Dynamic Tropopause Analysis: Case Study in South America

For this work, it was observed the relationship between the dynamic tropopause (TD) and the variables obtained from MERRA reanalysis datasets which described the life cycle of the three main meteorological systems acting in upper levels of the atmosphere over South America, as to say: the Bolivian High (AB), the upper tropospheric cyclonic vortices (VCAN) of Northeast Brazilian (NeB) and the extratropical VCANs, which occurred simultaneously in February 01, 2005. The remarkable differences observed between the referred systems were that the extratropical VCAN presented a classic behavior with an enhanced TD anomaly and subsident vertical movement west of the anomaly and ascendant vertical movement in the east, while the VCAN of NeB presented a less profound TD anomaly with some ascending movement and absence of subsident movement and the AB has not presented TD anomaly although ascending and subsident vertical movements were present. Despite the TD folding in the VCAN of NeB no ozone concentration tendency was observed probably because of the low ozone concentration in the tropics in contrast with the extratropical VCAN that presented a higher ozone tendency in its TD anomaly.