Meteorological Data: Balbina R. 15 - 20 July 2013 (5 minute averaged)

As part of a physical limnology experiment in July 2013, an Onset meteorological station was deployed on a floating platform at an offshore site in Balbina Reservoir, Brazil (01°54'38.5'' S; 59°28'08.5'' W) using Onset D-WSET-B to measure wind speed, maximal wind speed, wind direction and standard deviation of wind direction (set to 0), using Onset S-THB-MOO2 to measure air temperature and relative humidity, and an Onset pyranometer to measure downwelling shortwave radiation. The anemometer height was 2.8 m. Downwelling and upwelling longwave radiation were measured at an inshore site (1o 54’ 33.3” S; 59o 27’42.21S W) using a net radiometer (Kipp and Zonen CGR3). These data were corrected for temperature in post-processing based on the mean of the temperature measured by the upwelling and downwelling sensors. Sampling of all sensors was once per second, and 5-minute averages were stored. Attenuation of photosynthetically available radiation was computed following Beer’s Law from irradiance measurements with a Li Cor 2 π quantum sensor. The value was 0.5 m-1.