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02 septiembre In Agenda, Portafolio cambio climático by Coordinación Editorial

Nature Climate Change September 2020

Volume 10 Issue 9, 1 September 2020

Volume 10 Issue 9

Lowering trade barriers and future hunger

Climate change impacts on agriculture differ between regions, and will increase hunger globally. Writing in this issue of Nature Climate Change, Charlotte Janssens et al. show that reducing tariffs and other barriers to international trade would mitigate this impact; however, trade integration requires a careful approach to avoid reducing domestic food insecurity in food exporting regions.

See Janssens et al. and News & Views…

Image: MHJ / DigitalVision Vectors / Getty. Cover Design: Valentina Monaco

Editorial

    Editorial | 27 August 2020

    In this interconnected world, many of us would regularly jump on a plane, or train, for a weekend away, or into a car to pop to the shops or to visit family and friends. But the way we travel, day-to-day and on longer trips, will need to change if mitigation targets, including net-zero aspirations, are to be met.

Comment

  • Comment | 27 August 2020

    We need a modern-day Marshall Plan to build climate resilience in the developing world. It is doable if, for each dollar spent reaching net zero, we spend an additional 25 cents on building resilience.

    • Tim Palmer

    Comment | 13 July 2020

    Extreme weather damage databases report no significant heatwave impacts in sub-Saharan Africa since 1900, yet the region has experienced a number of heatwaves and will be affected disproportionately by them under climate change. Addressing this reporting discrepancy is crucial to assess the impacts of future extreme heat there.

    • Luke J. Harrington
    •  &Friederike E. L. Otto

Feature

  • Feature | 27 August 2020

    A new star has exploded back onto the climate scene: hydrogen. It offers possibilities to move away from fossil fuels, but it brings its own challenges.

    • Sonja van Renssen

Research Highlights

News & Views

  • News & Views | 20 August 2020

    Gravity-based estimates of mass change have been extended by the recently launched GRACE Follow-On Satellites. The satellite record, combined with regional climate models, reveals that the Greenland Ice Sheet had lower mass loss in 2017–2018, only to return to a record-breaking mass loss in the summer of 2019.

    • Yara Mohajerani

    News & Views | 27 July 2020

    International trade plays an important role in ensuring the resilience of the global food system. Now research suggests a further reduction in trade barriers could alleviate the impacts of climate change on hunger risk.

    • Victor Nechifor
    •  & Emanuele Ferrari

    News & Views | 10 August 2020

    More intense precipitation is an expected consequence of anthropogenic climate change. Now research quantifies the effect of more concentrated rainfall on American agriculture.

    • Ethan E. Butler

    News & Views | 20 July 2020

    Climate change will lead to geographic shifts in global habitats, forcing plant populations to migrate or perish. Model-based analysis for wind-dispersed plants under future climate conditions show the importance of considering both ‘where to go’, in terms of the desired temperature, and ‘how to get there’, in terms of wind speed and direction.

    • Gil Bohrer
    •  & Jelle Treep

Perspectives

  • Perspective | 24 August 2020

    As road transport emissions are set to grow, stronger policy mixes are needed to reach mitigation goals. This Perspective considers the evidence for several policy types—strong regulation, pricing and reduced travel—and the best combination to reduce emissions for passenger and freight vehicles.

    • Jonn Axsen,
    • Patrick Plötz
    • & Michael Wolinetz

Letters

  • Letter | 10 August 2020

    Short-term extreme weather events such as hourly heat can negatively impact crop yields. US maize and soy yields are damaged by rare extreme hourly downpours, but benefit from more common heavy rainfall, indicating yields may benefit from increasing precipitation intensity under climate change.

    • Corey Lesk,
    • Ethan Coffel
    • & Radley Horton

Articles

  • Article | 10 August 2020

    Multilevel network modelling shows that social network exposure promotes both adaptive and transformative responses to climate change among Papua New Guinean islanders. Different social–ecological network structures are associated with adaptation versus transformation.

    • Michele L. Barnes,
    • Peng Wang
    • & Jessica Zamborain-Mason

    • Article | 20 July 2020

    The impacts of climate change on agriculture differ regionally and will increase hunger globally. Reducing tariffs and other barriers to international trade would mitigate this, but trade integration requires a careful approach to avoid reducing domestic food security in food-exporting regions.

    • Charlotte Janssens,
    • Petr Havlík
    • & Miet Maertens

    Article | 27 July 2020

    Carbon dioxide removal (CDR) will be required to achieve 1.5 °C or well below 2 °C climate targets. Analysis of equitable distributions of CDR responsibility shows 2–3 times larger responsibility on large emitters such as the United States, China and the European Union than under a least-cost approach.

    • Claire L. Fyson,
    • Susanne Baur
    • & Carl-Friedrich Schleussner

    Article | 17 August 2020

    Reforestation has been recently identified as a promising climate mitigation option. In Southeast Asia, 120 million ha of land are biophysically suitable for reforestation. However, financial, land-use and operational factors constrain mitigation potential to a fraction of its total possible value.

    • Yiwen Zeng,
    • Tasya Vadya Sarira
    • & Lian Pin Koh

    Article | 03 August 2020

    Warming harms public health in Chinese cities directly via heat and indirectly by worsening air quality. Climate and epidemiological models estimate that reducing aerosols in a warmer climate can enhance atmospheric ventilation, reduce particulate matter exposure and offset warming-driven deaths.

    • Chaopeng Hong,
    • Qiang Zhang
    • & Kebin He

    Article | 13 July 2020

    Short-lived climate forcers (SLCFs) are thought to have short-term impacts relative to CO2. A compact Earth system model estimates SLCFs have caused substantial, long-term impacts via carbon–climate feedbacks since the pre-industrial era but species-dependent impacts of opposite sign largely cancel.

    • Bo Fu,
    • Thomas Gasser
    • & Jing Xu

    Article | 03 August 2020

    Detecting a human role in a given year of extreme glacier mass loss is difficult at regional scales. Event attribution methods estimate that two extreme mass-loss years in the New Zealand Southern Alps, 2011 and 2018, were at least six and ten times more likely with anthropogenic climate warming.

    • Lauren J. Vargo,
    • Brian M. Anderson
    •  & Andrew M. Lorrey

    Article | 13 July 2020

    The rate of warming in many marine ecosystems is faster in winter than in summer. Winter warming will impact fish species’ associations in the Mediterranean more than summer warming, and this has implications for how communities form and for future biodiversity, particularly in heavily fished areas.

    • Nicholas J. Clark,
    • James T. Kerry
    •  & Ceridwen I. Fraser

    Article | 20 July 2020

    Wind patterns could enhance or hinder the ability of organisms reliant on wind-driven dispersal and pollination to shift their ranges under climate change. Organisms in the tropics and on the leeward side of mountains may be particularly at risk due to scarcity of suitable, wind-accessible sites.

    • Matthew M. Kling
    •  & David D. Ackerly

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