£ttttflm≪k#5 m$momk%;!k mnmm · 2014. 8. 26. · ls^iillo-tt-e^ o^r^b, rliuft: o^ttki^ 3....

1

£ttttflM*≪*K#5 m$momk%;!k mnmm

Occurrence of Linearly Ranged Cb-clouds Associated with

Migrating Band-shaped Cirriform-clouds

―A Case Study―

£ * m %.*

Kazufumi Suzuki*

Abstract

In the midsummer, linearly ranged Cb-clouds along the southern coast of Japan were

often observed in the southwestern leading edge of migrating band-shaped cirriform-clouds.

These phenomena (rapidly moving band-shaped cirriform-clouds) are usually related to

subsynoptic-scale upper troughs with a weak cold air mass.

It is difficult to find out such a weak sub-synoptic-scale upper trough from the con-

ventional data only, however, by tracing the band-shaped cirriform-clouds on the satellite

pictures, we can detect such kind of the trough easily.

It ZV>[Z

Shimamura (1981) ^>^K (1981) Kilî, fSi^ffi

lieoH/t^b^^^îia-t-tô ^|!i (1984) ≪,

* %MLffiM.-byfi―M$(M> Meteorological Satellite

Center

2. mi%%±<D$m

･ISKlg^^£JliHî, 1984^7^29036^8^170 4

t?-c*5o torn 0*?oftRi^:t<^ff*#£fci:

i c 6T?£ cR#SB*£, GMS-2 o^^-Wfe Sr^S*≫

ib, $!SK:<fc;5ig$iMl 0 4(a] (OOZ, 06Z, 12Z, 18Z)

IS^ft:S06ZcB≪*ffl＼.ô

7H290;5≫e>8î704t?, 2om<DO6z<Dmm^mm

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1 ―

METEOROLOGICAL SATELLITE CENTER TECHNICAL NOTE No. 11. MARCH 1985

Fie. 1 0600Z AUG 6 1984. IR

Fig. 2 0600Z AUG 4 1984. IR

2 -

&£ffifi-fey*- WMm.^ Illf 1985^ 3 £

4 5^£ot£, 8^4 0 (Fig. 2) O^n?î-0 liSji

Lfc8*3L*#, ^fe J£I8. KB. rt/HlKiofcfcotfr

LSîillO-tt-e^ O^r^b, RliUft: O^ttKi^

3. ≪£L3H±<h≪ttJi£RK#T

m±^%m (Fig. 3) tit, 7 006Z, ･>-<<; T^^b

O^^mH^fcitSO0 ttlLtlô 8 0O6Z, i

Fig. 3 Surface charts. Left and right charts

show 06Z 7 Aug. and 06Z 8 Aug. 1984, res-

pectively.

7 B06Z (Fig. 4) JtRUt?, 3＼l§mîb≪m<OlU

Jfe^SHSLSMftL-C^So 7 R12Z (Fig. 5) £:&*$･

fctl'5. v~^~£-j£g| (Fig. 9) T?*5i, 06Z

SH8 0O6Z (Fig. 7) PUlf^bf), m≪%^

*^^*, m&, M*%*obi2z>mmm±^m?Lm

lô 12Z (Fig. 8) ^gLS^^ÛS-Cit-l^L^ds

M**S|5-eW:ft^?S|gt?*So i"-*-£M(Fig. 9)

t?*5i, 06ZtcRffiS4-&tp*3-AS#|83, UJ^r^

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Htiff0Kijt-<, 06 z, i2z##aEffi≫asiOi£&-ejK

8 006Z (Fig. 7) cgfc-m, Hl^^ra-C^Lfc

SUSffi** -30° C -C≫a≪300 mb ilSffiKifflSL-Cl^

Ei, l&≪j6≫b5ilJ;T?t≪≪^tt*ftofc4*35/ ^ b

Hti, *ft (1984) &ffim}:nftM*E.%lhtz4kflri>*b

i OS^ÎBS a (Fig. 5 d^b Fig. 8 ±-e^fEp a t?

liSait, 7 H12Z 0*$^Kiifc*i, 8H00zm

Table 1 SSI (left column) and equivalent

potential temperature of 850 mb (right

column) at Akita (47582), Sendai (47590),

Tateno (47646), Hachijo (47678), Wajima

(47600) and Shionomisaki (47778).

