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High temperatures caused by climate change are driving an ongoing drought in the Middle East, according to a new rapid attribution analysis by the World Weather Attribution service.

Large parts of Iraq, Iran and Syria have been gripped by an intense drought for years. Low rainfall and high temperatures have caused crops to fail and driven water shortages across the region, pushing millions of people into food insecurity.

The study finds that, between July 2020 and June 2023, climate change made the drought more intense – mainly due to high temperatures that dried out the soil.

In a world without climate change, the dry period would not have even been severe enough to be called a drought, the study notes.

The authors find that climate change also made the event more likely.

In today’s climate, the drought in Iran was a one-in-five year event. However, without the influence of climate change, it would have been a one-in-80 year event.

Meanwhile, in the Tigris-Euphrates river basin that encompasses much of Iraq and Syria, climate change increased the likelihood of the drought from a one-in-250 to a one-in-10 year event.

The analysis shows that droughts of this intensity are “not rare anymore” due to climate change, one study author told a press briefing.

The study highlights that other factors, including conflict, water management and land degradation have also contributed to the severe impacts of the drought.

The Fertile Crescent

Tucked between the Tigris and Euphrates rivers and the Mediterranean Sea, the Fertile Crescent – named for its rich soils – is often referred to as the “cradle of civilisation”. For thousands of years, this Middle Eastern region has been ideal for agriculture, allowing rural communities to cultivate crops and raise animals.

Today, the area is facing a severe multi-year drought driven by high temperatures and low rainfall. “In an already water-stressed region, agricultural practices consume 80%, on average, of freshwater resources,” Rana El Hajj, a senior technical adviser at the Red Cross Red Crescent Climate Centre and author on the study, told a press briefing.

As the drought has caused crops to fail, tens of millions of people across Iraq, Iran and Syria are facing the combined impacts of water shortages and food insecurity.

In Syria, where around 70% of the wheat crop relies on rainfall, agricultural production was 80% lower in 2022 than it was in 2020.

The resulting spike in food prices has driven millions of people into poverty and hunger. The World Food Programme estimates that 12.1 million Syrians – more than half the population – are facing hunger, while another 2.9 million people are at risk of becoming food insecure.

In Iraq, the 2020-21 rainfall season was the second driest in 40 years, leading to a 29% and 73% drop in water flow in the Tigris and Euphrates rivers, respectively.

In April 2022, the Iraqi ministry of water resources warned that the country’s water reserves had halved since the previous year due to intense heat and low rainfall.

Almost 90% of Iraq’s rain-fed crops – mostly wheat and barley – failed in 2022. One Iraqi farmer called the water shortage a “catastrophic crisis“, explaining that “most of our agricultural lands have been transformed into barren scorching desert lands which lack basic living necessities”.

In Iran, only 180mm of rain fell across the country between September 2021 and September 2022 – a decline of about 24% compared to the long-term average. The drought has led to shortages of drinking water, crop failure and low hydropower output, and many Iranian farmers have been forced to travel to cities to find work.
The low rainfall came as intense heat baked the Middle East. Over the past few years, many regions have faced temperatures above 50C.

Tweet from @extremetemps (Extreme temperatures Around The World). Tweet text: Middle East and Central Asia are under the harshest heat wave in history for this time of the year. In #Iran 51.0C at Omidieh, 50.1C at Abadan, 45.5C at Bam (920m asl). In Turkmenistan 46.7C Uchadzhi, in Uzbekistan 44.7C at Termez, in Tajikistan 43.7C at Isambaj (563m).

Multiyear drought

There are many ways to define drought. Hydrological drought focuses on the amount of rainfall a region receives, while pluvial droughts focus on surface and groundwater flows.

This study investigates agricultural drought, using a measure called the “standardised precipitation evapotranspiration index” (SPEI) – an index used to determine the onset, duration and magnitude of drought conditions in comparison with typical conditions.

Dr Ben Clarke – a researcher at Imperial College London’s Grantham Institute and author on the study – told a press briefing that SPEI gives a measure of available water balance on the land surface.

The study investigates two regions – Iran, and the crescent around the Euphrates and Tigris rivers which encompasses large parts of Iraq and Syria.

The map below shows SPEI in these regions over the 36 months between July 2020 and June 2023. The study regions are outlined in grey, with the Tigris-Euphrates river basin on the left and Iran to the right. The areas of darker shading indicate a more severe drought.

