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<br /> Table 1. 2-1 Regression equation for pressure at nodal surface. <br /> r 1 r v-i 2 l2 <br />PVF PNS - 2(PVF - PRC) aD + al I 02H - OH PVF - PRC j + I H ! + V2H I <br />- = l Q2H + QH a2 - I <br /> PVF - PRC PRC V 2 l Vp J a3 -I <br /> ~ Vp j <br /> p -' <br /> r Q2H - ~ I 2 - -r [ V 2H 14 <br /> I v4 <br /> I l H I <br /> + a4 PVF - PRe I + <br /> vp2 J a5 Vp J + a6 -I <br /> Q2H + QH PRC Vp J <br />Pressure terms (PVF, PNS, PVF, PRC) are identified in text. H is the height of the ridge crest above the <br />valley floor, and 2H is the height at which the pressure difference from the valley floor is double the <br />difference from floor to crest. Potential temperatures, Q, are taken at ridge crest and at 2Hi scalar <br />wind speeds (m/s) are taken at valley floor, ridge crest, and at 2H. Q was determined from the intersec- <br />tion of the moist adiabat at the specified level with the 1000 mh. surface. <br />Coefficients: aD al a2 a3 a4 a5 a6 <br />Only four terms 55618 -3171. 3 04455 -.02110 0 0 0 <br />All seven terms 68471 -4817 11568 -.05862 9,782,890 -.00190 00043 <br /> <br />I-' <br />I <br />-...I <br />