Analyzing and classifying atmospheric circulation patterns (CPs) is useful for studying climate variability. These classifications can effectively identify the links between large-scale regional-local scale processes. This work uses historical (1975–2014) projected (2015–2054) simulations of MPI-ESM1-2-HR model to reproduce CPs over Middle East Iran. Eighteen were identified based on geopotenti...

In situ measurements of atmospheric ozone (O3) are performed routinely from many research aircraft platforms. The most common technique depends on the strong absorption of ultraviolet (UV) light by ozone. As atmospheric science advances to the widespread use of unmanned aircraft systems (UASs), there is an increasing requirement for minimizing instrument space, weight, and power while maintaini...

Abstract Daily weather regimes are defined around the Kerguelen Islands (Southern Ocean) based on daily 500 hPa geopotential height anomalies derived from ERA5 ensemble reanalysis over period 1979-2018. Ten retained as significant. Their occurrences highly consistent across members. Regimes show weak seasonality and non-significant long-term trends in their occurrences. sequences usually short ...

A dynamical downscaling scheme is usually used to provide a short range flood forecasting system with highresolved precipitation fields. Unfortunately, a single forecast of this scheme has a high uncertainty concerning intensity and location especially during extreme events. Alternatively, statistical downscaling techniques like the analogue method can be used which can supply a probabilistic f...

Continental temperature inversions significantly influence air quality, yet little is known about their variability in frequency and intensity with time or sensitivity to dynamical changes with climate. Inversion statistics for six upper-air stations in the American Southwest are derived for the period 1994–2008 from radiosonde data reported by the Global Telecommunication System (GTS) and Nati...

In this paper, we use Monte Carlo simulation method to estimate the intra group correlation coefficient of whole random sample classification design and recalculate size according coefficient. Using method, can easily calculate ODS function SAS software get word output. Then samples are classified. addition, paper analyzes relationship between summer heavy precipitation spatial-temporal variati...

Abstract. Skillful forecasts of extreme weather events have a major socioeconomic relevance. Here, we compare two complementary approaches to diagnose the predictability weather: recent developments in dynamical systems theory and numerical ensemble forecasts. The former allows us define atmospheric configurations terms their persistence local dimension, which provides information on how atmosp...

A high sensitive CMOS Micro-electro-mechanical rectangular capacitive pressure sensor in SiGeMEMS process (Silicon Germanium Micro-electro-mechanical System process) is designed and analyzed. Polycrystalline Silicon Germanium (Poly-SiGe) having low fatigue and high strength is effectively used as the sensor diaphragm material to achieve better reliability. The designed perforated diaphragm clam...

introduction hazards can be divided into two main groups: one based on origin and other based on speed of occurrence. from view point of speed, the hazards divided into catastrophe and gradual types. for example earthquake, flooding, landslide, avalanche and intense rainfall especially hail are classified into catastrophe events. gradual events include drought, global warming and soil creeping....