| An impressive aircraft observation example results from an analysis of High resolution Interferometer Sounder (HIS) data obtained at Wallops Island, VA on Aug 30, 1995. Both HIS and GOES-8 sounding data were assimilated into a 10 km spatial resolution mesoscale NWP model. The aircraft and GOES observations covered a 75-km x 75-km grid, with 10 km spacing, and were repeated each hour over a six-hour period. The high vertical resolution HIS soundings revealed the cellular motions associated with the land breeze phenomena and showed moisture features moving with the wind. Neither of these mesoscale circulation features could be resolved with the lower vertical resolution GOES-8 sounding data. |