Zenteno-Quinteros, Bea Moya, Pablo S.
Published in
Frontiers in Physics
There is wide observational evidence that electron velocity distribution functions (eVDF) observed in the solar wind generally present enhanced tails and field-aligned skewness. These properties may induce the excitation of electromagnetic perturbations through the whistler heat-flux instability (WHFI), that may contribute to a non-collisional regu...
Valade, Laurent Ekedahl, Annika Ghendrih, Philippe Sarazin, Yanick Asahi, Yuuichi Bufferand, Hugo CASCHERA, Elisabetta Di Cintio, Pierfrancesco Ciraolo, Guido Dif-Pradalier, Guilhem
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Hotspot generation by lower-hybrid (LH) launchers is found to be governed by a resonance in the plasma electric field response to the external drive. The kinetic analysis in 1D-1V in the parallel direction allows one to compute the amplification effect for small amplitude of the external drive. The resonant Lorentzian response distorts the distribu...
LHOMME, Jean-Paul Moussa, Roger
The Budyko functions B-1(Phi(p))are dimensionless relationships relating the ratio E/P (actual evaporation over precipitation) to the aridity index Phi(p) = E-p/P (potential evaporation over precipitation). They are valid at catchment scale with E-p generally defined by Penman's equation. The complementary evaporation (CE) relationship stipulates t...
Maronga, B. Hartogensis, O.K. Raasch, S. Beyrich, F.
We conduct a high-resolution large-eddy simulation (LES) case study in order to investigate the effects of surface heterogeneity on the (local) structure parameters of potential temperature C2T and specific humidity C2q in the convective boundary layer (CBL). The kilometre-scale heterogeneous land-use distribution as observed during the LITFASS-200...
Chrysoulakis, N. Lopes, M. San José, R. Grimmond, C.S.B. Jones, M.B. Magliulo, V. Klostermann, J.E.M. Synnefa, A. Mitraka, Z. Castro, E.
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Urban metabolism considers a city as a system with flows of energy and material between it and the environment. Recent advances in bio-physical sciences provide methods and models to estimate local scale energy, water, carbon and pollutant fluxes. However, good communication is required to provide this new knowledge and its implications to endusers...
McNider, R.T. Steeneveld, G.J. Holtslag, A.A.M. Pielke sr., R.A. Mackaro, S. Pour Biazar, A. Walters, J. Nair, U. Christy, J.
One of the most significant signals in the thermometer-observed temperature record since 1900 is the decrease in the diurnal temperature range over land, largely due to rising of the minimum temperatures. Generally, climate models have not well replicated this change in diurnal temperature range. Thus, the cause for night-time warming in the observ...
van de Wiel, B.J.H. Moene, A.F. Jonker, H.J.J. Baas, P. Basu, S. Donda, J.M.M. Sun, J. Holtslag, A.A.M.
The collapse of turbulence in the nocturnal boundary layer is studied by means of a simple bulk model that describes the basic physical interactions in the surface energy balance. It is shown that for a given mechanical forcing, the amount of turbulent heat that can be transported downward is limited to a certain maximum. In the case of weak winds ...
Lu, L. Venus, V. Skidmore, A.K. Wang, T. Luo, G.
The retrieval of land-surface temperature (LST) from thermal infrared satellite sensor observations is known to suffer from cloud contamination. Hence few studies focus on LST retrieval under cloudy conditions. In this paper a temporal neighboring-pixel approach is presented that reconstructs the diurnal cycle of LST by exploiting the temporal doma...
Ouwersloot, H.G. Vilà-Guerau de Arellano, J. van Heerwaarden, C.C. Ganzeveld, L.N. Krol, M.C. Lelieveld, J.
Using a Large-Eddy Simulation model, we have systematically studied the inability of boundary layer turbulence to efficiently mix reactive species. This creates regions where the species are accumulated in a correlated or anti-correlated way, thereby modifying the mean reactivity. We quantify this modification by the intensity of segregation, IS, a...
Foken, T. Mauder, M. Liebethal, C. Wimmer, F. Beyrich, F. Leps, J.P. Raasch, S. Debruin, H.A.R. Meijninger, W.M.L. Bange, J.
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In the first part, this paper synthesises the main results from a series of previous studies on the closure of the local energy balance at low-vegetation sites during the LITFASS-2003 experiment. A residual of up to 25% of the available energy has been found which cannot be fully explained either by the measurement uncertainty of the single compone...
