Measurements of Fog Water Deposition on the California Central Coast


Fog deposition is a notable component of the water budget of herbaceous-shrub ecosystems on the central and southern coastal regions of California. This paper presents an analysis of fog water deposition rates and meteorological controls in Big Sur, California. Mesh-screen fog collectors were installed the Brazil Ranch weather station sites to measure fog water during the summer seasons of 2010 and 2011. Fog deposition occurred during 73% of days recorded in 2010 and 87% of days recorded in 2011. The daily average deposition rate was 2.29 L/m2 in 2010 and 3.86 L/m2 in 2011. The meteorological variables which had the greatest influence on prediction of fog deposition were wind speed, wind direction, and the dew-point depression (difference between air temperature and dew point). Based on these results, we hypothesize that high rates of summer fog deposition help sustain the productivity of California coastal vegetation through periods of low rainfall.

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C. Hiatt, D. Fernandez and C. Potter, "Measurements of Fog Water Deposition on the California Central Coast," Atmospheric and Climate Sciences, Vol. 2 No. 4, 2012, pp. 525-531. doi: 10.4236/acs.2012.24047.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] J. Azevedo and D. L. Morgan, “Fog Precipitation in Coastal California Forests,” Ecology, Vol. 55, No. 5, 1974, pp. 1135-1141. doi:10.2307/1940364
[2] H. A. Ewing, K. C. Weathers, P. H. Templer, T. E. Dawson, M. K. Firestone, A. M. Elliott and V. K. S. Boukili, “Fog Water and Ecosystem Function: Heterogeneity in a California Redwood Forest,” Ecosystems, Vol. 12, No. 3, 2009, pp. 417-433. doi:10.1007/s10021-009-9232-x
[3] D. T. Fischer, C. J. Still and A. P. Williams, “Significance of Summer Fog and Overcast for Drought Stress and Ecological Functioning of Coastal California Endemic Plant Species,” Journal of Biogeography, Vol. 36, No. 4, 2009, pp. 783-799. doi:10.1111/j.1365-2699.2008.02025.x
[4] T. E. Dawson, “Fog in the California Redwood Forest: Ecosystem Inputs and Use by Plants,” Oecologia, Vol. 117, No. 4, 1998, pp. 476-485. doi:10.1007/s004420050683
[5] S. S. O. Burgess and T. E. Dawson, “The Contribution of Fog to the Water Relations of Sequoia Sempervirens (D. Don): Foliar Uptake and Prevention of Dehydration,” Plant Cell Environment, Vol. 27, No. 8, 2004, pp. 1023-1034. doi:10.1111/j.1365-3040.2004.01207.x
[6] N. L. Ingraham and R. A. Matthews, “The Importance of Fog-Drip Water to Vegetation—Point Reyes Peninsula, California,” Journal of Hydrology, Vol. 164, No. 1-4, 1995, pp. 269-285. doi:10.1016/0022-1694(94)02538-M
[7] J. D. Corbin, M. A. Thomsen, T. E. Dawson and C. M. D’Antonio, “Summer Water Used by California Coastal Prairie Grasses: Fog, Drought, and Community Composition,” Oecologia, Vol. 145, No. 4, 2005, pp. 511-521. doi:10.1007/s00442-005-0152-y
[8] S. Petterssen, “On the Causes and the Forecasting of the California Fog,” Journal of the Aeronautical Sciences, Vol. 3, No. 9, 1936, pp. 305-309.
[9] R. J. Pilie′, E. J. Mack, C. W. Rogers, U. Katz and W. C. Kocmond, “The Formation of Marine Fog and the Development of Fog Stratus Systems along the California Coast,” Journal of Applied Meteorology, Vol. 18, No. 10, 1979, pp. 1275-1286. doi:10.1175/1520-0450(1979)018<1275:TFOMFA>2.0.CO;2
