Aerial view of boats stranded in the mud of the parched Rio Negro amid a drought in the Amazonas state of Brazil on 29 September 2023. Photo: Michael Dantas / AFP

Drought drains Brazilian Amazon residents reliant on waterways – “It’s every man for himself”

By Orlando Junior 3 October 2023 (AFP) – Not far from the emblematic site where the black waters of the Rio Negro join the brown currents of the Solimoes, two chief tributaries of the Amazon, what once was a lake has given way to a vast stretch of cracked mud. Now, the only water remaining […]

A bridge and rubble from a previous house that was underwater at Canyon Lake in Texas reappeared in 2023 due to historically low water levels. Photo: JM Perez / CNN

In Texas, water levels are so low a rarely-seen underwater cave and century-old ruins have appeared – “I haven’t seen the water this low since I moved here. It’s actually kind of sad.”

By Amanda Jackson and Zoe Sottile30 September 2023 (CNN) – Water levels are so low at Canyon Lake in Texas that an underwater cave and remnants of communities that stood more than a century ago at the site are reappearing. The lake, located in Comal County just northeast of San Antonio, is a man-made lake spanning 8,200 acres with […]

The McDougall Creek wildfire burns next to houses in the Okanagan community of West Kelowna, British Columbia, Canada, 19 August 2023. Photo: Chris Helgren / REUTERS

City empties as thousands flee wildfire burning near capital of Canada’s Northwest Territories – Wildfires could persist for rest of “marathon” summer – “I don’t want to die, mommy”

By Tammy Webber and Jim Morris 18 August 2023 VANCOUVER, British Columbia (AP) – Residents heeded warnings to evacuate the capital of Canada’s Northwest Territories as a large wildfire burned just outside the city of 20,000 Friday, while firefighters battled a growing fire that set homes ablaze in a city in British Columbia. Thousands of […]

Alain-Richard Donwahi in May 2017, in Abidjan. Mr. Donwahi is a former Ivory Coast defence minister who led the 2022 UN COP15 summit on desertification. Photo: Sia Kambou / AFP

Global heating likely to hit world food supply before 1.5°C, says UN expert – “Climate change is a pandemic that we need to fight quickly. See how fast the degradation of the climate is going – I think it’s going even faster than we predicted.”

By Fiona Harvey 12 August 2023 (The Guardian) – The world is likely to face major disruption to food supplies well before temperatures rise by the 1.5C target, the president of the UN’s desertification conference has warned, as the impacts of the climate crisis combine with water scarcity and poor farming practices to threaten global […]

Map showing global water stress projected to 2050. By 2050, an additional 1 billion people are expected to live with extremely high water stress, even if the world limits global temperature rise to 1.3 degrees C to 2.4 degrees C (2.3 degrees F to 4.3 degrees F) by 2100, an optimistic scenario. Global water demand is projected to increase by 20 percent to 25 percent by 2050, while the number of watersheds facing high year-to-year variability, or less predictable water supplies, is expected to increase by 19 percent. Data: wri.org/aqueduct. Graphic: WRI

25 countries, housing one-quarter of the population, face extremely high water stress – By 2050, an additional 1 billion people will live with extremely high water stress

By Samantha Kuzma, Liz Saccoccia, and Marlena Chertock 16 August 2023 (WRI) – New data from WRI’s Aqueduct Water Risk Atlas show that 25 countries — housing one-quarter of the global population — face extremely high water stress each year, regularly using up almost their entire available water supply. And at least 50% of the world’s population […]

An aerial view of a wildfire in Kihei, Maui County, Hawaii, on 8 August 2023. Photo: Clint Hansen / Maui Real Estate / Reuters

“It’s apocalyptic”: People jump into the ocean to flee Maui wildfires – Burn patients overwhelm hospitals as 911 is cut off – Winds from Hurricane Dora fan flames – “This is so unprecedented”

By Holly Yan, Amanda Jackson, Jamiel Lynch and Chris Boyette 9 August 2023 (CNN) – The wildfires raging out of control in Maui are so catastrophic, some residents are hurling themselves into the ocean to escape the flames. Even emergency crews might not be able to help as the infernos – fueled in part by […]

Changes of sea surface temperature (SST) gradient anomalies and the spatial distribution of SST to a changing CO2 pathway. (A) Time evolution of latitudinal gradient of sea surface temperature anomaly (unit: °C) in the SH (pink) from its PD value. (B) Same as (A) but for the NH (black), the North Pacific (NP; 120°E to 90°W, green dotted line), and the North Atlantic (NA; 70°W to 0°E, orange dashed line) sectors with the Atlantic meridional overturning circulation (AMOC) strength anomaly from its PD value (skyblue; unit: Sv). The SST gradient is determined by the SST differences from the tropics (0° to 15°) to the midlatitudes (45° to 60°) in each hemisphere. The AMOC strength is defined by averaging annual-mean Atlantic meridional ocean stream function within the latitudinal band from 35°N to 45°N at a depth of 1000 m. Note that the weakening of AMOC is upwards in the right axis in (B). All values are based on the ensemble mean of 28 members (subjected to an 11-year running mean), with their 1 SD ranges across the ensemble members marked with shading. (C to E) SST changes (unit: °C) for peak (2121–2160) minus early RU (2001–2040) periods, late RD (2241–2280) minus peak periods, and late RD minus early RU periods, respectively. Climatological SST in the PD climate (unit: °C) is contoured in (C) to (E). The hatched regions in (C) to (E) indicate where temperature changes are statistically insignificant at the 95% confidence level. The SH, NP, and NA sectors for the SST gradient in (A) and (B) are denoted by colored boxes in (C) to (E). Graphic: Kim, et al., 2023 / Science Advances

Removing carbon from Earth’s atmosphere may not “fix” climate change – Changes to atmospheric circulation caused by global warming may persist for centuries after CO2 concentrations decrease – “We cannot control nature. We cannot reverse the consequences that easily. We cannot fix nature.”

By Tereza Pultarova 28 July 2023 (Space.com) – Removing carbon from Earth’s atmosphere may not reverse devastating changes to weather patterns in vulnerable areas, a new study suggests. In the study, Korean researchers simulated how removing large quantities of the greenhouse gas carbon dioxide from the air might affect the progress of local climate changes […]

A man rides a bike on a small road on the outskirts of Frankfurt, Germany, as the sun rises on Friday, 7 July 2023. Photo: Michael Probst / AP Photo

Climate collapse could happen fast – “Many scientists knew these things would happen, but we’re taken aback by the severity of the major changes we’re seeing”

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 […]

Aerial view of the Paso Severino reservoir that supplies water to Montevideo, Uruguay, in July 2023. It is nearly completely empty and currently only holds only 3 percent of its normal capacity due to three consecutive years of drought. Uruguay is facing the worst water crisis in its history due to the prolonged drought. Photo: Guardian News

Three consecutive years of drought leave millions in Uruguay without tap water fit for drinking – Main reservoir for capital at 3 percent of capacity

By Martín Tocar 15 July 2023 (The Guardian) – More than half of Uruguay’s 3.5 million citizens are without access to tap water fit for drinking, and experts say the situation could continue for months. Some had predicted the crisis years ago when pointing out the vulnerability of the single reservoir supplying water to the […]

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 […]

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