TY - JOUR
T1 - TRANSALP 1989 experimental campaign - II. Simulation of a tracer experiment with Lagrangian particle models
AU - Anfossi, D.
AU - Desiato, F.
AU - Tinarelli, G.
AU - Brusasca, G.
AU - Ferrero, E.
AU - Sacchetti, D.
N1 - Funding Information:
TRANSALP 1989 Campaign was organized and performed by the Joint Research Centre of Ispra, Italy, Paul Scherrer Institut of Villigen, Switzerland, Osservatorio Meteorologico of Locarno Monti, Switzerland in cooperation with our team. The authors wish to acknowledge the above Institutions for the fruitful cooperation. Some authors (Anfossi, Ferrero and Sacchetti) were partially supported by the CNR-ENEL Project “Interactions of energy systems with human health and environment”, Rome, Italy. SPRAY is a property of both ENEL/CRAM and ARIA Technologies (Le Charlebourg, 14-30 Rue de Nantes, 97200 Colombes, France) and is distributed by ARIA Technologies.
PY - 1998/4/1
Y1 - 1998/4/1
N2 - The capability of two 3D Lagrangian particle models (ARCO and SPRAY) in simulating the airborne dispersion in highly complex terrain is tested. The simulations are compared to the tracer experiment TRANSALP-I performed on the 19th of October 1989 in the Alpine region (Canton of Ticino, Switzerland). TRANSALP exercises were part of the EUROTRAC-TRACT Subproject. Tracer was released during one hour (11.00-12.00) near the ground at Iragna, a few kilometres upwind from the bifurcation of two valleys (Leventina and Blenio Valleys); about 40 samplers, located in the two valleys in the range of 40 km, measured 1/2 h average mean concentrations near the ground for five hours. The results of the simulations are presented and discussed. A statistical model evaluation aimed at quantifying the performance of the two models was carried out. The simulations reproduced with a reasonable degree of accuracy the general behaviour of the observed phenomena: the split of the plume between the two valleys, the space and time distribution of the concentration, the concentration maxima locations.
AB - The capability of two 3D Lagrangian particle models (ARCO and SPRAY) in simulating the airborne dispersion in highly complex terrain is tested. The simulations are compared to the tracer experiment TRANSALP-I performed on the 19th of October 1989 in the Alpine region (Canton of Ticino, Switzerland). TRANSALP exercises were part of the EUROTRAC-TRACT Subproject. Tracer was released during one hour (11.00-12.00) near the ground at Iragna, a few kilometres upwind from the bifurcation of two valleys (Leventina and Blenio Valleys); about 40 samplers, located in the two valleys in the range of 40 km, measured 1/2 h average mean concentrations near the ground for five hours. The results of the simulations are presented and discussed. A statistical model evaluation aimed at quantifying the performance of the two models was carried out. The simulations reproduced with a reasonable degree of accuracy the general behaviour of the observed phenomena: the split of the plume between the two valleys, the space and time distribution of the concentration, the concentration maxima locations.
KW - Atmospheric diffusion
KW - Complex terrain
KW - Lagrangian particle model
KW - Model evaluation
UR - http://www.scopus.com/inward/record.url?scp=0032052658&partnerID=8YFLogxK
U2 - 10.1016/S1352-2310(97)00191-X
DO - 10.1016/S1352-2310(97)00191-X
M3 - Article
SN - 1352-2310
VL - 32
SP - 1157
EP - 1166
JO - Atmospheric Environment
JF - Atmospheric Environment
IS - 7
ER -