614 MECHANICS OF PRESSURE SYSTEMS 
MB 
(1000 FT) (KM) “Eo __ 60 40 
ae Xx 
70 ~ <60 S 
~ \ SS — 
ge Se SS ee TA 
20 Ss \ N SE eee ) -65 
767 \ ie va 7 -70 
= 
60 “66 Ges ea \ 57 = a ) Clg Y a 
70——| S / a aye / y, 
- a5 — ) a = Ne ee ee 
je Sy ST, i} Z -ts7 \ Leyes x 
-71 A— 4:69 45 \ Gs \ 55 =58 4 L 1-66 SN 7 
= Se aa \ { — xj 100 
== -o——— —_— 55 \ ~ 
Efe a SS %9 Sy > ———=70 
50 ee oa es a a Say BS 
15 =| See ee y 7 Sees Sele 
765. les ee 7 Pa ) ) ‘ 
a = = = = ——— 15) 
= 7 y +51 = see fens ie 
a i a- < Ge pha 
40 [ i mam aed) 
= = 250 
oO “>>> S = y= SY oo 40 rina — at, —-7 
30 = TE 
20 
5 
10 
o+o 
OAKLAND ELY LANDER BIG SPRING | SAN ANTONIO 
LAS VEGAS OGDEN ALBUQUERQUE FORT WORTH BROWNSVILLE 
(1000 FT) (KM) 
10 
=e "~ 
Se ST A =} 
20 —_ Re NI EO SEO on 
100 
eH 
50115 
150 
4 
9 200 
250 
10 
30 300 
400 
20 
500 
5 
600 
10 sess FHA <5—— 708 
i + : 800 
O ro) — 900 
0--0 ] ; 0) ---= 1000 
OAKLAND RENO SALT LAKE CITY | LANDER BIG SPRING | FORT WORTH BROWNSVILLE 
SACRAMENTO ELY ROCK SPRINGS ABILENE SAN ANTONIO 
o} 500 
[es ee ee a 
KILOMETERS 
Fic. 9.—Vertical cross section through cold dome at 1500 GMT November 18, 1948, along dash-dotted line in Fig. 8c. In top 
figure, heavy lines are frontal boundaries and tropopauses, thin lines isotherms (degrees centigrade). Lower figures show isovels 
ot actual wind velocity (solid thin lines, meters per second) supplemented by computed gradient wind velocities (dash-dotted 
ines). 
