Simultaneous PMSE observations with ALOMAR‐SOUSY and EISCAT‐VHF radar during the ECHO‐94 Campaign

During the ECHO‐94 campaign PMSE have been observed with the ALOMAR‐SOUSY radar on 53.5 MHz at Andenes (69.28°N; 16.02°E) and with the EISCAT‐VHF radar on 224 MHz at Tromsø (69.58°N; 19.21°E). Comparisons of simultaneous measurements demonstrate generally good agreement between PMSE structures derived by both equipments. A detailed comparison shows differences caused by the mesospheric mean wind field as well as differences of the local dynamic or thermodynamic state at both measuring places.