47512 175VO tiHt ･ 7*71 ･ 7400 ≫777≫

7 0017 }}3 33) 1 30) 10 122 4 331 332

7 Ui 33* 1 3≪6 -1 352 5 333 2 3*1 0 J≫≪

≫ ooi 3 J≫7 32≪ 0 3≪7 1 }≪ i 333 T 329

* III 1 JJ7 -2 349 -1 349 0 )≪) 03≪0 -2 352

≫ oar 0J39 2 JJ≪ 0 3≪2 0 3*2 2 JJ7 0 )≪≪

1 121 2 itl0 342 -1 M4 1 3≪≪ -1 )4≪ -2 350

10 0015 113 5 33≪ 1 340 1 311 * 3)2 -1 J<≪

10 121 11 32≪ 3 U9 1 ≫≪ 3 13J 10 326 -1 341

― 3 ―


Fig. 4 0600Z AUG 7 1984. IR

Fig. 5 1200Z AL'G 7 1984. IR

xt%ffiM-t>＼*~ KMf-i ^ll'J 1985^- 3 n

Fie. 6 OOOOZ AUCi 8 1984. IR

Fig. 7 0600Z AUC. 8 1984. IR

― .) ―


Fig. 8 1200Z AUG 8 1984. IR.

Fig. 9 Digital radar echo composite maps.

6 ―

4. -momm

&fe*M-fev*~ ft≫*£ S&lUt 1985^3J!

Table 1 it, &i&&<D SSI (■>^* a-* - c £5gJF

&, 850mb Jgc^#*≫?&$jc±#3*-T:?#;fc££*,

500mb c^tf&a≫lb3|lvfcffi) i, 850mb o^g^Sfi^

SSI ^0WT**#-CHlÔfil^**Si, Z<dM

m±mt^T-$:Mtmm＼Z-& >), t^8 Bl2ZWî

850mb cfflSfiftw:, #%^ 340K fr^t'^tfe^

≪e-3"C8Hl2Z j&ÔÊIg^^î, 8HOOZJUI8I

500mb KmfS.i>mALfcfcfeirJ^MJîxô

£O≪rB1 500 mb (Fig. 10) W, dbi≫40oi ≫?mt?,

^, 8 0OOZ^tA≫Mfc|^, 8 012Z0*omR±Ki^

WjhXiô Z<DUfeT&mA＼t, 8.0O6ZR0**^

7/12Z

KTKEAfciJt^-t* *-*#;*: £i＼> -o^TIW

Bit, ftmWfrhitLML, 9 0OOZ0#c3ft6±T?iB£

36° t-emTL-cJeofgJK^JKtf-rvô

300 mb (Fig. 10) Tit, ÔRii^^^-fJilfB]O^

^kti, 500 mb i ＼)m *) x b t?*ofc0 dfcl* 40° J: t)ft

X-it, § (04>C-T?JarflliKo h?7Ciî0 **≫, 7

H12Z H*j@+^, 8 BQOZ-Miti*hitmB&, 8 H12Z

HÎlif^?), 8H00Zil2ZcDrB1&H*m^^

S^Lti>S0 -308C O^SJlJi, h7 7Ciftffi^

^^*r b ≪&JGt l, 8 012 z a≫e> 0 *o^jg±-c

1-77Co^vit^^î^-<^^&, i*s)iioBtrBTOR

%･ Fig. 11 Ki^-fo

fAH-Cit, 300mb -C8 0OOZ^§*5Rot*J≫), h

57C ic^J^-fô 400 mb ;$>b 500 mb o| (8 012Z

fclPlJi 500 mb *≫?, 700 mb c1) ≫i, R|5: (T-Td)

# 18° C ≪±O|feJ6ltt-C* ≫J, 700 mb i >jTJg-CttS

8/12Z

Fig. 10 upper; 300mb charts. Thin solid lines show isotherms of ―30°C. Solid

lines named C indicate trough axis, lower; 500mb charts. Broken lines show iso-

therms of ―6°C. The stippled areas represent the temperature descent more than

1°C in preceding 12 hours.