SPEI in the Tigris-Euphrates river basin (left) and Iran (right) between July 2020 and June 2023. Source: WWA (2023)
SPEI in the Tigris-Euphrates river basin (left) and Iran (right) between July 2020 and June 2023. Source: WWA (2023)

Over both regions, 2020-23 was the second worst drought on record, the study finds.

Dr Elham Ghasemifar is a researcher in satellite climatology at Iran’s Tarbiat Modares University and was not involved in the study. He tells Carbon Brief that according to his research, the seasonality of agricultural drought is different across the three countries. Iraq and Iran see the most severe droughts in summer and spring, while Syria sees them in autumn, he says.

Attribution

Attribution is a fast-growing field of climate science that aims to identify the “fingerprint” of climate change on extreme-weather events. In this study, the authors investigate the impact of climate change on drought across Iran, Iraq and Syria.

To put the drought into its historical context and determine how unlikely it was, the authors analysed a timeseries of SPEI for each region. They also use climate models to compare the world as it is today to a “counterfactual” world without human-caused climate change.

The authors find that in today’s climate, which has already warmed by around 1.2C above pre-industrial temperatures due to human-caused climate change, the drought in Iran was a one-in-five year event. Without the influence of climate change, it would have been a one-in-80 year event, they find.

If the planet continues to heat, reaching a warming level of 2C above pre-industrial temperatures, Iran could expect a drought of this severity every other year, the authors add.

The graphic below illustrates these results, where a pink dot indicates the number of years in every 81 that an event like the 2020-23 drought over Iran would be seen at different warming levels.

Expected frequency of drought such as the 2020-23 drought in Iran, at different warming levels. Source: WWA (2023)
Expected frequency of drought such as the 2020-23 drought in Iran, at different warming levels. Source: WWA (2023)

The authors also performed the same analysis for the Tigris-Euphrates river basin in Syria and Iraq. They find that in a pre-industrial climate, today’s climate and a 2C climate, the drought would be expected once every 250, 10 and five years, respectively. These results are shown in the graphic below.

Expected frequency of drought such as the 2020-23 drought in Syria and Iraq, at different warming levels. Source: WWA (2023)
Expected frequency of drought such as the 2020-23 drought in Syria and Iraq, at different warming levels. Source: WWA (2023)

The study shows that droughts such as those recorded in Iran, Iraq and Syria over 2020-23 are “not rare anymore”, Prof Mohammad Rahimi – a professor of climatology at Iran’s Semnan University and author on the study – told a press briefing.

The authors also find that, in both regions, climate change made the drought more intense. Without the influence of climate change, neither event would have even been classified as a drought, the study suggests.

To look more closely at the causes of the drought, the authors also analyse temperature and rainfall trends separately. They find that the change in rainfall was “relatively extreme, but not necessarily affected by climate change”, while the temperatures recorded would have been “virtually impossible” with climate change, Clarke told the press briefing.

This indicates that the drought was caused by “naturally low precipitation coinciding with really, really high temperatures”, Clarke explained.

(These findings are yet to be published in a peer-reviewed journal. However, the methods used in the analysis have been published in previous attribution studies.)

Water insecurity

High temperatures and low rainfall are not the only drivers of water insecurity across Iraq, Iran and Syria. Rajj told the press briefing that other human-caused factors, such as poor water management, land-use change, rapid urbanisation and conflict are also key.

In Syria, more than a decade of war has resulted in underdeveloped irrigation infrastructure, as well as a “devastated economy, damaged infrastructure and increasing poverty”, says the New York Times. Many farmers have also been forced from their lands by shelling, and the the Syrian currency has collapsed to a record low.

Water scarcity is also leading to tension between countries in the Middle East, with many regions building dams or overusing water at the expense of others.

For example, the Tigris and Euphrates rivers are Iraq’s primary sources of water, but both rivers originate in Turkey and flow through Syria first. As Turkey and Syria began developing hydropower projects on the two rivers in the 1970s, water flow to Iraq began to dwindle. Today, dams along the rivers have reduced inflow to Iraq by around 30-40%.

The post Climate change: Intensity of ongoing drought in Syria, Iraq and Iran ‘not rare anymore’ appeared first on Carbon Brief.

Climate change: Intensity of ongoing drought in Syria, Iraq and Iran ‘not rare anymore’

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Big fishing nations secure last-minute seat to write rules on deep sea conservation

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As a treaty to protect the High Seas entered into force this month with backing from more than 80 countries, major fishing nations China, Japan and Brazil secured a last-minute seat at the table to negotiate the procedural rules, funding and other key issues ahead of the treaty’s first COP.

