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DOE 2000. - Waste Isolation Pilot Plant - U.S. Department of Energy

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WIPP RH PSAR <strong>DOE</strong>/WIPP-03-3174 CHAPTER 2<br />

Table 2.4-3<br />

Seasonal Frequencies <strong>of</strong> Inversions*<br />

Season<br />

Inversion frequency<br />

(% <strong>of</strong> total hours) Maximum %**<br />

Spring 32 65<br />

Summer 25 68<br />

Fall 35 72<br />

Winter 46 78<br />

Annual 35 70<br />

*C. R. Hosler, "Low-Level Inversion Frequency in the Contiguous United States," Monthly Weather<br />

Review, 89 (9) (1961).<br />

**Frequency <strong>of</strong> 24-hour periods with at least 1 hour <strong>of</strong> inversion based at or below 500 feet.<br />

2.4-23 January 24, 2003

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