North Temperate Lakes LTER: High Frequency Water Temperature Data - Crystal Bog Buoy 2005 - current

The instrumented buoy on Crystal Bog is equipped with a thermistor chain that measures
water temperature from depths ranging from the surface to 2.25m placed every 0.25m
throughout the water column. The Crsytal Bog buoy is also equipped with a dissolved oxygen
sensor and meteorological sensors that provide fundamental information on lake thermal
structure, weather conditions, and lake metabolism. Data are usually collected every 10
minutes with occasional periods of 2 minute data for short periods to answer specific
questions. After correcting for flux to or from the atmosphere and vertical mixing within
the water column, high frequency measurements of dissolved gases such as carbon dioxide and
oxygen can be used to estimate gross primary productivity, respiration, and net ecosystem
productivity, the basic components of whole lake metabolism. Sampling Frequency: varies for
instantaneous sample. averaged to hourly and daily values from one minute samples Number of
sites: 1

水晶沼泽（Crystal Bog）上的智能监测浮标搭载有热敏电阻链（thermistor chain），可沿水面至2.25米深度的整个水柱，以每0.25米的间隔测量水体温度。该浮标还配备了溶解氧传感器（dissolved oxygen sensor）与气象传感器（meteorological sensors），可为湖泊热结构、气象条件及湖泊代谢过程提供基础观测数据。数据采集频率通常为每10分钟一次，偶尔会在短时段内采用2分钟的采样周期以响应特定研究问题。在对大气通量交换与水柱内垂直混合过程进行校正后，二氧化碳、氧气等溶解气体的高频监测数据可用于估算总初级生产力（gross primary productivity）、呼吸作用（respiration）与生态系统净生产力（net ecosystem productivity），这三者是全湖代谢（whole lake metabolism）的核心构成组分。采样频率说明：瞬时采样频率不定，可通过1分钟采样数据平均得到小时值与日值。采样点位数量：1个