What if [About this Issue]

Years after taking a course in fluid dynamics, it occurred to me that the wind and temperature of the daily weather are variables in a fluid system that I happen to live inside of. The dynamics of this fluid system, governed by Euler, Navier-Stokes, and thermodynamic equations, are yet more complicated than textbook fluid dynamics due to rain, snow, and hail, all happening globally and at a wide range of altitudes. The gentle or strong wind I feel at any given moment is just a sampling of the velocity field at that location and instant; in other words, when you experience the weather, you´re collecting data.