This paper by Junseki Kondo, published in 1975, estimates the bulk transfer coefficients of the sea surface for sensible heat and water vapor under diabatic conditions. Using recent data on the roughness Reynolds number of the sea surface and the Owen-Thomson theory, Kondo finds that for a reference height of 10 meters, the neutral-lapse transfer coefficient for water vapor is only slightly higher than that for sensible heat. When the wind speed at 10 meters is greater than 3 m/s, the coefficient for sensible heat (C_H) is about 10% higher than that for momentum (C_D). However, for wind speeds below 5 m/s, C_D exceeds C_H, and at 15 m/s, C_H is approximately 0.8 times C_D. Kondo also proposes empirical relationships for the bulk transfer coefficients over a range of wind speeds. The paper reviews existing theories and highlights the importance of understanding the characteristics of the lowest layer of air near the sea surface, which is aerodynamically rough. The bulk transfer coefficients are derived using bulk aerodynamic formulae and generalized resistances, considering the logarithmic profiles of wind speed, temperature, and humidity.This paper by Junseki Kondo, published in 1975, estimates the bulk transfer coefficients of the sea surface for sensible heat and water vapor under diabatic conditions. Using recent data on the roughness Reynolds number of the sea surface and the Owen-Thomson theory, Kondo finds that for a reference height of 10 meters, the neutral-lapse transfer coefficient for water vapor is only slightly higher than that for sensible heat. When the wind speed at 10 meters is greater than 3 m/s, the coefficient for sensible heat (C_H) is about 10% higher than that for momentum (C_D). However, for wind speeds below 5 m/s, C_D exceeds C_H, and at 15 m/s, C_H is approximately 0.8 times C_D. Kondo also proposes empirical relationships for the bulk transfer coefficients over a range of wind speeds. The paper reviews existing theories and highlights the importance of understanding the characteristics of the lowest layer of air near the sea surface, which is aerodynamically rough. The bulk transfer coefficients are derived using bulk aerodynamic formulae and generalized resistances, considering the logarithmic profiles of wind speed, temperature, and humidity.