摘要
Thirty five day records of wind speed and atmospheric pressure, measured and recorded every two hours, were obtained on a ship that sailed from California to Japan along latitude 35 N in the spring of 1976. Time variations of two days, which can be seen in the raw data of both variables, were brought out more clearly by a two-step smoothing process followed by a subtraction to reduce both the lower and higher frequencies. Comparing the two similarly processed records shows that when the wind speed is relatively strong, the pressure is relatively weak, and vice versa, at the two day time scale. An argument is given that Bernoulli’s law was operating in those weather systems.
Thirty five day records of wind speed and atmospheric pressure, measured and recorded every two hours, were obtained on a ship that sailed from California to Japan along latitude 35 N in the spring of 1976. Time variations of two days, which can be seen in the raw data of both variables, were brought out more clearly by a two-step smoothing process followed by a subtraction to reduce both the lower and higher frequencies. Comparing the two similarly processed records shows that when the wind speed is relatively strong, the pressure is relatively weak, and vice versa, at the two day time scale. An argument is given that Bernoulli’s law was operating in those weather systems.
