2023 defied climate expectations. It wasn’t just hotter than predicted — it was strangely hot. Now, scientists are piecing together what caused this anomaly, raising fresh concerns about Earth’s climate systems.
Gavin Schmidt, NASA’s top climate modeller at the Goddard Institute for Space Science, admitted to feeling “humbled” by 2023’s extraordinary temperatures. Writing in Nature earlier this year, Schmidt noted that the year was warmer than models anticipated. The deviation, unexplained at first, sparked worries that climate change is entering uncharted territory.
At December’s American Geophysical Union (AGU) meeting, the world's largest Earth science conference, experts revisited the mystery. Like detectives solving a case, scientists meticulously ruled out some “suspects” while identifying others.
Key Suspects Behind the Heat Surge
El Niño
The natural El Niño event, which warms the tropical Pacific, began in 2023, contributing to global temperatures. Yet the warming exceeded even El Niño’s usual influence, raising eyebrows.
Cleaner Air from Shipping
New rules to reduce sulphur in ship fuel have lowered pollution levels. However, cleaner air allows more sunlight to reach the ocean surface, which adds to global warming.
Volcano and Solar Activity
The Hunga Tonga eruption in 2022 injected water vapour into the atmosphere but also sulphates, which slightly cooled the Earth. Meanwhile, the Sun reached its peak activity cycle, contributing minimal extra heat.
Cloud Cover Changes
Research by Germany’s Alfred Wegener Institute found Earth reflected less sunlight in 2023 — its dimmest year yet. Reduced cloud cover, particularly over northern mid-latitudes, amplified warming. Cleaner air may have played a role, alongside long-term climate shifts that are altering cloud patterns.
The Bigger Picture
Global warming is accelerating. Some scientists argue that the drop in sulphur emissions is now speeding up heating, while changing cloud dynamics add to the uncertainty.
What’s Next
GISS modellers are now combining the latest data on sulphur emissions, cloud dynamics, and sunlight reflectivity into updated climate simulations. Schmidt expects these runs to clarify the contributions of various factors and potentially reshape projections for Earth’s future.
The findings are clear: warming is unlikely to slow any time soon.
The UK has announced a fresh round of sanctions against individuals and organisations it says are responsible for cyber attacks and hybrid operations ...
Tajikistan will reduce electricity exports and increase water reserves ahead of winter as the government seeks to improve domestic power supplies afte...
New Zealand actor Sam Neill, best known internationally for his role in 'Jurassic Park', died suddenly on Monday aged 78 after recovering from cancer,...
More than 1,300 excess deaths have been recorded across Europe since June 21 as the continent faces extreme heat, World Health Organization Director-General Tedros Adhanom Ghebreyesus said.
Conditions of a climate pattern El Niño have officially developed and are expected to strengthen through the Northern Hemisphere winter of 2026-27, according to the U.S. Climate Prediction Center. The forecast raises concerns of extreme weather, agricultural issues and record global temperatures.
Climatologists say Poland has logged its warmest December in 74 years, with 2025 continuing a run of above-average temperatures and repeated national records.
Global warming is crossing dangerous thresholds sooner than expected with the world’s coral reefs now in an almost irreversible die-off, marking what scientists on Monday described as the first “tipping point” in climate-driven ecosystem collapse.
The 4th Shusha Global Media Forum will bring together nearly 160 media leaders, experts and officials from 54 countries in Azerbaijan's historic city of Shusha on 13-14 July, to discuss journalism’s role in peacebuilding, restoring public trust and tackling challenges.
The U.S. has launched fresh strikes on Iran after Tehran targeted a container ship and said it had again closed the Strait of Hormuz. Iran also claimed to have expanded attacks on U.S. military facilities across the Gulf.
Typhoon Bavi, the strongest storm to hit the eastern coast of mainland China this year, brought heavy rain, strong winds, flooding and landslides after making landfall in Zhejiang province on Sunday. More than 2.8 million people were evacuated to safety ahead of the storm.
President Ilham Aliyev is holding his annual question-and-answer session with international journalists at the 4th Shusha Global Media Forum in Azerbaijan.
Qatar is mourning the death of its former ruler, Sheikh Hamad bin Khalifa Al Thani, who has passed away at the age of 74.
Typhoon Bavi, the strongest storm to hit the eastern coast of mainland China this year, brought heavy rain, strong winds, flooding and landslides after making landfall in Zhejiang province on Sunday. More than 2.8 million people were evacuated to safety ahead of the storm.
China has maintained its highest-level rainstorm warning after Typhoon Bavi made landfall on the country's eastern coast, urging large-scale evacuations and emergency preparations across several provinces amid fears of severe flooding and landslides
As a wildfire swept through the mountains toward rural Andalusian villages near Los Gallardos in southern Spain, residents faced a life-or-death decision. They had to choose between sheltering from the smoke or risking evacuation through rapidly spreading flames.
Known for its rich history and mountain landscapes, Azerbaijan's Gabala district is attracting visitors with another seasonal highlight. Vast lavender fields are becoming a key attraction in the region's growing agritourism sector.
Typhoon Bavi churned southeast of Taiwan in the Pacific Ocean on Thursday, its winds easing overnight to just shy of 200 kph (124 mph), as authorities urged residents to stock up on supplies and brace for what could be the most powerful typhoon since 2024.
You can download the AnewZ application from Play Store and the App Store.
What is your opinion on this topic?
Leave the first comment