It remains challenging to accurately classify complicated clouds owing the various types of and their distribution on multiple layers. In this paper, multi-band radiation information from geostationary satellite Himawari-8 cloud classification product polar orbit CloudSat June September 2018 are investigated. Based sample sets matched by two data, a random forest (RF) algorithm was applied trai...

 We present three terrestrial gamma ray flashes (TGFs) observed over the Mediterranean basin by the Reuven Ramaty High Energy Solar Spectroscope Imager (RHESSI) satellite. Since the occurrence of these events in the Mediterranean region is quite rare, the characterization of the events was optimized by combining different approaches in order to better define the cloud of origin. The TGFs on 7 N...

Cloud computing services have grown rapidly over the years. Government agencies are also interested in cloud-based provision for their E-government processes. Despite the advantages of cloud-related technologies, there are many security issues as well that fall into several categories of breaches with serious impacts. All these breaches have serious legal and reputational implications. Therefor...

[1] The West African summer monsoon (WAM) is an important driver of the global climate and locally provides most of the annual rainfall. A solid climatological knowledge of the complex vertical cloud structure is invaluable to forecasters and modelers to improve the understanding of the WAM. In this paper, 4 years of data from the CloudSat profiling radar and CALIPSO are used to create a compos...

In this paper, we model the optimisation of the resource allocation in cloud computing as a constraint satisfaction problem considering three types of resources (CPU, RAM and bandwidth) and design a Choco-Based algorithm (CB) for VM resource allocation in virtualised cloud data centres. We also propose an Improved First-Fit Decreasing Algorithm (IFFD) and an Improved Best-Fit Decreasing Algorit...

To investigate further the characteristics of thunderstorms on Qinghai–Tibet plateau, a plateau vortex (PV) thunderstorm and local thermoconvective (TC) over Nagqu area are analyzed using cloud-radar, microwave-radiometer, raindrop-spectrometer data, their macrophysical microphysical evolution discussed in terms thermodynamic processes, lightning activities. The results show following. 1) cloud...

The observed reduction in cloud-to-ground lightning in the near-equatorial zone is examined from the perspective of the width of the main negative charge region. Thermodynamic observations of cloud base height also show a minimum value in the near-equatorial region. The association of low cloud bases with both narrow updrafts and narrow charging zones may impede the bridging of the large air ga...

Charged aerosol particles and water droplets are abundant throughout the lower atmosphere, and may influence interactions between small cloud droplets. This note describes a small, disposable sensor for the measurement of charge in non-thunderstorm cloud, which is an improvement of an earlier sensor [K. A. Nicoll and R. G. Harrison, Rev. Sci. Instrum. 80, 014501 (2009)]. The sensor utilizes a s...