Climate
Every Rumble Sounds Like the Mountain Falling Again: Inside Meppadi’s Second Landslide in Two Years
A community that survived one of India’s deadliest landslides is still relearning how to live with the sound of the hills coming down.
On July 7, 2026, around 11 a.m., a rumble echoed through Meppadi and a six-year-old boy ran. He had stayed home from school that day. The moment he heard the sound, he rushed to his mother, wrapped his arms around her, and refused to let go. He was trembling. For him, the sound wasn’t just noise. It was 2024 again.
The boy had survived the Chooralmala landslide that killed hundreds of his neighbours two years ago, and he has been in counselling ever since. On this day, a new landslide six kilometres away, at the Anakkompoyil–Meenakshi tunnel construction site in Kalladi, had reopened the wound.
“For him, it was like reliving the 2024 landslide,” his grandmother, Roshna Yusaf, a social worker and former Meppadi block panchayat member, told EdPublica. “The moment he heard the familiar sound again, he came running and held on to his mother. He refused to stay apart.”
Meppadi is a small hill town in Wayanad, a hilly district in the southern Indian state of Kerala, set in the Western Ghats — a steep, rain-soaked mountain range that runs down India’s western coast and is globally recognised as one of the world’s biodiversity hotspots. It was here, in July 2024, that a series of landslides buried the neighbouring villages of Mundakkai and Chooralmala, killing hundreds of people in one of the deadliest disasters in Kerala’s history. Two years on, Meppadi panchayat — the local administrative area that includes both those villages, Kalladi, and the town itself — is still rebuilding. In July 2026, it happened again.
The Kalladi landslide killed eight people — seven migrant workers and the project’s construction manager — in a disaster that geo-scientists have since called preventable, pointing to inadequate geological and hydrological study for a tunnel driven through fragile Western Ghats terrain. Rescue operations ran for six days before all the bodies were recovered. Around 40 families from nearby Meenakshi were moved to relief camps.
For Meppadi, still rebuilding after the 2024 Chooralmala–Mundakkai disaster, it was not an isolated accident. It was a second interruption to childhoods, livelihoods, and a fragile sense of security the community had spent two years trying to rebuild.
When Childhood Is Interrupted
The six-year-old is one of many children in Meppadi still carrying the trauma of repeated landslides. For them, the sound of heavy rain or collapsing earth is enough to bring back memories they have spent months trying to overcome.
The latest disaster has again disrupted their education.
“It has been only one month since schools reopened. Now the children cannot go to school,” said Biji Zhacahi, a mother of two from Meenakshi.
“Every year, it is the children’s future that gets disrupted. Because of these repeated incidents, some children even become reluctant to go to school. As parents, we are always worried about their safety.”
Roshna pointed out how narrowly the community escaped a far larger tragedy. The Kalladi landslide struck at 11 a.m. — a school day, but after the morning rush.
“If the landslide had happened in the morning, many students could have lost their lives, because they usually board their school buses from the nearby bus stop,” she said.

For many families, interrupted schooling — and the fear of sending children to school at all — has become another fixture of every monsoon.
Women Living in Uncertainty
Repeated landslides have also reshaped daily life for women, many of whom manage households alone while their husbands work abroad.
“Women here have forgotten how to smile,” Roshna said. Years of facing one disaster after another, she said, have left many women emotionally exhausted.
“Every time it rains heavily, the same questions come back — what if another landslide happens, where do we run, how do we protect our children? The fear never really leaves.”
When Livelihoods Depend on the Weather
The uncertainty extends well beyond the home. It touches almost every livelihood in Meppadi.
“When it rains, it rains continuously for several days,” said Krishna Raj, a shop owner in Meppadi town. “Transportation becomes difficult. We have to travel to nearby towns to bring supplies for our shops, but during heavy rain that is not always possible.”
With roads frequently cut off, even running a small business becomes a gamble.
For jeep driver Mansoor Ali, every journey through the hills carries its own anxiety.
“It is very scary to drive here at night,” he said. “Whenever I hear a loud sound, I fear it is another landslide. In the dark, we don’t even know where to run. That is how most drivers here live.”
Many residents had already shifted from agriculture to tourism after repeated crop losses from wild animal attacks made farming increasingly difficult. Landslides, and the restrictions on tourist movement that follow them, have now unsettled that livelihood too.
