11. Ballast can actually help speed the ascent _ if dropped just below the tropopause . 12. Often this'cap'is the tropopause . 13. Eight kilometers high in the atmosphere near the tropopause , the winds change direction. 14. The boundary between the two, the tropopause , lies at a pressure of. 15. Atop the troposphere is the tropopause , which is the border between the troposphere and stratosphere. 16. Nevertheless, the dynamic tropopause is useless at equatorial latitudes because the isentropes are almost vertical. 17. Smaller-scale explosions penetrating the tropopause generate waves of higher frequency, classified as infrasound. 18. In it temperature decreases with height reaching a minimum of about 36 K at the tropopause . 19. In the standard atmosphere, the Tropopause is the height at which the temperature stops decreasing. 20. The craft was used in a year 2014 " Airborne Tropical Tropopause Experiment ".
