This book presents the results from the joint USSR/USA Bering Sea Experiment (BESEX), which took place in the central Bering Sea marginal ice zone in February–March 1973. The BESEX program was conceived following the 1971 preliminary Soviet-American negotiations on scientific cooperation in the observation of meteorological phenomena from space. The primary purpose of the experiment was to advance the development of techniques for microwave remote sensing of atmospheric, oceanic, and sea ice parameters. The experimental results were subsequently discussed in May 1974 at a symposium that was held in Leningrad. The 20 papers contained in this book are the proceedings from this symposium.