Personal
page of Alexander Polyakov
Welcome! And thank you for visiting.
A few words on my education and work experience:
Learning at the Math-Mech of St.Petersburg State
University (former Leningrad State Univertsity), I
have already began to work at Atmospheric Physics Department of Physical
Faculty, where performed my degree work. My sertificate
of degree was obtained at the Math-Mech in 1976.
Since my scientific interests are concentrated on the interpretation of
satellite measurements of atmospheric composition and parameters of the atmosphere,
that includes: calculations of atmospheric radiation characteristics, methods
and realizations of the solution of inverse problems of atmospheric optics,
methods for designing experiments, the interpretation of space and ground-based
atmospheric transmittance and self-radiation measurements in different spectral
ranges. Results of these studies were applied for interpreting the measurements
by devices developed in our University ("IKAR", "PHENIX",
"OZONE-M", "OZONE-MIR") and
comprised the base of my Ph.D dissertation in Physics
and Mathematics. This degree was received in 1994. Measurements by the
last-mentioned device "OZONE-MIR" operating in the frames of the
Project "PRIRODA" on the Orbital Station MIR in
1996-97 gave a possibility to obtain qualitative data on profiles of ozone and
other atmospheric components.
In 2002 the USA device "SAGE III" (that is similar to "OZONE-MIR") began to operate. We updated
the algorithms and codes developed for "OZONE-MIR" for interpreting
the SAGE III measurements. Papers deducated to these
studies are in the list of my papers, and retrieval results can be downloaded
from this page.
As a result of my basic work, I became a doctoral thesis "Determination
of the gas composition of the atmosphere and aerosol characteristics by
eclipsing method," which I successfully defended in March 2007.
Starting from 2009.
on
the department, and then - in the resource center "Geomodel"
works an unique instrument - the Fourier interferometer BRUKER IFS 125HR. Thanks
to the work of our colleagues who perform regular measurements of solar
radiation spectra, I have the opportunity to obtain data on the total content
of gases such as HCl, HF and some freons in the atmosphere. These
measurements and analysis of their results constitute an essential part of my
interests.
At the same time, the satellite
theme has been continued. So,
in the middle of the 2000 eyars we
succeeded in developing a technique based on the method of artificial neural
networks (ANN) which allows to obtain the total ozone
content (TOC) based on the spectral data of the European geostationary instrument
SEVIRI. High
spatial and temporal resolution of SEVIRI measurements allowed to obtain TOC with the same space-time characteristics.
For many years fruitful
cooperation with SRC "Planeta" and the Keldysh Center has continued,
the main theme of which is the inversion of radiation measurements of
instruments of Russian meteorological satellites of the "Meteor M"
series. Instruments
that measure the outgoing radiation of the Earth in the IR and microwave
regions of the spectrum, traditional for meteorological satellites in the
sun-synchronous orbit, make it possible to obtain not only meteorological data
(temperature and humidity profiles), but also data on the composition of the
atmosphere, in particular, TOC. The
software for converting the results of spectral measurements into data on the
state and composition of the atmosphere was developed by us with colleagues and
transmitted to the SRC "Planeta". Comparison
of temperature profiles with radiosonde data showed agreement between the
results of two types of measurements within 1K for most of the troposphere and
the lower stratosphere.
My papers
Some papers You can download from the laboratory site.
My affiliation:
Polyakov Alexander Viktorovich,
Ph.D. in Physics and Mathematics, professor
Atmospheric Physics Department,
Faculty of Physics SPbSU
E-mail:
ftp site:
FTP is inactive now!
for up- and down- load
Phones:
- home +7(812)6592265
- work +7(812)4284347
- mobile +7(921)6306502
· SAGE III data download:
To laboratory site http://troll.phys.spbu.ru
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