― 7 ―


Tateno

r( ( L _ "15

L (<

>.

r

■^00

-*-5OO

£-700

£-850

t

r <■ <

＼r

/<

Of"

･･

1

r

＼

^ r

r

(

^

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≪£ £j£^ A

*% r-*sA.

■'

9 8 8 7 7

OOz 12z OOz 12z OOz

r 6 I , mD

4mi ＼ ,

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r-300

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―500

L-700

1-850

t

＼*

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r

t

c―>･ r

^ ･<

r81 t>{

m Ife r-^^

'■*$&.

*&9 8 8 7 7

00* 12? OOz 122 OOz

8 7 7 9

z OOz 12z OOz 002

Akita

Fig. 11 Vertical wind cross sections at Akita, Tateno and Hachijo. Thin solid lines

show isolines of T-Td drawn at intervals of 6°C. The stippled areas show T-Td

less than 6°C. Thick solid lines indicate upper sub-synoptic-scale throughs.

Fig. 12 Vorticity and geopotential height at 500 mb. Positive

vorticities are stippled. The letters "A" and "B" denote the

centers of the temperature descent areas more than 1°C in pre-

ceding 12 hours (reffer to Fig. 10).

- 8 ―

&£≪£*:'*- &#f*# Bn% 1985^3^

cRR*î"SRfrcg£fb&*≫*b*ift:^££d>e>, b

77CU 500mb i t)±i(D§t'|,5^H%^0

ttz 300 mb ･*> 400 mb≪£

*) ftKi 200 mb "CRfac

(JJC^ffiWc) F7 7fô ^B!lR*%ffiR£{K^L

mSRoBa^^p>, ^M (&K:£ftcRi≪lci£4E)

& 500 mb i D±lO h 9 7|(fRtc, g^S^t (^H^

iRjOJUlBjOJIi^) *S 500mb i 0±lO b 7 7|St^

fil^t?i, 300mb -C8 HO6Z^@3&saRL, F57

C Ki ^JCE-f * o lfe*ISc*≫ 400 mb fa h 500 mb fcj| e>

H, 400mb J; OTJi^t ÔR5@*zn!g£"f 5R|rIO^

to'^f)|ift:l^H^> b 9 7CJt 400mb i 0±S

ifch7 7fiJR-r:-^≫^, ^B^K^âEA^^^

A^^t'tt, &a*fil≫≪£BI! 0 i 5 ft:b 7 7cia

tt^febix-f, 400mb X.*)±M'eitMii*bikft'^R^

So iO->t-7^y[i, 300mb-t:-8 H06ZîiiiL,

b7 7Cit, 500mb tofigilk (fiffiTPUlfiA)

Ltl^c/c5 5K Fig. 12 li, 500 mb OMcl5l

≪, ^mmm, umr&RAtB (Fig. 10 #m) ^

500 mb O^STi^MBtt, dfcifit45° ^^5HU^:iE≪S

5. &tV>

L&^±≪ 4>1 O^-C&ofco £ch?:m, 8 0O6Z

m m

Shimamura, M., 1981: The Upper-Tropospheric Cold

Lows io the Northwestern Pacific as Revealed in

the GMS Satellite Data, The Geophy. Mag., 39,

119-156.

'NR^gp, i98i: i&&mfrb*&m^mA-t%-k-*m

9, 3z%, 28, 57-60.

iEMffi, ^%, 31, 421-424.

Kttmm, 1984: ffiM.mm-tr*m$mKUtcftm*m~r

zm. %%wiM.mM%, m^^r, 11-26.

9 ―

£ttttflm*≪*k#5 m$momk%;!k mnmm · 2014. 8. 26. · ls^iillo-tt-e^ o^r^b, rliuft: o^ttki^ 3....

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£ttttflm≪k#5 m$momk%;!k mnmm · 2014. 8. 26. · ls^iillo-tt-e^ o^r^b, rliuft: o^ttki^ 3....