Single-theodolite observation

{
  "id": "MLC-T-MET-008893",
  "term": "Single-theodolite observation",
  "field": "Meteorology and atmospheric science",
  "definition": "A method for determining wind speed and direction in the upper atmosphere by tracking the movement of a pilot balloon from a single ground station. The observer uses a theodolite to measure the balloon's azimuth and elevation angles at regular time intervals as it ascends. Wind velocity is calculated by assuming a constant rate of ascent for the balloon, a factor that introduces potential error compared to multi-station tracking.",
  "see_also": [
    "double-theodolite observation"
  ],
  "url": "https://mlchart.com/terminology/meteorology/single-theodolite-observation/"
}