Correcting airborne temperature data for lags introduced by instruments with two-time-constant responses

Airborne resistance wire temperature sensors can introduce a time lag befor e ambient air temperature changes are registered. It has been found that a second-order linear response system adequately describe, the behavior of th e Rosemount non-deiced 102 series instrument consisting of a platinum resis tance wire sensor with a protective housing. A method has been proposed in the literature to deconvolve measured temperatures based on this system to obtain the ambient temperature. Using the exact solution of the underlying differential equation formulation of that method, a more efficient and more accurate correction algorithm is developed here. As with its predecessor, this new algorithm can be applied to temperature data obtained in dry condi tions and so is suitable for dry boundary layer but not in-cloud measuremen ts.