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r1987^ 4 H ~ 5 H £ 4*V mM{Ti5.T$£± L tz

Distributionand Movement of Smokes from Forest Fires

that occurred along the Boundary of the People's Republic of China andthe USSR on April-May 1987

Tadashi Aso and Seiichiro Kigawa

Abstract

Big forest fires occurred along the boundary of the People's Republic of China and the USSR

on April-May 1987. Distribution and movement of smokes from the forest fires can be detected

in GMS visible imagery,but hardly in the infrared imagery. Smokes spread over the Sea of Japan

and moreover the northwestern Pacific Ocean. They moved several thousand Kilometers from the source

and yet had a considerable particle density to be detected in the visible imagery.

A numerical simulation by the Global Tracer Model was carried out to confirm that the

observed grey area can be regarded as the smoke from the forest fires. A simulated horizontal

distribution agrees quite well with the observed area over the continent, the Sea of Japan and

the Pacific Ocean.

An increment of albedo due to the existence of smoke particles is 0.01~0.09 over the sea.

Movement of smoke particles is greatly influenced by a synoptical disturbance. Height of

smoke advection is high in front of a front, and low behind a front. This height difference

indicates that the advection height of smoke particles is determined not by the updraft over the

forest fires, but by the ascending and descending current of synoptical disturbance.

1. ttUAt

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Meteorological SatelliteCenter

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2. mm

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METEORLOGICAL SATELLITE CENTER TECHNICAL NOTE No. 17 NOVEMBER, 1988

≪:1987^ 5^60 OOUTC c GMS aJMmt$.X$> o

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m.giffim-ti>*- &mm£ mi7% 1988*11/1

Fig. 2 Infrared image at OOUTC on 6 MAY 1987. Grey scale forblackbody

temperature(°C)is shown on the right.

-17-


Fig. 3 Same as in Fig.l, but around Japan.

Fig. 4 Same as in Fig.l except for OOUTC on 7 MAY 1987.

-18-

rn.-m.mmM>$- &mms tsi7-§- 1988^11^

Fig. 5 Same as in Fig.l except for OOUTC on 10 MAY 1987.

Fig. 6 Same as in Fig.2 except for OOUTC on 10 MAY 1987.

-19

METEORLOGICAL SATELLITE CENTER TECHNICAL NOTE No. 17 NOVEMBER. 1988

albedo is shown on the right and only small range of al

is colored.

Fig. 8 Colored visibleimage at OOUTC on 10 MAY 1987. Grey scale for

albedo is shown on the right and only small range of albedo (0.06M). 12)

is colored.

20-

(a)

(b)

%M&mM>$- mm& *i7-s i988#nj!

(d)

(e)

(f)

Fig. 9 Observed horizontal distributionsof "smokes".

Solidline indicates somewhat clear boundary of "smokes" and dotted line

indicates less clear boundary.

-21-


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Fig. 10 Area of forest fires

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Q : (52.8N. 123.5E)

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. . ... .t i ■

.i mFig. 11 Comparison between the observed horizontal distribution of

"smokes" by GMS and surface observations at 03UTC on 6 MAY 1987.

Meanings of solidline and dotted line are the same as in Fig.9. Symbol

r" means that smokes are observed in that station and symbol oo means

that smokes are also observed, but the source of smokes are not

Fie. 12 Same as in Fig. 11 except for 03UTC on 7 MAY 1987.

-23-

METEORLOGICAL SATELLITE CENTER TECHNICAL NOTE No. 17 NOVEMBER,1988

(a)

(b)

(d)

(e)

(c) (f)

Fig. 13 Predicted horizontal distributionsof the tracers from point P.

-24-

(a)

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Fig. 14 Sea level pressure distribution.

y^^ k cJit***£GMS #WJ Lfc#jg$!R ≪)i&

4 Biafttil5ixfc'bcf*S3:k*5≪|*5fL5o

-25-


(a)(c)

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Fig. 15 Predicted horizontal distributionsof the tracers from point Q.

4. m<D≫n

ttz0 5R 5 0cOOUTC tO6UTC0ittgttîpm

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mb

100

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10 20 30 ≪0 50 60 70 80 90

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Fig. 16 Predicted vertical (left) and horizontal (right) distributions of the tracers from point P.

-27-


5. *£

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2) 4>VMtt£T*Llj#≪*sf£3£LT^c:^ *

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mmxm

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725~729.

/M?j|, 1986: r^m^^^MciJ^j. I4|xrn

*ffl5f&. &IF*fiB. 1986: r*mr^t/HclJlU

^BBIEH. 1988: tpmXm±.(DMR, %m, 32, 9776.

MWE., *tt―. 1988: A Tracer DiffusionModel

Coupled with The JMA Global SpectralModel,

JMA/NPD TechnicalReport, No. 24

W-, l987:$H^mi£i^T;W£o^T, ifcfit^

iINWP-i-X.No.8.

^#1IIKhI. 1980: rX>thVj frb^tzmK M^>

24. 5982~5983.

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≪pj. %mffi^y?-&mm%M7^ 13-27.

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gms cx6i98W(D&±＼ff(D'XiumkmwL n

ft≪M-fe^^-R^i@tf5^ 47-64.

0jT*B1* (JBKfiff^m). 1987:^{f.

-29-

r1987^ 4h ~ 5h £4*v mm{ti5.t$£± l tz · 4≫^*ic*~ii^ilt, 4~5000kmjgfchn ... ^^§s5j*l. iti6...

Documents

r1987^ 4h ~ 5h £4v mm{ti5.t$£± l tz · 4≫^ic~ii^ilt, 4~5000kmjgfchn ... ^^§s5jl. iti6...