Variability of the quasi-2-day wave observed in the MLT region during the PSMOS campaign of June–August 1999

D Pancheva, N J Mitchell, A H Manson, C E Meek, C Jacobi, Y Portnyagin, E Merzlyakov, W K Hocking, J MacDougall, W Singer, K Igarashi, R R Clark, D M Riggin, S J Franke, D Kurschner, A N Fahrutdinova, A M Stepanov, B L Kashcheyev, A N Oleynikov, H G Muller