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UN climate negotiations end on shaky geopolitical ground, but I see reasons for hope

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Officials from countries around the world met in Baku, Azerbaijan, for COP29 in November 2024. UN Climate Change via Flickr

Shannon Gibson, USC Dornsife College of Letters, Arts and Sciences

The 2024 United Nations climate talks wrapped up two days late, with an ending fitting that of a geopolitical reality TV show, complete with walkouts and recriminations.

Countries agreed on a new climate finance target on Nov. 24, 2024, promising to provide at least US$300 billion annually by 2035 to help developing countries build clean energy systems. But it was far less than the $1.3 trillion vulnerable countries were calling for.

The conference also delayed a debate over how to move forward on a 2023 agreement for all countries to contribute to “transitioning away from fossil fuels” and to submit climate pledges aligned with the 1.5C limit.

Some people may be ready to write the epitaph for global progress against climate change. But as someone who teaches global environmental politics and has followed international climate talks for years, I see both practical and moral reasons to remain hopeful.

The battle to keep the 1.5 C goal alive

In 2015, the world’s nations agreed as part of the Paris climate accord to limit global warming to 2 degrees Celsius (3.6 degrees Fahrenheit), with an aspirational target of 1.5 C (2.7 F). This target is important, but sometimes confusing. It is rooted in science, but it is not a singular “tipping point.”

As the planet warms beyond 1.5 C, multiple large-scale climate shifts will become more likely.

Ocean circulation is already slowing, coral reefs face increasingly common mass bleaching events as the oceans heat up, and Arctic permafrost is thawing, releasing greenhouse gases that further fuel climate change. Rising temperatures are also fueling increasingly frequent and more damaging heat waves, droughts, wildfires and flooding that put human lives and livelihoods at risk.

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Recognizing these risks, the Paris Agreement was widely heralded, and many countries have made progress in lowering their emissions in the decade since. However, not all countries are pulling their weight.

In 2023, the U.N. acknowledged that the countries’ current commitments for addressing climate change, known as nationally determined contributions, or NDCs, would still result in a catastrophic 2.5 C to 2.9 C (4.5 F to 5.2 F) of warming by 2100.

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The World Meteorological Organization issued a “red alert” in November 2024 that the world is on track to overshoot the 1.5 C goal this year. It notes that this overshoot can be temporary – if countries take greater action.

A thermometer shows the world is not on track to meet the Paris goals.
Projections for how much temperatures will rise by the end of the century based on current policies, countries’ 2030 formal targets, countries’ 2030 pledges and a best-case scenario if all announced targets are met. Climate Analytics and NewClimate Institute (c)

How the world can still meet the Paris goals

Countries can still turn the tide on climate change.

The outcomes of the 2023 climate talks provided a road map for countries to increase their efforts toward net-zero emissions:

  • Triple renewable energy capacity globally.
  • Accelerate a phasedown of coal power.
  • Transition away from fossil fuels.
  • Accelerate zero-emissions and low-emissions technologies.
  • Cut methane and other noncarbon dioxide emissions.
  • Reduce emissions from road transport.
  • Phase out inefficient fossil fuel subsidies.

Many countries are making progress on this transition.

Among developed countries, Norway is on track to phase out of fossil fuel vehicle sales in 2025. China has become a leader in renewable energy. It pledged in 2020 to double its renewable energy capacity by 2030, and, thanks to solar power deployment, it expects to complete that goal in half the time.

Other nations, including the U.K., Greece and Denmark, have embarked on major efforts to scale down coal power, with Portugal being the first to hit zero coal.

Two workers in white smocks and hats use instruments for detailed work on line of solar cells in a factory.
Workers produce photovoltaic cell modules for solar panels in Zaozhuang, China, in February 2024. China is the major supplier of solar cells used around the world. Costfoto/NurPhoto via Getty Images

An important mechanism of the Paris Agreement is the expectation that countries will ratchet up their commitments every five years. The deadline for these new climate goals is early 2025, and some countries have gotten a head start.

