Increasing endurance is a major challenge for battery-powered aerial vehicles. A method presented which makes use of an updraft around obstacles to decrease the power consumption fixed-wing unmanned vehicle. soaring flight controller has been developed that can autonomously soar while vehicle keeps its relative position moving object. Multiple simulations have performed analyse limitations unde...

The recent deployment of the Atmospheric Radiation Measurement Program (ARM) Mobile Facility at Graciosa Island, Azores, in the context of the Clouds, Aerosol and Precipitation in theMarine Boundary Layer (CAP-MBL) field campaign added the most extensive (19 months) and comprehensive dataset of marine boundary layer (MBL) clouds to date. Cloud occurrence is high (60%–80%), with a summertime min...

Aircraft and airborne cloud radar data are used to describe the vertical structure of the convective boundary layer (CBL) during cold-air outbreaks over Lake Michigan in January 2004. Two days with mesoscale cloud street structure and a day with cellular organization are contrasted. The radar reflectivity and vertical velocity structure of the CBL, as well as the radar-inferred topography of th...

The regime-dependence of aerosol-cloud interaction has recently been highlighted and explored using idealized cloud-resolving models in previous studies. We further utilized synergistic observations from satellites LiDARs to reinforce understandings this interaction, then examined clarified the regime dependence aerosol indirect effects. Results regional satellite retrievals confirm that clean ...

This study uses in situ measurements collected during the FireFlux field experiment to evaluate and improve the performance of the coupled atmosphere–fire model WRF-SFIRE. The simulation by WRF-SFIRE of the experimental burn shows that WRF-SFIRE is capable of providing realistic head-fire rate of spread and vertical temperature structure of the fire plume, and fire-induced surface flow and vert...

[1] This work examines the efficacy of various physically based approaches derived from one-dimensional adiabatic parcel model frameworks (a numerical model and a simplified parameterization) to parameterize the cloud droplet distribution characteristics for computing cloud effective radius and autoconversion rate in regional/global atmospheric models. Evaluations are carried out for integratio...