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Determining the relationship between surface wind speed and the initial elevation angle during radiosonde releases
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    "Radiosonde data have been collected for many years at various National Weather Service upper air sites. With the advent of the Microcomputer Automatic Radio Theodolite system (MicroART; National Weather Service 1990), the process of obtaining upper air data has become less labor intensive and more reliable. MicroART has greatly reduced the possibility for human error during a radiosonde flight. However, there are still a few phases of radiosonde flights that have room for human error. Some of these errors fall into the category of quality control (recognizing and deleting invalid data such as erroneous super-adiabatic lapse rates, or data corrupted by a sensor failure, for example). Another potential source of error is an incorrect estimation of the initial elevation angle during a radiosonde release. If the radiosonde operator does not estimate the initial elvish angle properly, valuable low level wind data will be lost. This paper focuses on this type of human error"--Introduction.
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