Atmospheric sounding

thumb|Modern radiosondes showing progress of miniaturisationthumb|A Global Positioning System|GPS sonde, approx 220 × 80 ×75 mm (8.7 × 3.1 × 3 in) (with grounding station in the background, used to perform a 'ground check' and also recondition the humidity sensor)

meteorological instrumentation

measurement of vertical distribution of physical properties of the atmospheric column

French climatologist (1855–1913)

German meteorologist/physician (1845–1918)

German scientist (1859–1942)

thumb|Dropsonde delivery system on a NOAA P-3 Hurricane Hunter. A dropsonde is an expendable weather reconnaissance device created by the National Center for Atmospheric Research (NCAR), designed to be dropped from an aircraft at altitude over water to measure (and therefore track) storm conditions as the device falls to the surface. The sonde contains a GPS receiver, along with pressure, temperature, and humidity (PTH) sensors to capture atmospheric profiles and thermodynamic data. It typically relays this data to a computer in the aircraft by radio transmission.

instrument to measure wind speed and direction at various elevations above the ground

American meteorologist (1863-1943)

French author and balloonist

Weather observatory in Milton, United States

atmospheric lapse rate measurement system

group of aircraft maintained by the NOAA