“People moved to tourism because farming became difficult,” said Sijo, who works in the sector. “Now tourist visits and homestays have also been affected.”
For many families in Meppadi, there is no livelihood the monsoon has left untouched.
A Tunnel That Brings Hope — and Questions
Despite the tragedy at the construction site, residents largely continue to support the Anakkompoyil–Meenakshi (Kalladi–Meppadi) tunnel project. The twin-tunnel road is meant to cut straight through the hills separating hilly, landlocked Wayanad from the neighbouring coastal district of Malappuram, replacing the long, congested detour drivers currently take over the Thamarassery Ghat — a winding mountain pass notorious for accidents and traffic jams.
“We have great expectations from this project,” said Nishal, a resident of Meenakshi. “Better connectivity is something people here have needed for years.” At the same time, he added, residents are uneasy about how the construction is being carried out.
Roshna fears that soil excavated from the tunnel is being dumped on the slopes above her home. “If more soil is dumped above the mountain, many houses, including mine, could be affected,” she said. “I am 56 years old. I cannot build another house.”
Her fear echoes the explanation Kerala’s government has itself offered for the disaster: a state minister called it not a natural landslide but a man-made one, a clear case of lapse, and said the district collector had warned the tunnel’s contractor, Konkan Railway, in writing about the danger — a warning that went unheeded. Following the incident, the Kerala government suspended all construction on the Rs 2,134-crore tunnel project pending two separate investigations.
Nishal recalled that a strong artesian spring had emerged during the tunnel’s initial construction phase the previous summer. A paddy field near the site had also been cleared and filled in by the construction company, he said, and inadequate drainage afterward let water and loosened soil flow downhill. Many residents, he added, still don’t know whether they will eventually be displaced, because the project’s final alignment has never been clearly communicated to them.
“People have doubts because they don’t have clear information,” he said. “But almost everyone supports the project because we need better connectivity.”
The tension between that need and its risks is not new. A legal challenge to the tunnel had argued that it cut through an ecologically fragile region already prone to repeated landslides, and that environmental safeguards were inadequate. In April 2026, the Supreme Court declined to halt construction, calling the project one of significant public importance and leaving compliance to statutory regulators. The court settled the legal question. The Kalladi landslide reopened the scientific one.
A Disaster With a Familiar Shape
The parallels to 2024 are not just emotional; they are geological. Both disasters struck the same short stretch of hill country in Meppadi panchayat, where a thick layer of weathered, unconsolidated lateritic soil sits over highly fractured bedrock — a combination that loses its shear strength rapidly once intense rainfall raises pore-water pressure inside the slope. Researchers who studied the 2024 disaster concluded that this fragile geology, not any single cause, was what turned extreme rain into a catastrophic slope failure, and warned that the region’s concave slopes, which concentrate runoff, remain especially susceptible to future failures.
The 2024 Chooralmala–Mundakkai landslide remains one of the deadliest in Kerala’s history. Official confirmed deaths stood at 231 for months, before the state government declared all 32 people still listed as missing to be dead, in a notification issued on February 10, 2025 — a bureaucratic closing of the books that, for families, only formalised a grief they had already been living with. Independent researchers, using different counting methods, have since put the true toll considerably higher.
For Meppadi, that history is why an eight-death landslide at a tunnel site feels less like a new disaster than a recurrence — proof that a community built on some of the most landslide-prone slopes in the Western Ghats has yet to find a way to build, or to grieve, that outlasts the next monsoon.
A Town That Never Stops Recovering
For Meppadi, the latest landslide is not an isolated tragedy. It is another interruption in a recovery that never seems to end.
Children grow up carrying trauma. Women wait anxiously through every spell of rain. Workers wonder whether their livelihoods will survive another monsoon.
Yet amid the uncertainty, residents say it is the community’s solidarity that helps them move forward.
“From the NDRF and Fire and Rescue teams to local people, everyone stands together with one heart to rebuild the area,” said Meppadi Grama Panchayat President Ramla Hamza. “The resilience of the people, even after facing repeated disasters, makes these difficult times a little easier to bear.”
The rescue teams have left, and the roads will eventually reopen.
But in Meppadi, the true cost of living is not measured only in damaged homes or lost income. It is measured in a community forced to begin recovering all over again, every time the hills give way.
