This volume contains the manuscripts of research lectures by the eleven fellows of the summer program. Five of the lectures overlap significantly with the central summer theme of geomagnetism. The other six lectures cover a broad range of current G.F.D. topics from collective instability to strange attractors. Several of these research efforts are quite polished and probably will appear in journals soon. The middle half represent reports of sound progress on studies of thesis calibre. But then, a few of the lectures report on only the very first consequences of a novel idea.