Author: Publisher: National Academies
ISBN:
Category : Atmosphere
Languages : en
Pages : 402
Book Description
Proceedings of the First National Workshop on the Global Weather Experiment
Author: Publisher: National Academies
ISBN:
Category : Atmosphere
Languages : en
Pages : 402
Book Description
Scientific and Technical Aerospace Reports
Author: Diagnostics for and Evaluations of New Physical Parameterization Schemes for Global NWP Models
Author: Chien-Hsiung YangPublisher:
ISBN:
Category : Atmospheric models
Languages : en
Pages : 284
Book Description
The procedures and results of a study undertaken to evaluate and assess the impacts of three new parameterization schemes for the GL global spectral model as a 3-4 day range forecast model are described. The tree parameterization schemes are one each for the boundary-layer physics, moist convection and heating due to solar and terrestrial radiations. These schemes are incorporated either singly or jointly into a rhomboidal-30, 12-layer global spectral model for four-day simulations using FGGE III- a data as input. Evaluation and assessment are made on the basis of two kinds of global statistics: mean and root-mean-square errors, and on their magnitudes and distributions. The statistics are generated for both the primary, that is, prognostic, variables, and supplementary variables such as zonal-mean and zonal-eddies energy densities. The new moist convection scheme has been found to increase convective activity significantly and maintain it throughout the four-day period. It also warms and dries the middle troposphere, but produces rainfall far in excess of the climatology. The radiation parameterization has been found to cool the atmosphere and reduce its specific humidity. It counterbalances enhanced heating and moistening brought about by the new boundary-layer and moist convection schemes and eliminates the systematic warming of the old model.
Diagnostics for and Evaluations of New Physical Parameterization Schemes for Global NWP Models
Author: Topics in Geophysical Fluid Dynamics: Atmospheric Dynamics, Dynamo Theory, and Climate Dynamics
Author: M. GhilPublisher: Springer Science & Business Media
ISBN: 1461210526
Category : Science
Languages : en
Pages : 505
Book Description
The vigorous stirring of a cup of tea gives rise, as we all know, to interesting fluid dynamical phenomena, some of which are very hard to explain. In this book our "cup of tea" contains the currents of the Earth's atmosphere, oceans, mantle, and fluid core. Our goal is to under stand the basic physical processes which are most important in describing what we observe, directly or indirectly, in these complex systems. While in many respects our understanding is measured by the ability to predict, the focus here will be on relatively simple models which can aid our physical intuition by suggesting useful mathematical methods of investiga tion. These elementary models can be viewed as part of a hierarchy of models of increasing complexity, moving toward those which might be use fully predictive. The discussion in this book will deal primarily with the Earth. Interplanetary probes of Venus, Mars, Jupiter and Saturn have revealed many exciting phenomena which bear on geophysical fluid dynamics. They have also enabled us to see the effect of changing the values of certain parameters, such as gravity and rotation rate, on geophysical flows. On the other hand, satellite observations of our own planet on a daily and hourly basis have turned it into a unique laboratory for the study of fluid motions on a scale never dreamt of before: the motion of cyclones can be observed via satellite just as wing tip vortices are studied in a wind tunnel.
Environmental Research Papers
Author: Publisher:
ISBN:
Category : Environmental geology
Languages : en
Pages : 382
Book Description
Earth Resources
Author: Publisher:
ISBN:
Category : Astronautics in earth sciences
Languages : en
Pages : 824
Book Description
NASA Reference Publication
Author: Nimbus-7 Data Product Summary
Author: Publisher:
ISBN:
Category : Artificial satellites
Languages : en
Pages : 120
Book Description
Author: