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...

A new laser air-motion sensor measures the true airspeed with a standard uncertainty of less than 0.1 m s−1 and so reduces uncertainty in the measured component of the relative wind along the longitudinal axis of the aircraft to about the same level. The calculated pressure expected from that airspeed at the inlet of a pitot tube then provides a basis for calibrating the measurements of dynamic...

Fractionation of stable isotopes in precipitation runs through the water cycle, and deuterium excess is a second-order parameter linking water-stable oxygen hydrogen isotopes. It strongly influenced by under-cloud evaporation unsaturated air, especially arid climates. Based on improved Stewart model, this study used 670 isotope data measured meteorological element from 11 sampling points Januar...

The theory of summation of electromagnetic line transitions is used to tabulate the Taylor expansion of the refractive index of humid air over the basic independent parameters (temperature, pressure, humidity, wavelength) in five separate infrared regions from the H to the Q band at a fixed percentage of Carbon Dioxide. These are least-squares fits to raw, highly resolved spectra for a set of t...

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...

In intense tropical cyclones, sea level pressures at the center are 50–100 hPa lower than outside the vortex, but only 10–30 hPa of the total pressure fall occurs inside the eye between the eyewall and the center. Warming by dry subsidence accounts for this fraction of the total hydrostatic pressure fall. Convection in the eyewall causes the warming by doing work on the eye to force the thermal...

1. introduction one of the most important conditions to have dusty weather beside of unstable weather is existence or non-existence of humidity. unstable weather having enough humidity will produce rain and thunder storm, else if the result will be dust storm. number of particles of dusty storm is depended to wind speed, sec of soil and its dimension. furthermore, vegetation type has importance...

TiO2 nanopowder is prepared by simple sol-gel method using starting material as titanium isopropoxide with methanol and annealed at 600°C, 700°C and 800°C for 1 hour in air. X-ray diffraction pattern revealed the presence of both anatase and rutile phase in TiO2 specimens annealed at different temperatures. It is observed that the content of rutile phase and crystallite size increases with incr...

This work aimed to study the synoptic evolution and dynamics of dust activity associated with desert cyclone occurring over North Africa Arabian Peninsula on 4–8 April 2007 based ECMWF analysis (ERA5) data. formed (Algeria) in lee Atlas Mountains response a powerful upper-level trough transporting cold air into northern coming from high latitudes. The development was initiated when contrast tem...

We examined the effect of ambient temperature, air pressure and air pollutants on daily emergency admissions by identifying the cause of admission for each type of stroke and cardiovascular disease using generalized linear Poisson regression models allowing for overdispersion, and controlling for seasonal and inter-annual variations, days of the week and public holidays, levels of influenza and...