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Vietnam War: Forest Fire as a Military Weapon - Paperless Archives

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I<br />

SECRET<br />

CLIMATE CL-DRYL<br />

COOL WINTER, DRY YEARLONG<br />

are:<br />

Subtropical. temperate, and continental desert climates - common winter frosts - having 12 "B" months. Examples<br />

Precipitation No. of Months Yearly Humidity Values<br />

Location Pattern "H . D .B" (l)<br />

Puerto Madryn. Argen. Desert 0 12 12 0 -47<br />

Alice Sprs., Aust. Desert 0 12 12 0 -87<br />

L<strong>as</strong> Veg<strong>as</strong>. Nev. Desert 0 12 12 0 -85<br />

El P<strong>as</strong>o, Tex<strong>as</strong> Desert 0 12 12 0 -57<br />

Cipolleti, Argen. Desert 0 12 12 0 -52<br />

(NOTE: DRYL climates with 12 "B" months arc of limited occurrence under colder winters.)<br />

Temperature: Limiting during short winter period.<br />

Precipitation: Extremely restrictive.<br />

Major ve etation types: Open desert shrub stands.<br />

Ground-storyvegetation: Semi-shrubs and gr<strong>as</strong>ses.<br />

Amount: Low dry weight: discontinuous.<br />

Moisture content: Low most of year.<br />

Little layer: Absent.<br />

Total available fuel weight on aood burning day: 0.07 pounds per square foot.<br />

Burn days: Yearlong burn se<strong>as</strong>on except for short rainy periods.<br />

Desiccation needs: Fuel is insufficient for burning.<br />

Example location (L<strong>as</strong> Veg<strong>as</strong>, Nevada, Fig. BI7).<br />

S R<br />

B

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