Results 131 to 140 of about 13,836,528 (157)

Simulation of very severe cyclone Mala over Bay of Bengal with HWRF modeling system

Natural Hazards, 2011
Tropical cyclone is one of the most devastating weather phenomena all over the world. The Environmental Modeling Center (EMC) of the National Center for Environmental Prediction (NCEP) has developed a sophisticated mesoscale model known as Hurricane Weather Research and Forecasting (HWRF) system for tropical cyclone studies.
Sujata Pattanayak
exaly   +2 more sources

Evaluating the Impact of Improvement in the Horizontal Diffusion Parameterization on Hurricane Prediction in the Operational Hurricane Weather Research and Forecast (HWRF) Model

Weather and Forecasting, 2018
Abstract Improving physical parameterizations in forecast models is essential for hurricane prediction. This study documents the upgrade of horizontal diffusion parameterization in the Hurricane Weather Research and Forecasting (HWRF) Model and evaluates the impact of this upgrade on hurricane forecasts.
Jun A. Zhang, Frank D. Marks, Jason A. Sippel, Robert F. Rogers, Xuejin Zhang, Sundararaman G. Gopalakrishnan, Zhan Zhang, Vijay Tallapragada   +7 more
openaire   +2 more sources

Evaluation of the Hurricane Weather Research and Forecasting (HWRF) model for tropical cyclone forecasts over the North Indian Ocean (NIO)

Natural Hazards, 2014
The Hurricane Weather Research and Forecast (HWRF) model, which was operational at the US National Centers for Environmental Prediction, was ported in India Meteorological Department (IMD) for its operational tropical cyclone (TC) track and intensity forecast at Regional Specialised Meteorological Center, New Delhi.
Vijay Tallapragada, S K Roy Bhowmik, Roy S K Bhowmik   +2 more
exaly   +2 more sources

A Forecast Cycle–Based Evaluation for Tropical Cyclone Rapid Intensification Forecasts by the Operational HWRF Model

Weather and Forecasting, 2023
Abstract An evaluation framework for tropical cyclone rapid intensification (RI) forecasts is introduced and applied to evaluate the performance of RI forecasts by the operational Hurricane Weather Research and Forecasting (HWRF) Model. The framework is based on the performance of each 5-day forecast cycle, while the conventional RI evaluation is based
Weiguo Wang, Lin Zhu, Bin Liu, Zhan Zhang, Avichal Mehra, Vijay Tallapragada   +5 more
openaire   +1 more source

Advanced Diagnostics for the HWRF Hurricane Modelling System

2016
The objective of this work is to show how to derive some useful first-order model diagnostics from the prognostic variables of numerical weather prediction models. We introduce a basic set of popular diagnostics products, along with illustrations and detailed formulae, that have been adopted into various real-time applications of both tropical cyclone ...
Thiago Quirino, Sundararaman G. Gopalakrishnan   +1 more
openaire   +1 more source

Skill Assessment of NCEP Three-Way Coupled HWRF–HYCOM–WW3 Modeling System: Hurricane Laura Case Study

Weather and Forecasting, 2022
Abstract In this research, we develop a three-way coupled prediction system to advance the realization of air–sea interaction processes. This study considers the sea-state-dependent momentum flux and nonlinear interactions between waves, winds, and ocean currents using the U.S.
Hyun-Sook Kim, Jessica Meixner, Biju Thomas, Brandon G. Reichl, Bin Liu, Avichal Mehra, Alan Wallcraft   +6 more
openaire   +1 more source

Evaluating the Impacts of COSMIC-2 GNSS RO Bending Angle Assimilation on Atlantic Hurricane Forecasts Using the HWRF Model

Monthly Weather Review, 2023
Abstract This study evaluates the impact of assimilating Global Navigation Satellite System (GNSS) radio occultation (RO) bending angles from Formosa Satellite Mission-7/Constellation Observing System for Meteorology, Ionosphere, and Climate-2 (COSMIC-2) receiver satellites on Hurricane Weather Research and Forecasting (HWRF) Model tropical cyclone (TC)
William J. Miller, Yong Chen, Shu-Peng Ho, Xi Shao   +3 more
openaire   +1 more source

The Development of a Consensus Machine Learning Model for Hurricane Rapid Intensification Forecasts with Hurricane Weather Research and Forecasting (HWRF) Data

Weather and Forecasting, 2023
Abstract This study focused on developing a consensus machine learning (CML) model for tropical cyclone (TC) intensity-change forecasting, especially for rapid intensification (RI). This CML model was built upon selected classical machine learning models with the input data extracted from a high-resolution hurricane model, the Hurricane Weather ...
Mu-Chieh Ko, Xiaomin Chen, Miroslav Kubat, Sundararaman Gopalakrishnan   +3 more
openaire   +1 more source

Hurricane Weather Research and Forecasting (HWRF) Model: 2015 Scientific Documentation

2016
This document describes the scientific aspects of the Hurricane Weather Research and Forecasting (HWRF) modeling system. This is based on 2015 HWRF v3.7a public release. This technical note along with the HWRF v3.7a Users Guide provides the user with the scientific description and running instructions for HWRF.
Tallapragara, Vijay, Bernardet, Ligia, Biswas, Mrinal, Ginis, Isaac, Kwon, Young, Liu, Qingfu, Marchok, Tim, Sheinin, Dmitry, Thomas, Biju, Tong, Mingjing, Trahan, Samuel, Wang, Weiguo, Yablonsky, Richard, Zhang, Xuejin   +13 more
openaire   +1 more source

Ocean Component of the HWRF Coupled Model and Model Evaluation

2016
Tropical cyclones (TCs) moving above a warm ocean represent an extreme case of air-sea interaction. Strong TC winds near the ocean surface can cool the sea surface temperature (SST) by several degrees Celsius and generate ocean currents of about 1-2 m/s.
openaire   +1 more source