The meteorological conditions during the period of spring transition over the Middle East and the Persian Gulf and adjacent land area is investigated. Monthly and seasonal variations of large-scale atmospheric patterns and wind aloft features at different levels were drawn from data collected from the National Centers for Environmental Prediction and National Center for Atmospheric Researches. ...

Hyperlipidemia and stress are important factors affecting cardiovascular health in middle-aged individuals. We investigated the effects of N-acetylcysteine (NAC) and sesame oil on the lipidemic status, liver architecture and the hypothalamic-pituitary-adrenal (HPA) axis of middle-aged mice fed a cholesterol-enriched diet. We randomized 36 middle-aged C57bl/6 mice into 6 groups: a control group,...

The paper studies the long-term dynamics of air temperature and relative humidity anomaly indices in surface layer at different levels troposphere Siberia neighboring regions (European Far Eastern sectors). As main cause observed variations climatic parameters we considered circulation factors, which were taken into account using typification macrocirculation processes proposed by B.L. Dzerdzee...

This study investigates the impact of central Pacific (CP) El Niño–Southern Oscillation (ENSO) on tropical cyclone (TC) frequency over western North (WNP) decadal and interannual timescales. The CP ENSO-TC relationship is strong significant only timescales, with enhanced TC formation most WNP associated warm ENSO phases. changes, driven by ENSO, exhibit a southeast–northwest dipole pattern simi...

introduction shamal winds recognized as a climate regime with a common occurrence in the persian gulf makes periodically adverse weather conditions in this region. among the phenomena occurring under the influence of shamal wind, we can mention dust storms, low-level winds and turbulent marine conditions (rao, 2003). shamal winds are categorized into two types, winter shamal and summer shamal. ...

After the release of ERA-Interim reanalysis, many changes have been made to Integrated Forecasting System model and data-assimilation system, resulting in an improved ERA5. One allows version ERA5 represent moisture sensitivity deep convection more realistically than ERA-Interim. A previous modeling study showed that this change alone representation tropical atmosphere, e.g. variability precipi...

abstract in recent years, dust storm in western part of iran, especially fars province, caused various problems for people. the aim of this research is the identification of circulation patterns producing dust storms over fars province. for this purpose, firstly the code number 6 of current weather at 12 gmt belongs to 8 synoptic stations during the statistical period of 1992-2003 has been extr...

Clustering techniques are adapted to facilitate the comparison of gridded 700-hPa wind flow patterns spanning the continental United States. A recent decade (1985–94) of wind component data has been extracted from two widely used reanalysis datasets: NCEP-R1 and the NCEP–Department of Energy (DOE) Atmospheric Model Intercomparison Project, phase two (AMIP-R2). Metrics and measures are identifie...