Atmospheric Science Letters
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Combining radar and rain gauge rainfall estimates using conditional mergingAbstract The Hydrologist's traditional tool for measuring rainfall is the rain gauge. Rain gauges are relatively cheap, easy to maintain and provide a direct and suitably accurate estimate of rainfall at a point. What rain gauges fail to capture well is the spatial variability of rainfall with time, an important aspect for the credible modelling of a catchment's res... ...
Atmospheric Science Letters - Tập 6 Số 1 - Trang 19-22 - 2005
Residual kriging analysis of airborne measurements: application to the mapping of atmospheric boundary‐layer thermal structures in a mountain valleyAbstract Residual kriging (RK) is applied to data from measurements performed with an instrumented motorglider in an Alpine Valley, where a coupled lake and valley wind develops. Results provide an insight into a typical mean vertical structure of the valley boundary layer, displaying a rather shallow convective mixed layer, surmounted by a deep stable la...
Atmospheric Science Letters - Tập 14 Số 2 - Trang 79-85 - 2013
The Met. Office – fit for the 21st Century?
Atmospheric Science Letters - Tập 1 - Trang 108-114 - 2000
Potential energy for slantwise parcel motionAbstract Two formulations for the potential energy for slantwise motion are compared: one which applies strictly only to two‐dimensional flows (SCAPE) and a three‐dimensional formulation based on a Bernoulli equation. The two formulations share an identical contribution from the vertically integrated buoyancy anomaly and a contribution from different Coriolis terms.... ...
Atmospheric Science Letters - Tập 1 - Trang 56-61 - 2000
Simulation of the Asian summer monsoon in five European general circulation modelsAbstract A comparison is made of the mean monsoon climatology in five different general circulation models (GCMs) which have been used by the participants of a project, funded by the European Union, entitled Studies of the Influence, Hydrology and Variability of the Asian summer monsoon (SHIVA). The models differ considerably, in horizontal and vertical resolution, ... ...
Atmospheric Science Letters - Tập 1 - Trang 37-55 - 2000
Gulf Stream forcing of the winter North Atlantic oscillationAbstract Using observational datasets and coupled model simulations, it is shown that a surface heat flux pattern associated with Gulf Stream variability plays a role in forcing the winter North Atlantic oscillation. It is suggested that by monitoring the Gulf Stream, it may be possible to produce a useful long‐range NAO forecast. By analysing surface heat flux patt... ...
Atmospheric Science Letters - Tập 5 - Trang 57-64 - 2004
Tropical Atlantic variability in a coupled GCMAbstract Tropical Atlantic Variability (TAV) is simulated in a coupled GCM. The TAV seems to be consistent with a dipole mode that involves both surface and subsurface oceanic dynamics. The poor correlation of the tropical North and South Atlantic SST is suggested to be distorted by the presence of a symmetric tropical Atlantic mode. Copyright © 2000 Royal Meteorolo...
Atmospheric Science Letters - Tập 1 - Trang 26-36 - 2000
Models of the predictability of a simple nonlinear dynamical systemAbstract Chaotic nonlinear low order systems are often regarded as paradigms of the atmospheric behaviour, not least because of their limited predictability. In this paper, the predictability of a forced nonlinear system proposed by Lorenz is examined. The system is a compelling heuristic model of the mid‐latitude global circulation; it exhibits limited predictabili... ...
Atmospheric Science Letters - Tập 3 - Trang 104-111 - 2002
Velocity spectra over different terrainsAbstract Power spectra of longitudinal and vertical components of wind velocity have been measured over a variety of terrain types: uniform, inhomogeneous and urban. The result shows that the spectral shapes and peaks of u ‐spectra are sensitive to local terrain, while those of w ‐spectra are not affected by change...
Atmospheric Science Letters - Tập 2 - Trang 94-103 - 2001
A standard test for AGCMs including their physical parametrizations: I: the proposalAbstract To assist model intercomparison and development of a set of eight numerical experiments is proposed as a test‐bed for the interaction of dynamics and physical parameterizations in atmospheric GCMs. The framework for the experiments is that of an aqua‐planet and the prescribed sea‐surface temperatures (SSTs) are highly idealized. Copyright © 2001 Royal Meteo...
Atmospheric Science Letters - Tập 1 - Trang 125-135 - 2000
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