JULIA radar observations of equatorial spread F (ESF) plasma irregularities made between August, 1996 and April, 2000 are analyzed statistically. Interpretation of the data is simplified by adopting a taxonomy of echo types which distinguishes between bottom-type, bottomside, topside, and post-midnight irregularities. The data reveal patterns in the occurrence of ESF in the Peruvian sector that...

Pp. 47?. Philadelphia: Lea Brothers & Co. 1897. This book is intended for the use of three classes of persons: " the present generation of physicians who prescribe travel, the travelers themselves, and the rising generation of medical students should be taught to recognize the principles of medical climatology and its proper relation to general therapeutics." The author rightly summarises much ...

Glossary AR(1): Autoregressive model of order one. The present state of a system can be described as a linear function of the state at the previous time, plus timeindependent noise. data assimilation: Method of optimally combining irregularly spaced observations with dynamical constraints to produce dynamically consistent fields on regular grids. CCA: Canonical Correlation Analysis EOF: Empiric...