5:15 PM - 6:30 PM
[MIS07-P02] Spatial and temporal variations of heavy rainfall in the Metro Manila, Philippines in the dry-wet transitional season based on a dense surface meteorological observation network
Keywords:Heavy rainfall, Monsoon, Local convection, Metro Manila
To monitor heavy rainfall and thunder cloud in the Metro Manila, Philippines, an observational network of the automatic weather station with lightning detection sensors (P-POTEKA) has been established since 2018. As of June 2020, 35 P-POTEKA stations were installed in the area. In this study, we aimed to investigate spatial and temporal distributions of heavy rainfall in the Metro Manila during the dry-wet transitional season (May-June) of 2019 and 2020 using the P-POTEKA observational data.
The wet season (westerly monsoon season) started in the middle of June in the both of 2019 and 2020. Two tropical cyclones landed in the Philippines in the transitional season of 2020, whereas no tropical cyclone approached in the 2019. The area average total rainfall amounts were larger in 2019 (484.5 mm) than 2020 (309.5 mm). Total numbers (hours) of heavy rainfall events (equal or more than 20.0 mm/h) for all the P-POTEKA stations were also larger in 2019 (131 hours) than 2020 (82 hours). These obtained results may imply that local convection was predominant in 2019. We will introduce the spatial distributions of the heavy rainfall events in the Metro Manila and their diurnal variations at the meeting.
This work was supported by Japan Science and Technology Agency (JST) and Japan International Cooperation Agency (JICA) under the Science and Technology Research Partnership for Sustainable Development (SATREPS) Project.
The wet season (westerly monsoon season) started in the middle of June in the both of 2019 and 2020. Two tropical cyclones landed in the Philippines in the transitional season of 2020, whereas no tropical cyclone approached in the 2019. The area average total rainfall amounts were larger in 2019 (484.5 mm) than 2020 (309.5 mm). Total numbers (hours) of heavy rainfall events (equal or more than 20.0 mm/h) for all the P-POTEKA stations were also larger in 2019 (131 hours) than 2020 (82 hours). These obtained results may imply that local convection was predominant in 2019. We will introduce the spatial distributions of the heavy rainfall events in the Metro Manila and their diurnal variations at the meeting.
This work was supported by Japan Science and Technology Agency (JST) and Japan International Cooperation Agency (JICA) under the Science and Technology Research Partnership for Sustainable Development (SATREPS) Project.