Improvement in Determination of Ice Water Content from Two-Dimensional Particle Imagery. Part I: Image-to-Mass Relationships

• DOI: 10.1175/jam2398.1
• Publication Date: 2006-10-04T20:06:53Z
• Authors: Brad Baker; R. Paul Lawson
• Keywords: Content (measure theory); Particle (ecology)

Abstract Ice water content in natural clouds is an important but difficult quantity to measure. The goal of a number past studies was find average relationships between the masses and lengths ice particles determine from situ data, such as those routinely recorded with two-dimensional imaging probes. general approach these measure maximum length L mass M dataset crystals collected at ground site. Linear regression analysis performed on logarithms data estimate mass-to-length relationship form = αLβ. Relationships were determined for subsets based crystal habit (shape) well full dataset. In this study, alternative determining using additional parameters width W, area A, perimeter P are explored. A 50% reduction rms error determination relative alone achieved single parameter that combination L, P. new designed take into account shape particle without need classify first. An interesting result that, when applied test dataset, same also shown be achievable alone. Using facilitates reanalysis improvement large existing datasets images, because simply occulted pixels digital images. Possible sources study investigated, usefulness first segregating habits.