scholarly journals Climate, Santa Ana Winds and autumn wildfires in southern California

Eos ◽  
2004 ◽  
Vol 85 (31) ◽  
pp. 289 ◽  
Author(s):  
Anthony L. Westerling ◽  
Daniel R. Cayan ◽  
Timothy J. Brown ◽  
Beth L. Hall ◽  
Laurence G. Riddle
Keyword(s):  
Southern California ◽  
Santa Ana ◽  
Santa Ana Winds

The Santa Ana Winds of Southern California

Weatherwise ◽  
1962 ◽  
Vol 15 (3) ◽  
pp. 102-121 ◽  
Author(s):  
Leo A. Sergius ◽  
George R. Ellis ◽  
Richard M. Ogden
Keyword(s):  
Southern California ◽  
Santa Ana ◽  
Santa Ana Winds

Analysis of the effects of combustion emissions and Santa Ana winds on ambient ozone during the October 2007 southern California wildfires

2010 ◽  
Vol 44 (5) ◽  
pp. 678-687 ◽  
Author(s):  
Andrzej Bytnerowicz ◽  
Dan Cayan ◽  
Philip Riggan ◽  
Susan Schilling ◽  
Philip Dawson ◽  
...  
Keyword(s):  
Southern California ◽  
Santa Ana ◽  
Ambient Ozone ◽  
Santa Ana Winds ◽  
Combustion Emissions

scholarly journals Diagnosing Santa Ana Winds in Southern California with Synoptic-Scale Analysis

2013 ◽  
Vol 28 (3) ◽  
pp. 704-710 ◽  
Author(s):  
John T. Abatzoglou ◽  
Renaud Barbero ◽  
Nicholas J. Nauslar
Keyword(s):  
Sea Level ◽  
Southern California ◽  
The United States ◽  
Fire Weather ◽  
Synoptic Scale ◽  
Sea Level Pressure ◽  
Mean Sea Level ◽  
Santa Ana ◽  
Level Pressure ◽  
Santa Ana Winds

Abstract Santa Ana winds (SAW) are among the most notorious fire-weather conditions in the United States and are implicated in wildfire and wind hazards in Southern California. This study employs large-scale reanalysis data to diagnose SAW through synoptic-scale dynamic and thermodynamic factors using mean sea level pressure gradient and lower-tropospheric temperature advection, respectively. A two-parameter threshold model of these factors exhibits skill in identifying surface-based characteristics of SAW featuring strong offshore winds and extreme fire weather as viewed through the Fosberg fire weather index across Remote Automated Weather Stations in southwestern California. These results suggest that a strong northeastward gradient in mean sea level pressure aligned with strong cold-air advection in the lower troposphere provide a simple, yet effective, means of diagnosing SAW from synoptic-scale reanalysis. This objective method may be useful for medium- to extended-range forecasting when mesoscale model output may not be available, as well as being readily applied retrospectively to better understand connections between SAW and wildfires in Southern California.

scholarly journals The health burden of fall, winter and spring heatwaves and contribution of Santa Ana Winds in Southern California

2019 ◽  
Vol 3 ◽  
pp. 357
Author(s):  
Schwarz L ◽  
Malig B ◽  
Guzman-Morales J ◽  
Guirguis K ◽  
Gershunov A ◽  
...  
Keyword(s):  
Southern California ◽  
Santa Ana ◽  
Health Burden ◽  
Santa Ana Winds

scholarly journals Santa Ana Winds of Southern California Impact PM 2.5 With and Without Smoke From Wildfires

GeoHealth ◽  
2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Rosana Aguilera ◽  
Alexander Gershunov ◽  
Sindana D. Ilango ◽  
Janin Guzman‐Morales ◽  
Tarik Benmarhnia
Keyword(s):  
Southern California ◽  
Santa Ana ◽  
Pm 2.5 ◽  
Santa Ana Winds

scholarly journals Santa Ana winds and predictors of wildfire progression in southern California

2014 ◽  
Vol 23 (8) ◽  
pp. 1119 ◽  
Author(s):  
Michael Billmire ◽  
Nancy H. F. French ◽  
Tatiana Loboda ◽  
R. Chris Owen ◽  
Marlene Tyner
Keyword(s):  
Wind Speed ◽  
Relative Humidity ◽  
Southern California ◽  
Burned Area ◽  
Strong Positive Correlation ◽  
Fuel Temperature ◽  
Fuel Loading ◽  
Fire Event ◽  
Santa Ana ◽  
Santa Ana Winds

Santa Ana winds have been implicated as a major driver of large wildfires in southern California. While numerous anecdotal reports exist, there is little quantitative analysis in peer-reviewed literature on how this weather phenomenon influences fire progression rates. We analysed fire progression within 158 fire events in southern California as a function of meteorologically defined Santa Ana conditions between 2001 and 2009. Our results show quantitatively that burned area per day is 3.5–4.5 times larger on Santa Ana days than on non-Santa Ana days. Santa Ana definition parameters (relative humidity, wind speed) along with other predictor variables (air temperature, fuel temperature, 10-h fuel moisture, population density, slope, fuel loading, previous-day burn perimeter) were tested individually and in combination for correlation with subsets of daily burned area. Relative humidity had the most consistently strong correlation with burned area per day. Gust and peak wind speed had a strong positive correlation with burned area per day particularly within subsets of burned area representing only the first day of a fire, >500 ha burned areas, and on Santa Ana days. The suite of variables comprising the best-fit generalised linear model for predicting burned area (R2 = 0.41) included relative humidity, peak wind speed, previous-day burn perimeter and two binary indicators for first and last day of a fire event.

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