Brazil announced its new climate commitments during the climate conference, pledging to reduce emissions 67% by 2035. The United Arab Emirates submitted a commitment to reduce its emissions by 47% compared with its 2019 baseline emissions. Other countries signaled their intentions in high-level statements. Belgium announced a doubling of its climate finance contribution.

These new announcements are a good sign of continued global support for the Paris Agreement goals.

Additionally, the conference made progress on agreements to reduce non-CO₂ emissions, namely methane, nitrous oxide and hydrofluorocarbons – also known as climate change “super pollutants” because of their extreme global warming potential.

Why the Paris Agreement will survive a second Trump presidency

There is no doubt that Donald Trump returning as U.S. president will pose significant roadblocks to efforts to slow climate change. As a candidate, he talked about throttling back U.S. efforts, including cutting funding for clean energy and eliminating regulations on the fossil fuel industry.

But efforts to deal with climate change are bigger than one person or even one country.

While Trump has declared that he will pull the U.S. out of the international Paris Agreement again, influential people are advising him to reconsider. Exxon Mobil CEO Darren Woods argued that a U.S. withdrawal would leave a hole at the global negotiating table.

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Even if Trump does pull the U.S. out of the treaty, which he can do after a one-year waiting period, that doesn’t mean pro-climate actions in the U.S. will simply stop or that the agreement will fall apart.

There are commonsense business reasons to push climate efforts forward, starting with the fact that clean energy is now cheaper than fossil fuels in much of the world. Nearly 1 in 5 vehicles sold in 2023 globally were electric. In the U.S., heat pump sales are beating gas furnaces for the third straight year. https://ourworldindata.org/grapher/levelized-cost-of-energy?tab=chart

A withdrawal from the Paris Agreement also does not prevent states and cities from continuing their progress against climate change.

In fact, after Trump announced he would withdraw the U.S. from the agreement in 2017, several U.S. states doubled down on their climate commitments. Hawaii, for example, passed legislation to be “Paris compliant” and get to net-negative emissions, meaning it will sequester more emissions than it emits.

California continues to report falling emissions even with a growing economy. The state sued several large oil and gas companies for deceiving the public about climate change.

Moreover, a U.S. retreat from the Paris Agreement would not be an embargo on individual actions. Engineers and scientists will continue to create innovative technology to reduce emissions and slow climate change, and corporations will reap the economic benefits of energy efficiency and clean energy market leadership.

This acknowledgment has given rise to calls for a blend of optimism and pragmatism.

Looking ahead to 2025

Next year’s COP30, to be held in Brazil, is important because countries face a deadline for setting new targets. Overall, their current policies still fall short of the 1.5 C goal.

Calls for greater commitments are not just optimistic, they are economically and morally compelling.

For one, the future cost of inaction now is greater than the cost of action, so concerted decisions to delay emissions cuts now will only harm countries in the future.

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Morally, the international community has a responsibility to mitigate suffering. This is the very nature of long-held international norms and laws, such as the “responsibility to protect,” and reiterated in Pope Francis’ calls for global environmental responsibility.

While the climate will breach the 1.5 C warming limit, every fraction of a degree matters. I believe it is crucial that countries, states, business leaders and people everywhere continue the shift toward cleaner energy to minimize the impact.

Researchers Emerson Damiano and Lauren Segal, students in environmental studies at the University of Southern California, contributed to this article.

Shannon Gibson, Associate Professor of International Relations and Environmental Studies, USC Dornsife College of Letters, Arts and Sciences

This article is republished from The Conversation under a Creative Commons license. Read the original article.

STM Daily News is a vibrant news blog dedicated to sharing the brighter side of human experiences. Emphasizing positive, uplifting stories, the site focuses on delivering inspiring, informative, and well-researched content. With a commitment to accurate, fair, and responsible journalism, STM Daily News aims to foster a community of readers passionate about positive change and engaged in meaningful conversations. Join the movement and explore stories that celebrate the positive impacts shaping our world.

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Greenland’s Inuit have spent decades fighting for self-determination

The article highlights the Inuit communities in Greenland amid global discussions about the island’s ownership, particularly regarding U.S. President Trump’s interest. It chronicles the Inuit’s historical presence, their traditional lifestyles, and the ongoing struggle for self-determination. Despite colonial influences, modern Kalaallit strive for recognition and independence.

