Three other points of interest may be seen on this barotrace: (1) The two very pronounced step effects found on the rising portion of the flight at about 625 mb and 480 mb correspond to stable layers in the atmosphere as seen from the El Paso radiosonde sounding taken at 0800 MST (Figure 18).
[figure]
Figure 18
(2) The clock of the barograph stopped after being exposed about 10 hours at cold temperature. (3) During the floating period many small oscillations are seen on the pressure record. Neglecting superheat changes, there is no variation in the forces of the balloon system except the constantly decreasing weight of ballast and the monotonic loss of lifting gas, and these oscillations must, therefore, be attributed to some force in the atmosphere.
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