Ground report from Meppadi, Wayanad, Kerala, India. Some names of residents quoted appear as given to our reporter in the field.
Climate
Why India Is Studying the Arctic to Understand Its Monsoon
As BRICS countries discuss closer cooperation in ocean and polar science, research is drawing attention to a distant climate connection: changes in Arctic sea ice may influence India’s monsoon. The emerging evidence could have implications for rainfall patterns, water security and climate forecasting.
India’s growing interest in polar science comes as researchers are finding stronger links between changes in the Arctic and the climate systems that influence the country. The issue came into focus this month when India hosted the 8th BRICS Working Group Meeting on Ocean and Polar Science and Technology in Goa, bringing together scientists and officials from eight BRICS countries to discuss cooperation in ocean and polar research. The meeting covered scientific collaboration, technology and the use of research to address environmental challenges.
For India, the discussion has a direct climate relevance. The Arctic lies thousands of kilometres away, yet changes in its sea ice and atmosphere can affect large-scale circulation patterns that reach into Eurasia and interact with the South Asian monsoon.
That connection matters because India’s dependence on the monsoon leaves little room for major shifts in rainfall patterns. Agriculture, reservoirs, groundwater recharge, hydropower and flood risk all depend on when and where rain arrives.

The Arctic–monsoon Link
Scientists have been investigating the relationship for several years. A 2026 study examined Arctic sea-ice extent and Indian summer monsoon rainfall using observations and reanalysis data from 1979 to 2022. It found an inverse relationship between Arctic sea ice and Indian monsoon rainfall, particularly during August and September. The researchers reported that periods of lower Arctic sea ice were associated with stronger rainfall over parts of India and changes in the spatial distribution of monsoon rainfall.
The finding does not mean that Arctic sea-ice loss directly determines India’s rainfall. The monsoon is influenced by several interacting systems, including ENSO, the Indian Ocean Dipole, Indian Ocean temperatures and atmospheric circulation.
The significance of the study lies in identifying the Arctic as one component of that larger system. Earlier research has produced similar evidence. A study published in the International Journal of Climatology examined Arctic sea ice and Indian precipitation between 1979 and 2021. It found significant relationships between Arctic sea-ice variability and precipitation over parts of India, with the strength of the relationship changing with the state of the Arctic Oscillation.
A 2024 study in Remote Sensing of Environment looked at different Arctic regions rather than treating the Arctic as a single system. It found significant relationships between spring sea-ice conditions in regions including the Central Arctic and Barents-Kara sector and Indian summer monsoon rainfall. The researchers linked these relationships to changes in atmospheric circulation across Eurasia.
Research in 2025 reached a similar conclusion about the importance of regional differences. It examined the Atlantic and Pacific sectors of the Arctic separately and found that their relationships with Indian rainfall differ. The study also examined interactions involving the North Atlantic Oscillation and ENSO.
Together, these studies point towards a climate system in which the Arctic can influence Indian rainfall through several atmospheric pathways.
How can Melting Sea Ice Affect Rainfall in India?
The mechanism begins with the loss of sea ice. Ice reflects a large proportion of incoming solar radiation. When ice retreats, darker ocean water is exposed and absorbs more heat. The reduction in sea ice also changes exchanges of heat and moisture between the ocean and atmosphere.
Those changes can alter atmospheric pressure patterns and generate or modify large-scale waves in the atmosphere. Some of these disturbances can propagate towards Eurasia and South Asia. The 2026 study found evidence that changes associated with Arctic sea ice can modify atmospheric circulation over South Asia, affecting the distribution of monsoon rainfall.
The relationship is particularly relevant during the later monsoon season. That is significant because rainfall in August and September contributes substantially to India’s seasonal water availability, while shifts in rainfall during this period can affect crops and reservoir management.
The research, however, does not establish a simple cause-and-effect relationship for every monsoon season. The influence of Arctic conditions depends on the state of other climate systems at the same time.
India’s Climate has Several Moving Parts
The Arctic is one part of a much larger climate network. The Indian Ocean has a direct influence on the monsoon through sea-surface temperatures, ocean heat and moisture transport. ENSO can alter atmospheric circulation across the tropics. The Indian Ocean Dipole can strengthen or weaken rainfall in different parts of India.