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The article highlights the Inuit communities in Greenland amid global discussions about the island's ownership, particularly regarding U.S. President Trump's interest. It chronicles the Inuit's historical presence, their traditional lifestyles, and the ongoing struggle for self-determination. Despite colonial influences, modern Kalaallit strive for recognition and independence.
People walk along a street in Nuuk, the capital of Greenland. Ina Fassbender/AFP via Getty Images

Susan A. Kaplan, Bowdoin College and Genevieve LeMoine, Bowdoin College

Amid the discussion between U.S. President Donald Trump and Danish and European leaders about who should own Greenland, the Inuit who live there and call it home aren’t getting much attention.

The Kalaallit (Inuit of West Greenland), the Tunumi (Inuit of East Greenland) and the Inughuit (Inuit of North Greenland) together represent nearly 90% of the population of Greenland, which totals about 57,000 people across 830,000 square miles (2.1 million square kilometers).

We are Arctic anthropologists who work in a museum focused on the Arctic and its people. One of the areas we study is a land whose inhabitants call it Kalaallit Nunaat, or land of the Kalaallit. Known in English as Greenland, it is an Indigenous nation whose relatively few people have been working for decades to reclaim their right to self-determination.

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Arrivals from the west

For nearly 5,000 years, northwestern Greenland – including the area that is now the U.S. Space Force’s Pituffik Space Base, formerly known as Thule Air Force Base – was the island’s main entry point. A succession of Indigenous groups moved eastward from the Bering Strait region and settled in Siberia, Alaska, Canada and Greenland.

Approximately 1,000 years ago, the ancestors of the Inuit living in Greenland today arrived in that area with sophisticated technologies that allowed them to thrive in a dynamic Arctic environment where minor mishaps can have serious consequences. They hunted animals using specialized technologies and tools, including kayaks, dog-drawn sleds, complex harpoons, and snow goggles made from wood or bone with slits cut into them. They dressed in highly engineered garments made from animal fur that kept them warm and dry in all conditions.

Their tools and clothing were imbued with symbolic meanings that reflected their worldview, in which humans and animals are interdependent. Inughuit families who live in the region today continue to hunt and fish, while navigating a warming climate.

file 20260127 56 2dj9qg.jpg?ixlib=rb 4.1
Local people fish from a small boat by an iceberg with an ice cave, near Ilulissat, in 2008. Bryan Alexander, courtesy of the Peary-MacMillan Arctic Museum, Bowdoin College, CC BY-NC-ND

Arrivals from the east

At Qassiarsuk in south Greenland, around the time Inuit arrived in the north, Erik the Red established the first Norse farm, Brattahlíð, in 986, and sent word back to Iceland to encourage others to join him, as described in an online exhibit at the Greenland National Museum. Numerous Norse families followed and established pastoral farms in the region.

As Inuit expanded southward, they encountered the Norse farmers. Inuit and Norse traded, but relations were sometimes tense: Inuit oral histories and Norse sagas describe some violent interactions. The two groups maintained distinctly different approaches to living on the land that rims Greenland’s massive ice sheet. The Norse were very place-based, while the Inuit moved seasonally, hunting around islands, bays and fjords.

As the Little Ice Age set in early in the 14th century, and temperatures dropped in the Northern Hemisphere, the Norse were not equipped to adjust to the changing conditions. Their colonies faltered and by 1500 had disappeared. By contrast, the mobile Inuit took a more flexible approach and hunted both land and marine mammals according to their availability. They continued living in the region without much change to their lifestyle.

A center of activity

In Nuuk, the modern capital of Greenland, an imposing and controversial statue of missionary Hans Egede commemorates his arrival in 1721 to establish a Lutheran mission in a place he called Godthåb.

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In 1776, as trade became more important, the Danish government established the Royal Greenland Trading Department, a trading monopoly that administered the communities on the west coast of Greenland as a closed colony for the next 150 years.

By the 19th century some Kalaallit families who lived in Nuuk/Godthåb had formed an educated, urban class of ministers, educators, artists and writers, although Danish colonists continued to rule.

