An experiment was performed in which the dispersion of an aerosol, generated from a point source using aviation smoke oil, was measured under weakly unstable and neutral conditions at the mouth of Red Butte Canyon in Utah. The objectives of this experiment were to determine how atmospheric stability affects near-ground dispersion of passive scalars and to further understand the underlying physi...

Question UCR -Carter GT -Russell MCNC -Arunachulam Reviewer's Comments 1 What is the hypothesis that we want to test? It is possible to develop a means to quantify differences in ozone impacts of the major classes of emitted VOCs sufficiently well that these relative ozone impact quantifications can be effectively used in VOC regulations to reduce ambient ozone levels. For this to be the case, ...

The leakage of hydrogen in a room is key issue safety, and ventilation plays an important role dispersion. usually builds thermal stratification environment due to the low temperature liquid or throttling effect. This study attempts develop fast-computational theoretical model dispersion motion indoor based on classical buoyant jet carry out experimental verify model. research results show that...

Vertical aerosol profiles were directly measured over the city of Milan during three years (2005–2008) of field campaigns. An optical particle counter, a portable meteorological station and a miniaturized cascade impactor were deployed on a tethered balloon. More than 300 vertical profiles were measured, both in winter and summer, mainly in conditions of clear, dry skies. The mixing height was ...

The temporal evolution and spatial structure of the aerosol layer (AL) height as observed with an airborne downlooking lidar over the Swiss Alps were investigated with a three-dimensional mesoscale numerical model and a particle dispersion model. Convective boundary-layer (CBL) heights were derived from the mesoscale model output, and the behaviour of surface-released particles was investigated...

[1] An idealized global climate model is used to explore the response of the climate to a wide range of dust radiative properties and dust layer heights. The top-of-the-atmosphere (TOA) shortwave forcing becomes more negative as the broadband shortwave single scattering albedo increases and the broadband shortwave asymmetry parameter decreases, but the sensitivity is highly dependent on the loc...

OBJECTIVE To analyze specimens dispersion in a population of Tarebia granifera and its relationship with the change of morphometric parameters. METHODS Two samplings by parcels including two types of substrata in opposite aggregation conditions were carried out, and the specimen abundance was compared between both samplings and substrata. The samples were stratified into classes according to ...

We present a new joint analysis of pulsar dispersion measures and diffuse Hα emission in the Milky Way, which we use to derive the density, pressure and filling factor of the thick disk component of the warm ionised medium (WIM) as a function of height above the Galactic disk. By excluding sightlines at low Galactic latitude that are contaminated by H II regions and spiral arms, we find that th...