![]() The evolution of the DSD and its relation with the vertical development of the reflectivity of two rainband cases are fully illustrated. The drop size distribution (DSD) and drop shape relation (DSR) characteristics that were observed by a ground-based 2D video disdrometer and retrieved from a C-band polarimetric radar in the typhoon systems during landfall in the western Pacific, near northern Taiwan, were analyzed. ![]() The right-hand side y axis represents the scale of rainfall rate and the left-hand side y axis represents the reflectivity (dB Z) and the wind speed (m s −1). The pink line represents the wind speed obtained from the nearby 3D sonic anemometer. (e),(f) The blue and green lines represent the reflectivity (dB Z) calculated from the DSDs and the rainfall rate (mm h −1) calculated from the DSDs. The MP and MD m events are marked by black dashed lines. The y axis indicates the equivolumetric diameter (mm) of raindrops. The color shades represents the DSD in logarithmic units of mm −1 m −3. The weak stratiform, stratiform, and convection systems (classified according to Table 3) are illustrated by the colors pink, blue, and red on the top of the diagram. ![]() (a),(b) The color shaded represents the reflectivity vertical profile observed by RCWF radar. The time series of the DSDs calculated from the NCU 2DVD and the reflectivity vertical profile from the RCWF WSR-88D radar of Typhoon Nari case from 0000 UTC 16 to 1200 UTC.
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