Mechanism of the appearance of a large-scale vortex in the troposphere above a nonuniformly heated surface

Belot︠s︡erkovskiĭ, O. M.; Мингалев, И. В.; Mingalev, V. S.; Мингалев, О. В.; Oparin, A. M.

doi:10.1134/s1028334x06080277

Cited by 6 publications

(15 citation statements)

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“…The first mathematical model has been applied in order to simulate the global circulation of the middle atmosphere for various geophysical conditions [17]- [24]. The second mathematical model, developed earlier in the PGI, is a limited area non-hydrostatic numerical model of the wind system of the Earth's lower atmosphere which has been described in the paper of Belotserkovskii et al [25].…”

Section: Description Of the Applied Mathematical Modelmentioning

confidence: 99%

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Numerical Modeling of the Influence of the Relief of a Planet on the Global Circulation of the Earth’s Stratosphere and Mesosphere

Мингалев¹,

Orlov²,

Mingalev³

2017

ACS

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An investigation of the influence of the relief of a planet on the global circulation of the Earth's atmosphere is an important problem. Beyond doubt, mountains affect the global circulation of the troposphere, however, their influence on the global circulation of the stratosphere and mesosphere is not evident. In the present study, to investigate the influence of the relief of a planet on the global circulation of the Earth's stratosphere and mesosphere, the non-hydrostatic mathematical model, developed earlier in the Polar Geophysical Institute, is utilized. Calculations were made for two distinct cases. The relief of the planet was taken into account for the first case. Unlike, the Earth's surface was assumed to be smooth for the second case. Simulations were performed for the winter period in the northern hemisphere (January). Simulation results, obtained for both considered cases, are qualitatively similar at the levels of stratosphere and mesosphere, however, some noticeable distinctions exist. The horizontal domains exist, where the simulated horizontal and vertical components of the neutral wind velocity, obtained for two considered cases, differ noticeably at the levels of the stratosphere and mesosphere. Some of these horizontal domains are not connected with positions of mountains at the Earth's surface. On the contrary, some of these horizontal domains are situated above mountains.

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Section: Description Of the Applied Mathematical Modelmentioning

confidence: 99%

“…This regional mathematical model of the wind system of the lower atmosphere was earlier applied in order to investigate numerically the mechanisms responsible for the formation of large-scale vortices in the Earth's lower atmosphere [25]- [31].…”

Section: Description Of the Applied Mathematical Modelmentioning

confidence: 99%

Numerical Modeling of the Influence of the Relief of a Planet on the Global Circulation of the Earth’s Stratosphere and Mesosphere

Мингалев¹,

Orlov²,

Mingalev³

2017

ACS

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“…Complete details of the utilized finite-difference method and numerical schemes have been presented in the paper of Mingalev et al [26]. More complete details of the applied regional mathematical model may be found in the studies of Belotserkovskii et al [19] [20] and Mingalev et al [23].…”

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confidence: 99%

“…In particular, this model was applied to investigate the formation mechanisms of a large-scale vortex over an ocean surface [19] [20]. This regional model was applied to investigate the formation mechanism of polar lows [21] [22], too.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Modeling of the Initial Formation of Cyclonic Vortices at Tropical Latitudes

Мингалев¹,

Astafieva²,

Orlov³

et al. 2014

ACS

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A Simulation Study of the Formation of Large-Scale Cyclonic and Anticyclonic Vortices in the Vicinity of the Intertropical Convergence Zone

et al. 2013

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A regional nonhydrostatic mathematical model of the wind system of the lower atmosphere, developed recently in the Polar Geophysical Institute, is utilized to investigate the initial stage of the origin of large-scale vortices at tropical latitudes. The model produces three-dimensional distributions of the atmospheric parameters in the height range from 0 to 15 km over a limited region of the Earth’s surface. Time-dependent modeling is performed for the cases when, at the initial moment, the simulation domain is intersected by the intertropical convergence zone (ITCZ). Calculations are made for various cases in which the initial forms of the intertropical convergence zone are different and contained convexities with distinct shapes, which are consistent with the results of satellite microwave monitoring of the Earth’s atmosphere. The results of modeling indicate that the origin of convexities in the form of the intertropical convergence zone, having distinct configurations, can lead to the formation of different large-scale vortices, in particular, a cyclonic vortex, a pair of cyclonic-anticyclonic vortices, and a pair of cyclonic vortices, during a period not longer than three days. The radii of these large-scale vortices are about 400–600 km. The horizontal wind velocity in these vortices can achieve values of 15–20 m/s in the course of time.

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Mechanism of the appearance of a large-scale vortex in the troposphere above a nonuniformly heated surface

Cited by 6 publications

References 1 publication

Numerical Modeling of the Influence of the Relief of a Planet on the Global Circulation of the Earth’s Stratosphere and Mesosphere

Numerical Modeling of the Influence of the Relief of a Planet on the Global Circulation of the Earth’s Stratosphere and Mesosphere

Numerical Modeling of the Initial Formation of Cyclonic Vortices at Tropical Latitudes

A Simulation Study of the Formation of Large-Scale Cyclonic and Anticyclonic Vortices in the Vicinity of the Intertropical Convergence Zone

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