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More than half of global cropland areas could see a decline in the number of suitable crops under a warming scenario of 2C, new research finds.

The study, published in Nature Food, projects how climate change will modify the areas suited for growing 30 major crops under four scenarios, ranging from 1.5 to 4C of global warming.

It finds that under just 1.5C of warming, more than half of the studied crops would suffer from an overall loss of potential suitable cropland, compared to the current climate.

While warming would decrease crop diversity in the tropics, it would increase in areas far from the equator, “offering opportunities for climate change adaptation”, the authors write.

One scientist, who was not involved in the study, tells Carbon Brief that expanding research beyond just staple crops is “essential to understand[ing] the full impact of climate change on agriculture”, adding that “it is exciting to see more work in this space”.

Declining ‘safe’ space for crops

Cultivating a diverse range of crops contributes to a more stable and diverse food supply.

For example, having a wide variety of crops allows farmers to select the crops that will be most resilient to extreme events, such as drought.

Tropical fruits variety from Malaysia, including Durian, banana, star fruit, rambutan, jackfruit, longan, and mata kuching. Credit: Scenics and Science / Alamy Stock Photo
Tropical fruits variety from Malaysia, including Durian, banana, star fruit, rambutan, jackfruit, longan, and mata kuching. Credit: Scenics and Science / Alamy Stock Photo

In order to understand how climate change will affect future potential crop diversity, the researchers identify the “safe climatic space” – or climate “niche” – for 30 major crops. This approach “maps the current climatic space of the major production areas of each crop”, based on annual rainfall, biotemperature and aridity.

(Biotemperature is the average of monthly average temperatures above 0C and below 30C, and is a method of considering both temperature and growing season.)

Using the “safe climatic space” approach, the authors calculate crop diversity by counting the number of crops that could be grown in a specific area in the future.

Then, the researchers project how these areas would change under the four future warming scenarios of 1.5C, 2C, 3C and 4C above pre-industrial levels, compared to the current climate (1990-2020). 

The study finds that under a 1.5C warming scenario, more than half of the 30 crops analysed would see a net decrease in their global potential cropland area. The most affected crops are wheat, barley, soya beans, lentils and potatoes.

Beyond 2C warming, the declines in suitable areas for the 30 crops become more pronounced – in some cases approaching and passing 50%, the study notes.

In a 3C scenario, all of the 30 crops studied would have their suitable cropland area reduced, with the same set of crops most affected.

The chart below shows the percentage changes in global potential cropland area for all the crops under the four warming scenarios examined. Each colour represents a level of global warming.

The 30 crops were classified into five groups: cereals, fruits and vegetables, oil crops, pulses and starchy roots.

Net change in total cropland area within SCS compared to baseline (%)
The net percentage change in global potential cropland area with a safe climatic space (SCS) for the 30 crops analysed, under four global warming scenarios: 1.5C (brown), 2C (light red), 3C (orange) and 4C (yellow), compared to the current (1990-2020) climate. The crops are divided into five categories: cereals, fruits and vegetables, oil crops, pulses and starchy roots. Source: Heikonen et al. (2025)

Dr Dale Rankine is an applied climate scientist at the University of the West Indies. The expert, not involved in the study, tells Carbon Brief that the wide range of crops analysed in the research is “commendable” and that the findings are largely in line with previous work.

Dr José Clavijo Michelangeli, chief product officer at Praedictus Climate Solutions, an agricultural data and forecasting company, notes that most studies on agriculture and climate change only focus on the impacts to main staple crops, such as maize, wheat, rice and soya beans. Clavijo Michelangeli, who was also not involved in the study, tells Carbon Brief:

“Studies expanding to other crops are essential to understand the full impact of climate change on agriculture and it is exciting to see more work in this space.”

He points out that although the findings are consistent with previous understanding of the impacts of climate change on cropping systems, the climate data used to define the “safe climatic spaces” may not “align” with the responses to temperature of the crops currently grown there. He tells Carbon Brief:

“This has the potential to over or underestimate the potential change in suitability of the crop in that region.”

Unequal impacts

The study also reveals that climate change impacts on crop production and diversity will vary across regions.

Regions near the equator, such as sub-Saharan Africa and south Asia, would see the greatest declines in potential crop diversity – decreasing “on more than 70% of the cropland area if global warming exceeds 2C”, according to the study.

By contrast, global warming could increase the diversity of crops in other regions – such as North America, Europe, central Asia and Latin America. In these regions, crop diversity would increase – or see no change – on more than half of the cropland area under warming levels of up to 3C, the study says.

The map below shows the potential changes in crop diversity at 2C of warming. The inset charts show crop-diversity changes divided by regions and global warming levels, with the x-axis of the charts representing the four warming scenarios. Areas in brown represent places where crop diversity is projected to decrease, while those in blue are areas where crop diversity is projected to increase.

