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 0.5m from the surface through
7m and every 1m from 7m to 15m. In 2007and 2008, the thermistors were placed every 0.5 m
from the surface through 2m and every 1m from 2m to 20m. The Lake Mendota 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
collected every minute. 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. Hourly and
daily water temperature averages are computed from high resolution (1 minute) data. Hourly
and daily values may not be current with high resolution data. In 2006, the instrumented
buoy was deployed in Lake Mendota from June 27 to October 17. In 2007, from May 18 to
October 29. . In 2008, from 26 Jun to 14 Nov. In 2009, the buoy was deployed from April 17
to Nov 23. In 2009, the Mendota buoy was located at 43.0995, -89.4045. (Click for Map)
Sampling Frequency: one minute. Number of sites: 1