Meanwhile, Kalaallit families in small coastal communities continued to engage in traditional economic and social activities, based on respect of animals and sharing of resources.

On the more remote east coast and in the far north, colonization took root more slowly, leaving explorers such as American Robert Peary and traders such as Danish-Greenlandic Knud Rasmussen a free hand to employ and trade with local people.

The U.S. formally recognized Denmark’s claim to the island in 1916 when the Americans purchased the Danish West Indies, which are now the U.S. Virgin Islands. And in 1921, Denmark declared sovereignty over the whole of Greenland, a claim upheld in 1933 by the Permanent Court of International Justice. But Greenlanders were not consulted about these decisions.

People gather outdoors carrying red and white flags.
People protest President Donald Trump’s desire to own Greenland outside the U.S. consulate in Nuuk, Greenland, in January 2026. AP Photo/Evgeniy Maloletka

The world arrives

file 20260127 56 l931il.jpg?ixlib=rb 4.1
A 1944 ad urging U.S. customers to buy shortwave radios touts contact with the people of Greenland as one benefit. Courtesy of the Peary-MacMillan Arctic Museum, Bowdoin College, CC BY-NC-ND

World War II brought the outside world to Greenland’s door. With Denmark under Nazi control, the U.S. took responsibility for protecting the strategically important island of Greenland and built military bases on both the east and west coasts. The U.S. made efforts to keep military personnel and Kalaallit apart but were not entirely successful, and some visiting and trading went on. Radios and broadcast news also spread, and Kalaallit began to gain a sense of the world beyond their borders.

The Cold War brought more changes, including the forced relocation of 27 Inughuit families living near the newly constructed U.S. Air Force base at Thule to Qaanaaq, where they lived in tents until small wooden homes were built.

In 1953, Denmark revised parts of its constitution, including changing the status of Greenland from a colony to one of the nation’s counties, thereby making all Kalaallit residents of Greenland also full-fledged citizens of Denmark. For the first time, Kalaallit had elected representatives in the Danish parliament.

Denmark also increased assimilation efforts, promoting the Danish language and culture at the expense of Kalaallisut, the Greenlandic language. Among other projects, the Danish authorities sent Greenlandic children to residential schools in Denmark.

In Nuuk in the 1970s, a new generation of young Kalaallit politicians emerged, eager to protect and promote the use of Kalaallisut and gain greater control over Greenland’s affairs. The rock band Sumé, singing protest songs in Kalaallisut, contributed to the political awakening. https://www.youtube.com/embed/qe-f6jleXFs?wmode=transparent&start=0 Sumé, a rock band singing in Kalaallisut, the Greenlandic language, helped galvanize a political movement for self-determination in the 1970s.

In a 1979 Greenland-wide referendum, a substantial majority of Kalaallit voters opted for what was called “home rule” within the Danish Kingdom. That meant a parliament of elected Kalaallit representatives handled internal affairs, such as education and social welfare, while Denmark retained control of foreign affairs and mineral rights.

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However, the push for full independence from Denmark continued: In 2009, home rule was replaced by a policy of self-government, which outlines a clear path to independence from Denmark, based on negotiations following a potential future referendum vote by Greenlanders. Self-government also allows Greenland to assert and benefit from control over its mineral resources, but not to manage foreign affairs.

Today, Nuuk is a busy, vibrant, modern city. Life is quieter in smaller settlements, where hunting and fishing are still a way of life. While contemporary Greenland encompasses this range of lifestyles, Kalaallit are unified in their desire for self-determination. Greenland’s leaders have delivered this message clearly to the public and to the White House directly.

Susan A. Kaplan, Professor of Anthropology, Director of Peary-MacMillan Arctic Museum and Arctic Studies Center, Bowdoin College and Genevieve LeMoine, Curator, Peary-MacMillan Arctic Museum and Arctic Studies Center, Bowdoin College

This article is republished from The Conversation under a Creative Commons license. Read the original article.

