A5102001638- Tropical and Extratropical Cyclones Research
- Climate variability and models
- Meteorological Phenomena and Simulations
- Ocean Waves and Remote Sensing
- Flood Risk Assessment and Management
- Precipitation Measurement and Analysis
- Reproductive Physiology in Livestock
- Renal and Vascular Pathologies
- Marine and Coastal Research
- Wireless Communication Networks Research
- Infant Nutrition and Health
- Geographic Information Systems Studies
- Environmental and Industrial Safety
- Digestive system and related health
- Fluid Dynamics Simulations and Interactions
- Hydrological Forecasting Using AI
- Hybrid Renewable Energy Systems
- Gait Recognition and Analysis
- BIM and Construction Integration
- Renal Transplantation Outcomes and Treatments
- ICT Impact and Policies
- Human Pose and Action Recognition
- Animal health and immunology
- Geophysics and Gravity Measurements
- Toxin Mechanisms and Immunotoxins
Korea University
2024
Korea Institute of Energy Research
2024
National Taiwan University
2012-2023
NSF National Center for Atmospheric Research
2019
National Applied Research Laboratories
2010-2017
National Cheng Kung University
2012
Rutgers, The State University of New Jersey
2005
Colorado State University
1989
Parks Victoria
1981
Vitenparken
1981
Abstract In this paper, the impact of outer loop and partial cycling with Weather Research Forecasting Model’s (WRF) three-dimensional variational data assimilation system (3DVAR) is evaluated by analyzing 78 forecasts for three typhoons during 2008 which Taiwan’s Central Bureau (CWB) issued typhoon warnings, including Sinlaku, Hagupit, Jangmi. The use both approaches in WRF 3DVAR are found to reduce track forecast errors more than 30%, averaged over a 72-h period. improvement due approach,...
In this study, an ensemble meteorological modeling system is one-way coupled with a hydrological model to predict typhoon rainfall and flood responses in mountainous watershed Taiwan. This framework includes perturbations of the initial conditions, data analysis methods, physical parameterizations. The predicted from then used drive physically distributed for Lanyang basin during landfall Typhoon Nanmadol (2011). forecast provides track forecasts that are comparable operational center more...
Human milk oligosaccharides (HMO) affect gut microbiota during neonatal development, particularly with respect to the immune system. Bovine milk-based infant formulas have low oligosaccharide contents. Thus, efforts fortify HMO are being undertaken. Two major HMO, 2ʹ-fucosyllactose (2ʹ-FL) and 6ʹ-sialyllactose (6ʹ-SL), exert anti-inflammatory effects; however, associations between effects induced by 2ʹ-FL 6ʹ-SL co-treatment composition metabolite modulation remain unclear. Therefore, in this...
Abstract A tropical cyclone (TC) size parameter, which is defined here as the radius of 15 m s−1 near-surface wind speed (R15), calculated for 145 TCs in western North Pacific during 2000–05 based on QuikSCAT oceanic winds. For 73 that intensified to typhoon intensity their lifetimes, 33% and 67% respective percentiles R15 at storm are used categorize small, medium, large TCs. Whereas many small form from an easterly wave synoptic pattern, monsoon-related formation patterns favorable forming...
Abstract. Due to the Central Mountain Range with an elevation up about 4 km, amount and distribution of rainfall in Taiwan associated typhoons or tropical cyclones (TCs) depends not only on convection within TCs (internal structure) influences from monsoon-scale environmental flow, but also orographic effect. This study analyzes spatial temporal characteristics 62 TC cases that affected by using observations 371 automatic rain stations available period 1989–2002. It is found climatology maps...
Abstract The mesoscale features of 124 tropical cyclone formations in the western North Pacific Ocean during 1999–2004 are investigated through large-scale analyses, satellite infrared brightness temperature (TB), and Quick Scatterometer (QuikSCAT) oceanic wind data. Based on low-level flow surge direction, formation cases classified into six synoptic patterns: easterly wave (EW), northeasterly (NE), coexistence southwesterly (NE–SW), (SW), monsoon confluence (MC), shear (MS). Then general...
Abstract A blending method to merge the NCEP global analysis with regional from WRF variational data assimilation system is implemented using a spatial filter for purpose of initializing Typhoon (TWRF) Model, which has been in operation at Taiwan’s Central Weather Bureau (CWB) since 2010. The blended weighted toward scales greater than cutoff length 1200 km, and below that. TWRF forecast experiments on 19 typhoons July October 2013 over western North Pacific Ocean show that large-scale GFS...
