The ratio between the sea fog period and the total summer period and ship-bsead observation data

The ratio between the sea fog period and the total summer period (Rsf) We use two methods to judge the sea fog in every year, one is RH (of 1000hPa) > 95% and TD ranging within 0-2 K, the other is CBH and TP to be <100 m and <0.25 mm, respectively, the qualifying times divided by the total time, which is the Rsf-K1 and Rsf-K2 of this data set. The spatial range is 55°S~80°S,-180°~180°,See lat.txt and lon.txt for specific latitude and longitude. We calculated the average annual ratio of sea fog for a total of 41 years (1979~2019). _____ We uploaded ten years of ship-based observations, from the 30th (2013) to the 39th (2023) China Antarctic Research Expedition (CHINARE), have been taken on an ice-breaker and scientific research vessel, “Snow Dragon.”