A5051622349- Tropical and Extratropical Cyclones Research
- Meteorological Phenomena and Simulations
- Climate variability and models
- Ocean Waves and Remote Sensing
- Precipitation Measurement and Analysis
- Neutropenia and Cancer Infections
- Multiple Myeloma Research and Treatments
- Optimization and Mathematical Programming
- Atmospheric aerosols and clouds
- Medical Image Segmentation Techniques
- Soil Moisture and Remote Sensing
- Atmospheric and Environmental Gas Dynamics
- Mycobacterium research and diagnosis
- Peptidase Inhibition and Analysis
- Natural Compounds in Disease Treatment
- Environmental Changes in China
- earthquake and tectonic studies
- Tumors and Oncological Cases
- Coastal and Marine Dynamics
- Histiocytic Disorders and Treatments
- Municipal Solid Waste Management
- Geophysics and Gravity Measurements
- Chronic Myeloid Leukemia Treatments
- Fungal Infections and Studies
- Climate change impacts on agriculture
NOAA Atlantic Oceanographic and Meteorological Laboratories
2011-2024
Royal Society of Chemistry
2024
Centre National pour la Recherche Scientifique et Technique (CNRST)
2024
National Oceanic and Atmospheric Administration
2010-2023
University of Miami
2010-2019
NOAA Environmental Modeling Center
2019
NOAA National Centers for Environmental Prediction
2019
Hangzhou Red Cross Hospital
2012-2018
North Carolina State University
2003-2008
Gifu University
2007
Abstract The Hurricane Weather Research and Forecasting (HWRF) system was used in an idealized framework to gain a fundamental understanding of the variability tropical cyclone (TC) structure intensity prediction that may arise due vertical diffusion. modeling uses Medium-Range Forecast parameterization scheme. Flight-level data collected by NOAA WP-3D research aircraft during eyewall penetration category 5 Hugo (1989) at altitude about 450–500 m Allen (1980) were as basis best match modeled...
Abstract Forecasting intensity changes in tropical cyclones (TCs) is a complex and challenging multiscale problem. While cloud-resolving numerical models using horizontal grid resolution of 1–3 km are starting to show some skill predicting the individual cases, it not clear at this time what may be reasonable for forecasting TC on day-to-day-basis. The Experimental Hurricane Weather Research System (HWRFX) was used within an idealized framework gain fundamental understanding influence...
Abstract This paper provides an account of the performance experimental version Hurricane Weather Research and Forecasting system (HWRFX) for 87 cases Atlantic tropical cyclones during 2005, 2007, 2009 hurricane seasons. The HWRFX was used to study influence model grid resolution, initial conditions, physics. For each case, run produce 126 h forecast with two versions horizontal namely, (i) a parent domain at resolution about 27 km 9-km moving nest (27:9) (ii) 9 3-km (9:3). former selected...
An update of the progress achieved as part NOAA Intensity Forecasting Experiment (IFEX) is provided. Included a brief summary noteworthy aircraft missions flown in years since 2005, first year IFEX flights occurred, well description research and development activities that directly address three primary goals: 1) collect observations span tropical cyclone (TC) life cycle variety environments for model initialization evaluation; 2) develop refine measurement strategies technologies provide...
The next generation Hurricane Analysis and Forecast System (HAFS) has been developed recently in the National Oceanic Atmospheric Administration (NOAA) to accelerate improvement of tropical cyclone (TC) forecasts within Unified (UFS) framework. finite-volume cubed sphere (FV3) based convection-allowing HAFS Stand-Alone Regional model (HAFS-SAR) was successfully implemented during Improvement Project (HFIP) real-time experiments for 2019 Atlantic TC season. HAFS-SAR a single large 3-km...
Abstract The Hurricane Weather Research and Forecasting Model (HWRF) was the flagship hurricane model at NOAA’s National Centers for Environmental Prediction 16 years a state-of-the-art tool tropical cyclone (TC) intensity prediction Service across globe. HWRF joint development between NOAA research operations, specifically Modeling Center Atlantic Oceanographic Meteorological Laboratory. Significant support also came from Center, Developmental Testbed University Corporation Atmospheric...
Abstract The Hurricane Weather Research and Forecasting (HWRF) Ensemble Data Assimilation System (HEDAS) is developed to assimilate tropical cyclone inner-core observations for high-resolution vortex initialization. It based on a serial implementation of the square root ensemble Kalman filter (EnKF). In this study, HWRF used in an experimental configuration with horizontal grid spacing 9 (3) km outer (inner) domain. HEDAS applied 83 cases from years 2008 2011. With exception two Hilary...
Abstract The Hurricane Weather Research and Forecasting Model (HWRF) was operationally implemented with a 27-km outer domain 9-km moving nest in 2007 (H007) as tropical cyclone forecast model for the North Atlantic eastern Pacific hurricane basins. During 2012 season, modified version of HWRF (H212), which increased horizontal resolution by adding third (3 km) within nest, replaced H007. H212 thus became first operational running at convection-permitting resolution. In addition, there were...
