What are the chances that the glider will reach 90,000 feet?
The atmospheric requirements necessary for the pilots penetrate the troposphere and get into the stratosphere are quite unique. • Active Polar Vortex • Prefrontal conditions best • Wind direction within 30 of perpendicular to the mountain ridgeline • Subtropical jet located to the north • Strong low-level winds in a stable atmosphere • A gradual increase in wind with altitude (energy) • A weak tropopause that will allow the wave to traverse into the stratosphere • Ridgetop winds at 20 knots minimum • As our expedition is planned to cover two months and if we average about one frontal passage every 4 days, that gives us up to fifteen chances for prefrontal wave conditions.
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