Monsoon precipitation is the major driver of agricultural productivity in the Myanmar Coast; it is crucial to quantify and understand recent changes in precipitation during the monsoon season over this region. By using multiple precipitation datasets, we demonstrate that total precipitation during monsoon season over the Myanmar Coast has increased slightly but not significantly, but precipitation during the onset and withdrawal phases of monsoon season exhibit a significant increasing trend during 1979–2015, and the contribution of precipitation during the two phases to total monsoon precipitation has increased significantly. The increased precipitation during the onset phase over the Myanmar Coast directly results from the earlier onset of the South Asian Summer Monsoon in recent decades, which is associated with the phase transition of the Interdecadal Pacific Oscillation in the late 1990s. And the precipitation increase during the withdrawal phase is directly due to the enhances of the ascending motion and convection around this region, which is dynamically correlated to the anomalous cyclone-like circulation around the Bay of Bengal as well as the strengthening of the cross-equatorial flow around the equatorial Indian Ocean.

季风降水是缅甸沿海地区农业生产力的主要驱动力；量化和了解该地区季风季节降水的最新变化至关重要。通过使用多个降水数据集，我们证明缅甸海岸季风季节的总降水量略有增加，但没有显着增加，但季风季节的开始和撤离阶段的降水量在1979-2015年期间显示出显着的增加趋势，并且在两个阶段的降水量到季风总降水量已大大增加。在缅甸海岸的发病期，降水增加是直接由于近几十年来南亚夏季风的爆发，这与1990年代末年代际太平洋涛动的相变有关。撤出阶段的降水增加直接归因于该区域附近上升运动和对流的增强，这与孟加拉湾周围旋风状异常环流以及跨赤道的加强动态相关。绕赤道印度洋流动。