Publications by authors named "Pay-Liam Lin"

Article Synopsis
  • Taiwan experiences intense summer rainfall from June to August due to its complex topography and interactions with clouds, leading to significant regional variations in precipitation.
  • A study using 9 years of GPM DPR data (2014-2022) reveals different raindrop sizes and distributions across northern, southern, eastern, and central Taiwan, with central and southern areas showing higher concentrations of larger drops.
  • The research emphasizes that summer monsoon rainfall is predominantly influenced by coalescence and breakup processes, which could enhance the accuracy of cloud modeling in Taiwan's diverse landscape.
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Article Synopsis
  • Northwestern Pacific tropical cyclones pose significant risks to East Asian communities, affecting both life and the economy.
  • This study analyzes raindrop size distributions (RSD) and their variations across different storm types and distances from the storm center using 16 years of data in north Taiwan.
  • Results show that larger raindrops are more common in the inner rainbands, while a decrease in size and rainfall rate occurs with distance, revealing important factors that influence rainfall estimates in these storms.
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Rainfall erosivity (or water erosion) has severe implications on agriculture, water, and land use management. Though, there were Rainfall erosivity studies on regional and global scale, tropical cyclones' Rainfall erosivity is poorly assessed and have not been documented for one of the most cyclones affecting regions of the world like Taiwan. Here, using 15-years of raindrop size distributions (RSD) and 60-years of hourly rain gauges data, we estimated cyclones (also called typhoons) rainfall erosivity over Taiwan, and establish that typhoons' mean rainfall erosivity is higher than the global mean rainfall erosivity.

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Surface data of meteorological parameters (wind speed, wind direction, and mixing height) and air pollutant concentrations (O3, NO, and NO2) were collected for a 92-day period associated with typhoon formation in 2005. The influence of typhoons on O3 concentration were defined by azimuth and distance from Taiwan, and Types A, B, and C correspond to typhoons less than 1,500 km from Taiwan and located between azimuths 45° and 135°, 135° and 225°, and 225° and 45°, respectively. Type D corresponds to typhoons more than 1,500 km from Taiwan.

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This study aimed to identify optimal cold-temperature indices that are associated with the elevated risks of mortality from, and outpatient visits for all causes and cardiopulmonary diseases during the cold seasons (November to April) from 2000 to 2008 in Northern, Central and Southern Taiwan. Eight cold-temperature indices, average, maximum, and minimum temperatures, and the temperature humidity index, wind chill index, apparent temperature, effective temperature (ET), and net effective temperature and their standardized Z scores were applied to distributed lag non-linear models. Index-specific cumulative 26-day (lag 0-25) mortality risk, cumulative 8-day (lag 0-7) outpatient visit risk, and their 95% confidence intervals were estimated at 1 and 2 standardized deviations below the median temperature, comparing with the Z score of the lowest risks for mortality and outpatient visits.

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