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31.
G. S. Golitsyn B. A. Kader B. M. Koprov M. I. Fortus 《Izvestiya Atmospheric and Oceanic Physics》2006,42(1):127-128
Personalia
Akiva Moiseevich Yaglom (on his 85th birthday) 相似文献32.
G. S. Golitsyn 《Water Resources》2018,45(4):503-507
An explanation is given to the fact that the cumulative number of damage cases is a decreasing function of the form Y?2/3. This is because the inundated area S depends on precipitation volume V as S ~ V2/3. Such dependence is confirmed by the data on the area of mushroom-shaped plumes at river mouths in the sites of river influx into the ocean. 相似文献
33.
Izvestiya, Atmospheric and Oceanic Physics - A technique for deriving and interpreting fractal geophysical processes with power-law spectra of a different nature is described. Examples include the... 相似文献
34.
The field of mechanical energy transfer from the atmosphere to the ocean is computed for the first time. The numerical simulation of waves within the Indian Ocean (IO) water area for the period of 1998?C2009 is used. Mechanical energy transfer is described by two integrated parameters calculated per area unit: the speed of complete energy flux from wind to waves, I E (x, t), and the speed of complete losses in the energy of wind waves, D E (x, t). In order to solve this problem, the wind field W(x, t) (the NCEP/NOAA data) is used; the I E (x, t) and D E (x, t) fields are calculated on the basis of the WAM numerical model containing a modified source function. The results obtained allow us, first, to assess the characteristic spatial distribution of zones ??pumped?? by the wind with mechanical energy for both the wave field and the upper layer of the ocean by seasons, years, and the whole period discussed, second, to determine the extreme and average zonal values of I E (x, t) and D E (x, t), the degree of their shift spacing and balance B E = (I E + D E ); and third, to define the characteristic time scales of variations in the wind field and wave field energies, caused by energy transfer from the wind to waves in the zones and within the Indian ocean as a whole. These results significantly specify the climatic estimates obtained earlier. 相似文献
35.
G. S. Golitsyn G. I. Gorchakov E. I. Grechko E. G. Semoutnikova V. S. Rakitin E. V. Fokeeva A. V. Karpov G. A. Kurbatov E. S. Baikova T. P. Safrygina 《Doklady Earth Sciences》2011,441(2):1666-1672
Using data of spectroscopic measurements in Moscow and Moscow region and data of ecological monitoring from Ostankino TV Tower,
it has been found that, in the period of intense smoke blanketing of the atmosphere in summer 2010 due to large-scale forest-peat
fires on the territory of the European part of the Russian Federation, the carbon monoxide content in the boundary layer and
in the atmospheric depth of Moscow region reached the extremely high level of 8 g/m2, or 17 ×1018 mol/cm2, and the carbon monoxide concentration in the near-ground atmospheric layer increased to 37.5 mg/m3, i.e., an unprecedentedly large value for Moscow and more than a factor of 7 larger than the one-time maximum permissible
concentration for carbon monoxide MPCot = 5 mg/m3. In the first decade of August, when intense smoke blanketing of the Moscow region was observed, the average carbon monoxide
concentrations varied in the range from approximately 3 to 7 m/g3, i.e., an order of magnitude larger than the annual average concentrations calculated according to data of measurements in
2009. The probabilities of exceeding MPCot and multiples of MPCot are calculated. Analysis of data of thermal sensing showed that an important feature of the atmospheric boundary layer over
the city was a high stability of the lower atmospheric layer with the thickness of 150–200 m, and also long-term nighttime
and morning inversions of the air temperature in this layer. 相似文献
36.
G. S. Golitsyn 《Izvestiya Atmospheric and Oceanic Physics》2008,44(5):537-547
Similarity and dimension considerations applied to convection in a rotating fluid allows one to estimate the sizes and horizontal velocities of generated vortices. To do this, it is necessary to know the buoyancy flux in the fluid and the angular velocity of fluid rotation [1, 2]. The author’s preliminary efforts [3] have shown that the sizes, wind speeds, and total kinetic energy can thus be estimated correctly for tropical cyclones (TCs), as well as for polar lows (PLs) (which are often called explosive mesocyclones because they take just a few hours to develop). In this study, the sensible and latent heat fluxes for U = 33 m/s and the related buoyancy fluxes are estimated on the basis of climatology, bulk formulas, and the velocity scale of convection in a rotating fluid. In the tropics, at hurricane wind speeds U ≥ 33 m/s and climatological air humidity r = 80%, the total heat flux at the water surface temperature T s ≥ 26°C becomes equal to or greater than 700 W/m2. Due to the Clausius-Clapeyron equation, the latent heat flux to the atmosphere (the main part of the flux in the tropics) decreases substantially at lower values of T s. Thus, an energy flux from the ocean to the atmosphere of 700 W/m2 or greater should be regarded as the first necessary condition for TC genesis instead of the temperature T s. Low static stability, which must be at least half its climatological value as estimated here, is another necessary condition [4]. In polar regions, total fluxes roughly twice those in the tropics are needed for the formation of explosive mesocyclones, PLs, which is explained by the much smaller role of latent heat, greater geostrophicity, and stronger static stability of the atmosphere there. Enthalpy fluxes and wind speeds are interrelated: the larger the flux is, the stronger the convection, the higher the concentration of angular momentum in an ascending convective air column, and the greater the azimuthal velocity in the vortex are, which in turn enhances the transfer of energy from the ocean. Considering the problem with the use of simple analytic relations makes it possible, for the first time, to find a numerical criterion for their generation. It is hoped that this material may be useful for educational purposes as well. 相似文献
37.
Doklady Earth Sciences - 相似文献
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39.
Tikhonov A. I. Russkikh A. V. Moralev G. V. Golitsyn M. S. Vasil'ev A. V. Duev D. S. Timonova V. A. Nikolaev A. K. Lemeshko A. P. 《Water Resources》2004,31(6):673-678
Uranium-isotopic and multi-element hydrogeochemical methods are used to assess the natural pollution of fresh groundwater in horizons under development due to a modern intrusion of hypogene water with increased boron and fluorine contents in zones of old tectonic dislocations. The total index of the abovestandard (>MAC) pollution of groundwater in the region of the city of Kirov (the Kirov area) reaches 15. To reduce the effect of natural groundwater pollutants on the health of population, it is recommended that the groundwater intake should be regulated, purifiers should be used, and prospects revealed by the isotopic-and-hydrogeochemical data should be explored. The feasibility of modeling the groundwater formation and tracing the neotectonic dislocations in geological platforms is shown. 相似文献
40.
Golitsyn G. S. Efimova L. K. Mokhov I. I. Rumyantsev V. A. Somova N. G. Khon V. Ch. 《Water Resources》2002,29(2):149-154
The characteristics of the Ladoga and Onega hydrological regimes were analyzed, and the features of the annual and long-term variations in their water balance components were determined. The statistically significant positive trends of the average annual precipitation and evaporation in the Ladoga water area and the water inflow for the period of 1932–1995 were determined. The relative effect of the Ladoga water balance components on the formation of its level was studied. Spectral analysis of the components of this balance revealed, in particular, characteristic periods of about four years in the last decades. Based on the analysis, including wavelet, of the longer series of long-term variations in the Ladoga water level, it was found that the spectral structure pronouncedly changed in the period from 1859 to 1995. 相似文献