Journal ArticleDOI
Scale-Dependent Models for Atmospheric Flows
Reads0
Chats0
TLDR
In this paper, the authors discuss the most prominent scales and associated scale-depen-environments of atmospheric flows, including internal gravity waves, baroclinic instabilities, Rossby waves, cloud formation and moist convection, cyclonic weather patterns, hurricanes, and a variety of interacting waves in the tropics.Abstract:
Atmospheric flows feature length scales from 10−5 to 105 m and timescales from microseconds to weeks or more. For scales above several kilometers and minutes, there is a natural scale separation induced by the atmosphere's thermal stratification, together with the influences of gravity and Earth's rotation, and the fact that atmospheric-flow Mach numbers are typically small. A central aim of theoretical meteorology is to understand the associated scale-specific flow phenomena, such as internal gravity waves, baroclinic instabilities, Rossby waves, cloud formation and moist convection, (anti-)cyclonic weather patterns, hurricanes, and a variety of interacting waves in the tropics. Single-scale asymptotics yields reduced sets of equations that capture the essence of these scale-specific processes. For studies of interactions across scales, techniques of multiple-scales asymptotics have received increasing recognition in recent years. This article recounts the most prominent scales and associated scale-depen...read more
Citations
More filters
Book ChapterDOI
Clouds and Aerosols
Olivier Boucher,David A. Randall,Paulo Artaxo,Christopher S. Bretherton,Graham Feingold,Piers M. Forster,Veli-Matti Kerminen,Yutaka Kondo,Hong Liao,Ulrike Lohmann,Philip J. Rasch,Sathianeson Satheesh,Steven C. Sherwood,Bjorn Stevens,Xiaoye Zhang +14 more
Journal ArticleDOI
The hydrology of the humid tropics
Ellen Wohl,Ana P. Barros,Nathaniel A. Brunsell,Nick A. Chappell,Michael T. Coe,Thomas W. Giambelluca,Steven T. Goldsmith,Russell S. Harmon,Jan M. H. Hendrickx,James O. Juvik,Jeffrey J. McDonnell,Fred L. Ogden +11 more
TL;DR: In this paper, it is argued that understanding of the key hydrological interactions in the humid tropics remains limited, and a vision of future research designed to address these shortcomings is outlined.
Journal ArticleDOI
The physics of climate variability and climate change
Michael Ghil,Valerio Lucarini +1 more
TL;DR: This paper reviewed the observational evidence on climate phenomena and the governing equations of planetary-scale flow, as well as presenting the key concept of a hierarchy of models as used in the climate sciences.
Journal ArticleDOI
Stochastic climate theory and modeling
TL;DR: Stochastic methods are used as subgrid-scale parameterizations for model error representation, uncertainty quantification, data assimilation, and ensemble prediction in weather and climate models as mentioned in this paper.
Journal ArticleDOI
Turbulent superstructures in Rayleigh-Bénard convection.
TL;DR: Numerical simulations of turbulent convection in fluids at different Prandtl number levels suggest a scale separation and thus the existence of a simplified description of the turbulent superstructures in geo- and astrophysical settings.
References
More filters
Book
Atmosphere-Ocean Dynamics
TL;DR: In this article, the authors describe how the Ocean-Atmosphere system is driven by transfer of properties between the atmosphere and the ocean. But they do not consider the effects of side boundaries.
Book
Geophysical Fluid Dynamics
TL;DR: In this article, the authors propose a quasigeostrophic motion of a Stratified Fluid on a Sphere (SFL) on a sphere, which is based on an Inviscid Shallow-Water Theory.
Journal ArticleDOI
Quasi-geostrophic motions in the equatorial area
TL;DR: In this article, a single layer of homogeneous incompressible fluid with free surface is treated, where the Coriolis parameter is assumed to be proportional to the latitude, and a strong east-west current was formed along the equator.
Journal ArticleDOI
Convectively Coupled Equatorial Waves: Analysis of Clouds and Temperature in the Wavenumber–Frequency Domain
TL;DR: In this article, a wavenumber-frequency spectrum analysis is performed for all longitudes in the domain 158S−158N using a long (;18 years) twice-daily record of satellite-observed outgoing longwave radiation (OLR), a good proxy for deep tropical convection.
Book ChapterDOI
On the distribution and continuity of water substance in atmospheric circulations
TL;DR: In this paper, the conservation and distribution of water substance in atmospheric circulations are considered within a frame of continuity principles, model air flows, and models of microphysical processes, where the simplest considerations of precipitation involve its vertical distribution in an updraft column, where condensate appears immediately as precipitation with uniform terminal fallspeed.