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K. N. Visheratin N. E. Kamenogradskii F. V. Kashin V. K. Semenov V. P. Sinyakov L. I. Sorokina 《Izvestiya Atmospheric and Oceanic Physics》2006,42(2):184-202
The results of long-term (1980–2003) systematic measurements of the total ozone content at the Issyk Kul station (42.6° N, 77.0° E; 1650 m above sea level) are presented. The statistical characteristics and spectral structure of variations in the total ozone and the main tendencies of its temporal variability are determined. It is found that the total ozone content decreased in 1980–2003 at an average rate of (?1.29±0.08) DU/yr. The results of Fourier and wavelet analyses have shown that only oscillations with periods of 12, 27–29, and 102–105 months are rather stable and can be represented as harmonic oscillations. Oscillations with periods shorter than six months have the character of periodically arising pulsations. Among these, oscillations with periods of 27–29 and 34–37 days can be distinguished. It is noted that the spectral-temporal structure of variations in the total ozone content obtained from ground-based measurements at the Issyk Kul station is in good agreement with the corresponding structure obtained from TOMS satellite measurements. 相似文献
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V. N. Aref’ev F. V. Kashin V. K. Semenov R. M. Akimenko N. E. Kamenogradskii N. I. Sizov V. P. Sinyakov L. B. Upenek V. P. Ustinov 《Izvestiya Atmospheric and Oceanic Physics》2006,42(6):739-751
Refined data of systematic measurements of total water vapor in the atmosphere from May 1980 to April 2005 are presented. The data were obtained at the Issyk Kul atmospheric-monitoring station by the method of solar molecular-absorption spectroscopy. Over 25 years, the annual mean water-vapor content in the atmosphere increased by 4.5% at a mean rate of increase of 0.18% per year. However, the water-vapor content decreased in the last five years. The results of statistical processing of experimental data (general statistical characteristics, correlation coefficients, composite oscillations) are described. A refined model is proposed for forecasts of temporal variations in the monthly mean and annual mean water-vapor contents for the coming years. The model includes a linear trend and the sum of oscillations with periods close to the periods of a number of well-known geophysical phenomena. Regression equations are proposed to relate the water-vapor content in the atmospheric column to the surface temperature and absolute humidity. 相似文献
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G. M. Tovmasyan R. Kh. Oganesyan R. A. Epremyan S. E. Nersesyan M. A. Mkrtchyan Yu. M. Khodzhayants M. N. Krmoyan A. L. Kashin D. Huguenin S. I. Serova Yu. V. Romanenko A. P. Aleksandrov V. G. Titov M. Kh. Manarov 《Astrophysics》1990,32(1):1-5
Byurakan Astrophysical Observatory; SKB Granit; Geneva Observatory; Flight Control Center. Translated from Astrofizika, Vol. 32, No. 1, p. 5–13, January–February, 1990. 相似文献
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Cu concentrations in surface (river and lake) and subsurface waters are determined. The geographic pattern of Cu distribution in natural water is identified. This pattern is controlled by the difference between its concentrations in drained rocks and soils and the geochemical redox conditions of its migration. Territories with low, medium, and elevated Cu concentrations in natural waters are identified. The concentrations of Cu in natural waters of the region are found to be generally lower than the Clarke values. 相似文献
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Absract The manganese content of the surface (river, lake) and subsurface waters of Transbaikalia is determined. The geographical
peculiarities of manganese distribution in natural waters are found to be due to different Mn concentrations in drained rocks
and soils, as well as to the geochemical redox conditions of migration. The areas with low, medium, and high concentrations
of Mn in natural waters and the sources of water in which Mn concentrations exceed MAC are revealed.
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Translated from Vodnye Resursy, Vol. 32, No. 5, 2005, pp. 597–600.
Original Russian Text Copyright ? 2005 by Kashin, Ivanov. 相似文献
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V. N. Aref’ev F. V. Kashin L. I. Milekhin V. L. Milekhin N. V. Tereb L. B. Upenek 《Izvestiya Atmospheric and Oceanic Physics》2013,49(1):66-76
The results of measurements of surface ozone in central European Russia in 2004–2010 are presented. The variation coefficient for hourly, monthly, and annual mean ozone concentrations is 78, 26, and 12%, respectively. The measurements established a link between increased (>60 μg/m3) and minimum (<12 μg/m3) hourly mean ozone concentrations with the existence of a temperature inversion in the lower 300-m atmospheric layer. Sixty-seven percent of the total number of increased hourly mean ozone concentrations over the 2004–2010 period took place in 2010. A maximum hourly mean ozone concentration of 218.5 μg/m3 was recorded at 17:00 on August 1, 2010. The annual mean ozone concentration in a climatically significant range of hourly mean concentrations from 12 to 60 μg/m3 increased by 45% in a linear approximation over the period of record. The spectral analysis of monthly mean concentrations of surface ozone identified composite oscillations with periods from 3 to 60 months. To approximate the temporal dynamics of ozone, a statistical model was used. This model satisfactorily describes the experimental monthly and annual mean concentrations. 相似文献
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Copper content was analyzed in the parent rocks, soils, natural waters, and plants of the taiga and steppe terrains of Transbaikalia. The concentration of copper appeared to be low in the taiga terrains compared with the steppe ones. Extensive biogenic accumulation of copper was detected in the plants of steppe communities. It was shown that copper is selectively absorbed by different plant species from the same habitat and by a single species in different environment conditions. 相似文献