Most recent 40 articles: Nature
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Methane emissions are accelerating climate change — here’s what we can do about it - Nature (Mar 12) |
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Mar 12 · As airborne methane surveys of oil and gas systems continue to discover large emissions that are missing from official estimates1,2,3,4, the true scope of methane emissions from energy production has yet to be quantified. We integrate approximately one million aerial site measurements into regional emissions inventories for six regions in the USA, comprising 52% of onshore oil and 29% of gas production over 15?aerial campaigns. We construct complete emissions distributions for each, employing empirically grounded simulations to estimate small emissions. Total estimated emissions range from 0.75% (95% confidence interval (CI)?0.65%, 0.84%) of covered natural gas production in a ... Read more ...
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Deep-sea hiatus record reveals orbital pacing by 2.4?Myr eccentricity grand cycles - Nature Communications - Nature (Mar 11) |
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Mar 11 · Astronomical forcing of Earth’s climate is embedded in the rhythms of stratigraphic records, most famously as short-period (104–105 year) Milankovitch cycles. Astronomical grand cycles with periods of millions of years also modulate climate variability but have been detected in relatively few proxy records. Here, we apply spectral analysis to a dataset of Cenozoic deep-sea hiatuses to reveal a ~2.4?Myr eccentricity signal, disrupted by episodes of major tectonic forcing. We propose that maxima in the hiatus cycles correspond to orbitally-forced intensification of deep-water circulation and erosive bottom current activity, linked to eccentricity maxima and peaks in insolation and ... Read more ...
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AI Is Taking Water From the Desert - Nature (Feb 19) |
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Feb 19 · Kate Crawford is a professor at the University of Southern California Annenberg, a senior principal researcher at Microsoft Research in New York City and author of the 2021 book Atlas of AI.
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Last month, OpenAI chief executive Sam Altman finally admitted what researchers have been saying for years - that the artificial intelligence (AI) industry is heading for an energy crisis. It’s an unusual admission. At the World Economic Forum’s annual meeting in Davos, Switzerland, Altman warned that the next wave of generative AI systems will consume vastly ... Read more ...
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The climate disaster strikes: what the data say - Nature (Dec 12) |
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Dec 12 · Bianca Nogrady is a freelance science journalist based in Sydney, Australia.
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Workers at the Vikram Solar manufacturing plant at Oragadam in Tamil Nadu, part of India’s push to use solar power.Credit: Arun Sankar/AFP via Getty
When it comes to renewable energy, India is lucky to have an abundance of natural resources. It is the seventh-largest nation on Earth, occupying around 2% of the planet’s land mass, and has a mainland coastline that stretches for 7,500 kilometres. Most regions experience between 250 and 300 sunny days a year and there ... Read more ...
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Risk to rely on soil carbon sequestration to offset global ruminant emissions - Nature Communications - Nature (Nov 21) |
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Nov 21 · Carbon sequestration in grasslands has been proposed as an important means to offset greenhouse gas emissions from ruminant systems. To understand the potential and limitations of this strategy, we need to acknowledge that soil carbon sequestration is a time-limited benefit, and there are intrinsic differences between short- and long-lived greenhouse gases. Here, our analysis shows that one tonne of carbon sequestrated can offset radiative forcing of a continuous emission of 0.99?kg methane or 0.1?kg nitrous oxide per year over 100 years. About 135 gigatonnes of carbon is required to offset the continuous methane and nitrous oxide emissions from ruminant sector worldwide, nearly ... Read more ...
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Reversed asymmetric warming of sub-diurnal temperature over land during recent decades - Nature Communications - Nature (Nov 7) |
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Nov 7 · In the latter half of the twentieth century, a significant climate phenomenon “diurnal asymmetric warming” emerged, wherein global land surface temperatures increased more rapidly during the night than during the day. However, recent episodes of global brightening and regional droughts and heatwaves have brought notable alterations to this asymmetric warming trend. Here, we re-evaluate sub-diurnal temperature patterns, revealing a substantial increase in the warming rates of daily maximum temperatures (Tmax), while daily minimum temperatures have remained relatively stable. This shift has resulted in a reversal of the diurnal warming trend, expanding the diurnal temperature range ... Read more ...
