29 research outputs found
The Specific Heat of a Trapped Fermi Gas: an Analytical Approach
Full text linkWe find an analytical expression for the specific heat of a Fermi gas in a
harmonic trap using a semi-classical approximation. Our approximation is valid
for kT>hw and in this range it is shown to be highly accurate. We comment on
the semi-classical approximation, presenting an explanation for this high
accuracy.Comment: To be published in Physics Letters A. 7 pages (RevTex) and 2 figures
(postscript
Assessing the influence of groundwater and land surface scheme in the modelling of land surface-atmosphere feedbacks over the FIFE area in Kansas, USA
Get PDFClimate change impacts on groundwater hydrology – where are the main uncertainties and can they be reduced?
Full text linkFire management and the nesting of Athene cunicularia (Aves, Strigidae) in grasslands in central Cerrado, Brazil
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Land-surface modelling in hydrological perspective
No full textInternational audienceA comprehensive review of energy-based land-surface modelling, as seen from a hydrological perspective, is provided. We choose to focus on energy-based approaches, because in comparison to the traditional potential evapotranspiration models, these approaches allow for a stronger link to remote sensing and atmospheric modelling. New opportunities for evaluation of distributed land-surface models through application of remote sensing are discussed in detail, and the difficulties inherent in various evaluation procedures are presented. Remote sensing is the only source of distributed data at scales that correspond to hydrological modelling scales. Finally, the dynamic coupling of hydrological and atmospheric models is explored, and the future perspectives of such efforts are discussed
Land-surface modelling in hydrological perspective:a review
No full textInternational audienceThe purpose of this paper is to provide a review of the different types of energy-based land-surface models (LSMs) and discuss some of the new possibilities that will arise when energy-based LSMs are combined with distributed hydrological modelling. We choose to focus on energy-based approaches, because in comparison to the traditional potential evapotranspiration models, these approaches allow for a stronger link to remote sensing and atmospheric modelling. New opportunities for evaluation of distributed land-surface models through application of remote sensing are discussed in detail, and the difficulties inherent in various evaluation procedures are presented. Finally, the dynamic coupling of hydrological and atmospheric models is explored, and the perspectives of such efforts are discussed
