Impacts of acoustic and gravity waves on the ionosphere

The impact of regional-scale neutral atmospheric waves has been demonstrated to have profound effects on the ionosphere, but circumstances under which they generate ionospheric disturbances and seed plasma instabilities are not well understood. Neutral vary from infrasonic <20 Hz gravity with periods order 10 min, for simplicity, hereafter combined common term Acoustic Gravity Waves (AGWs). There other longer period like planetary lower middle atmosphere, whose important globally, considered here. most ubiquitous frequently observed AGWs ionosphere Traveling Ionospheric Disturbances (TIDs), also affect global ionosphere/thermosphere circulation can trigger (e.g., Perkins, Equatorial Spread F). purpose this white paper is outline additional studies observations that required in coming decade improve our understanding ionosphere.