The sonic anemometer has been commonly used for measurements of both sonic temperatures and wind speeds over decades. Due to increasing concerns about atmospheric transport of surface energy and greenhouse gases, a yearlong observation was conducted on four commonly used sonic anemometers in a well-maintained crop field at Mead, NE. We reexamined three related aspects, respectively: 1) differences in sonic virtual temperatures, three-dimensional wind speeds, (co)variances of temperature and wind speed, and sensible heat fluxes; 2) differences among four types of sonic anemometers caused by air temperature, wind speed, and wind direction dependencies; 3) cospectral contribution differences in sensible heat flux from the 10 Hz observations and, in part, some 20 Hz observations. In addition, some turbulent characteristic variables derived from sonic anemometers such as friction velocities and flow tilted angles were also directionally examined.