Reiner PALOMINO LEMUS, Samir CÓRDOBA MACHADO, Sonia Raquel GÁMIZ-FORTIS, Yolanda CASTRO-DÍEZ, María Jesús ESTEBAN-PARRA

 

This paper analyzes the main features of the West Equatorial America Monsoon (MOAE) as an important component of the climate system that affects the Pacific coast of Colombia. MOAE has been objectively identified quantifying its variability through the Dynamical Normalized Seasonality (DNS) index, obtained using wind data from NCEP. It has been found that the most significant variations in rotation regimes between the JJA and DEF wind vectors, fall into the category of monsoon for the lower levels of atmospheric pressure, with variations in the wind vector angle over 120°. In addition, the DNS identifies significant seasonal changes in the wind field, which are within the category of climatic monsoon. Finally, by relating the DNS at 850 hPa and 925 hPa with precipitation, it has been found that the monsoon exhibits strong regional characteristics, consistent with regional patterns of seasonal rainfall, affecting significantly to the annual and interannual variability of rainfall in the Colombian Pacific region.

7a ASAMBLEA HISPANO-PORTUGUESA DE GEODESIA Y GEOFÍSICA. ISBN 978-84-941323-1-5. San Sebastian (España).