STM Daily News is a vibrant news blog dedicated to sharing the brighter side of human experiences. Emphasizing positive, uplifting stories, the site focuses on delivering inspiring, informative, and well-researched content. With a commitment to accurate, fair, and responsible journalism, STM Daily News aims to foster a community of readers passionate about positive change and engaged in meaningful conversations. Join the movement and explore stories that celebrate the positive impacts shaping our world. 

https://stmdailynews.com/


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Local News

Why Arizona Republicans Are Pushing Back on Light Rail to the State Capitol — and What It Means for the West Valley

Arizona’s debate over a proposed light rail extension to the State Capitol has intensified. Supporters argue it promotes connectivity and equity, while Republicans oppose it due to cost concerns and a preference for car-centric infrastructure. The outcome will impact future west-side transit expansions and shape regional transportation priorities.

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Arizona Republicans are opposing a proposed Valley Metro light rail extension toward the State Capitol, citing concerns over cost, ridership, and long-term value, while supporters argue the project would improve access, equity, and connectivity for west Phoenix.
Image credit: Valley Metro

Arizona’s long-running debate over public transit has flared up again, this time over a proposed Valley Metro light rail extension that would bring rail service closer to the Arizona State Capitol complex. While Phoenix and Valley Metro leaders argue the project is a logical next step in regional mobility, Republican leaders at the state Capitol have mounted strong opposition — creating uncertainty not just for this segment, but for future west-side expansions.

The Case for the Capitol Light Rail Extension

Supporters of the project, including Valley Metro officials, Phoenix city leaders, transit advocates, and many west Phoenix residents, argue that extending light rail toward the Capitol area is both practical and symbolic.

From a planning standpoint, the Capitol is a major employment center that draws thousands of workers, visitors, and students. Transit planners say rail access would reduce congestion, improve air quality, and provide reliable transportation for residents who already depend heavily on public transit.

Proponents also emphasize equity. West Phoenix has historically received fewer infrastructure investments than other parts of the metro area, despite strong transit ridership. For supporters, extending rail service westward is about connecting communities to jobs, education, and government services — not politics.

Why is Arizona fighting over a light rail line to the State Capitol?

There is also a broader regional argument: light rail lines function best as part of a connected network. Leaving a gap near a central civic destination, supporters say, undermines long-term system efficiency.

Why Republican Lawmakers Are Opposed

Republican leaders in the Arizona Legislature see the project very differently.

One major issue is cost. GOP lawmakers frequently point to the rising price of light rail construction, which has increased significantly over the past decade. They argue that rail projects deliver limited benefit compared to their expense and that bus service or roadway improvements could move more people at lower cost.

Usage is another concern. Critics note that light rail serves a relatively small percentage of total commuters in the Phoenix metro area and requires ongoing public subsidies to operate. From this perspective, expanding rail further — especially into politically sensitive areas like the Capitol — is viewed as fiscally irresponsible.

There is also a political and legal dimension. In recent years, Republican lawmakers passed legislation restricting light rail construction near the Capitol complex. While framed as a land-use and security issue, critics argue it reflects deeper ideological opposition to rail transit and urban-oriented infrastructure.

Finally, some GOP leaders simply prefer different transportation priorities. Arizona remains a car-centric state, and many Republican officials believe future investments should focus on highways, autonomous vehicle technology, or flexible transit options rather than fixed rail.

A Political Standoff with Real Transit Consequences

The dispute has become a high-stakes standoff between the Republican-controlled Legislature and Democratic leaders at the city and regional level. While lawmakers may not be able to directly cancel the project, they have significant leverage through funding approvals, oversight committees, and future legislation.

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This uncertainty creates challenges for Valley Metro, which relies on long-term planning, federal funding commitments, and voter-approved local taxes. Transit systems work best with predictability — and political volatility can drive up costs or delay construction.

What This Means for West Valley Light Rail Expansion

The biggest question is what happens next for west Phoenix and the broader West Valley.

If the Capitol-area extension is altered or blocked, Valley Metro may be forced to redesign routes that avoid the restricted area, potentially making service less direct or less useful. That could weaken the case for future westward expansions toward areas like Maryvale or even farther west.

