Results 261 to 270 of about 9,183 (293)

The role of soil moisture in the inland penetration of Indian monsoon low‐pressure systems

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We use the Advanced Weather Research and Forecasting model to examine the role of soil moisture in the inland penetration of Indian monsoon low‐pressure systems (LPSs). We find that LPSs penetrate deeply into India despite a dry land surface; however, their inland penetration is adversely affected when there is a reduction in the total surface heat ...
Akshay Deoras, Kieran M. R. Hunt, Andrew G. Turner   +2 more
wiley   +1 more source

Assessing the impact of model biases on subseasonal forecast skill

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Relaxation experiments where the nudging was performed towards bias‐corrected integrations of the same model display significantly improved skill at weeks 3 and 4, particularly in the northern extratropics. This indicates that there is a large potential for improving dynamical subseasonal forecasting skill by improved treatment of model biases.
Frédéric Vitart, Magdalena Balmaseda
wiley   +1 more source

Comparison of two numerical weather prediction models in simulating south foehn in the Alpine Rhine Valley

Quarterly Journal of the Royal Meteorological Society, EarlyView.
ICON outperforms COSMO in simulating a south foehn event in the Alpine Rhine Valley, with improved accuracy in temperature, wind speed, and foehn timing. This enhanced performance likely results from a more accurate representation of surface energy balance and gravity wave pattern on the lee side of the mountain.
Yue Tian, Julian Quimbayo Duarte, Shweta Singh, Juerg Schmidli   +3 more
wiley   +1 more source

Precise Masses Reveal that TOI-700 c is Low Density and TOI-700 d is Rocky

Gilbert E, Burt J, Barragán O, Siegel J, Mascareño AS, Silva A, Luque R, Rogers J, Lee E, Lopez E, Vanderburg A, Clement M, Youngblood A, Mamajek E, Sousa S, Cameron AC, Rodriguez J, Martin D, Arney G, Barclay T, Becker J, Colon K, Eisner N, Halverson S, Hord B, Kane S, Kreidberg L, Morley C, Mortier A, Nielsen L, Quintana E, Schlieder J, Suissa G, Triaud A, Trifonov T, Eylen VV.   +35 more
europepmc   +1 more source

Possible Global Magneto-Fluid Structure of the Stellar Convection Zone

Possible Global Magneto-Fluid Structure of the Stellar Convection Zone
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Nonlinear hydrodynamical models of stellar convective zones

Astrophysics and Space Science, 1986
Large-eddy simulation (LES) of turbulent convection is discussed in various versions (mixing-length theory, modal theory and spectral theory) in respect to the application to stellar convective zones. For the model construction, the non-local mixing-length formalism is suitable. However, for the determination of basic flow patterns and of mixing-length,
Wasaburo Unno, Masa-Aki Kondo
openaire   +1 more source

Solar and stellar convection zones

Computer Physics Reports, 1990
Abstract There are several important astrophysical questions that might be answered by numerical modelling. These involve the kinematic effects of motion on magnetic fields, the dynamics of magnetoconvection, the stucture and scale of convection and the global dynamo problem.
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Stellar Models with Isothermal Cores and Intermediate Convective Zones. II.

Publications of the Astronomical Society of Japan, 1957
Abstract Stellar models consisting of isothermal cores exhausted of hydrogen and convective zones with intermediate hydrogen content surrounded by hydrogen-rich radiative envelopes are constructed. Six sequences of models with specified values of log C are computed for a fixed ratio of molecular weight of the core to that of the envelope.
Zyuiti Hitotuyanagi, Kazuo Suda
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On the Theoretical Treatment of Stellar Convection Zones

Publications of the Astronomical Society of Australia, 1970
The theory of stellar convection zones has met three difficult problems. They are non-linearity, non-locality, and non-greyness of radiative transport. Non-linearity is inherent in turbulence. Non-locality is due to the nature of convection, that larger eddies are apt to be more unstable as indicated by the fourth-power dependence of the Rayleigh ...
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Convective penetration into stellar radiation zones

2008
We recall the evidence for convective penetration exhibited by geophysical fluids, laboratory experiments and computer simulations. A simple model is deduced from these observations, which serves to establish a relation between the subadiabatic extent of a convective region and the velocity of the penetrating motions.
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