Using NOGAPS Singular Vectors to Diagnose Large-scale Influences on Tropical Cyclogenesis
نویسندگان
چکیده
Four significant tropical cyclones (TCs) formed during the TCS-08 field phase: Nuri, Sinlaku, Hagupit and Jangmi. The first stage of the research is the diagnosis of NOGAPS SVs associated with these storms. The real-time NOGAPS SV sensitivity guidance that was produced for developing systems in a region close to Guam (Fig. 1) during TCS-08 is currently being analyzed. If necessary, the NOGAPS SV guidance will be rerun by Co-PI Reynolds with a specific focus on verification regions centered on the developing systems. The dominant sensitivity patterns, evolving horizontal and vertical structure
منابع مشابه
The Impact of COSMIC GPS RO Data on the Analysis and Prediction of Tropical Cyclogenesis
Tropical cyclonesis remains as one of the most challenging problems in atmospheric sciences, and is still subject to lively debate. Some argue that the tropical cyclogenesis is mostly controlled by large-scale circulations, and therefore, possesses a high degree of predictability. Others argue that the large-scale circulations only provides a favorable environment, the actual cyclogenesis is si...
متن کاملConvective Self-Aggregation and Tropical Cyclogenesis under the Hypohydrostatic Rescaling
The behavior of rotating and nonrotating aggregated convection is examined at various horizontal resolutions using the hypohydrostatic, or reduced acceleration in the vertical (RAVE), rescaling. This modification of the equations of motion reduces the scale separation between convectiveand larger-scale motions, enabling the simultaneous and explicit representation of both types of flow in a sin...
متن کاملCyclogenetic Perturbations and Analysis Errors Decomposed into Singular Vectors
Singular vectors (SVs) have been applied to cyclogenesis, to initializing ensemble forecasts, and in predictability studies. Ideally, the calculation of the SVs would employ the analysis error covariance norm at the initial time or, in the case of cyclogenesis, a norm based on the statistics of initial perturbations, but the energy norm is often used as a more practical substitute. To illustrat...
متن کاملTropical Cyclogenesis Associated with Kelvin Waves and the Madden–Julian Oscillation
The Madden–Julian oscillation (MJO) influences tropical cyclone formation around the globe. Convectively coupled Kelvin waves are often embedded within the MJO, but their role in tropical cyclogenesis remains uncertain. This case study identifies the influences of the MJO and a series of Kelvin waves on the formation of two tropical cyclones. Typhoons Rammasun and Chataan developed in the weste...
متن کاملLarge-Scale Patterns Associated with Tropical Cyclogenesis in the Western Pacific
Five characteristic, low-level, large-scale dynamical patterns associated with tropical cyclogenesis in the western North Pacific basin are examined along with their capacity to generate the type of mesoscale convective systems that precede genesis. An 8-yr analysis set for the region is used to identify, and create composites for, the five characteristic patterns of monsoon shear line, monsoon...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2010