On the other hand, the controversy has also drawn renewed attention to west-side transit needs. Some advocates believe the political fight could energize local support, leading to stronger community backing and clearer messaging about why rail matters in west Phoenix.

Long term, the outcome may set a precedent. If state lawmakers successfully limit rail construction through legislative action, it could signal tighter constraints on future expansions. If cities push forward despite opposition, it may reaffirm local control over transportation planning.

The Bigger Picture

At its core, the debate over light rail to the Arizona State Capitol reflects a broader clash of visions for the region’s future: one focused on dense, transit-oriented growth, and another centered on fiscal restraint and automobile mobility.

For residents of the West Valley, the stakes are tangible. The decision will shape access to jobs, education, and public services for decades. Whether the project moves forward as planned, is rerouted, or delayed entirely, it will leave a lasting imprint on how — and for whom — the Valley’s transit system grows.

As Phoenix continues to expand westward, the question remains unresolved: will light rail be allowed to follow?

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The Earth

How the polar vortex and warm ocean intensified a major US winter storm

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Last Updated on January 28, 2026 by Daily News Staff

People walking in urban setting. Polar vortex.
Boston and much of the U.S. faced a cold winter blast in January 2026. Craig F. Walker/The Boston Globe via Getty Images

How the polar vortex and warm ocean intensified a major US winter storm

Mathew Barlow, UMass Lowell and Judah Cohen, Massachusetts Institute of Technology (MIT)

A severe winter storm that brought crippling freezing rain, sleet and snow to a large part of the U.S. in late January 2026 left a mess in states from New Mexico to New England. Hundreds of thousands of people lost power across the South as ice pulled down tree branches and power lines, more than a foot of snow fell in parts of the Midwest and Northeast, and many states faced bitter cold that was expected to linger for days.

The sudden blast may have come as a shock to many Americans after a mostly mild start to winter, but that warmth may have partly contributed to the ferocity of the storm.

As atmospheric and climate scientists, we conduct research that aims to improve understanding of extreme weather, including what makes it more or less likely to occur and how climate change might or might not play a role.

To understand what Americans are experiencing with this winter blast, we need to look more than 20 miles above the surface of Earth, to the stratospheric polar vortex.

A globe showing the polar vortex and jet stream overlapping over the area where the storm hit.
On the morning of Jan. 26, 2026, the freezing line, shown in white, reached far into Texas. The light band with arrows indicates the jet stream, and the dark band indicates the stratospheric polar vortex. The jet stream is shown at about 3.5 miles above the surface, a typical height for tracking storm systems. The polar vortex is approximately 20 miles above the surface. Mathew Barlow, CC BY

What creates a severe winter storm like this?

Multiple weather factors have to come together to produce such a large and severe storm.

Winter storms typically develop where there are sharp temperature contrasts near the surface and a southward dip in the jet stream, the narrow band of fast-moving air that steers weather systems. If there is a substantial source of moisture, the storms can produce heavy rain or snow.

In late January, a strong Arctic air mass from the north was creating the temperature contrast with warmer air from the south. Multiple disturbances within the jet stream were acting together to create favorable conditions for precipitation, and the storm system was able to pull moisture from the very warm Gulf of Mexico.

A map of storm warnings on Jan. 24, 2026.
The National Weather Service issued severe storm warnings (pink) on Jan. 24, 2026, for a large swath of the U.S. that could see sleet and heavy snow over the following days, along with ice storm warnings (dark purple) in several states and extreme cold warnings (dark blue). National Weather Service

Where does the polar vortex come in?

The fastest winds of the jet stream occur just below the top of the troposphere, which is the lowest level of the atmosphere and ends about seven miles above Earth’s surface. Weather systems are capped at the top of the troposphere, because the atmosphere above it becomes very stable.

The stratosphere is the next layer up, from about seven miles to about 30 miles. While the stratosphere extends high above weather systems, it can still interact with them through atmospheric waves that move up and down in the atmosphere. These waves are similar to the waves in the jet stream that cause it to dip southward, but they move vertically instead of horizontally.

file 20260124 56 ufh1tk
A chart shows how temperatures in the lower layers of the atmosphere change between the troposphere and stratosphere. Miles are on the right, kilometers on the left. NOAA

You’ve probably heard the term “polar vortex” used when an area of cold Arctic air moves far enough southward to influence the United States. That term describes air circulating around the pole, but it can refer to two different circulations, one in the troposphere and one in the stratosphere.