This paper presents an observational and numerical study of the southwesterly flow heavy rainfall associated with Typhoon Mindulle (2004). When made landfall on east coast Taiwan 1 July 2004, a secondary low formed over Strait. The then dissipated after moved out ocean north Taiwan. Subsequently, accompanying strong brought extremely southern central modeling 15-km 5-km grids shows that flow, which resulted from downgradient acceleration toward system Strait, transported convectively...
Abstract. In this paper, we perform a systematic evaluation of the impact Global Positioning System radio occultation (GPSRO) data on typhoon-track prediction over northwestern Pacific. Specifically, assimilation and forecast experiments using Typhoon Weather Research Forecasting (TWRF) system at 45 km resolution 11 typhoons (with total 327 cases) in period 2008–2010 Pacific, with or without use GPSRO refractivity observations. On average, about 100 soundings are assimilated 12 h partially...
Abstract This study examines the 119 tropical cyclone (TC) formations in South China Sea (SCS) during 1972–2002, and particular 20 May June. Eleven of these storms are associated with weak baroclinic environment a mei-yu front, while remaining nine nonfrontal. Seven 11 initial disturbances originated over land have highly similar evolution. Comparison frontal nonfrontal formation shows that usually occurs at lower latitude, is more barotropic, develops faster, possibly intensifies into...
This paper is the first of a two-part series summarizing recent attempts to advance omit understanding physical processes associated with tropical cyclone formation in western North Pacific. A combination rawinsonde composite and individual case analyses are shown for both pre-cyclone cloud clusters (genesis) those-prominent cluster that do not develop into cyclones (nongenesis). research an extension previous works at Colorado State University by McBride, Zehr, Love. The part study concerns...
Abstract This paper presents an observational and numerical study of Typhoon Mindulle (2004) as it affected Taiwan. made landfall on the east coast Taiwan at 1500 UTC 1 July 2004, after 13 h, exited from north coast. Severe rainfall (with a maximum amount 787 mm) occurred over central-southwestern 2 2004. During Mindulle’s main circulation, secondary low formed Strait. However, low, developed significantly (vorticity exceeded 5 × 10−4 s−1 30-km radius), did not replace original center was...
Abstract In this paper, a successful eye-penetration reconnaissance flight by an unmanned aerial vehicle, Aerosonde, into Typhoon Longwang (2005) and the preliminary analyses of collected data are presented. The 10-h is diagnosed through four legs. wind field measured along leg 1 provides tangential radial profiles from outer perimeter eye typhoon at 700-hPa layer. A vertical sounding was taken in 2 derived surface pressure eyewall close to estimates made local weather agencies. Along 3,...
This paper discusses the meteorological conditions associated with tropical cyclone formation in north Indian Ocean during 1979 FGGE year. Seven developing systems are composited together using FUGE Ill-b analyses to show common circulation features surrounding cloud clusters. Three further discussed different environmental influences on low-level buildup of formation. The characteristics these three disturbances' 200 mb outflow patterns and a general discussion activity also given. Results...
Abstract In this study, a tropical cyclone (TC) is considered to be compact if 1) the radius of maximum wind or tangential smaller than what would expected for an average same intensity wind, and 2) decrease outside greater that TC. A structure parameter S defined provide quantitative measure compactness cyclones. Quick Scatterometer (QuikSCAT) oceanic winds are used calculate 171 cyclones during 2000–07. The parameters then classify all cases as either incompact according 33% 67%...
This study examines tropical cyclone (TC) formations in the South China Sea (SCS) associated with strong northeasterly monsoon during late season. Results show that percentage of all vortices develop to TC intensity is lower season when compared mei-yu front May and June. But average formation time for late-season cases significantly shorter than frontal cases. Composite analyses have larger low-level vorticity upper-level divergence as well higher 700-hPa relative humidity nonformation...
Abstract This study analyzes the influence of El Niño–Southern Oscillation (ENSO) on activity tropical cloud clusters (TCCs) in western North Pacific (WNP). A TCC must have at least one embedded mesoscale convective system and it persist for more than 24 hours. In all, 2,248 TCCs were identified during July–October 1981–2009. While (less) form eastern (western) part WNP Niño years normal years, converse is true La Niña years. The ratio cyclone (TC) numbers to (genesis productivity) was...
Tropical cyclones (TCs) in a monsoonal environment may have heavy rain events separate from the eyewall rainfall. Two types of long-lasting rainbands western North Pacific TCs interacting with East Asia summer monsoon during 1999–2009 are identified and effects these on TC size intensity changes examined. For all south-type Outer Mesoscale Convective Systems as defined our previous study, intensification rate is decreased but change not modified. Long-lasting Enhanced Rainbands (ERBs) that...