The basic task of this course is acquaintance of students,
specialising in the field of physics of aerosols, theory of
energy transfer, with bases of the theory of dispersion of
electromagnetic radiation, methods and particular results of
experimental researches of optical properties of atmospheric
aerosols, with basic physical and technical problems resulting in
rather rigid restrictions of existing nowadays opportunities of
researches and modern knowledge about perspectives of
development of this part of atmospheric physics.
As basis for the present course have served the own works of the author (experimental researches of aerosol attenuation and its constituents in nature conditions, researches of spectral absorption of aerosols, modelling of the optical characteristics of aerosols, researches of temporary and spatial variations of the optical characteristics of the atmosphere), carried out largely together with L.S. Ivlev.
The theory of fractal systems, nowadays one of most active
developing direction of researches in the field of natural
sciences finds the widest application in physics, allowing at a
new level to describe many well investigated processes and
phenomena, and in many cases to explain some effects, earlier,
within the framework of traditional knowledge remaining not
clear. One of the most perspective areas of application of the
theory, physics of small particles agglomerates, in particular
their optical properties, that represents doubtless interest for
researches of optical properties of aerosols in connection with a
wide distribution of similar formations in atmospheric
The basic task of an offered course is acquaintance of the post-graduate students specialising in the field of physics of aerosols and the theories of energy transfer with real properties of small particles agglomerates, caused by the features of their structure, and modern methods of their study and description. A basis for an offered course are the literature data and results of own researches of the author. In connection with novelty of a considered material (for the first time given subjects have begun to be studied about 10 years ago), the accessible literature practically is absent (in Russian about ten articles, a little more in English).
The course is devoted to consideration of questions connected to passing of electrical processes in the atmosphere. The given direction in development of physics of the atmosphere historically was the first and keeps the actuality till now.
Lecturer: Ph.D N.M. Gavrilov; 6 cr
(see course details at lecturer's home page)
The basics of modern methods of observations of variations of atmospheric parameters by means of rockets, radars, lidars and satellite are considered. The basics of indicated modern methods of research of atmospheric dynamics are considered from uniform positions. Comparing to many similar courses the large attention is given to the analysis of accuracy and opportunities of various methods, connected with their space and temporary resolution. Accuracy and opportunities of various methods, as well as main results of measurements are analized. The lectures are recommended to students, specializing in the physics of atmosphere, ecology, geophysics, physics of ionosphere and radiophysics.
The main goal of this course is to apply the concepts and methods of the dynamical system theory (DST) or deterministic chaos theory (DCT) to the atmospheric physics problems. The TDS basic notions ( as phase space, phase trajectory, regular and strange attractors, Lyapunov exponents etc.) are introduced and further used analyzing the dynamics of simple low-dimensional systems (as Van der Paul or Duffing oscillators, the Rayleigh-Benard convection and others). The DST and DCT open the new perspectives for understanding nonlinear atmospheric dynamics. This is illustrated by detailed analysis of Lorenz s three-dimensional atmospheric model. The important part of the course is devoted to the predictability problems of nonlinear system dynamical evolution generally and atmospheric one in particular. Dynamics of error growth and role of scales on predictability and the necessity of a statistical approach to the forecasting of atmosphere dynamic evolution is explored. The passage from short-scale atmospheric dynamics to global climate dynamics is also outlined. Some ideas aiming to connect these two scales of atmospheric variability are discussed.
1. General notions about the physical ecology, biosphere.
Monitoring of general physical parameters.
2. Energetics and environment. Stability of the biosphere like the main condition of environment preservation. The principle of Le-Chatelier in the biosphere. The role of artificial power sources in changes of the biosphere.
3. Pollution in the environment. Pollution of the earth, water, atmosphere. Radioactive pollution. Electromagnetic and acoustic pollution. Pollution of flora and fauna.
4. Changes in the biosphere due to the human activity.
5. Changes of the Earth climate. Introduction in the physical climatology. The atmosphere composition and the climate. Influences on the climate. Nuclear winter.