The Himalayas add another layer. Changes in snow cover and glaciers affect the timing of water entering major river systems. Research on the Brahmaputra basin has estimated that snowmelt contributes about 6% of annual basin flow, but its contribution rises to roughly 21% in the upper Brahmaputra. Climate projections indicate declining snowmelt even as changes in precipitation could increase total annual water yield.
This distinction matters for water management. A change in the source and timing of river water can affect agriculture and hydropower even when annual river discharge does not fall.
India therefore has several climate systems operating at different scales: the Arctic and its atmospheric influence, the Himalayan cryosphere, the Indian Ocean and the tropical systems that drive the monsoon. Understanding how they interact is becoming increasingly important for forecasting.
Why India Needs Long-term Polar Observations
India established Himadri, its first Arctic research station in Svalbard, in 2008. Indian research in the region now covers atmospheric science, glaciers, sea ice, marine ecosystems and other aspects of the Arctic environment.
The purpose is not limited to documenting polar warming. Long-term observations allow scientists to compare changes in Arctic conditions with atmospheric circulation, Himalayan processes and Indian rainfall. Satellite observations extend this coverage, while climate models can be used to test possible mechanisms.
This kind of research requires continuity. A single expedition cannot establish whether an Arctic change has influenced the Indian monsoon. Researchers need observations collected over decades, together with historical records and data from other parts of the climate system. That is where international scientific cooperation can become useful.
What BRICS Cooperation Could Add
The BRICS meeting in Goa brought ocean and polar science into the same discussion. That is relevant to India because its climate concerns span both ends of the Earth system. The country has interests in Arctic research, Antarctic research, Himalayan cryosphere studies and Indian Ocean observations.
Ocean and polar research also requires expensive infrastructure. Research vessels, autonomous instruments, satellite observations and specialised equipment are difficult for individual institutions to maintain at the scale needed for long-term climate research.
Cooperation can help researchers share observations, technology and expertise. The value of such partnerships, however, will depend on what they produce after the meetings: shared datasets, joint expeditions, sustained observations, modelling capacity and research that improves understanding of regional climate risks.
What This Means for India
The Arctic–monsoon relationship is scientifically significant, but it should not be turned into a prediction that Arctic sea-ice loss will automatically bring more rain to India. The evidence is more complicated. Different parts of the Arctic appear to influence India differently. The relationship changes with atmospheric circulation and interacts with ENSO, the Indian Ocean Dipole and other climate drivers. Some studies identify statistical associations, while others investigate the physical mechanisms that could explain them.
The next challenge is to determine how these interactions behave as the planet continues to warm. For India, that work has a practical purpose. Better understanding of the Arctic’s influence could improve seasonal monsoon prediction and help identify conditions associated with shifts in rainfall. Combined with observations from the Himalayas and Indian Ocean, it could also improve assessments of water availability and extreme rainfall.
The BRICS meeting provides the diplomatic and scientific setting for that work. The harder task begins after the meeting: collecting enough evidence to understand how changes at the top of the planet can alter weather and water far to the south.
Climate
India Doesn’t Need More Climate Awareness. It Needs Climate Agency
India’s climate conversation is shifting from awareness to action. Climate communication researcher Jagadish Thaker explains why growing concern about climate change must translate into agency, skills, employment and meaningful participation in the clean-energy transition.
India may not have a climate-awareness problem. It may have an action and agency problem. That is one of the central questions emerging from the work of Dr. Jagadish Thaker, a Senior Lecturer at the University of Queensland and a Principal Investigator on the Yale Program on Climate Change Communication’s research on public attitudes towards climate change in India.
Thaker studies how people understand climate change, how media and communication shape public opinion, and what turns concern into action. His recent work has provided one of the most detailed pictures yet of how Indians perceive climate change and the country’s clean-energy transition.
The latest Climate Change in the Indian Mind survey, conducted by the Yale Program on Climate Change Communication and CVoter, interviewed 5,427 Indian adults between December 2025 and February 2026. It found that 88% of Indians are worried about global warming and 84% say they have personally experienced its effects. At the same time, 50% say they know little or nothing about global warming, while 84% believe it is happening.
For Thaker, that apparent contradiction is important. People may not always use the language of climate science, but their experiences of heat, floods, changing rainfall and other environmental changes are shaping how they understand the issue.
The findings also point towards a larger challenge: how can climate communication help people move from recognising the problem to participating in solutions?