[10] D. Koracin, J. Lewis, W. T. Thompson, C. E. Dorman and J. A. Businger, “Transition of Stratus into Fog along the California Coast: Observations and Modeling,” Journal of Atmospheric Sciences, Vol. 58, No. 13, 2001, pp. 1714-1731. doi:10.1175/1520-0469(2001)058<1714:TOSIFA>2.0.CO;2
[11] D. Stow, Y. Hamada, L. Coulter and Z. Anguelova, “Monitoring Shrubland Habitat Changes through Object-Based Change Identification with Airborne Multispectral Imagery,” Remote Sensing of Environment, Vol. 112, No. 3, 2008, pp. 1051-1061. doi:10.1016/j.rse.2007.07.011
[12] D. F. Leipper, “Fog Forecasting Objectively in the California Coastal Area Using LIBS,” Weather and Forecasting, Vol. 10, No. 4, 1995, pp. 741-762. doi:10.1175/1520-0434(1995)010%3C0689:DCOSTS%3E2.0.CO;2
[13] L. De La Fuente, Y. Delage, S. Desjardins, A. Macafee, G. Pearson and H. Ritchie, “Can Sea Fog be Inferred from Operational GEM Forecast Fields?” Earth and Environmental Science, Vol. 164, 2007, pp. 1303-1325. doi:10.1007/s00024-007-0220-9
[14] W. Grace and P. Ferriere, “Statistical-Empirical Forecasting Guidance for the Occurrence of Fog at Mount Gambier Airport,” Australian Meteorological Magazine, Vol. 50, 2001, pp. 15-27.
[15] L. Caceres, B. Gomez-Silva, X. Garro, V. Rodriguez, V. Monardes and C. P. McKay, “Relative Humidity Patterns and Fog Water Precipitation in the Atacama Desert and Biological Implications,” Journal of Geophysical Research, Vol. 112, No. G4, 2007, 11 pp. doi:10.1029/2006JG000344
[16] P. Henson and D. J. Usner, “The Natural History of Big Sur,” University of California Press, Berkeley and Los Angeles, 1993.
[17] R. S. Schemenauer and P. Cereceda, “A Proposed Standard Fog Collector for Use in High-elevation Regions,” Journal of Applied Meteorology, Vol. 33, No. 11, 1994, pp. 1313-1322. doi:10.1175/1520-0450(1994)033%3C1313:APSFCF%3E2.0.CO;2
[18] M. Kubat, R. Holte and S. Matwin, “Machine Learning for the Detection of Oil Spills in Satellite Radar Images,” Machine Learning, Vol. 30, No. 2-3, 1998, pp. 195-215. doi:10.1023/A:1007452223027
[19] R. S. Schemenauer and P. Cereceda, “Fog-Water Collection in Arid Coastal Locations,” Ambio, Vol. 20, No. 7, 1991, pp. 303-308.
[20] R. E. Newell, “Comments on ‘The Forecasting of Winter Fog: A Geographical Approach’,” Journal of Applied Meteorology, Vol. 3, No. 3, 1964, pp. 342-343. doi:10.1175/1520-0450(1964)003%3C0342:COFOWF%3E2.0.CO;2
[21] J. D. Lundquist and T. B. Bourcy, “California and Oregon humidity and coastal fog,” 14th Conference on Boundary Layers and Turbulence, Colorado, 2000.
[22] J. Oliver, “Fog Water Harvesting along the West Coast of South Africa: A Feasibility Study,” Water SA, Vol. 28, No. 34, 2002, pp. 349-360.
[23] R. S. Schemenaur and P. I. Joe, “The Collection Efficiency of a Massive Fog Collector,” Atmospheric Research, Vol. 24, No. 1-4, 1989, pp. 53-69. doi:10.1016/0169-8095(89)90036-7
[24] NOAA, “1981-2010 Climate Normals, Big Sur Station,”
[25] J. D. Joslin, S. F. Mueller and M. H. Wolfe, “Tests of Models of Cloudwater Deposition to Forest Canopies Using Artificial and Living Collectors,” Atmospheric Environment, Vol. 24A, No. 12, 1990, pp. 3007-3019.

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