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Spatial and Temporal Patterns of Cloud Cover and Fog Inundation in Coastal California: Ecological Implications

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https://ir.library.oregonstate.edu/concern/articles/f4752j543

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Abstract
  • The presence of low-lying stratocumulus clouds and fog has been known to modify biophysical and ecological properties in coastal California where forests are frequently shaded by low-lying clouds or immersed in fog during otherwise warm and dry summer months. Summer fog and stratus can ameliorate summer drought stress and enhance soil water budgets and often have different spatial and temporal patterns. Here, this study uses remote sensing datasets to characterize the spatial and temporal patterns of cloud cover over California’s northern Channel Islands. The authors found marine stratus to be persistent from May to September across the years 2001–12. Stratus clouds were both most frequent and had the greatest spatial extent in July. Clouds typically formed in the evening and dissipated by the following early afternoon. This study presents a novel method to downscale satellite imagery using atmospheric observations and discriminate patterns of fog from those of stratus and help explain patterns of fog deposition previously studied on the islands. The outcomes of this study contribute significantly to the ability to quantify the occurrence of coastal fog at biologically meaningful spatial and temporal scales that can improve the understanding of cloud–ecosystem interactions, species distributions, and coastal ecohydrology.
  • Keywords: Fog, Circulation/dynamics, Atmosphere/ocean structure/phenomena, Remote sensing, Cloud cover, Observational techniques and algorithms, Vegetation, Radiosonde observations, Atmosphere–ocean interaction
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  • Rastogi, B., Williams, A. P., Fischer, D. T., Iacobellis, S. F., McEachern, K., Carvalho, L., ... & Still, C. J. (2016). Spatial and Temporal Patterns of Cloud Cover and Fog Inundation in Coastal California: Ecological Implications. Earth Interactions, 20, 15. doi:10.1175/EI-D-15-0033.1
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  • 20
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  • This work was funded by grants from "Save the Redwoods League" and the USGS awarded to Chris Still (PI).
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