Tsai, I-Chun蔡宜君

Associate Research Fellow

Research Interests

Aerosol parameterization and modeling, Aerosol-cloud interactions, Climate-Chemistry interactions, Cloud Physics, Atmospheric Physical Chemistry

 

Representative Publications

Tsai, I-C., C.-W. Lin, S.-H. Su, C.-W. Chang, C.-W. Su, and S.-C. C. Lung, 2024c: Spatial and Temporal Analysis of Scooter-Induced Traffic Patterns and Their Environmental Implications. Atmospheric Environmental:X23, 100291, ttps://doi.org/10.1016/j.aeaoa.2024.100291

Tsai, I-C., S.-W. Yang, C.-J. Shiu, Y.-Y. Chen, C.-A. Chen, W.-L. Lee, and H.-H. Hsu,  2024b: Aerosol Impacts on the East Asian Winter Monsoon: Insights from TaiESM1 and CMIP6 Simulations. International Journal of Climatology, 44(9), 2816–2832. https://doi.org/10.1002/joc.8483

Tsai, I-C., P.-R. Hsieh, H.-H. Hsu, Y.-S. Tung, Y.-M. Chen, and C.-T. Cheng, 2024a: Climate Change-induced Impact on PM2.5 in Taiwan under 2 and 4 °C Global Warming. Atmospheric Pollution Research15(6), 120106https://doi.org/10.1016/j.apr.2024.102106.

Wu, C.-H., S.-Y. Lee, I-C. Tsai, C.-J. Shiu, Y.-Y. Chen, 2023: Volcanic contribution to the 1990s North Pacific climate shift in winter. Scientific Reports, 13 (1), 5672.
Wu, C.-H., C.-J. Shiu, Y.-Y. Chen, I-C. Tsai, S.-Y. Lee, 2023: Climatological changes in East Asian winter monsoon circulation in a warmer future, Atmospheric Research, 284, 106593, https://doi.org/10.1016/j.atmosres.2022.106593.

Tsai, I-C.*, P.-R. Hsieh, C.-T. Cheng, Y.-S. Tung, L.-Y. Lin and H.-H. Hsu, 2023: Impacts of 2 and 4 °C global warmings on extreme temperatures in Taiwan, International Journal of Climatology. 43(2), 702-719, https://doi.org/10.1002/joc.7815.
Chen, Y.-C., P.-H. Lin, W.-N. Chen, I-C. Tsai, S. Laplace, C.-C. Ting, C. Fu, Charles, C.-K. Chou, 2022: Decade long-term measurement for investigating vertical thermodynamic of urban boundary layer, Urban Climate, 46, 2022, 101301,https://doi.org/10.1016/j.uclim.2022.101301. 

Tsai, I-C., L.-S. Shu, J.-P. Chen, P.-R. Hsieh, and C.-T. Cheng, 2022: Projecting ozone impact on crop yield in Taiwan under climate warming. Science of the Total Environment, 846(2022), 157437, https://doi.org/10.1016/j.scitotenv.2022.157437.

S.-Y. Lee, S.-C. C. Lung, P.-G. Chiu, W.-C. Wang, I-C. Tsai, T.-H. Lin, 2022: Northern hemisphere urban heat stress and associated labor hour hazard from ERA5 reanalysis. Int. J. Environ. Res. Public Health. 2022, 19, 8163. https://doi.org/10.3390/ijerph19138163

Tsai, I-C.*, P.-R. Hsieh, H. C. Cheung, and C. C.-K. Chou, 2021: Aerosol impacts on fog microphysics over the western side of Taiwan Strait in April from 2015 to 2017, Atmospheric Environment, 118523,

Tsai, I-C.*, C.-Y. Lee, S.-C. C. Lung, C.-W. Su, 2021: Characterization of the vehicle emissions in the Greater Taipei Area through vision-based traffic analysis system and its impacts on urban air quality, Science of the Total Environment, 782(2021), 146571, ISSN 0048-9697.

Lee, W.-L., Y.-C. Wang, C.-J. Shiu, I-C. Tsai, C.-Y. Tu, Y.-Y. Lan, J.-P. Chen, H.-L. Pan, and H.-H. Hsu, 2020: Taiwan Earth System Model Version 1: description and evaluation of mean state, Geosci. Model Dev., 13, 3887–3904.

Zhang, L., T.-M. Fu, H. Tian, Y. Ma, J.-P. Chen, T.-C. Tsai, I-C. Tsai, Z. Meng, X. Yang. 2020: Anthropogenic Aerosols Significantly Reduce Mesoscale Convective System Occurrences and Precipitation over Southern China in April, Geophysical Research Letters. 47, e2019GL086204.

