GROUND FLASH DENSITY IN WINTER THUNDERSTORM

Estimates of lightning ground flash density in Australia and its relationship to thunder-days

Lightning is a phenomenon that is highly variable in space and time. The derivation of reliable estimates of its activity, therefore, requires statistical averaging over a large area and a considerable number of years of observation. The lightning flash density, defined as the number of flashes of a specific type occurring on or over unit area in unit time, is widely used as a statistical descr...

UltraLogicTM High-Density Flash CPLDs

• Flash In-System Reprogrammable (ISRTM) CMOS CPLDs — Combines on board reprogramming with pinout flexibility and a simple timing model — Design changes don’t cause pinout or timing changes — JTAG interface • High density — 32–128 macrocells — 32–128 I/O pins — Multiple clock pins • Fully PCI compliant • Bus Hold capabilities on all I/Os and dedicated inputs • 3.3-V or 5.0-V I/O operation on al...

Applying a climatologically oriented GIS in comparison of TRMM estimated severe thunderstorm rainfalls with ground truth in Sydney metropolitan area

The main objective of the current research was comparison of severe thunderstorm rainfalls with TRMM data when flash flooding events observed in the Sydney Metropolitan Area (SMA) located in NSW, Australia. Severe Thunderstorm Rainfall Events have been first extracted from the severe storm archive of the Australian BOM, by induction of specific criteria. The corresponded derived dataset includ...

A severe thunderstorm climatology for Australia and associated thunderstorm environments

An improved lightning flash rate parameterization developed from Colorado DC3 thunderstorm data for use in cloud-resolving chemical transport models

Accurate prediction of total lightning flash rate in thunderstorms is important to improve estimates of nitrogen oxides (NOx) produced by lightning (LNOx) from the storm scale to the global scale. In this study, flash rate parameterization schemes from the literature are evaluated against observed total flash rates for a sample of 11 Colorado thunderstorms, including nine storms from the Deep C...