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Title: | INVESTIGATING THE IMPACT OF AEROSOLS ON RAINFALL AND TYPHOONS OVER SOUTHEAST ASIA | Authors: | LI RUIMIN | ORCID iD: | orcid.org/0000-0003-4916-0382 | Keywords: | precipitation, relative humidity, WRF-Chem, anthropogenic sulphate aerosols, tropical cyclones, Southeast Asia | Issue Date: | 27-Jul-2018 | Citation: | LI RUIMIN (2018-07-27). INVESTIGATING THE IMPACT OF AEROSOLS ON RAINFALL AND TYPHOONS OVER SOUTHEAST ASIA. ScholarBank@NUS Repository. | Abstract: | This study investigated the impacts of aerosols on precipitation over Southeast Asia, in particular the role of aerosols on typhoon intensities related to rainfall and wind strengths. First, the effects of aerosols on the climatological variability of precipitation over Southeast Asia were statistically studied through composite analysis. It was found that aerosols suppress precipitation over the Maritime Continent, especially during fire seasons. Second, the effect of anthropogenic sulphate aerosols on intensity and precipitation of two different typhoons was analysed with numerical simulations. This finding suggests that the role of the vertical distribution of water vapour within typhoons is critical in determining the effects of aerosols on precipitation. Additionally, the modeling results also reveal that increasing aerosol concentration would enhance the wind intensity of a strong typhoon that features a well-organized eye and an axisymmetric structure. This research work is one of the few studies that contributes to the aerosol-typhoon-rainfall analyses. | URI: | http://scholarbank.nus.edu.sg/handle/10635/149551 |
Appears in Collections: | Ph.D Theses (Open) |
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