A parameterization for cloud processing is presented that calculates activation of aerosol particles to cloud drops, cloud drop size, and pH-dependent aqueous phase sulfur chemistry. The parameterization is implemented in the global aerosol-climate model ECHAM5-HAM. The cloud processing parameterization uses updraft speed, temperature, and aerosol size and chemical parameters simulated by ECHAM...

Energy demand continues to increase in line with the increasing population which results high energy consumption. Utilization of biomass waste such as coconut shells an alternative source is very beneficial, because it can reduce dependence on fuel oil. One technologies that be used produce gasification. The purpose this study was determine character gasification process using a suction type up...

Oasis self-supporting mechanisms due to oasis breeze circulation (OBC) are proposed and simulated numerically in this study using a coupled mesoscale and land-surface model. Excessive evaporation from the oasis makes the oasis surface colder than the surrounding desert surface. The sensible heat-flux gradient from oasis to surrounding desert drives the OBC with downdraft over the oasis and updr...

Measurements of cloud condensation nuclei (CCN) concentrations (cm−3) at five levels of supersaturation between 0.2–1%, together with remote sensing profiling and aerosol size distributions, were performed at an urban background site of Athens during the Hygroscopic Aerosols to Cloud Droplets (HygrA-CD) campaign. The site is affected by local emissions and long-range transport, as portrayed by ...

This study examined the roles of heat fluxes from Kuroshio Current in enhancing a frontal convective rainband associated with an extratropical cyclone that brought record-breaking heavy rainfall to Miyake Island, Japan, January 2017. A simulation (control experiment) and sensitivity experiments without sensible latent were conducted using regional cloud-resolving model. The developed along non-...

The use of solar chimneys for energy production was suggested more than 100 years ago. Unfortunately, this technology has not been realized on a commercial scale, in large part due to the high cost of erecting tall towers using traditional methods of construction. Recent works have suggested a radical decrease in tower cost by using an inflatable self-supported tower consisting of stacked toroi...