In this paper we attempt to answer the question of whether display cumulonimbus clouds on air traffic controller radar screens has a significant impact control. The developed cloud mapping simulator allowed study be performed by performing simulations with flight control simulator. This an assessment how makes decisions when is displayed and it not. benefits imaging for aircraft trajectories ti...

The charge transport within thunderclouds by the convective motions of the cloud is examined. I n the presencc of the primary positive dipole, shielding charge distributions are formed within thc lower and upper cloud boundaries as the result of ion conduction from the free air and ion capture by droplets and precipitation in peripheral cloud layers. Cloud droplets positivcly charged by the con...

The serendipitous discovery of red sprites by the late Prof. Jack Winckler, while testing a low-light television camera (LLTV) for a sounding rocket mission in 1989, changed forever our view of the middle atmosphere (Franz et al. 1990). Once thought to be dynamically and electrically quiescent, the stratosphere and mesosphere are increasingly understood to be regions of intense gravity waves (m...

This research focuses on the spatial diversity of cloud-to-ground (CG) flashes in Kujawsko-Pomorskie voivodeship (Poland) based data from PERUN lightning detection system, 2002-2019. The storm season usually lasts May to September, with July having highest number thunderstorms days and flashes. Thunderstorms most often occur afternoon. A generated grid 5×5-km cells was used characterise variabl...

Article history: Received 11 December 2007 Accepted 27 March 2008 The global electrical circuit, which maintains a potential of about 280 kV between the earth and the ionosphere, is thought to be driven mainly by thunderstorms and lightning. However, very few in situ measurements of electrical current above thunderstorms have been successfully obtained. In this paper, we present dc to very low ...

Estimation of the atmospheric wind field based on cloud tracking using a time sequence of satellite imagery is an extremely challenging problem due to the complex dynamics of the imaging instruments and the underlying non-linear phenomena of cloud formation and weather. Cloud motion may involve both partial fluid motion and partial solid motion, which we model as semi-fluid motion. Motion algor...

The crowning objective of this research was to identify a better cloud classification method to upgrade the current window-based clustering algorithm used operationally for China's first operational geostationary meteorological satellite FengYun-2C (FY-2C) data. First, the capabilities of six widely-used Artificial Neural Network (ANN) methods are analyzed, together with the comparison of two o...

Thunderstorm nowcasting is an important function for the severe weather forecaster. The usual method is for radar to detect thunderstorms, and for downstream systems to generate ’threat areas’ for issuing warnings. However, these threat areas are difficult for other systems to work with as they are not mathematically well defined. In this paper we develop an algorithm, THESPA (THunderstorm Envi...