In this conversation with EdPublica, Thaker discusses what India’s changing climate attitudes reveal about public understanding, why extreme weather can be a powerful entry point for climate communication, and why climate education should connect climate action with jobs, skills, innovation and community participation.
“The challenge now is turning concern into sustained engagement and effective action”
Climate communication has traditionally focused on raising awareness. But your latest survey suggests Indians are already deeply concerned about climate change. What should the next phase of climate communication look like?
The first communication challenge is understanding how much Indians know about the causes and consequences of climate change. Our findings indicate that awareness is low, but a brief explanation is all that is required for Indians to connect their experience with extreme weather events to climate change. So, we must help people make sense of the scientifically accurate causes and consequences, so Indians understand that the problem is not rooted in local issues alone but is also a global issue.
The second communication challenge is to move beyond awareness and focus more on efficacy, agency and solutions. People need credible information about what governments, businesses, communities and households can do, how clean-energy transitions create jobs and improve air quality, and how local actions connect to larger climate goals.
In short, the next generation of climate communication should help people see not only the problem, but also realistic pathways towards solutions and resilience.
The biggest communication story in this survey is not that Indians are unaware of climate change. It is that many Indians who know little about the term ‘global warming’ nevertheless recognise environmental changes around them, report experiencing climate impacts personally, and strongly support climate and energy solutions.
The challenge now is turning concern into sustained engagement and effective action. Extreme weather may be changing how Indians understand climate change
Dr. Jagadish Thaker, Public concern about climate change has risen over the past decade. What do you think has changed?
According to a recent study between 1995 and 2024, Indians faced 430 extreme weather events, including cyclones, floods and severe heat waves, which resulted in around 80,000 deaths and USD 170 billion in economic losses.
The India Meteorological Department has also reported that India recorded its eighth-warmest year on record in 2025. These experiences matter because people often understand climate change through what they experience in their daily lives. Extreme heat, changing rainfall, floods and droughts can make an otherwise abstract global issue much more tangible.
“Climate education should not focus only on risks”
Ninety-five percent of Indians support renewable-energy training for women and youth. How important is climate education in schools and communities?
The support is remarkable. Ninety-five percent favour a national programme prioritising training youth and women for renewable-energy jobs, and 93% support renewable-energy job training more generally.
These findings suggest that climate communication should not focus only on risks. Indians appear highly interested in solutions, skills and opportunities.

Effective climate education can help people understand climate change, but it can also help them see pathways to participate in the transition through employment, innovation and community action. Education is most powerful when it links climate action to everyday benefits and opportunities. Public support may not be the biggest barrier to India’s energy transition
Most Indians support replacing coal with solar and wind. But coal remains central to India’s electricity system. Why is it difficult to bring about behavioural change and effective public policy even when public opinion is this strong?
Public opinion is an important factor shaping energy systems. Infrastructure investments, energy security concerns, employment, institutional capacity and economic considerations all influence policy outcomes.
There are also ongoing challenges around technology upgrades and funding for major changes across the economy and country.
What is striking in our data is how consistently supportive Indians are of the energy transition. These findings suggest that public opinion may be less of a barrier to climate and energy policy than is often assumed.
For communicators, one challenge is helping people understand how long-term energy transitions actually occur and what role citizens can play in them.
Nearly one in three Indians say they have already moved or considered moving because of climate-related disasters. What does this reveal about how climate change is reshaping everyday life?
Twenty-eight percent of Indians report that they have either already moved (11% ) or considered moving (18%) because of weather-related disasters such as extreme heat, droughts, flooding or sea-level rise. Climate change is already influencing decisions about where people live
From a communication perspective, these findings suggest that climate change is not just an environmental issue. It is increasingly affecting decisions about livelihoods, homes and community stability.
“Indians perceive climate change as a present-day reality”
India is among the world’s largest carbon emitters, yet its per-capita emissions remain far below those of most developed countries while it also faces significant climate impacts. How should we understand this imbalance?
Questions about responsibility and equity extend beyond the scope of this public-opinion survey.
What our findings show is that Indians perceive climate change as a present-day reality. Fifty-seven percent say people in India are already being harmed by global warming, 84% say global warming will harm people in India, and 85% say it will harm future generations.
Regardless of broader debates about responsibility, climate change is widely viewed by Indians as a significant and immediate challenge, and there is strong support for the government to pursue ambitious action plans on climate change and the clean-energy transition.
