On the origin of the air between multiple tropopauses at midlatitudes.
Multiple tropopauses are structures that regularly recur in the midlatitudes. Recent studies have relied on the notion of the excursion of tropical air from the upper troposphere into higher latitudes, thereby overlaying the tropopause of the midlatitudes. We herein analyse the origin and characteristics of the air at the Boulder radiosonde station, between the first and second tropopauses combining an analysis of radiosonde data with a Lagrangian approach based on the FlexPart model and ERA-40 analysis data. Our results show that the air between both tropopauses has its origin in midlatitudes.
Smith School of Enterprise and Environment, University of Oxford, Oxford OX1 2BQ, UK. juan.anel@smithschool.ox.ac.uk
Juan Antonio
JA
Añel
Laura
L
de la Torre
Luis
L
Gimeno
D000388:Air / Q000032:analysis*; D001272:Atmosphere / Q000032:analysis*; D003198:Computer Simulation; D008685:Meteorological Concepts; D015233:Models, Statistical