6. Modelling and forecasting of the environment parameters. Problem of the liquid shorts purification. Catastrophes. Optimal planning of economy development. Urbanisation problems.
In this course the local methods of atmospheric monitoring
used by various special departmental and research organisations
Are considered the basic physical principles of action of devices for the control and analysis of concentration, chemical structure and other characteristics of small atmospheric components and aerosols, and also radio-activity of air. The features of processing of results of local measurements and their opportunities are explicated. The examples of using the local mesurements in the solution of ecology problems are given.
Lecturer: Dr. E.F. Mihailov (34 hours)
The basic task of the course - acquaintance of students,
specialised in the field of physics of the atmosphere with bases
of the theory of fractal analysis and methods of its using in
practical tasks. The special attention is given to application of
a method in optics and aerodynamics of atmospheric aerosols.
Basis of the course are the fundamental works in the field of the theory of fractal systems, original literature on application of fractal analysis in applied researches, own works of the author and his colleagues.
In a course of lectures the exact analytical and numerical methods of the emission energy transfer in planetary atmospheres are considered. The theory of energy transfer with frequency redistribution is stated in detail.
Direct and inverse problems of mathematical physics. Direct
and inverse problems of atmospheric optics. Examples of the
inverse problems of atmospheric optics. Correctness of the
mathematical tasks ( Hadamard, Tikhonov ). Incorrectness of the
inverse problems. Fredholm integral equation of the first kind.
Variational derivatives and linearization of nonlinear problems.
Formulation of real inverse problems of atmospheric optics.
Different sources of errors in the solution. Regularization
principles. A priori information. Different types of the a priori
information. Root mean square solution of the inverse problems
and its instability. Coefficient of amplifying the measurement
errors. Deterministic methods of solving the integral equation.
Statistical methods of the solution. Derivation of the inverse operator. Error matrix of the solution. Iterative methods of solving the inverse problems. Problem of a convergence. Information content of indirect measurements. Optimal conditions of the measurements. Vertical resolution of the indirect measurements and averaging operator. Examples of solving different inverse problems of atmospheric optics.
Practice. Numerical realization and analysis of inverse problems of atmospheric optics: retrieval of the temperature, humidity, trace gases content, aerosol and etc.
The course is conventionally delivered to fourth year students whose speciality is physics of atmosphere.
Physics of geomagnetic phenomena is studied as a constituent of the solar-terrestrial physics. The basic facts about the sun, solar corona, and solar wind. Chapman’s static and Parker’s dynamic models of the solar corona. Analytical representation of the Earth’s magnetic field. Interaction of the solar wind with the geomagnetic field in the MHD approximation. The magnetosphere of the Earth, its structure. Distribution and properties of the magnetospheric plasma, adiabatic invariants. Radiation belts, ring current. Ionosphere, ionospheric conductivity, ionospheric current systems. Geomagnetic disturbances and magnetospheric storms. Indices of geomagnetic activity. (32 hours).
Lecturer: prof. G.M. Shved; 5 cr.; 54 hr.
Mechanisms of heating and cooling of the planetary atmospheres. Transformation of energy forms. Lorenz energy cicle. Special features of the vertical profiles of temperature in the planetary atmospheres. Geostrophic adjustment. Equations of absolute and potential vorticities. Convection in the planetary atmospheres, meso-scale Rayleigh-Benard convection, conditional instability of the second kind, macro-scale Hadley circulation. Barotropic and baroclinic instability, Rossby regime of circulation, baroclinic adjustment. Motions in midlatitude synoptic systems, cyclones and anticyclones, fronts. Tropical cyclones.
Classification of wave types. Linear theory acoustic-gravity waves (AGW). Equation of the wave energy. Sources and propagation of AGW. Observations of AGW. Inertio-gravity waves. Observations of global waves. Normal Rossby modes. Lunar and solar atmospheric tides and there sources. Equatorial waves and there sources. Gravity-wave breaking, forcing zonal-mean circulation by waves. Quasi-biennial oscillation of zonal wind in the equatorial stratosphere.