Your survey covers one of the world’s most diverse populations across 12 languages. What important regional differences lie beneath the national averages?
Absolutely. National averages are useful, but they never tell the entire story. India is extraordinarily diverse geographically, culturally, economically and politically. Many climate attitudes vary across regions and populations. India’s national averages hide significant regional differences.
Readers interested in these differences should explore the Yale Climate Opinion Maps for India, which provide state- and district-level estimates of climate beliefs, risk perceptions and policy support.
Those maps reveal substantial geographic variation that national averages can conceal, while also showing that concern about climate change and support for many climate policies are widespread across much of the country.
If this survey were conducted after an even more intense summer, would public concern rise further, or have we already reached a ceiling?
We cannot know without collecting the data. Public opinion often responds to highly visible and personally experienced events. However, concern is already extremely high in this survey. Ninety-two percent say global warming is at least somewhat important to them personally.
One interesting question for future research is how extreme weather events affect not just concern, but support for specific adaptation and mitigation policies.
Climate
Western Himalaya Heating Faster Than East, Study Finds; Snow Loss Could Surge
A new study finds the western Himalaya is warming faster than the central and eastern regions, with major losses in spring snow projected by 2100.
Western Himalaya warming is accelerating faster than in the central and eastern Himalayas, with the region projected to face the greatest snow loss by 2100, a new climate study finds.
A new study combining 120 years of observed temperature records (1901–2020) with eight global climate models finds that the western Himalaya (Ladakh, Jammu & Kashmir and Himachal Pradesh) is heating up more quickly than the central and eastern stretches of the range — a pattern that holds across every season and every emission scenario the researchers tested.
The imbalance shows up in multiple ways: winters are warming faster than springs, nights are warming faster than days, and by the end of the century, the western Himalaya stands to lose far more of its spring snow cover than the rest of the range, with the gap between low- and high-emission futures widening sharply the longer emissions stay high.
Western Himalaya warming is accelerating across seasons
A research study, Vulnerability of the Himalayan region under the climate change, published in the Journal of Earth System Science, led by the Department of Remote Sensing and Geoinformatics, Birla Institute of Technology (BIT), Mesra, Ranchi, with the Indian Institute of Tropical Meteorology (IITM), Pune, and Ashoka University, assessed how temperature and snow are changing across three sectors of the Indian Himalayan range, and how far that change could go by 2100.
The researchers drew on two sources of evidence: 120 years of recorded ground-station temperatures across the region, from 1901 to 2020, and eight global climate models that were first validated against that historical record and then projected forward to the year 2100 under five emissions scenarios, ranging from steep near-term cuts to continued high fossil-fuel use. Two seasons were examined: winter, when snow accumulates, and the pre-monsoon spring months, when it melts.

The range is split into three stretches, studied separately: the western Himalaya (Ladakh, Jammu & Kashmir, and Himachal Pradesh), the central Himalaya (largely Uttarakhand), and the eastern Himalaya (Sikkim, Arunachal Pradesh, and the wider North-East). Between them, they hold more than 15,000 glaciers and feed the Indus, Ganges and Brahmaputra, the rivers that roughly 1.5 billion people depend on.
The warming has already reached about 1°C, and it is not evenly spread
Compared with the first three decades of the 1900s, all three stretches of the range had already warmed by close to 1°C in winter by the two decades to 2014: 1.06°C in the western Himalaya, 0.96°C in the central Himalaya and 1.09°C in the east. Springs had warmed by 1.08°C in the west, and 0.83°C in the centre and east. The warming has not arrived at a steady pace. Warmer-than-normal years have become the rule rather than the exception across all three stretches over the past 20–30 years, most of the change has come recently, the study said.
“The Himalaya is often discussed as a single system, but our observations and models both say otherwise. The western Himalaya consistently emerges as the most sensitive stretch — it warms the most and loses the most snow under every pathway we tested. That has direct consequences for the states that sit in it,” said Protyusha Mukhopadhyay, lead author, Birla Institute of Technology (BIT), Mesra.
Under high emissions, western Himalayan winters may warm by more than 7°C
The models show the same west-to-east pattern throughout the century. If emissions stay high, winters by 2081–2100 would be 7.18°C warmer in the western Himalaya, 6.71°C warmer in the central Himalaya and 5.82°C warmer in the east, compared with the early 1900s. Springs warm in the same order: 6.91°C, 6.41°C and 5.16°C.
