A fuzzy logic and neuro-fuzzy system for classification of hydrometeor type based on polarimetric radar measurements is described in this paper. The hydrometeor classification system is implemented by using fuzzy logic and a neural network, where the fuzzy logic is used to infer hydrometeor type, and the neural network learning algorithm is used for automatic adjustment of the parameters of the...

[1] The processes that fix the fractionation of the stable isotopologues of water in the tropical tropopause layer (TTL) are studied using cloud‐resolving model simulations of an idealized equatorial Walker circulation with an imposed Brewer‐Dobson circulation. This simulation framework allows the explicit representation of the convective and microphysical processes at work in the TTL. In this ...

Aerosol-cloud-radiation interactions represent one of the largest uncertainties in the current climate assessment. Much of the complexity arises from the non-monotonic responses of clouds, precipitation and radiative fluxes to aerosol perturbations under various meteorological conditions. In this study, an aerosol-aware Weather Research and Forecasting (WRF) model is used to investigate the mic...

In the context of aviation weather hazards, the study of aircraft icing is very important because of several accidents attributed to it over recent decades. On February 1, 2012, an unusual meteorological situation caused severe icing of a C-212-200, an aircraft used during winter 2011-2012 to study winter cloud systems in the Guadarrama Mountains of the central Iberian Peninsula. Observations i...

We present an investigation of upper tropospheric humidity profiles measured with a standard radiosonde, the Vaisala RS80-A, and a commercial frost-point hygrometer, the Snow White. Modifications to the Snow White, to enable the mirror reflectivity and Peltier cooling current to be monitored during flight, were found to be necessary to determine when the instrument was functioning correctly; a ...

The electrical charge carried by raindrops provides significant information about thunderstorm electrification mechanisms, since the acquired hydrometeors is closely related to microphysical processes that they undergo within clouds. Investigation of charges on was conducted during Remote sensing Electrification, Lightning, And Meso-scale/micro-scale Processes with Adaptive Ground Observations ...

Abstract In this study, the single-moment 6-class bulk cloud microphysics scheme used in operational numerical weather prediction system at Japan Meteorological Agency was improved using observations of Global Precipitation Measurement (GPM) core satellite as reference values. The original has following biases: underestimation ice compared to brightness temperature GPM Microwave Imager (GMI) an...

Abstract Lightning is frequently initiated within the convective regions of thunderstorms, and so flash rates tend to follow trends in updraft speed volume. It has been suggested that lightning production linked turbulent flow generated by updrafts as eddies organize charged hydrometeors into complex charge structures. These structures consist local increased magnitudes between which flash-init...