Further Improvements to the Statistical Hurricane Intensity Prediction Scheme (SHIPS) Tập 20 Số 4 - Trang 531-543 - 2005
Mark DeMaria, Michelle Mainelli, Lynn K. Shay, John A. Knaff, John Kaplan
Abstract
Modifications to the Atlantic and east Pacific versions of the operational Statistical Hurricane Intensity Prediction Scheme (SHIPS) for each year from 1997 to 2003 are described. Major changes include the addition of a method to account for the storm decay over land in 2000, the extension of the forecasts from 3 to 5 days in 2001, and the u...... hiện toàn bộ
Revision of Convection and Vertical Diffusion Schemes in the NCEP Global Forecast System Tập 26 Số 4 - Trang 520-533 - 2011
Jongil Han, Hua‐Lu Pan
Abstract
A new physics package containing revised convection and planetary boundary layer (PBL) schemes in the National Centers for Environmental Prediction’s Global Forecast System is described. The shallow convection (SC) scheme in the revision employs a mass flux parameterization replacing the old turbulent diffusion-based approach. For deep conve...... hiện toàn bộ
Intercomparison of Spatial Forecast Verification Methods Tập 24 Số 5 - Trang 1416-1430 - 2009
Eric Gilleland, David Ahijevych, Barbara G. Brown, Barbara Casati, Elizabeth E. Ebert
Abstract
Advancements in weather forecast models and their enhanced resolution have led to substantially improved and more realistic-appearing forecasts for some variables. However, traditional verification scores often indicate poor performance because of the increased small-scale variability so that the true quality of the forecasts is not always c...... hiện toàn bộ
Application of Object-Based Time-Domain Diagnostics for Tracking Precipitation Systems in Convection-Allowing Models Tập 29 Số 3 - Trang 517-542 - 2014
Adam J. Clark, Randy Bullock, Tara Jensen, Ming Xue, Fanyou Kong
Abstract
Meaningful verification and evaluation of convection-allowing models requires approaches that do not rely on point-to-point matches of forecast and observed fields. In this study, one such approach—a beta version of the Method for Object-Based Diagnostic Evaluation (MODE) that incorporates the time dimension [known as MODE time-domain (MODE-...... hiện toàn bộ
The Brazilian Global Atmospheric Model (BAM): Performance for Tropical Rainfall Forecasting and Sensitivity to Convective Scheme and Horizontal Resolution Tập 31 Số 5 - Trang 1547-1572 - 2016
Silvio Nilo Figueroa, José Paulo Bonatti, Paulo Yoshio Kubota, Georg Grell, Hugh Morrison, Saulo R. M. Barros, Júlio Pablo Reyes Fernández, Enver Ramírez, Léo Siqueira, Graziela Luzia, Josiane Silva, Juliana R. Silva, Jayant Pendharkar, Vinícius Capistrano, Débora Souza Alvim, Diego Pereira Enoré, Fábio Luiz Rodrigues Diniz, Praki Satyamurti, Iracema F. A. Cavalcanti, Paulo Nobre, Henrique M. J. Barbosa, Celso L. Mendes, Jairo Panetta
Abstract
This article describes the main features of the Brazilian Global Atmospheric Model (BAM), analyses of its performance for tropical rainfall forecasting, and its sensitivity to convective scheme and horizontal resolution. BAM is the new global atmospheric model of the Center for Weather Forecasting and Climate Research [Centro de Previsão de ...... hiện toàn bộ
Discrimination of Mesoscale Convective System Environments Using Sounding Observations Tập 22 Số 5 - Trang 1045-1062 - 2007
Ariel Cohen, Michael C. Coniglio, Stephen F. Corfidi, Sarah J. Corfidi
Abstract
The prediction of the strength of mesoscale convective systems (MCSs) is a major concern to operational meteorologists and the public. To address this forecast problem, this study examines meteorological variables derived from sounding observations taken in the environment of quasi-linear MCSs. A set of 186 soundings that sampled the beginni...... hiện toàn bộ
GPS Dropwindsonde and WSR-88D Observations of Tropical Cyclone Vertical Wind Profiles and Their Characteristics Tập 28 Số 1 - Trang 77-99 - 2013
Ian M. Giammanco, John L. Schroeder, Mark D. Powell
Abstract
The characteristics of tropical cyclone vertical wind profiles and their associated wind speed peaks below 1.5 km were examined through the use of a large number of GPS dropwindsondes (GPS sondes) and radar-derived velocity–azimuth display (VAD) profiles. Composite wind profiles were generated to document the mean structure of tropical cyclo...... hiện toàn bộ