SCIENTIFIC ABSTRACT PRESSMAN, A.YA. - PRETNAR, S.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001343010006-3
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: March 14, 2001
• Sequence Number: 6
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

S/020/61/140/001/002/024
Asymptotic representatirns ClIlIC222
4, '~t, = - :~ e- - 1 , v - - x!~- 0. The formulas are obtained nq above by a
change of the sign for For integral V n and large x it holds
X) e -'x2(- 2x) n-1
n (19)
"
For fractional >~ and large x it holds
(X) 2 x (20)
A number of further partially known formulas (amongst others concerning
the connection with the Hermitean polynomials) is given.
There are 3 Soviet-bloc and 2 non-Soviet-bloc referen6es, The reference
to the English language publication reads as follows : E.T. Whittacker,
G.N.Watson: Kurs sovremennogo analiza (Modern analysis), 2, 1934,
PRESENTEDs I'Jarch 21, 1961, ba A.A. Dorodnitzyn, Academician
SUBMITTED: March 20, 1961
Card 3/3

PETROV) V. N. ! MESSMW, A. Ya, , .
Estimation of the effect of turbulent scattering along th--
vertical and in the direction of the wind on the*propagation of
a polydispersed impurity. Dokl. AN SSSR 146 no.1:86-88 S 162.
(MIRA 15:9)
1. Institut prikl-adnoy geofiziki AN SSSR. Predstavleno
akademikom Ye.K. Fedorovym.
(Geophysics)

ACC NR, AP7002139 - S.0 .U.RCE--CbDE:'--Uk/0050/66/OW/012/0019/00261
AUTHOR: Pressman, D. Ya.
ORG: Hydrometeorologic Center for Scientific Research,SSSR (Gidrometeorologicheskiy
n&uchno-issledovatellskiy teentr SSSR)
TITIZ: Solution of the complete equations for short-range weather prognosis and of
the problem of nonlinear adaptation of the pressure and wind fields
SOURCE: Meteorologiya i gidrologiya, no. 12, 1966, 19-26
TOPIC TAGS: atmospheric model, atmospheric movement, atmospheric geopotentiali
weather forecasting, atmospheric pressurej atmospheric wind field
ABSTRACT& Solution of the system of equations
du du all all do
W- + a-S-- + V--j- + 00-W- I-V + 0
t x Y C
019- dv dv du a
6V + Uwe + V- ay- + *,--j 1u +-ry 0
art + + 1-t. 0
dx d.v dC
do* as IV d2 0
-F- + JW- + VT- + 0
C drc
UDC: _551--509013

ACC NRz AP7002139
describing atmospheric movement, is worked out by the finite-difference method. Heret
Y, P t are coordinates and time; *a= ty dt" e components of
PJOM ar
velocity in these coordinates; is geopotential; .1 Coriolis parameter, here
assumed to be equal 1, sin " - sin 1,4 - 10-4 ceK-1; L- is the length or the
. L L f_(V Q. - 7)
interval within which x and y are variables; X(Q = - ; Y adiabatic
g C2
lapse rate; f - temper6ture lapse rate; R - gas constant; standard tempera-
ture; g - gravity acceleration; p - pressure. The viscosity and effect of the earth's!
surface curvature are ignored, and the atmospheric processes are assumed to be adia-
batic and pseudostatic. An example of prognosis attained for 24 hours by using the
above sysLem of equations is given in Fig. 1. The average relative error for the
geopotential field in this leg as calculated for the European territory, is 0- 5
(sea level), 0.67 (700 mill=# 0 .55 (300 millibar)- The author expresses his
gratitude to A. I. Kibellp corresponding member of AN SSSHfor his interest in this
work,
Card 2

; ACC NRs Ap7oo21 39 1
1
Fig. 1. Prognostic map of the surface presdure for
3 hours, 13 January 1966
.11 f.
Orig. art. has: 3 figures and 3 equations.
7
- i
I

L 27369-66 EWT(111"Poc i~Li-XI-icz)
ACZ-RT, A-TS024833 UR/3118/65/000/006/0033/0040
AUTHOR: Pressman. r'. Ya.
ORG: Non~~
TITLE: A.finite differ ences method of short term weather predictioqt~~
SOURCEAMirovoy meteorologicheskiy tsentr. Trudy, no.6, 1965. Voprosy gidrod'inami-
cheskogo kratkosrochnogo prognoza pogody i mezometeorologii (problems in hydrodynamic
short-range weather forecasting and mesometeorology), 33-40
TOPIC TAGS: weather forecasting, hydrodynamicso mathematic model,, atmospheric model,
approximation, wind velocity, atmospheric geopotentials weather map, Coriolis forcep
iteration, atmospheric pressure, atmospheric density
ABSMIACT: A finite differences mathematical model for the numerical solution of sing
layer atmosphere hydrodynamic equations is proposed and its computational stabLlity i:
vestigated. The-.departur-e-point is the system of hydrodynamic*equaiions, (1)
'ou-
+ ti 21 + V IV + 0
()X _WY_ ox
+ it + v �_'_ + III + �_P = 0
dy dy
av
04D 2( OU a 0
+ U + C + V
di dX _TY_ dX
47Y
which is an appr-o'xima~e:C6n--io---certiin-,-w-e'il--Rho-wn hydro4hamiC'i~quation's.''The notations
Card 1/3 UDC: None

L 2736,9-66
ACC NRs AT5024833
are: U. V9 - hori mntal components of the wind velocity; geopotential; I - the
Coriolis parameter;. c,.- a., const.ant'li.aying-the,dimension of velocity and given by
C2 (A - PO P, I do (2)
2
where p - pressura, density,O - potential temperature, and subscripts refer to i
the ground and the working level. The initial conditions are uot Vol 0 at time t=O
for the working level within the square O