World map showing the percentage changes in potential crop diversity under 2C of warming
The percentage changes in potential crop diversity under 2C of warming, with blue (brown) colours showing increases (decreases) in future crop diversity. The inset maps show crop diversity changes by regions and global warming levels, from 1.5 to 4C. The y-axes show the percentage of cropland area experiencing a given change. The darker the blue colour, the bigger the increase in crop diversity. Conversely, the darker the brown colour, the bigger the decrease in crop diversity. Source: Heikonen et al. (2025)

Adaptation opportunity

For areas that could see an increase in crop diversity, this creates “opportunities for climate change adaptation”, the authors say.

Clavijo Michelangeli says that the overall pattern of where the highest or lowest risks lie is in line with prior research. He adds:

“It is very likely that warming temperatures will not only increase diversification – which is in fact already happening – but also productivity of higher-latitude systems.

“The work is also very important in continuing to emphasise the need to do more research in tropical systems.”

Rankine warns that the benefits of increased crop production in temperate climates should not come at the expense of working to adapt agriculture in tropical climates. He argues that if future production centers on temperate countries, it could result in “a disinterest in tropical crops”.

He tells Carbon Brief that an uptick of extreme events in temperate areas in the future could endanger global food security:

“If [temperate regions] become the hub for food production, this could lead to global food shortages…This would amount to maladaptation, the opposite of diversity.” 

The study calls to limit global warming to 2C “to avoid detrimental impacts on food production”, especially in the tropics, where many of the world’s most-vulnerable nations are located.

Sara Heikonen, the study’s lead author and a doctoral researcher at Finland’s Aalto University, says that any negative effect on agriculture in these regions would impact global food networks. Therefore, she says, “international collaboration and support for countries that need help with adaptation” will be critical for “developing new agricultural practices to adapt to these difficult conditions”.

The post Half of global croplands could see a drop in suitable crops at 2C of warming appeared first on Carbon Brief.

Half of global croplands could see a drop in suitable crops at 2C of warming

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For proof of the energy transition’s resilience, look at what it’s up against

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Al-Karim Govindji is the global head of public affairs for energy systems at DNV, an independent assurance and risk management provider, operating in more than 100 countries.

Optimism that this year may be less eventful than those that have preceded it have already been dealt a big blow – and we’re just weeks into 2026. Events in Venezuela, protests in Iran and a potential diplomatic crisis over Greenland all spell a continuation of the unpredictability that has now become the norm.

As is so often the case, it is impossible to separate energy and the industry that provides it from the geopolitical incidents shaping the future. Increasingly we hear the phrase ‘the past is a foreign country’, but for those working in oil and gas, offshore wind, and everything in between, this sentiment rings truer every day. More than 10 years on from the signing of the Paris Agreement, the sector and the world around it is unrecognisable.

The decade has, to date, been defined by a gritty reality – geopolitical friction, trade barriers and shifting domestic priorities – and amidst policy reversals in major economies, it is tempting to conclude that the transition is stalling.

Truth, however, is so often found in the numbers – and DNV’s Energy Transition Outlook 2025 should act as a tonic for those feeling downhearted about the state of play.

While the transition is becoming more fragmented and slower than required, it is being propelled by a new, powerful logic found at the intersection between national energy security and unbeatable renewable economics.

A diverging global trajectory

The transition is no longer a single, uniform movement; rather, we are seeing a widening “execution gap” between mature technologies and those still finding their feet. Driven by China’s massive industrial scaling, solar PV, onshore wind and battery storage have reached a price point where they are virtually unstoppable.

These variable renewables are projected to account for 32% of global power by 2030, surging to over half of the world’s electricity by 2040. This shift signals the end of coal and gas dominance, with the fossil fuel share of the power sector expected to collapse from 59% today to just 4% by 2060.

    Conversely, technologies that require heavy subsidies or consistent long-term policy, the likes of hydrogen derivatives (ammonia and methanol), floating wind and carbon capture, are struggling to gain traction.

    Our forecast for hydrogen’s share in the 2050 energy mix has been downgraded from 4.8% to 3.5% over the last three years, as large-scale commercialisation for these “hard-to-abate” solutions is pushed back into the 2040s.

    Regional friction and the security paradigm

    Policy volatility remains a significant risk to transition timelines across the globe, most notably in North America. Recently we have seen the US pivot its policy to favour fossil fuel promotion, something that is only likely to increase under the current administration.

    Invariably this creates measurable drag, with our research suggesting the region will emit 500-1,000 Mt more CO₂ annually through 2050 than previously projected.

    China, conversely, continues to shatter energy transition records, installing over half of the world’s solar and 60% of its wind capacity.

    In Europe and Asia, energy policy is increasingly viewed through the lens of sovereignty; renewables are no longer just ‘green’, they are ‘domestic’, ‘indigenous’, ‘homegrown’. They offer a way to reduce reliance on volatile international fuel markets and protect industrial competitiveness.

    Grids and the AI variable

    As we move toward a future where electricity’s share of energy demand doubles to 43% by 2060, we are hitting a physical wall, namely the power grid.

    In Europe, this ‘gridlock’ is already a much-discussed issue and without faster infrastructure expansion, wind and solar deployment will be constrained by 8% and 16% respectively by 2035.