Wu, C.-H., I-C. Tsai, P.-C. Tsai and Y.-S. Tung, 2019: Large-Scale Seasonal Control of Air Quality in Taiwan, Atmospheric Environment, 214, 116868.

Huang C.-C., S.-H. Chen, Y.-C. Lin, K. Earl, T. Matsui, H.-H. Lee, I-C. Tsai, J.-P. Chen, C.-T. Cheng, 2019: Impacts of Dust-Radiation versus Dust-Cloud Interactions on the Development of a Modeled Mesoscale Convective System over North Africa.  Monthly Weather Review, 147, 3301–3326.

Tsai, I-C.*, W.-Y. Chen, J.-P. Chen, and M.-C. Liang, 2019: Kinetic mass-transfer calculation of water isotope fractionation due to cloud microphysics in a regional meteorological model, Atmos. Chem. Phys., 19, 1753-1766.

 

Highlights

  • Assessing the Multifaceted Impacts of Climate Change on Taiwan: Urban Vulnerability, Air Quality, and Agricultural Productivity
In the course of conducting high-resolution simulations to assess the impacts of climate change in Taiwan, our study has made several critical findings. Firstly, we observed a more rapid increase in heatwave occurrences in urban areas compared to other land-use types within Taiwan, highlighting urban regions' heightened vulnerability. Conversely, forested areas appear less susceptible to the adverse effects of global warming. Secondly, our analysis indicates that the warming climate exacerbates the frequency of polluted days in Taiwan, attributable to diminished strength in near-surface winds. Thirdly, the study reveals a decline in the relative yield of key crops such as wheat, tomatoes, and potatoes under a warming climate. Notably, ozone-induced yield reductions were predominant under a scenario of 2°C warming. However, at a 4°C warming threshold, the direct impacts of increased temperatures on crop yield reductions became more significant. These findings underscore the multifaceted impacts of climate change on Taiwan's environment and agriculture, necessitating targeted mitigation and adaptation strategies. (Tsai et al., 2022, 2023, 2024a)
  • Advanced Traffic Data Integration for Improved Air Quality Modeling in the Greater Taipei Area:
In our study focusing on the Greater Taipei Area, we aimed to refine transportation emissions inventories by incorporating web-based traffic data and a vision-based traffic analysis system. Our findings reveal that sedans and scooters represent approximately 90% of the traffic, with notable spatial variations: sedans are more common in rural areas, whereas scooters dominate in urban and suburban regions. We also identified distinct traffic patterns for weekdays versus weekends, which significantly improved the accuracy of our air quality models, especially in predicting concentrations of carbon monoxide and particulate matter. This research addresses a significant gap in the literature by providing a comprehensive spatial and temporal analysis of scooter traffic, a crucial factor in urban transportation. The insights gained from this study illuminate the impact of vehicle types on air quality and highlight the potential of advanced traffic data integration for developing more effective urban air quality management strategies, underscoring the importance of targeted interventions based on vehicular behaviors and preferences. (Tsai et al, 2021b, 2024c)
  • Enhancing Climate Predictions in Taiwan: The Role of Aerosol in the Taiwan Earth System Model

Lee et al. (2020) have successfully employed a homemade aerosol parameterization scheme within the Taiwan Earth System Model (TaiESM) to bolster Taiwan’s climate modeling capabilities. After thorough verification with reanalysis data and observations, TaiESM has proven its ability to accurately simulate large-scale circulations and precipitation, earning its place in the sixth phase of the Coupled Model Intercomparison Project due to its robust representation of climatological states and near-surface aerosol concentrations. In Tsai et al. (2024b), The effect of aerosols on winter Asian monsoons were investigated by improving and conducting TaiESM simulations. Anthropogenic aerosols were shown to weaken and strengthen the intensity of the Aleutian Low and the Siberian High, respectively, resulting in a weakened East Asia winter monsoon in the lower atmosphere over the extratropical areas. The tropical rain belt shifts southward for the southern area, representing the local Hadley circulation change, and the precipitation is decreased in southern Asia. 

 
  • Ph.D.
    Depart. of Atmospheric Sciences
    National Taiwan University, Taiwan (2009)
  • M.S.
    Depart. of Atmospheric Sciences
    National Taiwan University, Taiwan (2001)
  • B.S.
    Depart. of Earth Sciences
    National Taiwan Normal University, Taiwan (1997)
  • (02) 2787-5935

  • ictsai

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