Studies on the Fluctuations of Limnological Conditions in Lake Yogo (II)
Monthly Variations of Heat Budget
1978 Volume 39 Issue 1 Pages 37-43
Details
1978 Volume 39 Issue 1 Pages 37-43
The heat budget at Lake Yogo was studied using the daily averaged values of wind speed, vapour pressure, air temperature and surface water temperature observed at Lake Yogo from August 1969 to January 1970. The monthly averaged values of latent heat, QE, transferred from the lake to the atmosphere were large in August-November and those of sensible heat, QH, were large in October-November. Adopting the constant value 1.1×10-3 as the bulk transfer coefficients CE and CH for evaporation and sensible heat, the estimated values of the absorbed net radiative energy, QR, were found to be considerably smaller than the observed values of QR. When these bulk transfer coefficients are changed as wind speed and temperature difference between surface water temperature and air temperature according to KONDO (1975), the estimated values of QR are found to be in satisfactory agreement with the observed values.