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The Next Six Years Will Make or Break Our Climate Goal of 1.5°C Warming - Nature (Oct 30, 2023) |
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Oct 30, 2023 · The remaining carbon budget (RCB), the net amount of CO2 humans can still emit without exceeding a chosen global warming limit, is often used to evaluate political action against the goals of the Paris Agreement. RCB estimates for 1.5?°C are small, and minor changes in their calculation can therefore result in large relative adjustments. Here we evaluate recent RCB assessments by the IPCC and present more recent data, calculation refinements and robustness checks that increase confidence in them. We conclude that the RCB for a 50% chance of keeping warming to 1.5?°C is around 250?GtCO2 as of January 2023, equal to around six years of current CO2 emissions. For a 50% chance of 2?°C ... Read more ...
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Scientists call out rogue emissions from China at global ozone summit - Nature (Oct 26, 2023) |
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Oct 26, 2023 · You can also search for this author in PubMed Google Scholar
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The manufacturing process for a refrigerant still used in air conditioners in developing countries can release a by-product called HFC-23, which is a powerful greenhouse gas.Credit: Andrew Aitchison/In Pictures via Getty
Efforts to curb emissions of a powerful greenhouse gas commonly produced as a by-product of refrigerant manufacture might be falling short, and it seems eastern China is a major culprit.
The hydrofluorocarbon gas, HFC-23, is around 14,700 times as powerful as carbon dioxide at warming the globe and has long been the subject ... Read more ...
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Russian delegation stymies creation of Antarctic conservation area - Nature (Oct 24, 2023) |
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Oct 24, 2023 · The East Antarctic Ice Sheet (EAIS) has its origins ca. 34 million years ago. Since then, the impact of climate change and past fluctuations in the EAIS margin has been reflected in periods of extensive vs. restricted ice cover and the modification of much of the Antarctic landscape. Resolving processes of landscape evolution is therefore critical for establishing ice sheet history, but it is rare to find unmodified landscapes that record past ice conditions. Here, we discover an extensive relic pre-glacial landscape preserved beneath the central EAIS despite millions of years of ice cover. The landscape was formed by rivers prior to ice sheet build-up but later modified by local ... Read more ...
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Collapse of the West Antarctic ice sheet is 'unavoidable,' study finds - Nature (Oct 23, 2023) |
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Oct 23, 2023 · Ocean-driven melting of floating ice-shelves in the Amundsen Sea is currently the main process controlling Antarctica’s contribution to sea-level rise. Using a regional ocean model, we present a comprehensive suite of future projections of ice-shelf melting in the Amundsen Sea. We find that rapid ocean warming, at approximately triple the historical rate, is likely committed over the twenty-first century, with widespread increases in ice-shelf melting, including in regions crucial for ice-sheet stability. When internal climate variability is considered, there is no significant difference between mid-range emissions scenarios and the most ambitious targets of the Paris Agreement. ... Read more ...
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Overshooting the critical threshold for the Greenland ice sheet - Nature (Oct 18, 2023) |
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Oct 18, 2023 · Melting of the Greenland ice sheet (GrIS) in response to anthropogenic global warming poses a severe threat in terms of global sea-level rise (SLR)1. Modelling and palaeoclimate evidence suggest that rapidly increasing temperatures in the Arctic can trigger positive feedback mechanisms for the GrIS, leading to self-sustained melting2,3,4, and the GrIS has been shown to permit several stable states5. Critical transitions are expected when the global mean temperature (GMT) crosses specific thresholds, with substantial hysteresis between the stable states6. Here we use two independent ice-sheet models to investigate the impact of different overshoot scenarios with varying peak and ... Read more ...
