Meridional winds in m/s (contours; purple: southerly, orange: northerly winds, in (a–c, e–g) contours start at an absolute value of 3 m/s and increase/decrease by 3 respectively, in (d, h) contours start an absolute value of 0.5 and increase/decrease by steps of one) and near surface temperature anomalies filled contours during (a–c) wave-7 and (e–g) wave- 5 events relative to the respective climatology in the northern hemisphere summer (JJA) based on (a, e) ERA5 reanalysis (1960–2014), (b, f) historical (1960–2014) and (c, g) future (SSP5-8.5, 2045–2099) bias-adjusted output from CMIP6 simulations (four models). d, h) Difference in meridional winds and temperature response during wave events comparing historical and future patterns in four bias-adjusted CMIP6 models (for twelve non adjusted models see Fig. S6). Hatching shows statistical significance on a 95% confidence level (a, d, e, h) or 100% model agreement in sign (4 out of 4 models, b, c, f, g) While the phase positions and intensity of the wave patterns (line contour) are well represented in the models their surface imprint are considerably underestimated in historical simulations. Changes in the temperature response are identified over North America, Eurasia and East Asia (d, h). Graphic: Kornhuber, et al., 2023 / Nature Communications

Study finds climate risk to crops greater than thought – Simultaneous harvest failures across major crop-producing regions threaten global food security – “These types of concurring events are really largely underestimated”

By Kelly Macnamara 4 July 2023 (AFP) – The risks of harvest failures in multiple global breadbaskets have been underestimated, according to a study Tuesday that researchers said should be a “wake up call” about the threat climate change poses to our food systems. Food production is both a key source of planet-warming emissions and […]

Number of mass killings in the United States in 2023 compared with previous years. Data are current to 4 July 2023. Graphic: USA TODAY

U.S. on grim pace for gun violence, mass killings in 2023: “The bad year continues”

By Grace Hauck 15 July 2023 (USA TODAY) – An acceleration of mass shootings. More public mass killings. More than 200 people across the nation shot on the Fourth of July. The United States frequently reaches horrific new highs of the gun violence epidemic. The latest way: A deadly six months in what figures to be the […]

A Jet takes flight over downtown Phoenix on 12 July 2023, when the high hit 111 degrees. Nationwide, more than 113 million Americans were under some form of heat alert, the National Weather Service said. The alerts, which included excessive heat warnings and heat advisories, stretched 2,000 miles from Oregon to Louisiana. Photo: Matt York / AP

Climate change isn’t a top issue for Democrats or Republicans. Record heat should change that.

By Clifford Young 15 July 2023 (USA TODAY) – Extreme weather events are on the rise. States across the south-central and western U.S. are roasting. New York to New England is dealing with catastrophic floods. After years of drought, California went the opposite way and experienced one of the wettest winters in decades. And the across the country, […]

Map showing OSHA reported heat deaths per 1 million workers in the U.S., 2017-2022. Oklahoma and Arkansas had the highest death rates, at 2.26 / million and 2.1 / million, respectively. Data: OSHA / Census Bureau / Bloomberg Law. Graphic: Jacob Bogage and Eli Tan / The Washington Post

Forcing people to work in deadly heat is mostly legal in the U.S. – As the planet records some of its highest average temperatures, workers have barely any legal protections from extreme heat – “They send us with two bottles of water, and that’s it”

By Jacob Bogage and Eli Tan 14 July 2023 (The Washington Post) – The pain usually starts for Karla Perez when the temperature reaches 100 degrees. “When it’s too hot, I feel like vomiting,” said Perez, who has worked landscaping and construction jobs in the Dallas area for the last decade. “My legs are shaking. […]

Map showing forecast surface temperature highs in the United States, 14 July 2023 - 19 July 2023. Graphic: WeatherBell

Dangerous, record-setting coast-to-coast heat wave to peak in mid-July 2023 – Relentless heat dome will intensify, threatening all-time records

By Matthew Cappucci 14 July 2023 (The Washington Post) – Mid-July is the hottest time of year for many in the Lower 48 states, but the historically intense heat dome that’s sprawled over the southern and western U.S. is exceptional and pushing temperatures into uncharted territory. Triple-digit temperatures are expected to impact at least 10 […]

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, […]

Map showing temperatures around the world and numbers of people killed by heatwaves, 4 July 2023. Data: Zoom Earth. Graphic: Anadolu Agency / Getty

Striking map charts deadly heatwaves killing people around the world in 2023

By Katherine Fidler 5 July 2023 (Metro) – A striking map [by Anadolu Agency –Des] shows how soaring temperatures are affecting people around the world – 48 hours after the world recorded its hottest-ever day. Using June as a snapshot, the infographic highlights just some of the regions struck by intense heat – including the […]

Temperature forecast for the Iberian Peninsula during the week of 26 June 2023. Graphic: AEMET

Spain weathers scorching temperatures as heatwaves become more frequent – “In the last 12 years the frequency of heatwaves in June has tripled”

MADRID, 26 June 2023 (Reuters) – Areas of southern Spain such as Seville and Cordoba registered scorching temperatures of up to 44 degrees Celsius (111.2 Fahrenheit) on Monday as the first heatwave of the summer hit the Iberian country, sending people to seek shade from a blistering sun. Heatwaves in June have become more frequent […]

Heat index forecast for the United States, 3 July 2023 - 8 July 2023. An estimated 76 million people in the U.S. were exposed to dangerous heat on 2 July 2023. Graphic: The Washington Post

Summer in the Southern U.S. is becoming unbearable – “This is how it’s going to be: Things will get hotter, storms will get worse, wildfire smoke will get more common. All the while, the ruts of inequity will be worn deeper, the same people time and time again placed on the front lines of catastrophe.”

By Olivia Paschal 1 July 2023 (The Atlantic) – A few weeks ago, as the first wave of smoke from the Canadian wildfires rolled south, I was getting ready to drive from Charlottesville, Virginia, about 18 hours west to my hometown of Rogers, Arkansas, to visit family. I figured that by the time I hit […]

People watch the sunset as the smoke from wildfires is visible in Toronto on 28 June 2023. Photo: Chris Young / AP

Canada marks worst wildfire season on record in 2023 – Wildfires have burned 19.5 million acres across Canada this year so far

By Somayeh Malekian, Emma Ogao, and Victoria Beaule 1 July 2023 LONDON (ABC News) – Canada’s wildfire season is now the worst ever recorded as the country has exceeded the largest area ever burned in a year, totaling more than 19.5 million acres so far. There are at least 500 active fires burning around the […]

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