeles. Photo: David Valentine / ROV Jason

May 27, 2024

DDT found in deep-sea fish raises troubling concerns for food web – “Nothing is untouched”

By Rosanna Xia 6 May 2024 (Los Angeles Times) – For several years now, one question has held the key to understanding just how much we should worry about the hundreds of tons of DDT that had been dumped off the coast of Los Angeles: How, exactly, has this decades-old pesticide — a toxic chemical spread across […]

A diver examines bleached coral off the Keppel Islands, Australia, at the southern end of the Great Barrier Reef, 5 March 2024. Photo: Renata Ferrari / AIMS / Reuters

April 28, 2024

The widest-ever global coral crisis will hit within weeks, scientists say – “Now we’re at the point where we’re in the disaster movie”

By Catrin Einhorn 15 April 2024 (The New York Times) – The world’s coral reefs are in the throes of a global bleaching event caused by extraordinary ocean temperatures, the National Oceanic and Atmospheric Administration and international partners announced Monday. It is the fourth such global event on record and is expected to affect more […]

Daily global sea surface temperatures, 1981-2024. Data: Climate Reanalyzer, Climate Change Institute at the University of Maine, based on data from NOAA Optimum Interpolation Sea Surface Temperature (OISST) Data through 8 April 2024. Graphic: The New York Times

April 28, 2024

Ocean heat has shattered records for more than a year. What’s happening?

By Delger Erdenesanaa 10 April 2024 (The New York Times) – The ocean has now broken temperature records every day for more than a year. And so far, 2024 has continued 2023’s trend of beating previous records by wide margins. In fact, the whole planet has been hot for months, according to many different data […]

Top: Zonal-mean sea surface temperature (SST) (12-month running-mean) relative to 1951-1980 base period. Bottom: Zonal-mean surface temperature (12-month running-mean) relative to 1951-1980. Graphic: Hansen, Sato, and Kharecha, 2024

April 28, 2024

Global warming acceleration: hope vs. hopium – “The increase is not due to a brightening Sun, it is due to a darkening Earth”

By James Hansen, Makiko Sato, and Pushker Kharecha 29 March 2024 (Columbia University) – Accumulating evidence supports the interpretation in our Pipeline paper: decreasing human-made aerosols increased Earth’s energy imbalance and accelerated global warming in the past decade. Climate sensitivity and aerosol forcing, physically independent quantities, were tied together by United Nations IPCC climate assessments that rely […]

Monthly global surface air temperature anomalies (°C) relative to 1850–1900 from January 1940 to March 2024, plotted as time series for each year. 2024 is shown with a thick yellow line, 2023 with a thick red line, and all other years with thin lines shaded according to the decade, from blue (1940s) to brick red (2020s). Data source: ERA5. Graphic: C3S / ECMWF

April 27, 2024

Earth’s warmest March is 10th straight record month, NOAA and NASA find

By Jonathan Erdman 12 April 2024 (Weather.com) – March was Earth’s warmest on record, according to data from three separate agencies, the latest month in a stretch of heat records since the planet’s hottest year in 2023. Another month, another record In a report released Friday, NOAA found March’s globally average temperature was 2.43 degrees Fahrenheit above […]

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 […]

(a) Linear trends in sea surface temperature (SST) (°C per decade) over the period 1982–2022. (b) Area-averaged time series of SST anomalies (°C) relative to the 1982–2022 reference period for the areas indicated in grey dashed lines in 5(a). Source: Derived from the Copernicus Marine Service remote sensing products available at https://doi.org/10.48670/moi-00168 (for 1982–2021) and https://doi.org/10.48670/moi-00165 (for 2022). Graphic: WMO

August 20, 2023

Pacific island sea levels rising faster than global average, WMO says – Economic damage in Southwest Pacific due to flooding in 2022 was $8.5 billion, almost triple compared to the previous year

By Gabrielle Tétrault-Farber 17 August 2023 GENEVA (Reuters) – Sea levels in the South-West Pacific are rising faster than the global average, threatening low-lying islands while heat damages marine ecosystems, the U.N. meteorological agency said on Friday. In its State of the Climate in the South-West Pacific 2022 report, the World Meteorological Organization (WMO) said […]

This map shows global temperature anomalies for July 2023 according to the GISTEMP analysis by scientists at NASA’s Goddard Institute for Space Studies. Temperature anomalies reflect how July 2023 compared to the average July temperature from 1951-1980. Graphic: NASA’s Goddard Institute for Space Studies

August 20, 2023

NASA announces July 2023 was hottest month on record – “The science is clear this isn’t normal”

By Sheri Walsh 14 August 2023 (UPI) – July 2023 was the hottest month on record in 143 years, as Americans felt “the effects of the climate crisis,” scientists at NASA’s Goddard Institute for Space Studies in New York announced Monday. According to NASA, July 2023 was on average 0.43 degrees Fahrenheit warmer than any […]