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Temperature extremes of 2022 reduced carbon uptake by forests in Europe - Nature Communications - Nature (Oct 06, 2023) |
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Oct 06, 2023 · The year 2022 saw record breaking temperatures in Europe during both summer and fall. Similar to the recent 2018 drought, close to 30% (3.0 million km2) of the European continent was under severe summer drought. In 2022, the drought was located in central and southeastern Europe, contrasting the Northern-centered 2018 drought. We show, using multiple sets of observations, a reduction of net biospheric carbon uptake in summer (56-62 TgC) over the drought area. Specific sites in France even showed a widespread summertime carbon release by forests, additional to wildfires. Partial compensation (32%) for the decreased carbon uptake due to drought was offered by a warm autumn with ... Read more ...
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Benthic d18O records Earth’s energy imbalance - Nature Geoscience - Nature (Aug 31, 2023) |
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Aug 31, 2023 · Oxygen isotope ratios (d18O) of foraminifera in marine sediment records have fundamentally shaped our understanding of the ice ages and global climate change. Interpretation of these records has, however, been challenging because they reflect contributions from both ocean temperature and ice volume. Here, instead of disentangling, we reconstruct global benthic foraminiferal d18O across the last deglaciation (18–11.5?ka) with ice volume constraints from fossil corals and ocean temperature constraints from ice core noble gases. We demonstrate that, while ocean temperature and ice volume histories are distinct, their summed contributions to d18O agree remarkably well with benthic d18O ... Read more ...
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Carbon offsets aren’t helping the planet — four ways to fix them - Nature (Aug 29, 2023) |
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Aug 29, 2023 · Philip W. Boyd is a professor at the Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia, and at the Climate Recovery Institute.
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Lennart Bach is associate professor at the Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia, and at the Climate Recovery Institute.
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Richard Holden is a professor in the School of Economics, University of New South Wales Business School, Sydney, Australia, and at the Climate Recovery Institute.
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"We are killing this ecosystem": the scientists tracking the Amazon's fading health - Nature (Aug 24, 2023) |
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Aug 24, 2023 · The rainforest is starting to release its carbon.
Is it heading towards a tipping point?
Video by Patrick Vanier/Hilaea Media for Nature
Climate change, deforestation and other human threats are driving the Amazon towards the limits of survival.
The Pulitzer Center in Washington DC supported travel for Daniel Grossman and for photographer Dado Galdieri and videographer Patrick Vanier.
Luciana Gatti stares grimly out of the window of the small aircraft as it takes off from the city of Santarém, Brazil, in the heart of the eastern Amazon forest. Minutes into the flight, the plane passes over a 30-kilometre stretch of near-total ecological devastation. ... | By Daniel Grossman Read more ...
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These veteran female activists are fighting a pivotal climate case with science - Nature (Aug 24, 2023) |
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Aug 24, 2023 · You can also search for this author in PubMed Google Scholar
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The KlimaSeniorinnen climate action group protests outside the European Court of Human Rights.Credit: Jean-Francois Badias/AP via Alamy
“I was always in feminist groups who wanted to keep the Earth clean,” says Rosmarie Wydler-Wälti. Based in Basel, Switzerland, Wydler-Wälti has been an environmental and feminist activist since her youth in the 1970s. Now 73, she is co-president of the Association of Senior Women for Climate Protection (KlimaSeniorinnen) in Switzerland, a group of more than 2,000 older women that has, this year, taken the Swiss ... Read more ...
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Carbon dioxide reduction by photosynthesis undetectable even during phytoplankton blooms in two lakes - Scientific Reports - Nature (Aug 19, 2023) |
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Aug 19, 2023 · Lakes located in the boreal region are generally supersaturated with carbon dioxide (CO2), which emerges from inflowing inorganic carbon from the surrounding watershed and from mineralization of allochthonous organic carbon. While these CO2 sources gained a lot of attention, processes that reduce the amount of CO2 have been less studied. We therefore examined the CO2 reduction capacity during times of phytoplankton blooms. We investigated partial pressure of CO2 (pCO2) in two lakes at times of blooms dominated by the cyanobacterium Gloeotrichia echinulata (Erken, Sweden) or by the nuisance alga Gonyostomum semen (Erssjön, Sweden) during two years. Our results showed that pCO2 and ... Read more ...
