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http://dx.doi.org/10.12989/was.2017.24.6.529

The Santa Ana winds of Southern California: Winds, gusts, and the 2007 Witch fire  

Fovell, Robert G. (Department of Atmospheric and Environmental Sciences, University at Albany, State University of New York)
Cao, Yang (Department of Hydrology and Atmospheric Sciences, The University of Arizona)
Publication Information
Wind and Structures / v.24, no.6, 2017 , pp. 529-564 More about this Journal
Abstract
The Santa Ana winds occur in Southern California during the September-May time frame, bringing low humidities across the area and strong winds at favored locations, which include some mountain gaps and on particular slopes. The exceptionally strong event of late October 2007, which sparked and/or spread numerous fires across the region, is compared to more recent events using a numerical model verified against a very dense, limited-area network (mesonet) that has been recently deployed in San Diego County. The focus is placed on the spatial and temporal structure of the winds within the lowest two kilometers above the ground within the mesonet, along with an attempt to gauge winds and gusts occurring during and after the onset of October 2007's Witch fire, which became one of the largest wildfires in California history.
Keywords
complex terrain; downslope winds; numerical weather prediction; gust forecasting;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 Aboshosha, H. and A. El Damatty (2015), "Dynamic response of transmission line conductors under downburst and synoptic winds", Wind Struct., 21(2), 241-272.   DOI
2 Arakawa, A. and Lamb, V. R. (1977), "Computational design of the basic dynamical processes of the UCLA general circulation model", Methods in Computational Physics: Advances in Research and Applications, 17, 173-265.
3 Brasseur, O. (2001), Development and application of a physical approach to estimating wind gusts", Mon. Weather Rev., 129, 5-25.   DOI
4 Cao, Y. (2015), "The Santa Ana winds of Southern California in the context of fire weather", Ph.D. dissertation, University of California, Los Angeles, Los Angeles, California, USA.
5 Cao, Y. and Fovell, R.G. (2013), "Predictability and sensitivity of downslope windstorms in San Diego County", Proceedings of the 15th Conference on Mesoscale Processes, Portland, OR, American Meteorological Society, https://ams.confex.com/ams/15MESO/webprogram/Paper228055.html
6 Cao, Y. and Fovell, R.G. (2016), "Downslope windstorms of San Diego County. Part I: A Case Study", Mon. Weather Rev., 144, 529-552. http://dx.doi.org/10.1175/MWR-D-15-0147.1   DOI
7 Chang, C.H. and Schoenberg, F.P. (2011), "Testing separability in marked multidimensional point processes with covariates", Ann. Inst. Stat. Math., 63, 1103-1122.   DOI
8 Conil, S. and Hall, A. (2006), "Local regimes of atmospheric variability: A case study of Southern California", J. Climate, 19, 4308-4325.   DOI
9 Durran, D. R. (1986), "Another look at downslope windstorms. Part I: The development of analogs to supercritical flow in an infinitely deep, continuously stratified fluid." J. Atmos. Sci., 43, 2527-2543.   DOI
10 Deacon, E. L. (1955), "Gust variation with height up to 150 m", Q. J. Roy. Meteor. Soc., 81, 562-573.   DOI
11 Fovell, R.G. (2012), "Downslope windstorms of San Diego county: Sensitivity to resolution and model physics", Proceedings of the 13th WRF Users Workshop, Boulder, CO, Nat. Center for Atmos. Res. https://www.regonline.com/AttendeeDocuments/1077122/43389114/43389114_1045166.pdf
12 Fovell, R.G. and Cao, Y. (2014), "Wind and gust forecasting in complex terrain", Proceedings of the 15th WRF Users Workshop, Boulder, CO, Nat. Center for Atmos. Res. http://www2.mmm.ucar.edu/wrf/users/workshops/WS2014/extended_abstracts/5a.2.pdf
13 Jones, C., Fujioka, F. and Carvalho, L.M.V. (2010), "Forecast skill of synoptic conditions associated with Santa Ana Winds in Southern California", Mon. Weather Rev., 138, 4528-4541.   DOI
14 Huang, C., Lin, Y.L., Kaplan, M.L. and Charney, J.J. (2009), "Synoptic-scale and mesoscale en-vironments conducive to forest fires during the October 2003 extreme fire event in Southern California", J. Appl. Meteor. Clim., 48, 553-579.   DOI
15 Hughes, M. and Hall, A. (2010), "Local and synoptic mechanisms causing Southern California's Santa Ana winds", Clim. Dynam., 34(6), 847-857.   DOI
16 Jackson, P.L., Mayr, G. and Vosper, S. (2013), Dynamically-driven winds. Mountain Weather Research and Forecasting, (Eds., F.K. Chow, S.F.J.D. Wekker, and B.J. Snyder), Springer-Verlag, 121-218.
