Studies and Developments of the Meteorological Instruments for Cloud Physics and Micrometeorology (II)

New Methods of Measurement for the Larger Cloud Drops

Abstract

New methods of measuring larger cloud drops of diameters exceeding 50 microns are described. The paper consists of two parts. The development of a new instrument, based on the principle of the raindrop sensor, for picking up and counting the larger drops from among all the drops impinging on the sensor is described in Part I. In the second part, the superiority of the photographic emulsion for determining the size spectrum of large drops is described as well as a simple procedure to obtain the permanent records of the size spectrum. Part I New instrument for counting larger cloud drops