Atmospheric Science Letters

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Neural network solution for temperature profile retrieval from infrared spectra with high spectral resolution
Atmospheric Science Letters - Tập 5 - Trang 1-11 - 2004
K.G. Gribanov, V.I. Zakharov
AbstractA method based on artificial neural network for atmospheric temperature profile retrieval from spectra measured by nadir viewing high resolution Fourier transform spectrometers is presented. Very fast retrieval of temperature profile is approached. Impact of instrument noise on the retrieval results is considered. Copyright © 2003 Royal Meteorological Socie...... hiện toàn bộ
Constraints on the temperature sensitivity of global soil respiration from the observed interannual variability in atmospheric CO2
Atmospheric Science Letters - Tập 2 - Trang 114-124 - 2001
J Luterbacher, E Xoplaki, D Dietrich, P.D Jones, T.D Davies, D Portis, J.F Gonzalez-Rouco, H von Storch, D Gyalistras, C Casty, H Wanner
AbstractCarbon cycle feedbacks have been shown to be very important in predicting climate change over the next century. The response of the terrestrial carbon cycle to climate change depends on the competition between increased respiration due to warmer temperatures and increased uptake due to elevated CO2levels. Whether the terrestrial carbon ...... hiện toàn bộ
Simulation of the Asian summer monsoon in five European general circulation models
Atmospheric Science Letters - Tập 1 - Trang 37-55 - 2000
G.M. Martin, K. Arpe, F. Chauvin, L. Ferranti, K. Maynard, J. Polcher, D.B. Stephenson, P. Tschuck
AbstractA 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, ...... hiện toàn bộ
On solitary wave mediated heat exchange in the Antarctic boundary layer
Atmospheric Science Letters - Tập 4 - Trang 1-14 - 2003
J.M. Rees, B. Koprov, V. Koprov, W.B. Zimmerman
AbstractThe adiabatic assumption that the vertical velocity can be estimated from the displacement of isotherms is examined for solitary wave events propagating in the stable boundary layer overlying an Antarctic ice shelf. Implications for the mathematical modelling of such waves when this assumption is invalid are discussed. Copyright © 2003 Royal Meteorological ...... hiện toàn bộ
Models of the predictability of a simple nonlinear dynamical system
Atmospheric Science Letters - Tập 3 - Trang 104-111 - 2002
Manuel Pulido
AbstractChaotic 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...... hiện toàn bộ
A standard test for AGCMs including their physical parametrizations: I: the proposal
Atmospheric Science Letters - Tập 1 - Trang 125-135 - 2000
Wenyi Zhong, Joanna D. Haigh
AbstractTo 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...
Simulations of observed interannual variability of tropical cyclone formation east of Australia
Atmospheric Science Letters - Tập 4 - Trang 28-40 - 2003
Kevin J.E Walsh, Jozef Syktus
AbstractA modelling system comprising a regional climate model nested within a GCM is used to simulate the observed interannual variability of tropical cyclone formation off the east coast of Australia. The model's interannual variability of cyclone formation is weaker than that observed, with shortcomings in the model's simulation of vertical wind shear the likely...... hiện toàn bộ
A method to assess the variation of urban canyon geometry from sky view factor transects
Atmospheric Science Letters - Tập 2 - Trang 32-38 - 2001
M.H Al-Jiboori, Yumao Xu, Yongfu Qian
AbstractIt is now possible to generate large quantities of sky view factor (SVF) values due to advances in digital techniques for calculating SVF from hemispherical images. Coupling image acquisition with Global Positioning System (GPS) data now enables transects to be accurately placed, enabling site‐specific SVF analysis in relation to street geometry. This paper...... hiện toàn bộ
Gulf Stream forcing of the winter North Atlantic oscillation
Atmospheric Science Letters - Tập 5 - Trang 57-64 - 2004
Peili Wu, Mark J. Rodwell
AbstractUsing 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...... hiện toàn bộ
Spectral differences between a single gravity shear wave and a continuous superposition of modes
Atmospheric Science Letters - Tập 3 - Trang 94-102 - 2002
David P Brown, Andrew C Comrie
AbstractA continuous superposition of gravity waves, propagating upward in a shearing background wind, is analyzed. Starting from the gravity wave equations, it is proven, analytically and numerically, that a uniform spectrum has a resultant Doppler‐shifted power spectrum with a −3 power law at large vertical wavenumber contrasting with the −1 power law that charac...... hiện toàn bộ
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