North Temperate Lakes LTER: High Frequency Water Temperature Data - Lake Mendota Buoy 2006 - current

The instrumented buoy on Lake Mendota is equipped with a thermistor chain that measures water temperature. In 2006, the thermistors were placed every half-meter from the surface through 7m, and every meter from 7m to 15m. Since 2007, the thermistors were placed every half-meter from the surface through 2m, and every meter from 2m to 20m. The sensor at the water surface is as close to the surface as feasible. A list of sensors used since the first deployment in 2006 is provided as a downloadable CSV file. Hourly and daily water temperature averages are computed from high resolution (1 minute) data.The buoy is removed during the winter when the lake is ice-covered (typically Dec-Apr). Meteorological and limnological data collected at the same buoy site can be found in an ancillary dataset. Sampling Frequency: one minute. Number of sites: 1. Location lat/long: 43.0995, -89.4045 Notes: The thermistor string failed in June 2014, so there is not data between June 17, 2014 and the start of the 2016 season. The thermistor string failed again in August 2023. It was replaced by Hobo temp loggers at 0, 5,10, 15, 20 meters depth for the remainder of 2023.

门多塔湖（Lake Mendota）上的搭载传感器浮标配备了热敏电阻链（thermistor chain），用于测量水体温度。2006年，热敏电阻的布设间距为：水面至7米深度区间每0.5米布设1个，7米至15米深度区间每1米布设1个。2007年起，热敏电阻的布设间距调整为：水面至2米深度区间每0.5米布设1个，2米至20米深度区间每1米布设1个。水面传感器的安装位置尽可能贴近水面。2006年首次部署以来所使用的传感器清单以可下载的CSV文件形式提供。基于1分钟分辨率的原始采样数据，可计算得到逐小时与逐日水温平均值。该浮标会在冬季湖面结冰期间（通常为12月至次年4月）回收。同一浮标站点采集的气象与湖沼学数据可在附属数据集（ancillary dataset）中获取。
采样频率：1分钟。
监测站点数量：1个。
站点经纬度：43.0995, -89.4045
备注：2014年6月热敏电阻链发生故障，因此2014年6月17日至2016年监测季开始前无有效数据。2023年8月，热敏电阻链再次发生故障；2023年剩余时段，该设备被安装于0、5、10、15、20米深度的Hobo温度记录仪（Hobo temp loggers）替代。