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Earth’s hottest month: these charts show what happened in July and what comes next - Nature (Aug 18, 2023) |
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Aug 18, 2023 · You can also search for this author in PubMed Google Scholar
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Intense heatwaves in the US desert southwest have been killing off the iconic saguaro cactus.Credit: Mario Tama/Getty
From wilting saguaros in Arizona and hot-tub-like temperatures off the coast of Florida to increased heat-related hospitalizations in Europe and agricultural losses in China, last month felt unusually hot. It was: several teams have now confirmed that July 2023 was the hottest month in recorded history. And there’s more to come.
July is typically the hottest month of the year, and this July shattered records going back as far ... Read more ...
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Power Line Burial - Nature (Aug 07, 2023) |
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Aug 07, 2023 · Climate-induced extreme weather conditions make electricity infrastructure more vulnerable. They increase the risk of power-line-ignited wildfires which can, in turn, jeopardize electric power delivery. Here, leveraging machine learning, we show that lower-income communities in California not only have lower fractions of power distribution lines undergrounded, but overhead lines and poles in their neighbourhoods are also more vulnerable to wildfires. Should they bear the cost of undergrounding fire-prone lines themselves, they would have to pay a disproportionately higher cost per household. We propose a cost allocation scheme with an income threshold below which the cost is borne ... Read more ...
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Global warming overshoots increase risks of climate tipping cascades in a network model | Nature Climate Change - Nature (Jul 12, 2023) |
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Jul 12, 2023 · Current policies and actions make it very likely, at least temporarily, to overshoot the Paris climate targets of 1.5–<2.0?°C above pre-industrial levels. If this global warming range is exceeded, potential tipping elements such as the Greenland Ice Sheet and Amazon rainforest may be at increasing risk of crossing critical thresholds. This raises the question of how much this risk is amplified by increasing overshoot magnitude and duration. Here we investigate the danger for tipping under a range of temperature overshoot scenarios using a stylized network model of four interacting climate tipping elements. Our model analysis reveals that temporary overshoots can increase tipping ... Read more ...
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Risks of synchronized low yields are underestimated in climate and crop model projections - Nature Communications - Nature (Jul 04, 2023) |
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Jul 04, 2023 · Simultaneous harvest failures across major crop-producing regions are a threat to global food security. Concurrent weather extremes driven by a strongly meandering jet stream could trigger such events, but so far this has not been quantified. Specifically, the ability of state-of-the art crop and climate models to adequately reproduce such high impact events is a crucial component for estimating risks to global food security. Here we find an increased likelihood of concurrent low yields during summers featuring meandering jets in observations and models. While climate models accurately simulate atmospheric patterns, associated surface weather anomalies and negative effects on crop ... Read more ...
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Communicating future sea-level rise uncertainty and ambiguity to assessment users - Nature Climate Change - Nature (Jun 19, 2023) |
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Jun 19, 2023 · Future sea-level change is characterized by both quantifiable and unquantifiable uncertainties. Effective communication of both types of uncertainty is a key challenge in translating sea-level science to inform long-term coastal planning. Scientific assessments play a key role in the translation process and have taken diverse approaches to communicating sea-level projection uncertainty. Here we review how past IPCC and regional assessments have presented sea-level projection uncertainty, how IPCC presentations have been interpreted by regional assessments and how regional assessments and policy guidance simplify projections for practical use. This information influenced the IPCC ... Read more ...
