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The noncontact method for investigation of cloud-radiation interaction
J. Aerosol Sci., Vol. 26. Suppl 1, pp. $489-$490, 1995 Elsevier Science Ltd Printed in Great Britain 0021-8502/95 $9.50 + 0.00
l~ D e r " a m o n
THE NONCONTACT METHOD FOR INVESTIGATION OF CLOUD-P.AnIATION INTERACTION M.A.IOP~ANSKIY,B.V.ZUDIN,V.A.T.I~EDEV,A.V.ANDRONOVA
~ v
I n s t i t u t e of Physical Chemistry Moscow 1 0 3 0 6 4 , ~ m s l a
ABSTRACT interaction The results of investigations of cloud-radiation (Zvenigorod performed in the Institute of Atmospheric Physics experiment station). New noncontact method used in this includin~ the automatical thermovision complex is described. The air temperature near earth, radiation temper~ature of the cloud lower level and the radiation fluxes are measured in these experiments. KEYWORDS 01cuds; radiation fluxes; temperature of clouds; thermovision complex. METHODS The automatical thermovision complex (ATC) is the system for forming and designing real-time thermal image in investigating and analyzing the static and nonstatic sky regions. The complex includes: -the thermovision set with field of view - 8x8 (139 mwad) instantaneous field - 2.0 mwad, - kreit KAMAK with measurement and picture input equipment, - personal computer of IBM Pc/AT type, - software packaKe. Temperature range available is 253.15 K to 573.15 K. Frame dimensions 64x64 elements. The time of recording of a frame of thermal image into computer memory stretches in the experiments was 1/16 (Fr 16 Hz). Spectral ranKe ~ =7,75 - 10,25 mona (for apparatus function = 0.5). RESULTS AND DISOUSSION The results on radiative temperature and calculations of radiative fluxes for the clouds of different kinds 8me presented in the Table I. As follows from the Table I the radiative $489
$490
M . A . IORDANSKIYet al.
temperature of the cloud layer of such clouds a~rees well with the result of ref.[ I ]. It demonstrates a possibility of using the method for measuring the radiative temperature of clouds. It is neoessar~ to supplement the method with the contrast in visible diapason. Table I. Oaracteristics of the clouds. Type cloud
Temp.of the air near earth
Height of clouds lower level
Radiation temper.of ell level
Radiation flux from the oli
(011}
(K)
(m)
(K)
(Wlm 2 )
Frnb,So
285,65
200
287,4
65,0
Frnb,So
285,95
400
286,7
58,9
Frnb,So
283,65
800
285,0
55,45
Cu Ou
282,5 287,0
1100 - 1700 1200 - 1600
283,6 286,0
56,75 56,40
0u
287,45
1800 - 2600
282,0
52,20
0u
293,0
1900 - 2700
281,5
51,75
So
283,65
1700 - 1800
281,0
51,25
So,Ao
285,45
1300 - 1500
282,5
52,7
So,Ao
288,8
2000 - 2300
280,0
50,2
8o,Ao
291,5
2000 - 2800
279,0
49,1
Ae
287,65
2800 - 3000
271,0
41,6
Ac
288,15
2400 - 2600
274,0
44,3
REFERENCE 1.P.W.Summers. Role of Olouds in the Ohemistry, Transport, Transformation and Deposition of Air Pollutants: General Concepts, Current UnderstandinK and Future Research Needs. World Meteorological Organization, Report No.17, 1991,pp.27-45.
l~ D e r " a m o n
THE NONCONTACT METHOD FOR INVESTIGATION OF CLOUD-P.AnIATION INTERACTION M.A.IOP~ANSKIY,B.V.ZUDIN,V.A.T.I~EDEV,A.V.ANDRONOVA
~ v
I n s t i t u t e of Physical Chemistry Moscow 1 0 3 0 6 4 , ~ m s l a
ABSTRACT interaction The results of investigations of cloud-radiation (Zvenigorod performed in the Institute of Atmospheric Physics experiment station). New noncontact method used in this includin~ the automatical thermovision complex is described. The air temperature near earth, radiation temper~ature of the cloud lower level and the radiation fluxes are measured in these experiments. KEYWORDS 01cuds; radiation fluxes; temperature of clouds; thermovision complex. METHODS The automatical thermovision complex (ATC) is the system for forming and designing real-time thermal image in investigating and analyzing the static and nonstatic sky regions. The complex includes: -the thermovision set with field of view - 8x8 (139 mwad) instantaneous field - 2.0 mwad, - kreit KAMAK with measurement and picture input equipment, - personal computer of IBM Pc/AT type, - software packaKe. Temperature range available is 253.15 K to 573.15 K. Frame dimensions 64x64 elements. The time of recording of a frame of thermal image into computer memory stretches in the experiments was 1/16 (Fr 16 Hz). Spectral ranKe ~ =7,75 - 10,25 mona (for apparatus function = 0.5). RESULTS AND DISOUSSION The results on radiative temperature and calculations of radiative fluxes for the clouds of different kinds 8me presented in the Table I. As follows from the Table I the radiative $489
$490
M . A . IORDANSKIYet al.
temperature of the cloud layer of such clouds a~rees well with the result of ref.[ I ]. It demonstrates a possibility of using the method for measuring the radiative temperature of clouds. It is neoessar~ to supplement the method with the contrast in visible diapason. Table I. Oaracteristics of the clouds. Type cloud
Temp.of the air near earth
Height of clouds lower level
Radiation temper.of ell level
Radiation flux from the oli
(011}
(K)
(m)
(K)
(Wlm 2 )
Frnb,So
285,65
200
287,4
65,0
Frnb,So
285,95
400
286,7
58,9
Frnb,So
283,65
800
285,0
55,45
Cu Ou
282,5 287,0
1100 - 1700 1200 - 1600
283,6 286,0
56,75 56,40
0u
287,45
1800 - 2600
282,0
52,20
0u
293,0
1900 - 2700
281,5
51,75
So
283,65
1700 - 1800
281,0
51,25
So,Ao
285,45
1300 - 1500
282,5
52,7
So,Ao
288,8
2000 - 2300
280,0
50,2
8o,Ao
291,5
2000 - 2800
279,0
49,1
Ae
287,65
2800 - 3000
271,0
41,6
Ac
288,15
2400 - 2600
274,0
44,3
REFERENCE 1.P.W.Summers. Role of Olouds in the Ohemistry, Transport, Transformation and Deposition of Air Pollutants: General Concepts, Current UnderstandinK and Future Research Needs. World Meteorological Organization, Report No.17, 1991,pp.27-45.