《Table 1.List of instruments used.》

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《"Observational Study on the Supercooled Fog Droplet Spectrum Distribution and Icing Accumulation Mechanism in Lushan, Southeast China"》

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The data measured by instruments and used in this study are listed in Table 1.The sensor head of the TPS-3100 hotplate total precipitation sensor has double discs，which provide precipitation rate measurements of rain and snow as part of the automatic weather observation.Its detection range is0–50 mm h-1and the temporal resolution is 1 min.The OWI-430 weather identifier and visibility sensor measures precipitation by detecting the optical irregularity induced by particles falling through a beam of partially coherent infrared light，and it calculates visibility by determining the amount of forward scattered light by particles.Its detection range for visibility is 0.001～10 km.The FM-100 fog droplet spectrometer has been widely used in ice and freezing fog observations（Gultepe et al.，2011，2016）.There is a 10-m tower on the west side of the observatory，and wires were laid on the 10-m tower and on the 1.5-m icing frames under the tower.Icing growth was observed.There were sets of wires in the east–west，north–south，and northeast–southwest directions on the tower.Limited by observation and severe weather conditions，only the ice thickness data of the northeast–southwest wire were used to study the icing accretion on the tower，representing the average icing conditions of the wires（along east–west and north–south）.The icing frame under the tower was laid in accordance with“ground meteorological observation norms”:one group was oriented along the east–west direction，and the other group was oriented along the north–south direction.The wire diameter is 26.8 mm.Ice diameter a（the maximum of accumulated ice on the cut surface perpendicular to the wire，the wire diameter is included）and ice thickness b（the maximum of the accumulated ice perpendicular to the ice diameter on the cut surface of the wire）were measured hourly（China Meteorological Administration，1979）.