info:eu-repo/semantics/article
Energetics of wave propagation leading to frost events in South America: extratropical latitudes
Fecha
2017-08Registro en:
Muller, Gabriela Viviana; Gan, Manoel Alonso; Dal Piva, Everson; Energetics of wave propagation leading to frost events in South America: extratropical latitudes; Wiley VCH Verlag; Atmospheric Science Letters; 18; 8; 8-2017; 342-348
1530-261X
CONICET Digital
CONICET
Autor
Muller, Gabriela Viviana
Gan, Manoel Alonso
Dal Piva, Everson
Resumen
The dynamics of wave propagation and energy associated with frosts in extratropical versus tropical South American latitudes is studied. A double wave train propagates through the southern hemisphere following the polar and subtropical jets. If, in the previous day, both trains coincide in phase over the southeast Pacific (southwest Atlantic) Oceans, it will contribute to generate generalized frosts (strong frosts) at extratropical (tropical) latitudes, not affecting tropical (extratropical) latitudes given the wave train zonal propagation. The vertically averaged eddy kinetic energy composites show three maxima associated with those trains over the South Pacific Ocean and South American region.