Abstract
Abstract : Two sets of vertical extrapolation equations were derived to specify initial-guess fields of 10-mb heights and temperatures using a five-year data sample. Both past (t sub - 24) and present (t sub 0) data were considered as specifiers in the first set of equations. Only present (t sub 0) data were used as specifiers in the second set of equations. Both sets of equations showed stability when tested on independent data. Further, verification statistics showed that the results from the independent data were similar to those from the dependent data. Both sets of equations were then compared by incorporating them into a modified successive approximation technique to produce initial-guess fields. These initial-guess fields were similar. An experiment comparing the two sets of equations with equations derived by the U. S. Weather Bureau showed that the TRC equations gave lower specification errors. This technical report includes (or supersedes) information previously published under TM 11-7459-138.
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