day, so it looked like it was going to rain. Of course it doesn't
rain here - as I walked from one building to another, it started
just nicely snowing lightly. After all, it was 1 degree, and
overnight got down to about -4.
My main excitement today was that Andrew, the meteorology guy let me
release the weather balloon at 5.15. It went up to 116,000 feet
before it burst. It carries a radiosonde - an electronic device that
measures altitude, temperature, humidity and its position by GPS and radios them back to base, to be used for weather forecasting.
The second picture shows the tracing of the temperature (red) against the dew point (blue) as the balloon rises, which it does at about 300 metres per minute. The altitude at which the two lines meet corresponds to where the cloud level is, which in this case, is about 200 metres.
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