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Compensation for atmospheric appropriation - Nature Sustainability - Nature (Jun 05, 2023) |
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Jun 05, 2023 · Global carbon emissions have continued to rise over the past several decades, and concentrations of atmospheric CO2 have increased dramatically. The 'safe’ planetary boundary for emissions - understood as atmospheric concentration of 350?ppm CO2 - was crossed in 19881. As of 2022, atmospheric concentrations are now 415?ppm (ref. 2), and global temperatures have reached 1.1?°C over preindustrial levels3. The Paris Agreement commits the world’s governments to limiting global temperature rise to 1.5?°C, or well below 2?°C4. The remaining carbon budgets associated with these boundaries are being rapidly depleted, and climate damages are accelerating.
Not all countries are equally ... Read more ...
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Antarctic tipping points: the irreversible changes to come if we fail to keep warming below 2? - Nature (May 25, 2023) |
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May 25, 2023 · Dense water formed near Antarctica, known as Antarctic bottom water (AABW), drives deep ocean circulation and supplies oxygen to the abyssal ocean. Observations show that AABW has freshened and contracted since the 1960s, yet the drivers of these changes and their impact remain uncertain. Here, using observations from the Australian Antarctic Basin, we show that AABW transport reduced by 4.0?Sv between 1994 and 2009, during a period of strong freshening on the continental shelf. An increase in shelf water salinity between 2009 and 2018, previously linked to transient climate variability, drove a partial recovery (2.2?Sv) of AABW transport. Over the full period (1994 to 2017), the ... Read more ...
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Quantifying the human cost of global warming - Nature Sustainability - Nature (May 22, 2023) |
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May 22, 2023 · The costs of climate change are often estimated in monetary terms, but this raises ethical issues. Here we express them in terms of numbers of people left outside the 'human climate niche’ - defined as the historically highly conserved distribution of relative human population density with respect to mean annual temperature. We show that climate change has already put?~9% of people (>600 million) outside this niche. By end-of-century (2080–2100), current policies leading to around 2.7?°C global warming could leave one-third (22–39%) of people outside the niche. Reducing global warming from 2.7 to 1.5?°C results in a?~5-fold decrease in the population exposed to unprecedented heat ... Read more ...
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Trends in the atmospheric jet streams are emerging in observations and could be linked to tropical warming - Communications Earth & Environment - Nature (Apr 19, 2023) |
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Apr 19, 2023 · Climate models predict a weak poleward shift of the jets in response to continuing climate change. Here we revisit observed jet trends using 40 years of satellite-era reanalysis products and find evidence that general poleward shifts are emerging. The significance of these trends is often low and varies between datasets, but the similarity across different seasons and hemispheres is notable. While much recent work has focused on the jet response to amplified Arctic warming, the observed trends are more consistent with the known sensitivity of the circulation to tropical warming. The circulation trends are within the range of historical model simulations but are relatively large ... Read more ...
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Carbon dioxide removal is not a current climate solution – we need to change the narrative - Nature (Apr 04, 2023) |
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Apr 04, 2023 · David T. Ho is a professor of oceanography at the University of Hawaii at Manoa.
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Carbon dioxide removal (CDR) is what puts the 'net’ into 'net zero emissions’. All pathways to limit global warming to 1.5–2?°C above pre-industrial levels that have been assessed by the Intergovernmental Panel on Climate Change require rapid decarbonization to start now. But they also require the removal of CO2 from the atmosphere because we won’t be able to eliminate carbon emissions entirely on the required time scales. 'Hard to abate’ sectors such as aviation and ... Read more ...
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Carbon dioxide removal is not a current climate solution — we need to change the narrative - Nature (Apr 04, 2023) |
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Apr 04, 2023 · David T. Ho is a professor of oceanography at the University of Hawaii at Manoa.
You can also search for this author in PubMed Google Scholar
You have full access to this article via your institution.
Carbon dioxide removal (CDR) is what puts the 'net’ into 'net zero emissions’. All pathways to limit global warming to 1.5–2?°C above pre-industrial levels that have been assessed by the Intergovernmental Panel on Climate Change require rapid decarbonization to start now. But they also require the removal of CO2 from the atmosphere because we won’t be able to eliminate carbon emissions entirely on the required time scales. 'Hard to abate’ sectors such as aviation and ... Read more ...
