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Since 2011, routine reconnaissance has been carried out whenever there is a tropical cyclone (TC) entering the Flight Information Region of Hong Kong that may pose a threat to the territory. In October 2022, Typhoon Nesat entered the northern part of the South China Sea and aircraft reconnaissance flights were conducted for the storm. This paper presents these interesting data for the meteorological...
The key meteorological observations of a very late‐season super typhoon over the northern South China Sea, namely, Rai in December 2021, are documented in this article for later reference. In particular, the very valuable dropsonde data in this season are presented. Meteorological data revealed the interaction between the northeast monsoon from the north and the outer circulation of Rai from the south,...
Vertical profiles of tangential and radial wind speeds in Cyclone Mangkhut at 0900–1200 utc 15 September 2018 are shown. Red triangles represent dropsonde locations. Orange solid dots and dashed lines respectively represent observed and simulated tangential wind speed Utan (in ms−1), anti‐clockwise positive. Blue solid dots and dashed lines respectively represent observed and simulated radial wind...
The quality and applications of vertical velocity data from SODAR and radar wind profilers are examined in this paper. The vertical velocity data from collocated SODAR and boundary layer type wind profilers are compared for a period of 7 months. It is found that the two datasets are well correlated, but the slope of the linear fit to the data has a significant deviation from 1. This may be related...
Two typical cases of fog in Hong Kong are documented in this paper. The meteorological conditions leading to the occurrence of fog are examined using observations from ground‐based, remote sensing meteorological instruments. An acoustic sounding system and a microwave radiometer were used to monitor the atmospheric boundary layer and nowcast the low visibility weather conditions. The measurements...
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