Wang, L. Y., and Y. F. Fu, 2025: Statistical analysis of North Pacific storm track precipitation based on GPM observation data. Adv. Atmos. Sci., 42(3), 501−514, https://doi.org/10.1007/s00376-024-4104-z.
Citation: Wang, L. Y., and Y. F. Fu, 2025: Statistical analysis of North Pacific storm track precipitation based on GPM observation data. Adv. Atmos. Sci., 42(3), 501−514, https://doi.org/10.1007/s00376-024-4104-z.

Statistical Analysis of North Pacific Storm Track Precipitation Based on GPM Observation Data

  • The North Pacific storm track (NPST) is a high-frequency area of extratropical cyclones and an important channel for water vapor and energy transfer between low and mid–high latitudes. Previous weather and dynamic studies in this region have made significant progress, but due to the lack of ocean surface rainfall observation data, there is a lack of statistical research on precipitation in this area. In this study, statistical research on the spatiotemporal distribution characteristics of NPST rainfall was conducted based on GPM DPR (Global Precipitation Measurement Dual-frequency Precipitation Radar) observation data and ERA5 atmospheric parameters, and analysis and explanations are provided based on the atmospheric parameters. The study found that, compared to low-pressure systems, pressure gradients have a greater impact on cyclone activity and rainfall distribution. This feature, along with the meridional distribution of high atmospheric water vapor in the North Pacific Ocean and low in the north, collectively leads to the offset of high-frequency rainfall areas relative to storm tracks. The distribution of sea surface temperatures in the North Pacific Ocean affects the zonal distribution of storm tracks, causing weather disturbances and precipitation along the storm tracks to exhibit a northward extension from west to east. This study deepens our understanding of the role of NPST in global-scale water vapor and energy balance, and is of great significance for improving the prediction accuracy of climate models with respect to rainfall generated by extratropical cyclones.
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