Results 31 to 40 of about 20,994 (240)

MM5 v3.6.1 and WRF v3.5.1 model comparison of standard and surface energy variables in the development of the planetary boundary layer [PDF]

Geoscientific Model Development, 2014
Air quality forecasting requires atmospheric weather models to generate accurate meteorological conditions, one of which is the development of the planetary boundary layer (PBL).
C.-S. M. Wilmot, B. Rappenglück, X. Li, G. Cuchiara   +3 more
doaj   +1 more source

Numerical Simulations with MM5 3DVAR Initialization

Terrestrial, Atmospheric and Oceanic Sciences, 2002
The recently developed MM5 three-dimensional variational (3DVAR) assimilation system at NCAR has been used to investigate influences of ingested sounding and ship observation data on numerical simulations of severe weather in the vicinity of Taiwan.
Wei Huang, Ching Yuang Huang, Ying-Hwa Kuo   +2 more
openaire   +3 more sources

The role of atmospheric boundary layer-surface interactions on the development of coastal fronts [PDF]

Annales Geophysicae, 2007
Frictional convergence and thermal difference between land and sea surface are the two surface conditions that govern the intensity and evolution of a coastal front.
D. Malda, D. Malda, J. Vilà-Guerau de Arellano, W. D. van den Berg, I. W. Zuurendonk   +4 more
doaj   +1 more source

Personalised Search Time Prediction using Markov Chains [PDF]

, 2017
For improving the effectiveness of Interactive Information Retrieval (IIR), a system should minimise the search time by guiding the user appropriately. As a prerequisite, in any search situation, the system must be able to estimate the time the user will
Azzopardi, Leif, Fuhr, Norbert, Maxwell, David, Tran, Vu   +3 more
core   +1 more source

Evaluating the performance of two surface layer schemes for the momentum and heat exchange processes during severe haze pollution in Jing-Jin-Ji in eastern China [PDF]

Atmospheric Chemistry and Physics, 2018
The turbulent flux parameterization schemes in the surface layer are crucial for air pollution modeling. There have been some deficiencies in the prediction of air pollutants by atmosphere chemical models, which is closely related to the uncertainties of
Y. Peng, Y. Peng, H. Wang, H. Wang, Y. Li, C. Liu, T. Zhao, X. Zhang, Z. Gao, Z. Gao, T. Jiang, H. Che, M. Zhang   +12 more
doaj   +1 more source

The initial conditions of star formation in the Ophiuchus main cloud: Kinematics of the protocluster condensations [PDF]

, 2007
The earliest phases of clustered star formation and the origin of the stellar initial mass function (IMF) are currently much debated. In order to constrain the origin of the IMF, we investigated the internal and relative motions of starless condensations
A. Belloche, Adams, Adams, Adams, Adams, André, Basu, Bate, Belloche, Belloche, Bertoldi, Bonnell, Bonnell, Bonnell, Bonnell, Bontemps, Bontemps, Brandner, Caselli, Chabrier, Ciolek, Di Francesco, Duchêne, Elmegreen, Encrenaz, F. Motte, Foster, Goodman, Goodman, Gottlieb, Greene, Jayawardhana, Johnstone, Kirk, Klessen, Klessen, Kramer, Kroupa, Krumholz, Lada, Larson, Larson, Leung, Lombardi, Loren, Loren, Lovas, Luhman, Motte, Motte, Motte, Myers, Myers, N. Peretto, Nakano, Nutter, Padoan, Peretto, Peretto, Ph. André, Pickett, Price, Salpeter, Shu, Shu, Shu, Stamatellos, Stanke, Stutzki, Testi, Troland, Walsh, Walsh, Wilking, Zeng   +74 more
core   +2 more sources

Regional modeling of atmospheric mercury: impact of meteorological variables

E3S Web of Conferences, 2013
The atmospheric mercury concentration in Europe was simulated with the regional atmospheric chemistry transport model CMAQ-Hg. Two sets of meteorological fields, one from MM5 and one from COSMO-CLM (CCLM) were used to drive the model.
Matthias V., Aulinger A., Bieser J., Quante M.   +3 more
doaj   +1 more source

Mesoscale modeling of lake effect snow over Lake Erie – sensitivity to convection, microphysics and the water temperature [PDF]

Advances in Science and Research, 2010
Lake effect snow is a shallow convection phenomenon during cold air advection over a relatively warm lake. A severe case of lake effect snow over Lake Erie on 24 December 2001 was studied with the MM5 and WRF mesoscale models.
N. E. Theeuwes, G. J. Steeneveld, F. Krikken, A. A. M. Holtslag   +3 more
doaj   +1 more source

Implementation of the CIP as the Advection Solver in the MM5

Monthly Weather Review, 2003
Abstract A semi-Lagrangian-type advection scheme, cubic-interpolated pseudoparticle (CIP) method is implemented to the fifth-generation Pennsylvania State University–NCAR Mesoscale Model (MM5, version 3.4). A dimensional splitting CIP algorithm, with spatial third-order and temporal second-order accuracy, is derived to compute the advection in the MM5.
Takashi Yabe, Xindong Peng, Keiji Tani, Feng Xiao   +3 more
openaire   +2 more sources

Verification and Sensitivity Experiments for the WISP94 MM5 Forecasts

Weather and Forecasting, 1997
Abstract A statistical verification of real-time forecasts from the Pennsylvania State University–National Center for Atmospheric Research Mesoscale Model version 5 (MM5) examines several model biases noted in numerical forecasts prepared for the Winter Icing and Storms Project’s 1994 field experiment.
Kevin W. Manning, Christopher A. Davis
openaire   +2 more sources