A photoelectric detector for the measurement of photolysis frequencies of ozone and other atmospheric molecules |
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| Authors: | Wolfgang Junkermann Ulrich Platt Andreas Volz-Thomas |
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| Institution: | (1) Kernforschungsanlage Jülich, Institut für Chemie 3, F.R. Germany;(2) Present address: Fraunhofer-Institut für Atmosphärische Umweltforschung, Kreuzeckbahnstr. 19, 8100 Garmisch-Partenkirchen, F.R. Germany;(3) Present address: Inst. f. Umweltphysik, Univ. Heidelberg, Im Neuenheimer Feld 366, 69 Heidelberg, F.R. Germany;(4) Institut für Chemie 2, Kernforschungsanlage Jülich, F.R. Germany |
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| Abstract: | Photoelectric detectors for the measurement of photolysis frequencies of different trace gases in the atmosphere are described. They exhibit uniform response characteristics over one hemisphere (2 sr) and wavelength characteristics closely matched to those of the photolysis frequencies J
O1D, J
NO2, and J
NO3, respectively. Absolute calibration of the J
O1D detector was performed by chemical actinometry with an accuracy of ±16 percent. Simultaneous measurements of J
NO2 and J
O1D are presented. |
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| Keywords: | Atmosphere photolysis ozone nitrogen dioxide |
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