brief communication: synoptic-scale differences between sundowner and santa ana wind regimes in the santa ynez mountains, california

Clicks: 102
ID: 174988
2018
Downslope Sundowner winds in southern California's Santa Ynez Mountains favor wildfire growth. To explore differences between Sundowners and Santa Ana winds (SAWs), we use surface observations from 1979 to 2014 to develop a climatology of extreme Sundowner days. The climatology was compared to an existing SAW index from 1979 to 2012. Sundowner (SAW) occurrence peaks in late spring (winter). SAWs demonstrate amplified 500 hPa geopotential heights over western North America and anomalous positive inland mean sea-level pressures. Sundowner-only conditions display zonal 500 hPa flow and negative inland sea-level pressure anomalies. A low-level northerly coastal jet is present during Sundowners but not SAWs.
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hatchett2018naturalbrief Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;B. J. Hatchett;C. M. Smith;N. J. Nauslar;N. J. Nauslar;M. L. Kaplan
Journal anziam journal
Year 2018
DOI 10.5194/nhess-18-419-2018
URL
https://www.nat-hazards-earth-syst-sci.net/18/419/2018/nhess-18-419-2018.pdf
Keywords
anthropology recreationenvironmental sciencesgeology sanitary engineeringgeography environmental technology

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