Navy bi-plane with meteorograph on starboard wing strut Taking meteorological measurements for pressure, temperature, and humidity Manned flights were inefficient for routine observations as cost high Manned flights grounded during poor weather, thus radiosonde balloons replaced However, such flights paved the way for aircraft weather research projects

Image ID: wea01150, NOAA's National Weather Service (NWS) Collection
Location: Washington, D.C.
Photo Date: December 13, 1934


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