Abstract NOAA has been gathering high-resolution, flight-level dropwindsonde and airborne Doppler radar data in tropical cyclones for almost three decades; the U.S. Air Force routinely obtained same type quality of data, excepting radar, most that time. The have used operational diagnosis research, and, starting 2013, assimilated into regional cyclone models. This study is an effort to quantify impact assimilating these a version Hurricane Weather Research Forecasting model using ensemble...
Abstract Improving physical parameterizations in forecast models is essential for hurricane prediction. This study documents the upgrade of horizontal diffusion parameterization Hurricane Weather Research and Forecasting (HWRF) Model evaluates impact this on forecasts. The mixing length Lh was modified based aircraft observations extensive idealized real-case numerical experiments. Following an earlier work by first two authors, who focused understanding how worked HWRF its dynamical...
Abstract The FV3GFS is the current operational Global Forecast System (GFS) at National Centers for Environmental Prediction (NCEP), which combines a finite-volume cubed sphere dynamical core (FV3) and GFS physics. In this study, used to gain understanding of rapid intensification (RI) tropical cyclones (TCs) in shear. analysis demonstrates importance TC structure complex system like Hurricane Michael, intensified category 5 hurricane over Gulf Mexico despite 20 kt (10 m s −1 ) vertical wind...
Using the hurricane weather research and forecasting experimental modeling system (HWRFx), researchers examined impact of increased model resolution on performance in a select sample tropical cyclones from 2005 2007 seasons.
This paper describes the vortex initialization (VI) currently used in NCEP operational hurricane models (HWRF and HMON, possibly HAFS future). The VI corrects background fields for models: it consists of relocation, size intensity corrections. creates an improved field data assimilation thereby produces analysis forecast. after can be as initial (as HMON model, without assimilation) or a HWRF model).
Abstract A series of 5-day numerical simulations idealized hurricane vortices under the influence different background flows is performed by varying vertical grid resolution (VGR) in portions atmosphere with operational version Hurricane Weather Research and Forecasting Model order to study sensitivity intensity forecasts distributions VGR. Increasing VGR from 21 43 levels produces stronger hurricanes, whereas increasing it further 64 does not intensify storms further, but fluctuations are...
Abstract In this study, the design of movable multilevel nesting (MMLN) in Hurricane Weather Research and Forecasting (HWRF) modeling system is documented. The configuration a new experimental HWRF with much larger horizontal outer domain multiple sets MMLN, referred to as “basin scale” HWRF, also described. performance applied for various difficult forecast scenarios such 1) simulating storms [i.e., Hurricanes Earl (2010), Danielle Frank (2010)] 2) forecasting tropical cyclone (TC)...
Abstract The Hurricane Weather Research and Forecasting (HWRF) Model is a dynamical model that has shown annual improvements in its tropical cyclone (TC) track forecasts as result of various modifications. This study focuses on an experimental version HWRF, called the basin-scale HWRF (HWRF-B), configured with 1) large, static outer domain to cover multiple TC basins 2) sets high-resolution movable nests produce for several TCs simultaneously. Although HWRF-B operational produced comparable...
Abstract NOAA’s Hurricane Analysis and Forecast System (HAFS) is an evolving FV3-based hurricane modeling system that expected to replace the operational models at National Weather Service. Supported by Improvement Program (HFIP), global-nested regional versions of HAFS were run in real time 2019 create first baseline for advancement. In this study, forecasts from configuration (HAFS-globalnest) are evaluated compared with other experimental models. The HAFS-globalnest covered period July...
Abstract Two idealized simulations by the Hurricane Weather Research and Forecast (HWRF) model are presented to examine impact of physics on simulated eyewall replacement cycle (ERC). While no ERC is produced in control simulation that uses operational HWRF physics, sensitivity experiment with different generates an possesses key features observed ERCs real tropical cyclones. Likely reasons for not producing include lack outer rainband convection at far radii from eyewall, excessive ice...
Abstract Hurricane Joaquin (2015) was characterized by high track forecast uncertainty when it approached the Bahamas from 29 September 2015 to 1 October 2015, with 5-day predictions ranging landfall in United States east of Bermuda. The source large spread forecasts is investigated using an ensemble prediction system (EPS) based on Weather Research and Forecasting (HWRF) Model. For first time, a high-resolution analysis HWRF-based EPS performed isolate factors that control tropical cyclone...
Super Typhoon Saomai (2006, 08W), which caused historical disaster in the landfall region, is most powerful typhoon ever making Mainland China since 1949. The impact of Tropical Storm Bopha 10W) on regarded as a binary tropical cyclone (TC) interaction. In order to quantify influence intensity Saomai, set numerical experiments are performed by artificially modifying its initial conditions. It shown that changing has significant effects simulating Saomai’s intensities, structures, and tracks....