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

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 […]

Mike England, who owns England Farms and Cattle Company located 29 miles east of McAllen, walks across one of the fields on his farm near Mercedes, Texas on 18 April 2024. England had to destroy 500 acres worth of sugar cane he’d grown because of the ongoing drought in the Rio Grande Valley. Credit: Photo: Ben Lowy / The Texas Tribune

April 28, 2024

South Texas farmers are in peril as the Rio Grande Valley runs dry, again – “Without water, what are we using to grow our crops? What are we able to pay back those loans with?”

By Berenice Garcia 18 April 2024 MERCEDES, TEXAS (The Texas Tribune) – Across the street from a red barn, a 40-acre field once covered by a sea of green sugar cane leaves now sits dry and thirsty. Irrigation water is dangerously elusive for the fields of the Rio Grande Valley. Mike England, who owns England […]

Twenty-first century groundwater-level trends in globally distributed monitoring wells. Each point represents one monitoring well, coloured to represent the Theil–Sen trend of annual median groundwater levels during the twenty-first century. Blue and red points indicate shallowing and deepening, respectively, of groundwater levels over time, with darker colours indicating faster rates. a, Spatial distributions of groundwater-level trends in globally distributed monitoring wells. b–o, Regional maps illustrating the substantial spatial variability in groundwater-level trends. Supplementary Notes 16 and 17 show monitoring wells and their groundwater-level trends at subcontinental scales (Supplementary Note 16) and in 207 individual aquifer systems. Graphic: Jasechko, et al., 2024 / Nature

April 28, 2024

Groundwater resources are drying up across the globe – “Climate variability and change can impact water supplies underground as well as above-ground”

By Matthew Rozsa 24 January 2024 (Salon) – Humans rely on groundwater for many things, but especially our food. Roughly 30 percent of all the planet’s available freshwater comes from groundwater, or water that is found underground in the spaces between rocks, soil and sand. It is primarily used for agriculture and billions of humans are dependent […]

Reconstructed late-summer/autumn relative temperatures and precipitation in Italy. (A) Comparison between late-summer/autumn dinoflagellate cyst-based W/C ratio (black line + black points) of core GeoB 10709-5 and mean autumn Italian temperatures at 1000-m altitude (blue line). (B) Late-summer/autumn dinoflagellate cyst-based W/C ratio and relative abundance of discharge species (nutrient sensitive) reconstructions (black lines) and the occurrence of epidemics and pandemics in the Roman empire (blue blocks) as well as disease outbreaks in Roman Italy (gray lines) and major historical periods/events. Graphic: Zonneveld, et al., 2024 / Science Advances

April 28, 2024

Plagues that ravaged the Roman empire were linked to periods of cold weather – “The Roman Empire rises and falls and rises and falls. And I think the case is now overwhelmingly clear that both climate change and pandemic disease had a role in many of those episodes.”

By Sarah Kuta 30 January 2024 (Smithsonian) – More than 2,000 years ago, climate change may have played a role in deadly pandemics that swept through the Roman Empire. Scientists have discovered a link between cold, dry periods and devastating bouts of fatal illness between 200 B.C.E. and 600 C.E. in Roman Italy, according to a […]

Spatial distribution of the total number of exposed days in 995 California ZIP Code Tabulation Areas (ZCTA) from 2006 to 2019 under the main analysis definition for climate hazards (85th percentile for extreme heat and 15 μg/m3 for wildfire PM2.5). (A) Compound exposure, (B) extreme heat alone, and (C) wildfire smoke alone. Gray color represents excluded ZCTA that has a population of ≤1000 or lacks any exposed day (extreme heat alone, wildfire smoke alone, or both). Graphic: Chen, et al., 2024 / Science Advances

April 28, 2024

Extreme heat, wildfire smoke harm low-income and nonwhite communities the most – “It’s really important to highlight this social injustice aspect of climate change”

By Dorany Pineda 2 February 2024 LOS ANGELES (AP) – Extreme heat and wildfire smoke are independently harmful to the human body, but together their impact on cardiovascular and respiratory systems is more dangerous and affects some communities more than others. A study published Friday in the journal Science Advances said climate change is increasing the frequency […]

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 […]

Electric vehicles charging in Victorville, California, 11 March 2024. In California, electric vehicles could soon account for 10 percent of peak power demand. Photo: Lauren Justice / The New York Times

April 28, 2024

A new surge in power use is threatening U.S. climate goals – “I can’t recall the last time I was so alarmed about the country’s energy trajectory”

By Brad Plumer 17 March 2024 (The New York Times) – Something unusual is happening in America. Demand for electricity, which has stayed largely flat for two decades, has begun to surge. Over the past year, electric utilities have nearly doubled their forecasts of how much additional power they’ll need by 2028 as they confront […]

Global energy-related CO2 emissions and their annual change, 1900-2023. Total energy-related CO2 emissions increased by 1.1 percent in 2023. Far from falling rapidly – as is required to meet the global climate goals set out in the Paris Agreement – CO2 emissions reached a new record high of 37.4 Gt in 2023. This estimate is based on the IEA’s detailed, cutting-edge region-by-region and fuel-by-fuel analysis of the latest official national energy data, supplemented by data on economic and weather conditions. Graphic: IEA

April 28, 2024

IEA: CO2 emissions in 2023 reached record high – Weather effects and continued Covid-19 reopening played a significant role in driving emissions in 2023

March 2024 (IEA) – CO2 Emissions in 2023 provides a complete picture of energy-related emissions in 2023. The report finds that clean energy growth has limited the rise in global emissions, with 2023 registering an increase of 1.1 percent. Weather effects and continued Covid-19 reopening played a significant role in driving emissions in 2023. Advanced economies saw […]

(a) Maps of the Pacific Northwest U.S. showing the median annual flight hours between November 1st and January 31st for Historical, and near-future, mid-future, and distant-future time frames for two RCPs, (b) elevations with Cascade and Rocky Mountain ranges marked, (c) Map of the continental United States with highlighted study area (grey). The historical panel of ‘a’ marks two locations in Washington State, Omak, and Richland, which are referenced in the text. Note that the elevation data is not used in any analysis and is provided solely for visual context. Graphic: Rajagopalan, et al., 2024 / Nature Scientific Reports

April 28, 2024

Western honeybee colonies at risk of collapse, WSU study finds – “They’re really the glue in our ecosystems. And you never notice the glue — until it stops working.”

By Conrad Swanson 1 April 2024 (The Seattle Times) – One of nature’s most important keystone species is working itself to death. Colonies of honeybees — crucial pollinators for a wide variety of plants and cash crops — are at risk of collapse because of climate change, a recent study by scientists at Washington State University and […]

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 […]

Desdemona Despair

Desdemona Despair