High-frequency, hourly, and daily measurements from Lake Vanda Meteorological Station (VAAM), McMurdo Dry Valleys, Antarctica (1994-2024, ongoing)

As part of the McMurdo Dry Valleys Long-Term Ecological Research program, a spatially distributed, long-term climate monitoring network was established across the McMurdo Dry Valleys region of Antarctica, consisting of fourteen research-grade weather stations that continuously measure a standard suite of environmental parameters. Ecosystem processes in this region are strongly regulated by climatic drivers that exhibit high variability across both time and space, making accurate measurement of environmental variables at high temporal and spatial resolution essential to understanding the biophysical dynamics of this polar desert ecosystem. This data package includes measurements from the Lake Vanda Meteorological Station (VAAM), which was established in 1994 on the eastern shore of Lake Vanda in Wright Valley, McMurdo Dry Valleys, Antarctica. Parameters include air temperature, relative humidity, photosynthetically active radiation, incoming and outgoing shortwave radiation, wind speed and direction, surface distance, as well as soil bulk electrical conductivity, dielectric permittivity, temperature, and volumetric water content. Data are provided at high frequency (typically 15-minute intervals), along with hourly and daily summaries. Users should note that summary statistics may be affected by periods of missing data. Since there is no universally accepted standard for handling gaps in time-series data, users are encouraged to work with the high-frequency data and establish their own criteria for acceptable data completeness to minimize any potential bias.

作为麦克默多干谷长期生态研究计划（McMurdo Dry Valleys Long-Term Ecological Research program）的组成部分，研究团队在南极洲麦克默多干谷区域搭建了一套空间分布式长期气候监测网络，该网络包含14台科研级气象站，可持续采集一套标准环境参数。该区域的生态过程受气候驱动因子强烈调控，而这些驱动因子在时间与空间维度均呈现极高变异性，因此以高时空分辨率精准测定环境变量，是理解这片极地荒漠生态系统生物物理动态的必要前提。本数据集包含范达湖气象站（Lake Vanda Meteorological Station，缩写VAAM）的观测数据，该站于1994年设立于南极洲麦克默多干谷赖特谷范达湖东岸。观测参数涵盖气温、相对湿度、光合有效辐射、入射与出射短波辐射、风速与风向、地表距离，以及土壤体积电导率、介电常数、土壤温度与体积含水量。数据集提供高频采样数据（通常为15分钟间隔），同时附带小时级与日级汇总数据。请注意，汇总统计结果可能受数据缺失时段的影响。由于目前尚无针对时间序列数据缺失处理的通用公认标准，建议用户优先使用高频原始数据，并自行设定可接受的数据完整性阈值，以尽可能降低潜在的统计偏差。