Surname: Cierpik First Name: Kim Status= studentyes Institution: University of Colorado, Boulder E-mail: cierpik@belanna.colorado.edu ---------------------------------------- Title: Migrating and Nonmigrating Semidiurnal Tide Components From Combined Space-based and Ground-based Measurements ---------------------------------------- Authors: Kim M. Cierpik, Jeffrey M. Forbes, Scott E. Palo, A. Fahrutdinova, C. Jacobi, A. Manson, S. Miyahara, N.J. Mitchell, Y. Portnyagin ---------------------------------------- Abstract: The purpose of this investigation is to use combined ground-based and space-based measurements of winds to derive the migrating and nonmigrating semidiurnal tidal components in the mesosphere and lower thermosphere between 50-55N. To better understand the aliasing and sampling issues, a mock data set is formed by sampling the Kyushu University GCM output from both the ground and satellite perspectives, and analyzed in the same manner as the actual measurements. Comparisons with full analysis of the GCM provides insight into uncertainties connected with the true measurement analysis. Particular attention is devoted to extracting the month-to-month variability of the tidal components and their longitudinal structure. ---------------------------------------- Discipline Category: Mesosphere Discipline Category: Thermosphere