What Role Does Desert Dust Play in Weather and Climate?

Martina Klose · portrait · 1:39

Resources

Video ID

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Video

https://demo.lt.org/videos/portrait/martina-klose/video.mp4

Poster

https://demo.lt.org/videos/portrait/martina-klose/poster.jpg

Subtitles · English

https://demo.lt.org/videos/portrait/martina-klose/en.vtt

Document

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    "title": "What Role Does Desert Dust Play in Weather and Climate?",
    "author": "Martina Klose",
    "description": "Every year billions of tonnes of mineral dust rise from the world's deserts. Martina Klose follows that dust from gusts on a Saharan surface to clouds, radiation, and distant ecosystems. This publication explains how particles too small to see brighten and darken the sky, seed ice in clouds, fertilise oceans, and why dust remains one of the loudest open questions in climate models.",
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            "start": 7.06,
            "text": "Hi, my name is Martina Klose. I am also a meteorologist by training and my expertise is in mineral dust, so soil particles that are entrained by the wind into the atmosphere."
          },
          {
            "start": 18.94,
            "text": "And I'm looking at it using different methods, theoretically using field and lab measurements, and of course a lot of modelling."
          },
          {
            "start": 25,
            "text": "My key interest is to try to understand the processes better in which dust is involved and get them into the model to understand dust impacts and consequences."
          },
          {
            "start": 40.02,
            "text": "My role in nextGEMS is to implement new dust-emission parameterizations in one of the models, the ICON model, so that the calculated dust emissions can benefit from the advanced resolution and the high resolution, and we see more nuanced and detailed dust fields in the model."
          },
          {
            "start": 61.16,
            "text": "Many dust phenomena, dust storms, are very intense, but they're smaller in spatial extent than the usual model grid sizes."
          },
          {
            "start": 69.5,
            "text": "So in the standard or classical model runs, we wouldn't see them."
          },
          {
            "start": 73.96,
            "text": "Now with the higher resolution that we use in nextGEMS, we can actually identify these massive, but still relatively small dust storms, and we're really keen to look into how often they occur, under what conditions, and how much they contribute generally to the aerosol and to climate impacts of dust."
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        "keyTakeaway": "Mineral dust shapes radiation, clouds, and ecosystems, and models still disagree on how much.",
        "summary": "Dust is lifted by turbulent winds, travels continents, and acts on climate from all sides: scattering and absorbing sunlight, nucleating ice in clouds, and delivering nutrients to oceans and forests. Because emission depends on gusts and surface details that models cannot resolve, dust remains a major source of uncertainty in climate simulations."
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            "label": "Dust emission",
            "description": "The lifting of soil particles by wind gusts and turbulence, sensitive to surface details models struggle to capture.",
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            "label": "Aerosol-radiation interaction",
            "description": "How airborne particles scatter and absorb sunlight, cooling or warming depending on their properties.",
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            "label": "Ice nucleation",
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            "title": "Land-atmosphere interaction",
            "description": "How surfaces, soils, and vegetation exchange energy and matter with the atmosphere."
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            "title": "Gust-driven mineral dust emission and its climate impacts",
            "authors": ["Martina Klose"],
            "journal": "Atmospheric Chemistry and Physics",
            "abstract": "Observations and large-eddy simulations constrain gust-driven dust emission and quantify its radiative and cloud-forming effects.",
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            "title": "How Do Warmer Oceans Reshape Tropical Rainfall Extremes?",
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            "url": "https://lt.org/publication/yuting-wu/"
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          {
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            "poster": "https://demo.lt.org/videos/portrait/frank-kuhn/poster.jpg",
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