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Strong climate action is worth it - Nature Climate Change - Nature (Mar 23, 2023) |
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Mar 23, 2023 · Integrated assessment
An immediate and rapid reduction in global emissions is required for many reasons. Integrated research supports the economic case for strong near-term climate action, even before accounting for expected negative impacts on biodiversity, health and tipping points.
Their work calculates the relative benefits and costs of climate mitigation and climate impacts in three integrated assessment models. These models have traditionally focused on mitigation when simulating future climatic and economic trajectories but multi-model studies of the detailed economic impacts along these pathways remain limited. To bridge this gap, the researchers analyse these ... Read more ...
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Scientists discover a new way climate change threatens cold-blooded animals - Nature (Mar 02, 2023) |
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Mar 02, 2023 · Climate warming is expected to increase the energy demands of ectotherms by accelerating their metabolic rates exponentially. However, this prediction ignores environmental complexity such as species interactions. Here, to better understand the metabolic costs of climate change for ectotherms, we reared three Drosophila species in either single-species or two-species cultures at different temperatures and projected adult metabolic responses under an intermediate climate-warming scenario across the global range of Drosophila. We determined that developmental acclimation to warmer temperatures can reduce the energetic cost of climate warming from 39% to ~16% on average by reducing the ... Read more ...
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Future sea-level projections with a coupled atmosphere-ocean-ice-sheet model - Nature Communications - Nature (Feb 14, 2023) |
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Feb 14, 2023 · Climate-forced, offline ice-sheet model simulations have been used extensively in assessing how much ice-sheets can contribute to future global sea-level rise. Typically, these model projections do not account for the two-way interactions between ice-sheets and climate. To quantify the impact of ice-ocean-atmosphere feedbacks, here we conduct greenhouse warming simulations with a coupled global climate-ice-sheet model of intermediate complexity. Following the Shared Socioeconomic Pathway (SSP) 1-1.9, 2-4.5, 5-8.5 emission scenarios, the model simulations ice-sheet contributions to global sea-level rise by 2150 of 0.2?±?0.01, 0.5?±?0.01 and 1.4?±?0.1?m, respectively. Antarctic ... Read more ...
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Don’t wait for COP: the end of the fossil-fuel age must start now - Nature (Jan 11, 2023) |
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Jan 11, 2023 · You have full access to this article via your institution.
A cross-party group of UK parliamentarians wants to end new licences for oil and gas drilling in the country and its waters.Credit: Matthew Lloyd/Bloomberg/Getty
The COP27 United Nations climate conference held in Egypt in November was a mixed bag (Nature 612, 16–17; 2022). Although countries recommitted to the goal of the 2015 Paris climate agreement - to limit global warming to 1.5 °C above pre-industrial temperatures - they made no commitments to phase out fossil fuels. Some even pushed to abandon the 1.5 °C target, saying it is not realistic on the basis of current trends. Thankfully, they were ... Read more ...
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Radical interventions for climate-impacted systems - Nature Climate Change - Nature (Dec 01, 2022) |
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Dec 01, 2022 · Standard solutions to the threat of >1.5?°C global average warming are not ambitious enough to prevent large-scale irreversible loss. Meaningful climate action requires interventions that are preventative, effective and systemic - interventions that are radical rather than conventional. New forms of radical intervention are already emerging, but they risk being waylaid by rhetorical or misleading claims. Here, to encourage a more informed debate, we present a typology of radical intervention based on recent studies of resilience, transition and transformation. The typology, which is intended to be provocative, questions the extent that different interventions can disrupt the ... Read more ...
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Climate change will clearly disrupt El Niño and La Niña this decade – 40 years earlier than we thought - Nature (Nov 15, 2022) |
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Nov 15, 2022 · El Niño-Southern Oscillation (ENSO) features strong warm events in the eastern equatorial Pacific (EP), or mild warm and strong cold events in the central Pacific (CP), with distinct impacts on global climates. Under transient greenhouse warming, models project increased sea surface temperature (SST) variability of both ENSO regimes, but the timing of emergence out of internal variability remains unknown for either regime. Here we find increased EP-ENSO SST variability emerging by around 2030?±?6, more than a decade earlier than that of CP-ENSO, and approximately four decades earlier than that previously suggested without separating the two regimes. The earlier EP-ENSO emergence ... Read more ...
