Evaluation of the forward scattering spectrometer probe. II - Corrections for coincidence and dead-time losses
Abstract
Cloud particle concentrations measured by the Forward Scattering Spectrometer Probe (FSSP) can be underestimated when particles are either coincident or pass through the sensing area of the probe during the electronic dead-time. In the absence of any corrections, the differences between actual and measured concentrations can typically exceed 15 percent when aircraft mounted probes measure droplet concentrations more than 500 per cu cm. The sources of counting losses are described and correctional procedures derived and demonstrated.
- Publication:
-
Journal of Atmospheric and Oceanic Technology
- Pub Date:
- December 1985
- DOI:
- 10.1175/1520-0426(1985)002<0626:EOTFSS>2.0.CO;2
- Bibcode:
- 1985JAtOT...2..626B
- Keywords:
-
- Counters;
- Forward Scattering;
- Spectrometers;
- Correction;
- Particle Density (Concentration);
- Probability Density Functions;
- Time Lag