17 Pleim, J.E. (2007), "A combined local and non-local closure model for the atmospheric boundary layer. Part I: Model description and testing", J. Appl. Meteor. Clim., 46, 1383-1395.   DOI
18 Lou, W., Wang, J., Chen, Y., Lv, Z. and Lu, M. (2016), "Effect of motion path of downburst on wind-induced conductor swing in transmission line", Wind Struct., 23(3), 211-229.   DOI
19 Mesinger, F., et al. (2006), "North American regional reanalysis", Bull. Am. Meteor. Soc., 87, 343-360.   DOI
20 Monahan, H.H. and Armendariz, M. (1971), "Gust factor variations with height and atmospheric stability", J. Geophys. Res., 76, 5807-5818.   DOI
21 Pleim, J.E. and Xiu, A. (1995), "Development and testing of a surface flux and planetary boundary layer model for application in mesoscale models", J. Appl. Meteor., 34, 16-32.   DOI
22 Raphael, M.N. (2003), "The Santa Ana winds of California", Earth Interact., 7, 1-13.
23 Skamarock, W.C., et al. (2007), "A description of the Advanced Research WRF Version 2", National Center for Atmospheric Research, Tech. Note NCAR/TN-468+STR, 88.
24 Verkaik, J.W. (2000), "Evaluation of two gustiness models for exposure correction calculations", J. Appl. Meteor., 39, 1613-1626.   DOI
25 Small, I.J. (1995), "Santa Ana winds and the fire outbreak of Fall 1993", NOAA Technical Memorandum, National Weather Service Scientific Services Division, Western Region.
26 Smith, C.M. and Skyllingstad, E.D. (2011), "Effects of inversion height and surface heat flux on downslope windstorms", Mon. Weather Rev., 139, 3750-3764.   DOI
27 Sommers, W.T. (1978), "LFM forecast variables related to Santa Ana wind occurrences", Mon. Weather Rev., 132, 1307-1316.
28 Stensrud, D.J. (2007), Parameterization Schemes: Keys to Understanding Numerical Weather Prediction Models. Cambridge University Press, Cambridge, UK.
29 Suomi, I., Vihma, T., Gryning, S.E. and Fortelius, C. (2013), "Wind-gust parametrizations at heights relevant for wind energy: a study based on mast observations", Q. J. Roy. Meteor. Soc., 139, 1298-1310.   DOI
30 Vosper, S.B. (2004), "Inversion effects on mountain lee waves", Q. J. Roy. Meteor. Soc., 130, 1723-1748, doi:10.1256/qj.03.63.   DOI
31 Westerling, A.L., Cayan, D.R., Brown, T.J., Hall, B.L. and Riddle, L.G. (2004), "Climate, Santa Ana winds and autumn wildfires in Southern California", Eos, Trans. Amer. Geophys. Union, 85, 289-296.
32 Wieringa, J. (1976), "An objective exposure correction method for average wind speeds measured at a sheltered location", Q. J. Roy. Meteor. Soc., 102(431), 241-253, doi:10.1002/qj.49710243119.   DOI
33 Xiu, A. and Pleim, J.E. (2001), "Development of a land surface model. Part I: Application in a mesoscale model", J. Appl. Meteor., 40, 192-209.   DOI
34 Yang, F. and Zhang, H.J. (2016), "Two case studies on structural analysis of transmission towers under downburst", Wind Struct., 22(6), 685-701.   DOI