data were obtained as to the simultansous occurrence of southerly
winds at 50,000 feet and at levels below.
The results are shown in
Table 1 following:
TABLE 1
ALTITUDES
DIRECTIONS
120° through 240°
100° through 260°
50 to 30 thousand
3.4% (16)
10.8% (51)
50 to 20 thousand
2.1% (10)
6.0% (29)
50 to 10 thousand
oh% (2)
2.3% (11)
Note:
Percentage frequency of winds of given directions occurring simultaneously at all levels below 50,000 feet.
(474 observations during period 1 January through 14
May 1954.
Cases in parenthesis).
Table 2 following, shows that winds with southerly components
have occurred as frequently during these months of 1954 as they did
in past years,
TABLE
1945, 1946,1950, 1951, and 1952
Note:
1954,
300M
32%
10,000 ft
30%
800CM
21%
25,000 fb
26%
15000M
35%
50,900 ft
40%
7
Percentage frequency of winds with southerly compo~
nents, January, February, March, April through midMay 1954, as compared to previous years.
From the above tables, the following conclusions were drawn:
The upper winds during CASTLE were as favorable as past
years for such an operations; this was a fairly "normal"
Na
year.
t?
1.
—e@