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  • Analysis of tweets relating to the Conference of the Parties (COP) climate summits reveals greater polarization during COP26 than during previous summits. This increase in polarization is associated with growing right-wing engagement and emerged following the global climate strikes in 2019. Surprisingly, one topic unites pro-climate and climate-sceptic groups — ‘political hypocrisy’ — accusations of which have increased since 2019.

    Research Briefing
  • Investigating the unprecedented 2021 heatwave in the North American Pacific Northwest revealed that a complex interaction between atmospheric dynamics, soil moisture and temperature nonlinearly amplified the event beyond a five-sigma anomaly. These findings may contribute to a better understanding of the physical drivers of future heat extremes.

    Research Briefing
  • The adoption of some climate policies can facilitate the subsequent adoption of other policies, which is referred to as policy sequencing. Across sectors and countries, policy sequences often play an important role in the adoption and stringency of carbon pricing.

    • Manuel Linsenmeier
    • Adil Mohommad
    • Gregor Schwerhoff
    Brief Communication
  • Polarization and the resulting political deadlock have become key barriers to more ambitious climate action. Using Twitter data between Conferences of the Parties, this research identifies a trend of increasing polarization driven by growing right-wing activity alongside accusations of political hypocrisy.

    • Max Falkenberg
    • Alessandro Galeazzi
    • Andrea Baronchelli
    Article Open Access
  • The North American Pacific Northwest experienced an unprecedented heatwave in summer 2021. This study shows that atmospheric circulation features and regional soil dryness both amplified the event’s severity; future warming increases the chance of an equivalent or stronger event.

    • Samuel Bartusek
    • Kai Kornhuber
    • Mingfang Ting
  • Behaviour change is essential for effective solutions to climate threats. Thus, policy-relevant behavioural science studies are needed for a shift towards human-centred climate actions.

  • For effective climate policy, we need both classic and behavioural policies. Green nudges facilitate the effectiveness of a carbon tax by increasing the salience of the tax, harnessing pro-climate concerns, extending the reach of a tax by targeting behaviours directly and, importantly, increasing public acceptance of carbon taxes.

    • Christina Gravert
    • Ganga Shreedhar
  • As regulatory attention on scope 3 emissions mounts, the ‘double-counting’ concern cited by companies can be addressed by allocating shared responsibility across the supply chain. Measurement and data collection present more substantial challenges in reaching an effective allocation.

    • Sanjith Gopalakrishnan
  • Many natural disaster insurance markets were designed under historical distributions of climate risk that differ from those prevailing today. These differences create challenges for natural disaster insurance markets to mitigate the effects of climate change and also increase demand for innovative policy solutions.

    • Katherine R. H. Wagner
  • Under climate change, the mountain snowpack worldwide is being reduced. Now, research warns of a likely transition to low-to-no snowpack in the American Cordillera, with consequences for freshwater availability.

    • Isabel Cristina Hoyos Rincón
    News & Views
  • The degree to which aerosols influence surface temperatures is not well understood. Here, the authors argue that reducing the uncertainties in the climate response to aerosol forcing is one of the key challenges to reduce overall uncertainties of warming projections.

    • Duncan Watson-Parris
    • Christopher J. Smith
    Brief Communication
  • Future changes and regional differences in snowpacks are unclear. Here the American Cordillera mountain range, spanning the Americas, is estimated to lose snow faster in the southern midlatitudes—global warming should be limited to below 2.5 °C to prevent low-to-no-snow conditions across the range.

    • Alan M. Rhoades
    • Benjamin J. Hatchett
    • Andrew D. Jones
    Article Open Access
  • Increasing climate ambition through 2030 will be crucial to limiting global peak temperature changes this century. Countries need to ratchet their 2030 pledges made in Glasgow to reduce temperature overshoot and consequently reduce the risks of irreversible and adverse consequences to natural and human systems.

    • Gokul Iyer
    • Yang Ou
    • Haewon McJeon
    Policy Brief
  • Corporate funding for academia often causes unease about the independence and integrity of such research. Now, a study shows that academia partnerships with the energy sector are more favourably inclined towards fossil fuels than to renewables.

    • Maria Sharmina
    News & Views
  • Many countries have submitted updated and new emissions reduction pledges in COP26, but further ratcheting of pledges is needed to reach the 1.5 °C goal. Ratcheting near-term ambition through 2030 could bring the largest climate benefits and avoid potential long-term temperature overshoot.

    • Gokul Iyer
    • Yang Ou
    • Haewon McJeon
  • The 27th Conference of the Parties (COP27) is being held in November 2022 in Sharm el-Sheikh, Egypt. Having a climate summit hosted in an African country makes it timely to highlight climate change research from the continent. We asked a selection of researchers to share their thoughts on current research questions and how they affect African responses to climate change.

    • Maha Al-Zu’bi
    • Sintayehu W. Dejene
    • N’ Datchoh Evelyne Touré
  • University-based energy centres play an important role in climate discourse but many are funded by fossil fuel businesses. This study shows that fossil-fuel-funded centres express more positive sentiment towards natural gas, compared to renewable energy, than those not funded by the fossil industry.

    • Douglas Almond
    • Xinming Du
    • Anna Papp
  • In this Review, the authors discuss recent advances in understanding dryland productivity and functions, examining outstanding debates on dryland response to change and the uncertainties associated with predicting climate trajectories.

    • Lixin Wang
    • Wenzhe Jiao
    • Paolo D’Odorico
    Review Article