Material provided by Brad Ballish, NCO
Data collected on this flight, which had to be cut short due to engine problems, had a strong impact on the analysis. The flight followed a predesigned track, selected based on objective sensitivity guidance. It explored the back side of a surface low. When comparing the first guess field with the final analysis, we can see that the impact of the data moved the surface low more than five degrees to the east. The vertical profile of a sounding indicated that the analysis, as expected, is much more consistent with the targeted dropsonde data than the first guess forecast.