Change in the tropical cyclone activity around Korea by the East Asian summer monsoon

Choi, Jae‐Kap; Cha, Youngsu; Kim, Jeoung-Yun

doi:10.1186/s40562-017-0067-6

Cited by 3 publications

(1 citation statement)

References 28 publications

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“…In the WPAC basin, TC formation possesses some additional characteristics due to the strong influence of monsoon and complex terrain arrangement beyond traditional factors such as sea surface temperature (SST) or vertical wind shear (e.g., Gray 1968;Lander 1994;Carr and Elsberry 1995;Chan and Kwok 1999;Wang and Chan 2002;Wu et al 2013;Dickinson and Molinari 2002;Frank and Roundy 2006;Cinco et al 2016;Choi et al 2017). Specifically, the low-level circulation in the WPAC basin is strongly governed by southwesterly wind from the Bay of Bengal and northeasterly wind from the Subtropical High during the TC main season (e.g., Zeng 2002, 2003;Wang et al 2004Wang et al , 2008.…”

Section: Introductionmentioning

confidence: 99%

Assessing the Impacts of Augmented Observations on the Forecast of Typhoon Wutip’s (2013) Formation Using the Ensemble Kalman Filter

Tiến

Hoa

Thanh

et al. 2020

Weather and Forecasting

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Abstract In this study, the impacts of different augmented observations on forecasts of Typhoon Wutip’s (2013) formation are examined. Using the local ensemble transformed Kalman filter (LETKF) implemented for the Weather Research and Forecasting (WRF) Model, it is found that the prediction of Wutip’s formation location and timing is strongly governed by the strength of a monsoon trough that extends from the Bay of Bengal to the Philippine Sea. By properly capturing the strength of the monsoon trough after assimilating augmented observations available during Wutip’s early stage, the WRF Model could provide better forecasts of Wutip’s formation location and timing as compared to the forecasts initialized directly from global model analyses. Among different types of augmented observations, the satellite atmospheric motion wind vector (AMV) maintained by the Cooperative Institute for Meteorological Satellite Studies (CIMSS) appears to be the most critical in enhancing the large-scale representation of the monsoon trough. The benefit of augmented observations in Wutip’s formation forecast is most apparent at about 36 h prior to the observed formation time. At the shorter 24-h lead time, there is, however, no clear benefit of augmented observations in predicting the timing and the location of Wutip’s formation due to better global analyses. The results obtained in this study demonstrate the vital role of the CIMSS-AMV data in improving the large-scale environment required for TC formation that one should take into account for real-time TC forecasts.

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Section: Introductionmentioning

confidence: 99%

Assessing the Impacts of Augmented Observations on the Forecast of Typhoon Wutip’s (2013) Formation Using the Ensemble Kalman Filter

Tiến

Hoa

Thanh

et al. 2020

Weather and Forecasting

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Climatological characteristics of the East Asian summer monsoon retreat based on observational analysis

Chen

et al. 2022

Clim Dyn

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Climatic Shift of the Tropical Cyclone Activity Affecting Vietnam’s Coastal Region

Tran-Quang

Pham-Thanh

et al. 2020

Journal of Applied Meteorology and Climatology

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This study examines the climatic shift of the tropical cyclone (TC) frequency affecting Vietnam’s coastal region during 1975-2014. By separating TC databases into two different 20-year epochs, it is found that there is a consistent increase in both the number of strong TCs as well as the number of TC occurrences during the recent epoch (1995-2014) as compared to the reference epoch (1975-1994) across different TC databases. This finding suggests that not only the number of strong TCs but also the lifetime of strong TCs affecting Vietnam’s coastal region has been recently increasing as compared to the reference epoch from 1975-1994. To understand the physical connection of these shifts in the TC frequency and duration, large-scale conditions obtained from reanalysis data are analyzed. Results show that meridional surface temperature gradient (STG) during the recent epoch is substantially larger than that during 1975-1994. Such an increase in the meridional STG is important, because it is potentially linked to the increase in large-scale vertical wind shear as well as the reduced intensity of summer monsoon in the South China Sea between the two epochs.

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Change in the tropical cyclone activity around Korea by the East Asian summer monsoon

Cited by 3 publications

References 28 publications

Assessing the Impacts of Augmented Observations on the Forecast of Typhoon Wutip’s (2013) Formation Using the Ensemble Kalman Filter

Assessing the Impacts of Augmented Observations on the Forecast of Typhoon Wutip’s (2013) Formation Using the Ensemble Kalman Filter

Climatological characteristics of the East Asian summer monsoon retreat based on observational analysis

Climatic Shift of the Tropical Cyclone Activity Affecting Vietnam’s Coastal Region

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