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Showing 1–15 of 15 results
Advanced filters: Author: Nicolas Bellouin Clear advanced filters

  • Wildfires produce aerosols known to impact the climate, but the wider-reaching effects of this biomass burning are poorly constrained in models. Here the authors use a suite of observations from 12 campaigns around the globe to determine that the values used by most climate models overestimate the contribution of biomass burning aerosols.

    • Hunter Brown
    • Xiaohong Liu
    • Duli Chand
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-15

  • Particles of smoke from natural and human-made fires absorb sunlight and contribute to global warming. Laboratory experiments suggest that smoke is often more absorbing than current numerical models of global climate assume.

    • Nicolas Bellouin
    News & Views
    Nature Geoscience
    Volume: 7, P: 619-620

  • This study presents a quantification of the global mean net radiative forcing of contrails in cirrus clouds equal to 5 mW m−2, obtained from matching aircraft positions with spaceborne lidar data. This suggests that such embedded contrails are a non-negligible part of aviation’s impact on climate.

    • Torsten Seelig
    • Kevin Wolf
    • Matthias Tesche
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-8

  • Climate simulations show that interactions between particles of black carbon and convective and cloud processes in the atmosphere must be considered when assessing the full climatic effects of these light-absorbing particulates.

    • Ben Booth
    • Nicolas Bellouin
    News & Views
    Nature
    Volume: 519, P: 167-168

  • Sahelian drought is investigated by analysing de-trended observations between 1900 and 2010, which show that substantial Northern Hemisphere volcanic eruptions preceded three of the four driest summers. Modelling both episodic volcanic eruptions and geoengineering by continuous deliberate stratospheric injection shows that large asymmetric aerosol loadings in the Northern Hemisphere are a precursor of Sahelian drought, whereas if the aerosol loadings are concentrated in the Southern Hemisphere greening of the Sahel is induced.

    • Jim M. Haywood
    • Andy Jones
    • David Stephenson
    Research
    Nature Climate Change
    Volume: 3, P: 660-665

  • More radiation generally increases vegetation photosynthesis, but field studies show that a given amount of diffuse radiation leads to more fixed carbon than direct radiation. Mercado and colleagues simulate the effect of late twentieth century increases in the diffuse radiation fraction, and find that the terrestrial carbon sink is enhanced by about 25% —paradoxically, reducing future anthropogenic pollution will reduce this diffuse radiation effect, creating a positive feedback to global warming.

    • Lina M. Mercado
    • Nicolas Bellouin
    • Peter M. Cox
    Research
    Nature
    Volume: 458, P: 1014-1017

  • Investigations of an Icelandic volcanic eruption confirm that sulfate aerosols caused a discernible yet transient brightening effect, as predicted, but their effect on the liquid water path was unexpectedly negligible.

    • Florent F. Malavelle
    • Jim M. Haywood
    • Thorvaldur Thordarson
    Research
    Nature
    Volume: 546, P: 485-491

  • Satellite data for cloud tracks downwind of major pollution sources show a relatively small global average decrease in cloud water caused by anthropogenic aerosols, invalidating claims that aerosol-induced effects contribute substantially to climate cooling.

    • Velle Toll
    • Matthew Christensen
    • Nicolas Bellouin
    Research
    Nature
    Volume: 572, P: 51-55

  • The war in Ukraine led to detours of commercial air traffic, which increased fuel consumption by 13 percent for the flights impacted and carbon dioxide emissions from aviation by 1 percent globally in 2023, according to an analysis that uses optimization algorithms and data on aircraft movement.

    • Grégoire Dannet
    • Nicolas Bellouin
    • Olivier Boucher
    ResearchOpen Access
    Communications Earth & Environment
    Volume: 6, P: 1-7