The Northern Hemisphere stratospheric polar vortex is a belt of fast-moving air circulating around the North Pole. It is like a second jet stream, high above the one you may be familiar with from weather graphics, and usually less wavy and closer to the pole.

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Sometimes the stratospheric polar vortex can stretch southward over the United States. When that happens, it creates ideal conditions for the up-and-down movement of waves that connect the stratosphere with severe winter weather at the surface.

file 20260124 56 1rstmk
A stretched stratospheric polar vortex reflects upward waves back down, left, which affects the jet stream and surface weather, right. Mathew Barlow and Judah Cohen, CC BY

The forecast for the January storm showed a close overlap between the southward stretch of the stratospheric polar vortex and the jet stream over the U.S., indicating perfect conditions for cold and snow.

The biggest swings in the jet stream are associated with the most energy. Under the right conditions, that energy can bounce off the polar vortex back down into the troposphere, exaggerating the north-south swings of the jet stream across North America and making severe winter weather more likely.

This is what was happening in late January 2026 in the central and eastern U.S.

If the climate is warming, why are we still getting severe winter storms?

Earth is unequivocally warming as human activities release greenhouse gas emissions that trap heat in the atmosphere, and snow amounts are decreasing overall. But that does not mean severe winter weather will never happen again.

Some research suggests that even in a warming environment, cold events, while occurring less frequently, may still remain relatively severe in some locations.

One factor may be increasing disruptions to the stratospheric polar vortex, which appear to be linked to the rapid warming of the Arctic with climate change.

Two globes, one showing a stable polar vortex and the other a disrupted version that brings brutal cold to the South.
The polar vortex is a strong band of winds in the stratosphere, normally ringing the North Pole. When it weakens, it can split. The polar jet stream can mirror this upheaval, becoming weaker or wavy. At the surface, cold air is pushed southward in some locations. NOAA

Additionally, a warmer ocean leads to more evaporation, and because a warmer atmosphere can hold more moisture, that means more moisture is available for storms. The process of moisture condensing into rain or snow produces energy for storms as well. However, warming can also reduce the strength of storms by reducing temperature contrasts.

The opposing effects make it complicated to assess the potential change to average storm strength. However, intense events do not necessarily change in the same way as average events. On balance, it appears that the most intense winter storms may be becoming more intense.

A warmer environment also increases the likelihood that precipitation that would have fallen as snow in previous winters may now be more likely to fall as sleet and freezing rain.

There are still many questions

Scientists are constantly improving the ability to predict and respond to these severe weather events, but there are many questions still to answer.

Much of the data and research in the field relies on a foundation of work by federal employees, including government labs like the National Center for Atmospheric Research, known as NCAR, which has been targeted by the Trump administration for funding cuts. These scientists help develop the crucial models, measuring instruments and data that scientists and forecasters everywhere depend on.

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This article, originally published Jan. 24, 2026, has been updated with details from the weekend storm.

Mathew Barlow, Professor of Climate Science, UMass Lowell and Judah Cohen, Climate scientist, Massachusetts Institute of Technology (MIT)

This article is republished from The Conversation under a Creative Commons license. Read the original article.

The science section of our news blog STM Daily News provides readers with captivating and up-to-date information on the latest scientific discoveries, breakthroughs, and innovations across various fields. We offer engaging and accessible content, ensuring that readers with different levels of scientific knowledge can stay informed. Whether it’s exploring advancements in medicine, astronomy, technology, or environmental sciences, our science section strives to shed light on the intriguing world of scientific exploration and its profound impact on our daily lives. From thought-provoking articles to informative interviews with experts in the field, STM Daily News Science offers a harmonious blend of factual reporting, analysis, and exploration, making it a go-to source for science enthusiasts and curious minds alike. https://stmdailynews.com/category/science/


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