introduction numerous studies have demonstrated the relationship between the amount of co2 in the atmosphere and climate change. in this respect, developed countries have an undeniable role and cause serious damage to earth environment throughout the world. ipcc’ forth evaluation report implies that adding greenhouse gases to the atmosphere during recent decades prevents the heat rays to emit w...

[1] The stability of the glacial thermohaline circulation (THC) with respect to North Atlantic freshwater input is examined using a global ocean general circulation model. It is found that the quasi-equilibrium hysteresis behaviour is much less pronounced under glacial conditions than under present-day conditions, and the existence of multiple equilibria requires an anomalous freshwater inflow....

This report summarizes the progress and accomplishments made on Focused Effort No. 1 by the CWO-CEWES group at The Ohio State University (OSU) for the CEWES MSRC-CWO project under the DoD HPCMP during Year 2 (April 1, 1997 March 31, 1998). This focused effort concentrates on the physics and coupling of circulation, wave and sediment codes for coastal region dynamics. The implementation and comp...

The posterior circulation is part of the brain circulation that is subject to stroke. Strokes which involve the posterior circulation account for approximately 25% of all ischemic strokes, and about 10-20% of all hemorrhagic strokes. While the mortality rate from ischemic strokes in posterior circulation could be as low as 4%, the cerebellar and pontine hemorrhages carry a mortality rate close ...

[1] Abstract: We predict plate motions from a comprehensive inversion of theoretical estimates of tectonic forces in order to evaluate the relative importance of these and the uncertainties of such models. Plate-driving forces from the mantle are calculated using global flow models that are driven by tomography and subduction-derived density fields. Observed and predicted plate velocities agree...

climate change is found to be the most important global issue in the 21st century, so to monitor its trend is of great importance. atmospheric general circulation models because of their large scale computational grid are not able to predict climatic parameters on a point scale, so small scale methods should be adapted. among downscaling methods, statistical methods are used as they are easy to...