50 METEOROLOGICAL RESULTS OF LAST CRUISE OF CARNEGIE 
Table 61. Results of Fourier analyses of diurnal variation of relative humidity 
for groups, Carnegie, 1928-29 
Ee Coefficients 
row 
a ee es a 
o/o o/o o/o o/o o/o o/o 
I +1.57 -0.35 +0.19 +0.20 -0.22 -0.57 
0 -0.52 +0.53 +0.38 +1.64 -1.29 +0.10 
im +1.25 -0.41 +0.37 +0.79 -0.80 +0.22 
IV +2.78 -0.75 +0.16 +0.86 +0.37 -0.20 
Vv +1.44 -0.80 -0.21 +0.27 0.00 +0.22 
VI +0.70 -0.53 -0.13 +0.72 -0.67 +0.06 
vu 
(a) +2.85 -0.89 -0.15 +0.88 +0.50 -0.09 
(b) +1.71 -0.48 +0.09 +1.09 -0.39 +0.18 
Vu +1.74 -0.09 +0.05 +1.00 +0.11 +0.16 
Kx +2.70 -0.68 0.00 -0.15 -0.41 -0.25 
x +2.12 -0.53 +0.13 +0.82 -0.35 +0.16 
xI +2.63 -0.65 +0.10 +0.72 +0.37 -0.28 
XII +2.10 -0.60 +0.16 +0.01 -0.22 -0.19 
xu 
(a) +2.02 -0.73 -0.08 +1.16 -0.18 +0.06 
(b) +1.44 -0.71 -0.33 +0.98 +0.46 -0.92 
XIV +0.87 -0.18 +0.16 +0.86 -0.81 +0.22 
XV +1.87 +0.06 -0.08 +1.18 -0.67 -0.24 
XVI +2.12 -0.36 +0.61 +1.37 -0.66 +0.15 
XVII 
(a) +1.72 -0.45 -0.15 may By iy ( -0.75 -0.04 
(b) +3.00 -1.00 +0.16 -0.06 +0.87 +0.15 
(c) +0.82 -0.26 -0.22 +0.60 +0.47 -0.26 
XVUI +2.73 -0.54 +0.13 = oe bey | -0.16 -0.09 
= Amplitudes Phase angles 
roup ee a (a) se 
o/o o/o o/o i é $ 
I 1.58 0.41 0.60 82.7 237.8 161.6 
Ul 1.72 1.39 0.39 342.4 157.7 15.3 
i 1.48 0.90 0.43 57.7 207.1 59.3 
IV 2.91 0.84 0.26 72.8 296.3 141.3 
Vv 1.46 0.80 0.30 79.4 270.0 316.6 
VI 1.00 0.85 0.14 44.2 218.3 294.8 
vi 
(a) 2.98 1.02 0.17 72.8 299.3 239.0 
(b) 2.03 0.62 0.20 57.5 230.9 26.6 
vill 2.01 0.14 0.17 60.1 320.7 17.4 
x 2.70 0.79 0.25 93.2 238.9 180.0 
x. 2.21 0.63 0.21 68.9 236.6 39.1 
XI paid 0.75 0.30 74.7 299.6 160.4 
XI 2.10 0.64 0.25 89.7 249.9 139.9 
xi 
(a) 2.33 0.75 0.10 60.1 256.0 306.9 
(b) 1.74 0.85 0.98 55.8 302.9 199.7 
XIV 1.22 0.83 0.27 45.3 192.5 36.0 
XV 2.21 0.67 0.25 57.7 174.9 198.4 
XVI 2.52 0.75 0.63 57.1 208.6 76.2 
XV 
(a) 2.47 0.87 0.15 44.2 211.0 255.1 
(b) 3.00 232 0.22 91.1 311.0 46.8 
(c) 1.02 0.54 0.34 53.8 331.1 220.2 
XVII 3.01 0.56 0.16 65.1 253.5 124.7 


night and 06h. The small diurnal amplitude of relative nus air) on vapor pressure have been used to obtain the 
humidity (1 to 3 per cent) is striking in comparisonwith | variation of relative humidity due to these differences. 
the much greater range observed over land. The results of these computations are presented intable 
62 and figure 34. These data indicate an asymmetrical 
variation, since the minimum value for relative humidi- 
ty occurs within the range (sea minus air temperature) 
+0°6 to +1°0. There is a slight indication that relative 
The same days used for determining the effect of humidity tends to increase as the differences between 
differences between sea and air temperatures (sea mi- | sea and air temperatures increase in either direction 
Variation of Relative Humidity with 
Sea- and Air-Temperature Differences 