The Biodiversity Beyond National Jurisdiction (BBNJ) pact – known as the High Seas Treaty – was agreed in 2023. It is seen as key to achieving a global goal to protect at least 30% of the planet’s ecosystems by 2030, as it lays the legal foundation for creating international marine protected areas (MPAs) in the deep ocean. The high seas encompass two-thirds of the world’s ocean.

Last September, the treaty reached the key threshold of 60 national ratifications needed for it to enter into force – a number that has kept growing and currently stands at 83. In total, 145 countries have signed the pact, which indicates their intention to ratify it. The treaty formally took effect on January 17.

    “In a world of accelerating crises – climate change, biodiversity loss and pollution – the agreement fills a critical governance gap to secure a resilient and productive ocean for all,” UN Secretary-General António Guterres said in a statement.

    Julio Cordano, Chile’s director of environment, climate change and oceans, said the treaty is “one of the most important victories of our time”. He added that the Nazca and Salas y Gómez ridge – off the coast of South America in the Pacific – could be one of the first intact biodiversity hotspots to gain protection.

    Scientists have warned the ocean is losing its capacity to act as a carbon sink, as emissions and global temperatures rise. Currently, the ocean traps around 90% of the excess planetary heat building up from global warming. Marine protected areas could become a tool to restore “blue carbon sinks”, by boosting carbon absorption in the seafloor and protecting carbon-trapping organisms such as microalgae.

    Last-minute ratifications

    Countries that have ratified the BBNJ will now be bound by some of its rules, including a key provision requiring countries to carry out environmental impact assessments (EIA) for activities that could have an impact on the deep ocean’s biodiversity, such as fisheries.

    Activities that affect the ocean floor, such as deep-sea mining, will still fall under the jurisdiction of the International Seabed Authority (ISA).

    Nations are still negotiating the rules of the BBNJ’s other provisions, including creating new MPAs and sharing genetic resources from biodiversity in the deep ocean. They will meet in one last negotiating session in late March, ahead of the treaty’s first COP (conference of the parties) set to take place in late 2026 or early 2027.

    China and Japan – which are major fishing nations that operate in deep waters – ratified the BBNJ in December 2025, just as the treaty was about to enter into force. Other top fishing nations on the high seas like South Korea and Spain had already ratified the BBNJ last year.

    Power play: Can a defensive Europe stick with decarbonisation in Davos?

    Tom Pickerell, ocean programme director at the World Resources Institute (WRI), said that while the last-minute ratifications from China, Japan and Brazil were not required for the treaty’s entry into force, they were about high-seas players ensuring they have a “seat at the table”.

    “As major fishing nations and geopolitical powers, these countries recognise that upcoming BBNJ COP negotiations will shape rules affecting critical commercial sectors – from shipping and fisheries to biotechnology – and influence how governments engage with the treaty going forward,” Pickerell told Climate Home News.

    Some major Western countries – including the US, Canada, Germany and the UK – have yet to ratify the treaty and unless they do, they will be left out of drafting its procedural rules. A group of 18 environmental groups urged the UK government to ratify it quickly, saying it would be a “failure of leadership” to miss the BBNJ’s first COP.

    Finalising the rules

    Countries will meet from March 23 to April 2 for the treaty’s last “preparatory commission” (PrepCom) session in New York, which is set to draft a proposal for the treaty’s procedural rules, among them on funding processes and where the secretariat will be hosted – with current offers coming from China in the city of Xiamen, Chile’s Valparaiso and Brussels in Belgium.

    Janine Felson, a diplomat from Belize and co-chair of the “PrepCom”, told journalists in an online briefing “we’re now at a critical stage” because, with the treaty having entered into force, the preparatory commission is “pretty much a definitive moment for the agreement”.

    Felson said countries will meet to “tidy up those rules that are necessary for the conference of the parties to convene” and for states to begin implementation. The first COP will adopt the rules of engagement.

    She noted there are “some contentious issues” on whether the BBNJ should follow the structure of other international treaties such as the Convention on Biological Diversity (CBD), as well as differing opinions on how prescriptive its procedures should be.

    “While there is this tension on how far can we be held to precedent, there is also recognition that this BBNJ agreement has quite a bit to contribute in enhancing global ocean governance,” she added.

    The post Big fishing nations secure last-minute seat to write rules on deep sea conservation appeared first on Climate Home News.

