Soil Initialization Strategy for Use in Limited-Area Weather Prediction SystemsMonthly Weather Review - Tập 139 Số 6 - Trang 1844-1860 - 2011
Francesca Di Giuseppe, D. Césari, Giovanni Bonafè
Abstract
Three diverse methods of initializing soil moisture and temperature in limited-area numerical weather prediction models are compared and assessed through the use of nonstandard surface observations to identify the approach that best combines ease of implementation, improvement in forecast skill, and realistic estimations of soil parameters. ...... hiện toàn bộ
Hurricane Gustav (2008) Waves and Storm Surge: Hindcast, Synoptic Analysis, and Validation in Southern LouisianaMonthly Weather Review - Tập 139 Số 8 - Trang 2488-2522 - 2011
J. C. Dietrich, Joannes J. Westerink, Andrew B. Kennedy, Jane McKee Smith, Robert E. Jensen, Marcel Zijlema, L.H. Holthuijsen, Clint Dawson, Richard A. Luettich, Mark D. Powell, Vincent J. Cardone, Andrew T. Cox, Gregory W. Stone, Hasan Pourtaheri, Mark Hope, Seizo Tanaka, L. G. Westerink, H. J. Westerink, Zachary Cobell
AbstractHurricane Gustav (2008) made landfall in southern Louisiana on 1 September 2008 with its eye never closer than 75 km to New Orleans, but its waves and storm surge threatened to flood the city. Easterly tropical-storm-strength winds impacted the region east of the Mississippi River for 12–15 h, allowing for early surge to develop up to 3.5 m there and enter ...... hiện toàn bộ
Mesoscale Convective Systems over Western Equatorial Africa and Their Relationship to Large-Scale CirculationMonthly Weather Review - Tập 137 Số 4 - Trang 1272-1294 - 2009
Brian Jackson, Sharon E. Nicholson, Douglas Klotter
Abstract
This study examines mesoscale convective systems (MCSs) over western equatorial Africa using data from the Tropical Rainfall Measuring Mission (TRMM) satellite. This region experiences some of the world’s most intense thunderstorms and highest lightning frequency, but has low rainfall relative to other equatorial regions. The analyses of MCS...... hiện toàn bộ
Correlation-Cutoff Method for Covariance Localization in Strongly Coupled Data AssimilationMonthly Weather Review - Tập 146 Số 9 - Trang 2881-2889 - 2018
T. Yoshida, Eugenia Kalnay
AbstractStrongly coupled data assimilation (SCDA), where observations of one component of a coupled model are allowed to directly impact the analysis of other components, sometimes fails to improve the analysis accuracy with an ensemble Kalman filter (EnKF) as compared with weakly coupled data assimilation (WCDA). It is well known that an observation’s area of infl...... hiện toàn bộ
Sensitivities of the NCEP Global Forecast SystemMonthly Weather Review - Tập 147 Số 4 - Trang 1237-1256 - 2019
Jih-Wang A. Wang, Prashant D. Sardeshmukh, Gilbert P. Compo, Jeffrey S. Whitaker, Laura Slivinski, Chesley McColl, Philip Pegion
AbstractAn important issue in developing a forecast system is its sensitivity to additional observations for improving initial conditions, to the data assimilation (DA) method used, and to improvements in the forecast model. These sensitivities are investigated here for the Global Forecast System (GFS) of the National Centers for Environmental Prediction (NCEP). Fo...... hiện toàn bộ
Global Optimization of an Analog Method by Means of Genetic AlgorithmsMonthly Weather Review - Tập 145 Số 4 - Trang 1275-1294 - 2017
Pascal Horton, Michel Jaboyedoff, Charles Obled
Abstract
Analog methods are based on a statistical relationship between synoptic meteorological variables (predictors) and local weather (predictand, to be predicted). This relationship is defined by several parameters, which are often calibrated by means of a semiautomatic sequential procedure. This calibration approach is fast, but has strong limit...... hiện toàn bộ
A First Evaluation of ERA-20CM over ChinaMonthly Weather Review - Tập 144 Số 1 - Trang 45-57 - 2016
Lu Gao, Matthias Bernhardt, Karsten Schulz, Xingwei Chen, Ying Chen, Meibing Liu
Abstract
As an important global data resource, reanalysis is widely applied for climate impact studies of the past several decades. For the first time, monthly mean temperature and monthly total precipitation derived from the newest generation reanalysis product—the ECMWF twentieth-century reanalysis dataset (ERA-20CM)—is quantitatively evaluated bas...... hiện toàn bộ
A Reanalysis of Ocean Climate Using Simple Ocean Data Assimilation (SODA)Monthly Weather Review - Tập 136 Số 8 - Trang 2999-3017 - 2008
James A. Carton, Benjamin S. Giese
Abstract
This paper describes the Simple Ocean Data Assimilation (SODA) reanalysis of ocean climate variability. In the assimilation, a model forecast produced by an ocean general circulation model with an average resolution of 0.25° × 0.4° × 40 levels is continuously corrected by contemporaneous observations with corrections estimated every 10 days....... hiện toàn bộ