Oral Presentation AMOS Annual Meeting and International Conference on Tropical Meteorology and Oceanography

Tracking Large-scale Precipitation from 20 years TRMM-GPM data: Influence of the Maritime Continent on the Global Tropics (#83)

Shuyi Chen 1
  1. University of Washington Seattle, Seattle, WA, United States

Although previous studies have documented the characteristics of the MJO and diurnal cycle convection over the Maritime Continent, a comprehensive analysis of the convection over a wide range of time and spatial scales in the region were not available. An unprecedented multi-scale convection and precipitation data set is made possible by the 20 years of the TRMM-GPM Multisatellite Precipitation Analysis (TMPA) from 1998-2018. In this study, we extended large-scale precipitation tracking (LPT) as described in Kerns and Chen (2016), which has previously been used for tracking active MJO envelopes, and generalized the method to track various large-scale precipitation time objectives (“LPT objects”) from the equatorial waves, subseasonal, seasonal, monsoons, and longer time scale throughout the year from 1998 – 2018.  The complex multi-scale interaction over the Maritime Continent region is investigated in the context of the global tropical convection and circulation.