    Comment: To break its coal habit, China should look to California’s progress on batteries

    This pressure is compounded by the rise of Artificial Intelligence (AI). While AI will represent only 3% of global electricity use by 2040, its concentration in North American data centres means it will consume a staggering 12% of the region’s power demand.

    This localized hunger for power threatens to slow the retirement of fossil fuel plants as utilities struggle to meet surging base-load requirements.

    The offshore resurgence

    Despite recent headlines regarding supply chain inflation and project cancellations, the long-term outlook for offshore energy remains robust.

    We anticipate a strong resurgence post-2030 as costs stabilise and supply chains mature, positioning offshore wind as a central pillar of energy-secure systems.

    Governments defend clean energy transition as US snubs renewables agency

    A new trend is also emerging in behind-the-meter offshore power, where hybrid floating platforms that combine wind and solar will power subsea operations and maritime hubs, effectively bypassing grid bottlenecks while decarbonising oil and gas infrastructure.

    2.2C – a reality check

    Global CO₂ emissions are finally expected to have peaked in 2025, but the descent will be gradual.

    On our current path, the 1.5C carbon budget will be exhausted by 2029, leading the world toward 2.2C of warming by the end of the century.

    Still, the transition is not failing – but it is changing shape, moving away from a policy-led “green dream” toward a market-led “industrial reality”.

    For the ocean and energy sectors, the strategy for the next decade is clear. Scale the technologies that are winning today, aggressively unblock the infrastructure bottlenecks of tomorrow, and plan for a future that will, once again, look wholly different.

    The post For proof of the energy transition’s resilience, look at what it’s up against appeared first on Climate Home News.

    For proof of the energy transition’s resilience, look at what it’s up against

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    Post-COP 30 Modeling Shows World Is Far Off Track for Climate Goals

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    A new MIT Global Change Outlook finds current climate policies and economic indicators put the world on track for dangerous warming.

    After yet another international climate summit ended last fall without binding commitments to phase out fossil fuels, a leading global climate model is offering a stark forecast for the decades ahead.

    Post-COP 30 Modeling Shows World Is Far Off Track for Climate Goals

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    IMO head: Shipping decarbonisation “has started” despite green deal delay

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    The head of the United Nations body governing the global shipping industry has said that greenhouse gases from the global shipping industry will fall, whether or not the sector’s “Net Zero Framework” to cut emissions is adopted in October.

    Arsenio Dominguez, secretary-general of the International Maritime Organization, told a new year’s press conference in London on Friday that, even if governments don’t sign up to the framework later this year as planned, the clean-up of the industry responsible for 3% of global emissions will continue.

    “I reiterate my call to industry that the decarbonisation has started. There’s lots of research and development that is ongoing. There’s new plans on alternative fuels like methanol and ammonia that continue to evolve,” he told journalists.

    He said he has not heard any government dispute a set of decarbonisation goals agreed in 2023. These include targets to reduce emissions 20-30% on 2008 levels by 2030 and then to reach net zero emissions “by or around, i.e. close to 2050”.

      Dominguez said the 2030 emissions reduction target could be reached, although a goal for shipping to use at least 5% clean fuels by 2030 would be difficult to meet because their cost will remain high until at least the 2030s. The goals agreed in 2023 also included cutting emissions by 70-80% by 2040.

      In October 2025, a decision on a proposed framework of practical measures to achieve the goals, which aims to incentivise shipowners to go green by taxing polluting ships and subsidising cleaner ones, was postponed by a year after a narrow vote by governments.

      Ahead of that vote, the US threatened governments and their officials with sanctions, tariffs and visa restrictions – and President Donald Trump called the framework a “Green New Scam Tax on Shipping”.

      Dominguez said at Friday’s press conference that he had not received any official complaints about the US’s behaviour at last October’s meeting but – without naming names – he called on nations to be “more respectful” at the IMO. He added that he did not think the US would leave the IMO, saying Washington had engaged constructively on the organisation’s budget and plans.

      EU urged to clarify ETS position

      The European Union – along with Brazil and Pacific island nations – pushed hard for the framework to be adopted in October. Some developing countries were concerned that the EU would retain its charges for polluting ships under its emissions trading scheme (ETS), even if the Net Zero Framework was passed, leading to ships travelling to and from the EU being charged twice.

      This was an uncertainty that the US and Saudi Arabia exploited at the meeting to try and win over wavering developing countries. Most African, Asian and Caribbean nations voted for a delay.

      On Friday, Dominguez called on the EU “to clarify their position on the review of the ETS, in order that as we move forward, we actually don’t have two systems that are going to be basically looking for the same the same goal, the same objective.”

      He said he would continue to speak to EU member states, “to maintain the conversations in here, rather than move forward into fragmentation, because that will have a very detrimental effect in shipping”. “That would really create difficulties for operators, that would increase the cost, and everybody’s going to suffer from it,” he added.

      The IMO’s marine environment protection committee, in which governments discuss climate strategy, will meet in April although the Net Zero Framework is not scheduled to be officially discussed until October.

      The post IMO head: Shipping decarbonisation “has started” despite green deal delay appeared first on Climate Home News.

      IMO head: Shipping decarbonisation “has started” despite green deal delay

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