An international team of scientists has presented research findings that reveal a crucial role of biological particles, including pollen, spores, and bacteria, in the formation of ice within Arctic clouds. These findings have far-reaching implications for climate science and our understanding of the rapidly changing Arctic climate.
An international team of scientists from Sweden, Norway, Japan, and Switzerland, has presented research findings that reveal a crucial role of biological particles, including pollen, spores, and bacteria, in the formation of ice within Arctic clouds. These findings, published today, have far-reaching implications for climate science and our understanding of the rapidly changing Arctic climate.
Karl Espen Yttri, senior scientist at the Climate and Environmental Research Institute NILU and a co-author of the study, underscored that:"While arabitol and mannitol are present in various microorganisms, their presence in air are related to fungal spores, and might originate both from local sources or from long range atmospheric transport."The quantification of ice nucleating particles and understanding their properties proved to be a cumbersome challenge.
Paul Zieger, Associate Professor at Stockholm University and co-author, emphasized the important implication of these findings for climate science:"This research offers critical insights into the origin and properties of biological and ice nucleating particles in the Arctic that could enable climate model developers to improve the representation of aerosol-cloud interactions in models and reduce uncertainties related to anthropogenic radiative forcing estimates.
Scientists in Japan have used a global climate model to show that dust from land without snow cover in the Arctic is a major source of particles that form ice crystals in Arctic low-level clouds. ...
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