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Precipitation Titration: Endpoint Detection Methods

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Related Experiment Video

Updated: Mar 17, 2026

$Measuring Spray Droplet Size from Agricultural Nozzles Using Laser Diffraction$

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Published on: September 16, 2016

Visibility measurements using two-angle forward scattering by liquid droplets.

Peng Peng, Chengwei Li

|July 14, 2016

Summary

This summary is machine-generated.

A new two-angle forward scattering (TAFS) method improves atmospheric visibility detection and weather phenomenon identification. This TAFS instrument offers greater accuracy in rainy conditions compared to multi-angle methods.

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Area of Science:

Atmospheric optics
Meteorological instrumentation

Background:

Accurate measurement of atmospheric visibility is crucial for weather forecasting and aviation.
Existing multi-angle forward scattering (MAFS) methods can distinguish fog, haze, and mist but have limitations.

Purpose of the Study:

To introduce and validate a novel two-angle forward scattering (TAFS) method for enhanced atmospheric visibility detection.
To improve the accuracy of weather phenomenon identification, particularly in rainy conditions.

Main Methods:

Utilized a visibility measuring instrument with two receivers at forward scattering angles of 35° and 90°.
Measured atmospheric visibility using the 35° receiver.
Analyzed the ratio of scattering phase functions P(35°)/P(90°) to determine particle asymmetry and classify weather phenomena.

Main Results:

The TAFS method successfully detects atmospheric visibility and distinguishes between normal weather, rain, fog, haze, and mist.
TAFS demonstrated a reduced visibility error on rainy days compared to MAFS.
The instrument design requires fewer receivers than MAFS.

Conclusions:

The TAFS method provides a more comprehensive approach to identifying various weather phenomena.
TAFS offers improved accuracy and efficiency for atmospheric visibility measurements, especially in adverse weather like rain.