Abstract: The sensitivity of 2-day Northern Hemisphere extratropical forecast errors to changes in initial conditions, computed daily over a 4-yr period, is documented. The sensitivity is computed using the (dry) adjoint of the Navy ...

Abstract: Singular vectors of the linearized equations of motion have been used to study the instability properties of the atmosphere?ocean system and its related predictability. A third use of these singular vectors is proposed ...

Abstract: High-density geostationary satellite wind observations have become an important new contributor to the observing network over oceanic regions. During the 1998 North Pacific Experiment (NORPEX), assimilation of these data ...

Abstract: The objectives and preliminary results of an interagency field program, the North Pacific Experiment (NORPEX), which took place between 14 January and 27 February 1998, are described. NORPEX represents an effort to directly ...