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Global warming puts Arabica coffee at risk, and we're barrelling towards a crucial threshold - Nature (Oct 13, 2022) |
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Oct 13, 2022 · Our understanding of the impact of climate change on global coffee production is largely based on studies focusing on temperature and precipitation, but other climate indicators could trigger critical threshold changes in productivity. Here, using generalized additive models and threshold regression, we investigate temperature, precipitation, soil moisture and vapour pressure deficit (VPD) effects on global Arabica coffee productivity. We show that VPD during fruit development is a key indicator of global coffee productivity, with yield declining rapidly above 0.82?kPa. The risk of exceeding this threshold rises sharply for most countries we assess, if global warming exceeds 2?°C. ... Read more ...
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Pathways towards 90% decarbonization of aviation by 2050 - Nature Climate Change - Nature (Sep 29, 2022) |
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Sep 29, 2022 · Demand for aviation will increase by 2–3-fold by 2050. Nonetheless, 90% decarbonization compared with 2019 can be achieved by continued efficiency gains in aircraft and operations, and by the use of ultra-green fuels derived from biomass or clean electricity. Achieving this decarbonization goal will require an increase in airfares of up to approximately 15%.
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References
Lee, D. S. et al. The ... Read more ...
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Study shows most detailed glimpse yet of Earth's seasonal data from past 11,000 years - Nature (Sep 10, 2022) |
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'Doomsday glacier,' which could raise sea level by several feet, is holding on 'by its fingernails,' scientists say - Nature (Sep 05, 2022) |
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Sep 05, 2022 · Understanding the recent history of Thwaites Glacier, and the processes controlling its ongoing retreat, is key to projecting Antarctic contributions to future sea-level rise. Of particular concern is how the glacier grounding zone might evolve over coming decades where it is stabilized by sea-floor bathymetric highs. Here we use geophysical data from an autonomous underwater vehicle deployed at the Thwaites Glacier ice front, to document the ocean-floor imprint of past retreat from a sea-bed promontory. We show patterns of back-stepping sedimentary ridges formed daily by a mechanism of tidal lifting and settling at the grounding line at a time when Thwaites Glacier was more ... Read more ...
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COP27 will be deadlocked if climate adaptation funding promise is broken - Nature (Aug 30, 2022) |
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Aug 30, 2022 · You have full access to this article via your institution.
Climate adaptation finance is imperative for low- and middle-income countries, such as Pakistan, where floods have displaced millions this week.Credit: Waqar Hussain/EPA-EFE/Shutterstock
The next Conference of the Parties to the United Nations Framework Convention on Climate Change, COP27, is less than three months away. When world leaders meet in Sharm El Sheikh, Egypt, it will be only the fifth time such an event has been held in Africa - a continent already experiencing some of the most severe climate impacts - in three decades of climate diplomacy. But dark clouds are gathering before the meeting, which ... Read more ...
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Up to 90% of marine species could be at high or critical risk if greenhouse gas emissions continue as-is: Study - Nature (Aug 22, 2022) |
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Aug 22, 2022 · Climate change is impacting virtually all marine life. Adaptation strategies will require a robust understanding of the risks to species and ecosystems and how those propagate to human societies. We develop a unified and spatially explicit index to comprehensively evaluate the climate risks to marine life. Under high emissions (SSP5-8.5), almost 90% of ~25,000 species are at high or critical risk, with species at risk across 85% of their native distributions. One tenth of the ocean contains ecosystems where the aggregated climate risk, endemism and extinction threat of their constituent species are high. Climate change poses the greatest risk for exploited species in low-income ... Read more ...
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