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How Are Mixed-Phase Clouds Mixed?
Alexei Korolev1, Jason Milbrandt1
1Environment and Climate Change Canada Atmospheric Science and Technology Directorate Toronto ON Canada.
Geophysical Research Letters
|October 17, 2022
Summary
Spatial inhomogeneity in mixed-phase clouds is highly intermittent. Smaller cloud regions occur more frequently, impacting weather and climate models.
Area of Science:
- Atmospheric Science
- Cloud Physics
- Meteorology
Background:
- Mixed-phase clouds significantly influence regional and global precipitation and radiation transfer.
- Understanding their spatial inhomogeneity is crucial for accurate climate and weather modeling.
Purpose of the Study:
- To analyze the spatial inhomogeneity of mixed-phase clouds.
- To investigate the scale-dependent characteristics of cloud phase composition.
Main Methods:
- Utilized an extended dataset from airborne in situ observations.
- Analyzed continuous segments of ice, liquid, and mixed-phase cloud regions.
- Examined spatial scales ranging from 100 meters to 100 kilometers.
Main Results:
- Mixed-phase cloud composition is highly intermittent across various spatial scales.
- The frequency of ice, liquid, and mixed-phase regions increases as spatial scales decrease.
- Spatial scale distributions exhibit clear power-law dependencies.
Conclusions:
- Mixed-phase cloud morphology is characterized by intermittency and scale-dependent properties.
- Findings provide insights for improving subgrid inhomogeneity representation in weather and climate models.
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