Himalayan Warming: Key Findings
- 1.06°C — winter warming in the western Himalaya already observed
- 7.18°C — projected winter warming in the western Himalaya by 2081–2100 under high emissions
- 95.9 kg/m² — projected western Himalayan spring snow loss under the highest-emission pathway
- 32 kg/m² — projected spring snow loss even under the lowest-emission pathway by the end of the century
- 1.23°C — rise in western Himalayan winter night-time temperatures
- 1.5 billion — approximate number of people dependent on rivers fed by the Himalayan region
“In the west and centre, winters are warming faster than springs. Less snow on the ground would mean a darker surface, which absorbs more heat, which melts more snow. It matters because winter is the season in which snow is supposed to build up; warmer winters mean less snow banked for the melt months that follow,” said Parthasarathi Mukhopadhyay, corresponding author, Ashoka University.
Nights are warming faster than days
One of the clearest signals in the observational record is that minimum (night-time) temperatures are rising faster than maximum (daytime) temperatures across the western and central Himalaya. In the western Himalaya, winter minimum temperatures rose 1.23°C against 0.87°C for day temperatures; in spring, 1.25°C against 0.91°C. In the central Himalaya the gap is wider still in winter (1.20°C against 0.72°C).
The eastern Himalaya is the exception, where winter maximum temperatures rose more (1.19°C) than minimum (0.99°C). Warmer nights matter because they shorten the hours in which snow and ice can refreeze. That speeds up melting, and changes when the meltwater reaches the rivers below.
“Rising night-time temperatures are the quieter half of this story, and arguably the more consequential one. When the cold nights that let snowpack recover start disappearing, you change the melt cycle itself rather than how much snow falls, but when the water arrives downstream,” said Dr Swagata Payra, co-author, BIT Mesra.
Spring is where the snow is being lost
Across all three stretches of the range, spring sees greater snow loss than winter, and the western Himalaya loses by far the most. The study measures this as the weight of snow sitting on each square metre of ground. Over the western Himalaya, spring snow falls away steadily even on the lowest-emission path: by 24.2 kg per square metre by 2040, 27.4 kg by 2060 and 32 kg by the end of the century. On the highest-emission path, that end-of-century loss reaches 95.9 kg per square metre, enough to point towards an almost complete loss of seasonal snow in some pockets of the region, the authors said.
The central Himalaya loses less, though still a substantial amount: between 17.0 and 34.9 kg per square metre by the end of the century, depending on the emissions path. The eastern Himalaya loses the least, between 5.5 and 11.1 kg. Winter follows the same pattern. Western Himalayan snow loss by the end of the century ranges from 9.5 kg per square metre on the lowest-emission path to 53.2 kg on the highest.
The gap between emission pathways
Western Himalayan winters end the century 2.55°C warmer if emissions fall sharply, or 7.18°C warmer if they do not (a gap of 4.6°C). By 2100, a high-emission trajectory would strip roughly three times more spring snow from the region than a low-emission one, and more than five times more winter snow. The eight models largely agree on the next two to three decades. They diverge much more towards 2100 because how much the region warms by then depends on choices that have not yet been made.
“The models agree on where we are headed over the next two to three decades. What remains open is the second half of the century, and that is determined by emissions rather than by anything intrinsic to the mountains. A low-emission pathway does not stop the warming, but it changes its magnitude by several degrees,” said Mukhopadhyay
The eastern Himalaya warms the least of the three and loses the least snow, and its outlook varies the least across the emission paths. However, the study notes that the east has become a hotspot for glacial lake outburst floods that are sudden, destructive floods released when a lake dammed by glacial debris gives way. “That risk is expected to spread westward in the future, driven by retreating glaciers and the new lakes they leave behind, not by temperature alone,” said Protyusha.
The authors call for region-specific climate services and adaptation policy; enhanced monitoring that combines in-situ networks, satellite products and sustained high-resolution modelling to track glacier and snow dynamics in near real time; strengthened early-warning systems; sustainable water management; community-level resilience programmes; and transboundary cooperation. How water actually moves through these high mountains is still poorly captured by models, and more measurement on the ground is needed before it can be said with confidence how much ice and snow melts each year, and how much of that reaches the rivers below, the authors said.
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