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    Climate at Davos: Energy security in the geopolitical driving seat 

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    The annual World Economic Forum got underway on Tuesday in the Swiss ski resort of Davos, providing a snowy stage for government and business leaders to opine on international affairs. With attention focused on the latest crisis – a potential US-European trade war over Greenland – climate change has slid down the agenda.

    Despite this, a number of panels are addressing issues like electric vehicles, energy security and climate science. Keep up with top takeaways from those discussions and other climate news from Davos in our bulletin, which we’ll update throughout the day.

    From oil to electrons – energy security enters a new era

    Energy crises spurred by geopolitical tensions are nothing new – remember the 1970s oil shock spurred by the embargo Arab producers slapped on countries that had supported Israel during the Yom Kippur War, leading to rocketing inflation and huge economic pain.

    But, a Davos panel on energy security heard, the situation has since changed. Oil now accounts for less than 30% of the world’s energy supply, down from more than 50% in 1973. This shift, combined with a supply glut, means oil is taking more of a back seat, according to International Energy Agency boss Fatih Birol.

    Instead, in an “age of electricity” driven by transport and technology, energy diplomacy is more focused on key elements of that supply chain, in the form of critical minerals, natural gas and the security buffer renewables can provide. That requires new thinking, Birol added.

    “Energy and geopolitics were always interwoven but I have never ever seen that the energy security risks are so multiplied,” he said. “Energy security, in my view, should be elevated to the level of national security today.”

    In this context, he noted how many countries are now seeking to generate their own energy as far as possible, including from nuclear and renewables, and when doing energy deals, they are considering not only costs but also whether they can rely on partners in the long-term.

      In the case of Europe – which saw energy prices jump after sanctions on Russian gas imports in the wake of Moscow’s invasion of Ukraine – energy security rooted in homegrown supply is a top priority, European Commission President Ursula von der Leyen said in Davos on Tuesday.

      Outlining the bloc’s “affordable energy action plan” in a keynote speech at the World Economic Forum, she emphasised that Europe is “massively investing in our energy security and independence” with interconnectors and grids based on domestically produced sources of power.

      The EU, she said, is trying to promote nuclear and renewables as much as possible “to bring down prices and cut dependencies; to put an end to price volatility, manipulation and supply shocks,” calling for a faster transition to clean energy.

      “Because homegrown, reliable, resilient and cheaper energy will drive our economic growth and deliver for Europeans and secure our independence,” she added.

      Comment – Power play: Can a defensive Europe stick with decarbonisation in Davos?

      AES boss calls for “more technical talk” on supply chains

      Earlier, the energy security panel tackled the risks related to supply chains for clean energy and electrification, which are being partly fuelled by rising demand from data centres and electric vehicles.

      The minerals and metals that are required for batteries, cables and other components are largely under the control of China, which has invested massively in extracting and processing those materials both at home and overseas. Efforts to boost energy security by breaking dependence on China will continue shaping diplomacy now and in the future, the experts noted.

      Copper – a key raw material for the energy transition – is set for a 70% increase in demand over the next 25 years, said Mike Henry, CEO of mining giant BHP, with remaining deposits now harder to exploit. Prices are on an upward trend, and this offers opportunities for Latin America, a region rich in the metal, he added.

      At ‘Davos of mining’, Saudi Arabia shapes new narrative on minerals

      Andrés Gluski, CEO of AES – which describes itself as “the largest US-based global power company”, generating and selling all kinds of energy to companies – said there is a lack of discussion about supply chains compared with ideological positioning on energy sources.

      Instead he called for “more technical talk” about boosting battery storage to smooth out electricity supply and using existing infrastructure “smarter”. While new nuclear technologies such as small modular reactors are promising, it will be at least a decade before they can be deployed effectively, he noted.

      In the meantime, with electricity demand rising rapidly, the politicisation of the debate around renewables as an energy source “makes no sense whatsoever”, he added.

      The post Climate at Davos: Energy security in the geopolitical driving seat  appeared first on Climate Home News.

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      A Record Wildfire Season Inspires Wyoming to Prepare for an Increasingly Fiery Future

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      As the Cowboy State faces larger and costlier blazes, scientists warn that the flames could make many of its iconic landscapes unrecognizable within decades.

      In six generations, Jake Christian’s family had never seen a fire like the one that blazed toward his ranch near Buffalo, Wyoming, late in the summer of 2024. Its flames towered a dozen feet in the air, consuming grassland at a terrifying speed and jumping a four-lane highway on its race northward.

      A Record Wildfire Season Inspires Wyoming to Prepare for an Increasingly Fiery Future

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