Results 31 to 40 of about 327 (141)

Vortex Initialization in the NCEP Operational Hurricane Models

open access: yesAtmosphere, 2020
This paper describes the vortex initialization (VI) currently used in NCEP operational hurricane models (HWRF and HMON, and possibly HAFS in the future).
Qingfu Liu   +12 more
doaj   +1 more source

Assimilation of Radial Velocity from Coastal NEXRAD into HWRF for Improved Forecasts of Landfalling Hurricanes [PDF]

open access: yesWeather and Forecasting, 2021
AbstractThe benefits of assimilating Next Generation Weather Radar (NEXRAD) radial velocity data for convective systems have been demonstrated in previous studies. However, impacts of assimilation of such high spatial and temporal resolution observations on hurricane forecasts have not been demonstrated with the National Centers for Environmental ...
Ying Wang, Zhaoxia Pu
openaire   +1 more source

Real-Time Forecasts of Typhoon Rapid Intensification in The North Western Pacific Basin with the NCEP Operational HWRF Model

open access: yesTropical Cyclone Research and Review, 2014
: This study presents the real-time performance of the United States (US) National Centers for Environmental Prediction (NCEP) operational Hurricane Weather Research and Forecast (HWRF) model in predicting rapid intensification (RI) of typhoons in the ...
Vijay Tallapragada, Chanh Kieu
doaj   +1 more source

2022 real-time Hurricane forecasts from an experimental version of the Hurricane analysis and forecast system (HAFSV0.3S)

open access: yesFrontiers in Earth Science, 2023
During the 2022 hurricane season, real-time forecasts were conducted using an experimental version of the Hurricane Analysis and Forecast System (HAFS).
Andrew Hazelton   +27 more
doaj   +1 more source

HWRF Based Ensemble Prediction System Using Perturbations from GEFS and Stochastic Convective Trigger Function

open access: yesTropical Cyclone Research and Review, 2014
: In this study, an ensemble prediction system (EPS) for the operational Hurricane Weather Research and Forecast (HWRF) model at the Environmental Modeling Center (EMC) of National Centers for Environmental Prediction (NCEP) is introduced and evaluated ...
Zhan Zhang   +4 more
doaj   +1 more source

All-Sky Radiance Assimilation of ATMS in HWRF: A Demonstration Study [PDF]

open access: yesMonthly Weather Review, 2018
Abstract Satellite all-sky radiances from the Advanced Technology Microwave Sounder (ATMS) are assimilated into the Hurricane Weather Research and Forecasting (HWRF) Model using the hybrid Gridpoint Statistical Interpolation analysis system (GSI).
Lewis D. Grasso   +4 more
openaire   +1 more source

Sensitivity of an Idealized Tropical Cyclone to the Configuration of the Global Forecast System–Eddy Diffusivity Mass Flux Planetary Boundary Layer Scheme

open access: yesAtmosphere, 2021
The intensity and structure of simulated tropical cyclones (TCs) are known to be sensitive to the planetary boundary layer (PBL) parameterization in numerical weather prediction models.
Evan A. Kalina   +3 more
doaj   +1 more source

Spatial and Temporal Evolution of a Lightning Diagnostic in HWRF (V3.7a) [PDF]

open access: yes, 2019
Abstract. The operational Hurricane Weather Research and Forecast (HWRF) model has been used to investigate the role of lightning diagnostics in the life cycle of tropical cyclones. A lightning parameterization, the Lightning Potential Index (LPI), was implemented into HWRF with the motivation that an improvement in the forecast of lightning will lead ...
Rosado, Keren   +4 more
openaire   +2 more sources

Assessment of Saildrone Extreme Wind Measurements in Hurricane Sam Using MW Satellite Sensors

open access: yesRemote Sensing, 2022
In 2021, a novel NOAA-Saildrone project deployed five uncrewed surface vehicle Saildrones (SDs) to monitor regions of the Atlantic Ocean and Caribbean Sea frequented by tropical cyclones.
Lucrezia Ricciardulli   +3 more
doaj   +1 more source

Hybrid Weighted Random Forests Method for Prediction & Classification of Online Buying Customers [PDF]

open access: yesJournal of Information Technology Management, 2021
Due to enchantment in network technology, the worldwide numbers of internet users are growing rapidly. Most of the internet users are using online purchasing from various sites.
Umesh Kumar Lilhore   +3 more
doaj   +1 more source

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