Publication Abstracts

Järvinen et al. 2024

Järvinen, E., B. van Diedenhoven, N. Magee, S. Neshyba, M. Schnaiter, G. Xu, O. Jourdan, D. Delene, F. Waitz, S. Lolli, and S. Kato, 2024: Ice crystal complexity and link to the cirrus cloud radiative effect. In Clouds and Their Climatic Impacts. S.C. Sullivan and C. Hoose, Eds., Geophysical Monograph Series, vol. 271, American Geophysical Union, pp. 47-85, doi:10.1002/9781119700357.ch3.

The aim of this chapter is to present emerging information on ice crystal morphology in the nano- and microscale from various sources, and explore its impact on ice crystal's single-scattering properties and ultimately on cirrus cloud radiative effect. Increasing amount of observations in the last decade have shown that cirrus ice crystals invariably contain some degree of facet roughness, hollowness, or other morphological complexities that make the crystal shape deviate from that of a pristine hexagonal shape. These morphological complexities are found to be present in a wide variety of environmental conditions. A set of physical and statistical complexity parameters is used to quantify ice crystal complexity depending on the application. Although laboratory studies have shown that complexity parameters tend to increase with increasing crystal growth rate, observations in natural cirrus indicate that complexity parameters only weakly vary at cirrus temperatures below 230 K. Morphological complexities affect the optical properties of ice crystals. Implementing the optical properties of complex ice crystals in climate models has shown that the radiative effect of crystal complexity is a cooling of 1?2 Wm ?2 globally. Due to the prevalence of ice crystal morphological complexities and their influence on cirrus radiative properties, the radiative effect of crystal complexity should be taken into account in future climate models. However, work is still needed to transfer the increasing knowledge of the physical nature of ice crystal complexity into optical particle models and eventually into parameterizations used in models.

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BibTeX Citation

  author={Järvinen, E. and van Diedenhoven, B. and Magee, N. and Neshyba, S. and Schnaiter, M. and Xu, G. and Jourdan, O. and Delene, D. and Waitz, F. and Lolli, S. and Kato, S.},
  editor={Sullivan, S. C. and Hoose, C.},
  title={Ice crystal complexity and link to the cirrus cloud radiative effect},
  booktitle={Clouds and Their Climatic Impacts},
  publisher={American Geophysical Union},
  series={Geophysical Monograph Series},

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RIS Citation

ID  - ja06400u
AU  - Järvinen, E.
AU  - van Diedenhoven, B.
AU  - Magee, N.
AU  - Neshyba, S.
AU  - Schnaiter, M.
AU  - Xu, G.
AU  - Jourdan, O.
AU  - Delene, D.
AU  - Waitz, F.
AU  - Lolli, S.
AU  - Kato, S.
ED  - Sullivan, S. C.
ED  - Hoose, C.
PY  - 2024
TI  - Ice crystal complexity and link to the cirrus cloud radiative effect
BT  - Clouds and Their Climatic Impacts
T3  - Geophysical Monograph Series
VL  - 271
SP  - 47
EP  - 85
DO  - 10.1002/9781119700357.ch3
PB  - American Geophysical Union
ER  -

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