caa a22 4500 477061222 CHVBK 20180405111401.0 cr unu---uuuuu 170330e19960101xx s 000 0 eng 10.1007/BF00058702 doi (NATIONALLICENCE)springer-10.1007/BF00058702 A 1-D model of the formation and evolution of Polar Stratospheric Clouds [Elektronische Daten] [G. Panegrossi, D. Fuà, G. Fiocco] A 1-D model of the formation and seasonal evolution of Polar Stratospheric Clouds (PSCs) is described. The model considers PSCs of types 1 and 2 in the vertical range from 8 to 30 km and utilizes real temperature data. The micro-physical processes included in the model are the heterogeneous nucleation and condensation (or evaporation), while sedimentation, gas diffusion and vertical wind velocity are the processes responsible for transport. Model simulations have been compared with PSC data obtained by lidar at the South Pole: results for the winter 1990 are discussed. The different contribution of type 1 and type 2 PSCs to the measured backscattering coefficient has been evidenced. In the simulations, layers of NAT particles form when low values of the backscattering coefficient are measured; similarly, ice particles form when sharper and rapidly changeable structures with higher values of the backscattering coefficient are observed. Significant results on the condensation and depletion of HNO3 and H2O are presented. Water vapor profiles measured during winter 1990 are reproduced quite well. Kluwer Academic Publishers, 1996 polar stratospheric clouds nationallicence computer model nationallicence South Pole nationallicence HNO3 and H2O depletion nationallicence water vapor profiles nationallicence backscattering nationallicence Panegrossi G. Department of Physics, University of Rome ‘La Sapienza', P.le Aldo Moro 5, 00185, Rome, Italy aut Fuà D. Department of Physics, University of Rome ‘La Sapienza', P.le Aldo Moro 5, 00185, Rome, Italy aut Fiocco G. Department of Physics, University of Rome ‘La Sapienza', P.le Aldo Moro 5, 00185, Rome, Italy aut Journal of Atmospheric Chemistry Kluwer Academic Publishers; gopher://gopher.wkap.nl 23/1(1996-01-01), 5-35 0167-7764 23:1<5 1996 23 10874 https://doi.org/10.1007/BF00058702 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00058702 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Panegrossi G. Department of Physics, University of Rome ‘La Sapienza', P.le Aldo Moro 5, 00185, Rome, Italy aut NATIONALLICENCE 700 1- Fuà D. Department of Physics, University of Rome ‘La Sapienza', P.le Aldo Moro 5, 00185, Rome, Italy aut NATIONALLICENCE 700 1- Fiocco G. Department of Physics, University of Rome ‘La Sapienza', P.le Aldo Moro 5, 00185, Rome, Italy aut NATIONALLICENCE 773 0- Journal of Atmospheric Chemistry Kluwer Academic Publishers; gopher://gopher.wkap.nl/ 23/1(1996-01-01), 5-35 0167-7764 23:1<5 1996 23 10874 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer