Publisher's Synopsis
Excerpt from Effect of Marine Air on the Fireclimate in the Mountains of Southern California
During the summer months marine air penetrates into the interior of southern California to a greater or lesser extent depending upon the air flow patterns of the general circulation of the atmosphere. There are seasonal variations in the strength of the marine influence, a maximum in late June and early July and a minimum in August and early September. These variations are also associated with changes in the general circulation, and the poleward contraction and equatorward expansion of the belt of the westerly winds.
The relatively cool, moist marine air tends to reduce forest fire danger by increasing the moisture content of fine fuels. During spells of strong marine influence, called Catalina Eddy circulation, there is a lower incidence of major forest fires in the wildlands of southern California. Further, local circulations within the mountains are upset by the strong inflow of marine air. The diurnal mountain-valley wind system is replaced by winds blowing day and night from.the lowlands to.the highlands.
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