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<p>Ground surface temperature (GST) is an essential boundary condition for permafrost modeling and satellite-product evaluation, yet high-frequency, multi-year GST observations on the Qinghai–Tibet Plateau (QTP) remain sparse, particularly within the interior continuous permafrost zone. Here we present a publicly available dataset of half-hourly GST measured at 24 sites in the Wudaoliang region of the central QTP. The network spans three dominant alpine land-cover types (alpine desert, alpine steppe, and alpine meadow) and elevations of 4,543–4,741 m a.s.l. HOBO temperature loggers were installed at 3–5 cm depth and recorded GST at 30-minute intervals from September 2019 to September 2023. The time series were quality controlled using physical-range screening and change-point checks, and disturbance-affected segments associated with frost-jacking were removed, yielding 1,399,008 valid records. The release includes quality-controlled GST time series, site-level metadata and a traceable exclusion log. This dataset supports reuse for the site- and grid-scale evaluation and calibration of satellite land surface temperature and freeze–thaw products, as well as studies of near-surface ground thermal dynamics in high-elevation permafrost regions.</p>

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Half-hourly ground surface temperature dataset from 24 sites in Wudaoliang, Qinghai–Tibet Plateau, 2019–2023

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月17日

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  • Defu Zou,
  • Tianjie Zhao,
  • Lin Zhao,
  • Zanpin Xing,
  • Xiaofan Zhu,
  • Guojie Hu,
  • Tonghua Wu,
  • Xiaodong Wu,
  • Yifan Wu,
  • Defeng Feng,
  • Jingyao Zheng,
  • Shaojie Du,
  • Zhen Wang,
  • Ning Li,
  • Chi Wang,
  • Jimin Yao,
  • Yao Xiao,
  • Erji Du,
  • Guangyue Liu

摘要

Ground surface temperature (GST) is an essential boundary condition for permafrost modeling and satellite-product evaluation, yet high-frequency, multi-year GST observations on the Qinghai–Tibet Plateau (QTP) remain sparse, particularly within the interior continuous permafrost zone. Here we present a publicly available dataset of half-hourly GST measured at 24 sites in the Wudaoliang region of the central QTP. The network spans three dominant alpine land-cover types (alpine desert, alpine steppe, and alpine meadow) and elevations of 4,543–4,741 m a.s.l. HOBO temperature loggers were installed at 3–5 cm depth and recorded GST at 30-minute intervals from September 2019 to September 2023. The time series were quality controlled using physical-range screening and change-point checks, and disturbance-affected segments associated with frost-jacking were removed, yielding 1,399,008 valid records. The release includes quality-controlled GST time series, site-level metadata and a traceable exclusion log. This dataset supports reuse for the site- and grid-scale evaluation and calibration of satellite land surface temperature and freeze–thaw products, as well as studies of near-surface ground thermal dynamics in high-elevation permafrost regions.