2026-03-14T18:58:48Zhttps://pdr.repo.nii.ac.jp/?action=repository_oaipmhoai:pdr.repo.nii.ac.jp:000000802026-01-06T01:33:08Z00029Balloon-borne cryogenic frost point hygrometer observations over Syowa Station, AntarcticaengWater vaporAntarcticStratospherehttp://id.nii.ac.jp/1434/00000062/info:doi/10.20575/00000062Journal ArticleRegular balloon-borne cryogenic frostpoint hygrometer observations were conducted at Syowa Station, Antarctica, from 2013 to 2022 to monitor long-term variations in water vapor concentration in the upper troposphere and lower stratosphere over Antarctica. The data was screened and published in Ascii format for research purposes. This is the only regular balloon-borne hygrometer observation in the Antarctic region and is expected to be used for various purposes, such as climate change monitoring, research on water vapor transport processes, and validation of satellite observations.Polar Data Journal944522025-05National Institute of Polar Research2432-6771https://doi.org/10.17592/001.2024122301publisherhttps://pdr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=80&item_no=1&attribute_id=22&file_no=1CC BYhttps://pdr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=80&item_no=1&attribute_id=22&file_no=2Ⓒ 2025 National Institute of Polar Researchhttps://pdr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=80&item_no=1&attribute_id=22&file_no=3Ⓒ 2025 National Institute of Polar ResearchAtmospheric science/Climatology2025-04-30