748
sicm
cirnt at q.5 mi- erons.
roem-
MONTHLY WEATHER REVIEW. OmBFB, 1919
MEASUREMENTS OF THE SOLAR CONSTANT OF RADIATION AT CALAMA. CHILE.
By C. G. ABBOT, Director, Astrophysical Observatory.
[Dated: Smlthsonlan Institution, Washington, Nov. 24,1919.1
p/pUC. V.P.
In continuation of preceding publications I give in the following table the results obtained at Cnlnma, Chile, in September, 1919, for the solar constant of radiation. The reader is referred to this REVIEW for February, August, and Se tember, 1919. for statements of the arrangement anzmeaning of the table. The obaervations during the month .of September are wholly comparable w!th those made in the months of
July and August, havmg been made largely by the new method which was descrlbed in the last two of the above citations from the REVIEW. It will bo noticed that the
observations for September are uniformly. lower than those for August, the September average bemg a prosi-
calories per square centlmeter per minute.
mately 1.93 and the August average-approximate !i) y 1.95
-I
-
Data.
Remarks. Rel. Ium.
__
1919.
swt. 1 a
A. Y.
?. Y.
Sept. 3
A. Y.
Sept. 4
5
6
7
8
8
10
P. Cl.
12 Thin cirri s c a t t e d
14 Some cirri low in east. about sky.
-
Solar
:m5t
_____I
._.._i
--ii.l
12 Some cirri in east.
---I .....
I-.-_.I
Gill. I. 930
I. 8% I. 917 1.812
1.917 1. 930 1.928
1.941 1.947
1.938 1. 841 1.918 1.935 1.929 1.834 1.839 1. 837 1. ma 1. gcg 1.933 1. gag 1.957 1.943 1.641 1.918 1.932 1.831
1.905 1.929
1.921
13 Cirri scattered about skv and near sun at tiiies.
32
i
I.._..
dethod
...... ...... ...... 19
13
15
._._.. ......
...... ......
.-.-.. .._.._ ...... 10 Scattered cirri prevent- 4
ing observatiom at
12 Distant cirrl in west.
...... Distimt cumuli in
...... Wt.
3-
15
..__.. ......
I
~
Trans I mis-
at 0.5
Grade.
.
YI ......
I crons.
-I-_,-
s-
YI ...... Ka...... S- Y.,.. W .Y
.Mi
.&a3
.a 2
....... ....... .864
.......
.................... ................... .mi .13
................... ................... .G53! .10
I
.39i I .P .................... .......I .....
.......I .....
.......I..... .579 16
....................
Humidity.
hfs ...... br :. w. MI.. hfr ......
dP=.
-
0.741 .a2
..... .__._
.m ..... .....
.52i
..-.. ..... ..-.. .5i2
..-.. ._.._ -616
.691
. 611
.583
.__.. .....
..... ..-..
_..__ .....
._._. ..... ..... .574
..... ......
P.. ...
S-
............ .......
I
W.M Ma ...... M?.. w. M.. Yo....-. Ms.. MI.. w. M.. M I .BO...
I
V. P. if&
I ........ S
\'I>+
..........
.......... ......
.......... ...... s-
-i-
.R e d
.S5i
Ca. P. c!. o.05 i .06 i
................... ................... ................... .735 .12
.508 .22
................... ...................
F& ...... MI W.Y
E-...... &..--. MI W. Y.. Ma ...... MI w. M.. MI ...... MI W.Y Ma.. .... MI W .Y MI ...... MI W. Y.. E....... MI Yt.. W.M Mt ...... MI W. Y..
Remarks.
u+ .885 .................... ................
E- .858
.............. .................... .............. S .885
....................
S . ME .................... ................ S .871
.................... ................ 8- .... .M1 .................... .............. VG- .W .................... .................. ................ S .M1 .................... ..............
..............
Cirri in smith and a t . Cirri in east.
MJ ...... M? W. M..
Cirri scattered about sky in a. m. Cirri in east and south in p. u1.
Cirri in south.
8
............ ......
Some cirri in e n ~t below sun.
........... ........... ........... .15
.lo
........... ...........
Some cirri in enst.
17
12
Some cirri in east.
.M1
.s60
.sfh5
.M1
1 .857
j:::
Cirri scattered about Sky.
................... ................... .6S1 .OB
................... ................... ................... .59s .l:
.631 .ll
.648 .1(
.556 .l:
................... ...................
................... ...................
................... ...................
................ ................ Some cirri scattered about south.
...... 12
...... ...... ...... 14
15
...... ......
Date.
Low cirri in east.
1919.
Sept.11
A. Y.
13
13
14
15
17
18
19
30
51
P. n. stpt. 5:
A. H. srpt. 72
')I
-..
a
a;
21
?I
3(
-
........... .10
........... ........... ........... .l a ........... ...........
-
Gal. I. 911
I. 87s 1.9%
1.918
I. 915 1.946 i. 9 3 1.94s I. 0'2.; 1.9B
1.922 1.9%
1.925 1.932 1.93i
1.933 1.522 1.947 1.939 1.945 1.9.w 1. $49
1.91i
1.941 1.957 1.94s
1. o w
1.91; 1.919 1.918
1.9558
1.925
1.940
1.93
1.932 1.818 1.93.
1.951 1.941 1.9% 1.851 1. ws 1.92; 1.9K 1. m 1.w 1. (H 1.5%
1.93; l.!W 1.85<
1.91: 1. ill!
-
13
13
...... ...... 13
______ _._._.
e ....... 1 vc- h l a .............
Thln cirri in east south a n d w e s t k e r streaky o& who6 Sky.
K l y ............. \V. M.. ....... hr1 ...... s MI ...... \V. d::::::
R ........ I VG Ma .......... Mi ___._. 1:: ____
M I ......, s- u-. M. _I__ ....
M? ...... 1.. .... W. M..'... ... Eo ...... VI.3-t M a ............ M:. .- .-. w. x.;:::::: Mis ...... 1 s- N?. ........... W. M.. ...... MIJ...... 8- $1 I. ........... w. M.. j.. .... MJ ...... I s
M 2 ...... ' ..... W. N..l- %¶?.a. - - 1. SI Mp..-. -1.. .... W. M. ........
I
~~~l mi+ I Humidity. I
i
_-
0.865 I 0.683 I E 4
....... I ............ .856 I .4a I .ae ...... 33 Cirri in e s t , south and
______ west.