Description: | It appears that the pressure sensor was jarred during launch and jumped readings from
975.4 hPa at the surface to 950.2 hPa at the first sample after launch. This results in
erroneous altitude values throughout the sounding and erroneous ascent rate values during the
first 30 seconds. The relative altitude calculations after the second sample should be
correct. Although the surface wind speed was recorded at 10.3 m/s, the next wind value is
reported as 18.2 m/s - quite strong. The bouncing of the balloon during the launch
might account for the abnormal jarring of the sonde. |