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Radar measurements at Aberystwyth (52.4°\udN, 4.1° W) of winds at tropospheric and lower stratospheric\udheights are shown for 12-13 March 1994 in a region of highly curved flow,\uddownstream of the jet maximum. The perturbations of horizontal velocity have\udcomparable amplitudes in the troposphere and lower stratosphere with downward\udand upward phase propagation, respectively, in these two height regions. The\udsense of rotation with increasing height in hodographs of horizontal\udperturbation velocity derived for hourly intervals show downwards propagation of\udenergy in the troposphere and upward propagation in the lower stratosphere with\udvertical wavelengths of 1.7 to 2.3 km. The results indicate inertia-gravity\udwaves propagating in a direction similar to that of the jet stream but at\udsmaller velocities. Some of the features observed contrast with those of\udprevious observations of inertia-gravity waves propagating transverse to the jet\udstream. The interpretation of the hodographs to derive wave parameters has taken\udaccount of the vertical shear of the background wind transverse to the direction\udof wave propagation.  <b>Key words.</b> Meteorology and atmospheric dynamics\ud(mesoscale meteorology; middle atmosphere dynamics; waves and tides

Inertia-gravity waves in the troposphere and lower stratosphere associated with a jet stream exit region