This directory contains ASCII text radiosonde launch data files from participating Antarctic research stations/vessels as part of the Year of Polar Prediction-Southern Hemisphere Special Observing Period during the 2018-2019 austral summer.

Data were acquired from the British Antarctic Survey (BAS) REference Antarctic Data for Environmental Research (READER): https://legacy.bas.ac.uk/met/READER/YOPP-SH/

Data were gathered at the following Antarctic research stations/research vessels: Aboa, Alguhas II, Almirante Maximano, Amundsen Scott, Casey, Concordia, Davis, Dome A, Dumont Durville, Ascudero, Fuji, Halley, Jang Bogo, King-Sejong, Macquarie, Marambio, Mario-Zuchelli, Mawson, McMurdo, Mirny, Neumayer, Polarstern, Princess Elizabeth, Rothera, RV Kronprins Haakon, Shirase, Syowa, WAIS, and Zhongshan.

Each file is named {research station}_YYYYMMDDHH.dat, where:

• {research station}: research station from which the weather balloon was launched

• YYYY: year

• MM: month

• DD: day

• HH: hour

Each file contains 8 columns of space-delimited data of the observations:

• Time (UTC)

• Pressure (hPa)

• Height (meters above mean sea level)

• Temperature (C)

• Relative humidity (%)

• Dewpoint (C)

• Wind direction (degrees)

• Wind speed (kts)