Precipitation extremes will generally intensify in response to a warming climate. This robust fingerprint of climate change is particular concern, resulting heavy rainfall and devastating floods. Often this intensification explained as consequence the Clausius–Clapeyron law warmer world, under constant relative humidity. Here, based on an ensemble CMIP5 global models high-resolution regional si...

The vapor pressures of ten polycyclic aromatic hydrocarbons, ranging in molecular weight from (152 to 252) g ·mol, were measured using the Knudsen effusion technique in the temperature range of (297 to 432) K. These compounds included those for which there were few or conflicting data in the literature: acenaphthylene, acenaphthene, fluoranthene, benzo[a]phenanthrene, 9,10-benzophenanthrene, be...

The elastocaloric effect in the vicinity of the martensitic transition of a Cu-Zn-Al single crystal has been studied by inducing the transition by strain or stress measurements. While transition trajectories show significant differences, the entropy change associated with the whole transformation (DeltaS_(t)) is coincident in both kinds of experiments since entropy production is small compared ...

A high-pressure phase transition in iron free MgSiO3 perovskite, the most abundant Earth forming mineral phase, was discovered and reported in 2003-2004. Here, we summarize our theoretical and computational studies on this phase transition and on the physical properties of the newly found post-perovskite phase. The theoretical approach is based on density functional theory and on the plane-wave...

A general solution for the slope of a fusion curve is presented. It is not the Clausius-Clapeyron equation which is a special case for one-component systems. The connection between fusion curve slope and crystal/liquid buoyancy is obscure in multicomponent systems even though the slopes of fusion curves for any given composition are always well defined. The olivine flotation hypothesis at high ...

Under certain approximations, the Clapeyron equation can be integrated to yield a simple exponential relation giving saturation vapor pressure over condensed phase as function of temperature. The derivation usually assumes that behaves an ideal gas with constant specific heat, and fluid also has heat. In addition, volume is neglected in comparison volume. this case, separable readily integrable...

In this Letter we present a calculation of the temperature-pressure phase diagram of Si in a range of pressures covering from -5 to 20 GPa and temperatures up to the melting point. The phase boundaries and triple points between the diamond, liquid, beta-Sn, and Si34 clathrate phases are reported. We have employed efficient simulation techniques to calculate free energies and to numerically inte...