On Various Methods of Measuring the Vertical Distribution of Atmospheric Ozone (I)
Optical Type Ozonesonde
1966 Volume 17 Issue 2 Pages 76-96
Details
1966 Volume 17 Issue 2 Pages 76-96
An optical method is described for the measurement of the vertical distribution of atmospheric ozone in the upper atmosphere by means of the sounding balloon.
The determination of the amount of ozone in the air above the instrument is done by measuring the intensities of two beams of the sunlight and calculating their ratio in intensity: one corresponds to the light intensity at the wavelength of 3050 Å and the other to that at the wavelength of 3400 Å. The half-width of each spectrum is about 270 Å and 120 Å respectively.
The essential part of the instrument consists of a light collector, optical filters, a photocell, an a, c. amplifier with a chopping circuit and a telemetering system. The measured values corresponding to each spectrum are sent to the ground stations together with the other meteorological elements such as air temperature and pressure by use of the so-called audio-frequency type transmitter.
Two examples of flight results are presented and discussed.
