Accounting for pulses of photomultiplier tube aftereffect in lidar signals of the Kamchatka middle atmosphere

Bychkov V.V.1, Perezhogin A.S.1, Shevtsov B. M.1, Marichev V.2, Novikov P.V.3, Cheremisin А.A.4
  1. Institute of Cosmophysical Research and Radio Wave Propagation FEB RAS, Mirnaya 7, Paratunka, Kamchatka krai
  2. V.E. Zuev Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, pl. Akademika Zueva 1, Tomsk, 634021 Russia
  3. Krasnoyarsk Institute of Rail Transport, Branch of Irkutsk State University of Railway Transport, Krasnoyarsk
  4. Siberian Federal University, Krasnoyarsk

The technique of correction of middle atmosphere lidar signals taking into account the aftereffect of photomultiplier tube is described. It was shown, that correction allowed to increase the height of dispersion ratio representation. By the results of lidar observations carried out in Kamchatka in summer 2009, a rare event for the latitude 53N was found out. During the week from June, 17 to June, 23 noctilucent clouds at the height of 80-87 km were detected. At the same time a considerable decrease of temperature in this area was registered in «Aura» satellite data. On June, 22 temperature of about 135 K degree was recorded at the height of 87 km.