A method is presented by which combined S-band polarimetric weather radar and UHF wind profiler observations of precipitation can be used to extract the properties of liquid phase hydrometeors and the vertical velocity of the air through which they are falling. Doppler spectra, which contain the air motion and/or fall speed of hydrometeors, are estimated using the vertically pointing wind profi...

We report the discovery for the first time of diatom frustules in a carbonaceous meteorite that fell in the North Central Province of Sri Lanka on 29 December 2012. Contamination is excluded by the circumstance that the elemental abundances within the structures match closely with those of the surrounding matrix. There is also evidence of structures morphologically similar to red rain cells tha...

In previous work, we have proposed a constructive methodology for temporal data learning supported by results and prescriptions related to the embedding theorem, and using the singular spectrum analysis both in order to reduce the effects of the possible discontinuity of the signal and to implement an efficient ensemble method. In this paper we present new results concerning the application of ...

2. Chinese Academy of Meteorological Sciences, Beijing,10086 Abstract Using OTT-Parsivel Laser Particle Spectrometer at Nanjing in East China, several times heavy rain droplet scale & velocity spectral data aquatic from Mt. Lushan weather stations (elevation 1300meters) Compared to the plain deep convective clouds heavy precipitation, the rain droplet size distribution (DSD) with two elevation ...

A physlco-chenmal subcloud rain model IS used to simulate the effect of gaseous HNO, and NO, on pH and SOiproduction in a IOmmh-‘, 1000-m fall distance rain event. The ambient gases constdered m the chemistry were SO,, NO, NO,, HNO,. 0,. and CO,. Ramdrops mtttally at a pH of 5.5 absorbed these gases, and as they fell through a polluted zone, produced SOiand NO; by the oxidatron of dissolved SO,...

Rain cleans pollution out of the atmosphere, as droplets collide with airborne particles during free fall. Such particle–droplet collisions have been presumed to be capture events, but details such lack thorough investigation. We show that rain and interact through multiple collision behaviours, including captures on droplet surface, cavity-forming entries ricochets. drop diameter fall velocity...

Rain removal is important for improving the robustness of outdoor vision based systems. Current rain removal methods show limitations either for complex dynamic scenes shot from fast moving cameras, or under torrential rain fall with opaque occlusions. We propose a novel derain algorithm, which applies superpixel (SP) segmentation to decompose the scene into depth consistent units. Alignment of...