ATOMIC ENERGY L'ÉNERGIE ATOMIQUE OF CANADA LIMITED … · ATOMIC ENERGY OF CANADA LIMITED ENERGY,...
34
AECL-5717 ATOMIC ENERGY 0jff& L'ÉNERGIE ATOMIQUE OF CANADA LIMITED Efijr DU CANADA LIMITÉE ENERGY, WATER AND TRITIUM BUDGETS FOR PERCH LAKE: 1975 by E. ROBERTSON, D.P. WILDSMITH and P.C. JAY Chalk River Nuclear Laboratories Chalk River, Ontario July 1977
Transcript of ATOMIC ENERGY L'ÉNERGIE ATOMIQUE OF CANADA LIMITED … · ATOMIC ENERGY OF CANADA LIMITED ENERGY,...
AECL-5717
ATOMIC ENERGY 0 j f f & L'ÉNERGIE ATOMIQUEOF CANADA LIMITED E f i j r DU CANADA LIMITÉE
ENERGY, WATER AND TRITIUM BUDGETS FOR PERCH LAKE:
1975
by
E. ROBERTSON, D.P. WILDSMITH and P.C. JAY
Chalk River Nuclear Laboratories
Chalk River, Ontario
July 1977
ATOMIC ENERGY OF CANADA LIMITED
ENERGY, WATER AND TRITIUM BUDGETS FORPERCH LAKE: 1975
E. Robertson, D.P. Wildsmith and p.C. Jay-Biology and Health Physics DivisionEnvironmental Research Branch
Chalk River Nuclear LaboratoriesChalk River, Ontario
July, 1977
AECL-5717
Bilan de l'énergie, de l'eau et du tritium dans ie
lac des Perches en 1975
par
E. Robertson, D.P. Wildsmith et P.C. Jay
Résumé
Les bilans d'eau et d'énergie du lac des Perches sontprésentés pour l'année 1975 ainsi que les co-<~entrations detritium dans les nappes d'eau souterraines. Les valeursmensuelles et annuelles des composants majeurs des équationsdes bilans sont comparées aux valeurs moyennes des six anspour lesquels des données sont maintenant disponibles.
L'Energie Atomique du Canada, LimitéeLaboratoires Nucléaires de Chalk River
Chalk River, Ontario
Juillet 1977
AECL-5717
ENERGY, WATER AND TRITIUM BUDGETS FORPERCH LAKE: 1975
by
E. Robertson, D.P. Wildsmith and P.C. Jay-Biology and Health Physics DivisionEnvironmental Research Branch
ABSTRACT
Energy and water budgets for Perch Lake are presentedfor the year 1975 along with the tritium concentrations ofthe ground water component. Monthly and annual values ofthe major components of the budget equations are comparedwith the mean values for the six years for which data arenow available.
Chalk Rivi=r Nuclear LaboratoriesChalk River, Ontario
July, 1977
AECL-5717
ENERGY, WATER AND TRITIUM BUDGETS FORPERCH LAKE: 19 75
by
E. Robertson, D.P. Wildsmith and P.C. JayBiology and Health Physics DivisionEnvironmental Research Branch
INTRODUCTION
Energy, water and tritium budgets of Perch Lake forthe years 1970-73 were presented in papers by Barry andRobertson [1] and Barry, Robertson and Wildsmith [2]. Thework was continued with some modifications in 1974 and re-sults were published [3]. This paper presents the resultsfor 1975 and average values for 1970-75. The latest re-sults are given in SI units. However, to preserve con-tinuity with the results from previous years they are alsogiven in an appendix in the old units.
ENERGY BUDGET
The energy budget record for 1975 is the longest andmost complete to date. This was made possible by favour-able weather conditions and prompt installation of tempera-ture probes and a net radiometer in the spring, disconnect-ing sensitive instruments and electronic equipment when therewas a possibility of thunderstorms, and leaving instrumentsin position until after the lake was permanently frozen on22 November.
- 2 -
Figure 1 shows the daily heat content of the lake,five-day running mean temperature and net radiation. Theten-day average values of the major components of theenergy budget are plotted in Figure 2.
Tables I to VIII list the daily and ten-day averagevalues of the terms of the energy balance equation:
A Q = N R - H - L E + P - S (1)
where all the terms are expressed per unit area of surface,
AQ is the change in stored lake energy
NR is the net radiant energy absorbed by the lakesurface
H is the sensible heat lost to the atmosphere
L is the latent heat of vapourisation (taken to be2.5 kJ-gm"1 (59 0 cal • gin"1)
E is the volume of water evaporated from 1 cm2 oflake surface
P is the heat gained from precipitation
S is the heat lost to the sediments.
All terms are measured directly except H and LE. These areseparated using the Bowen ratio defined as:
— (2)LE
and estimated from the relation:
T - T= C
- 3 -
where T is the surface water temperature
T is the air temperaturea
e is the saturated vapour pressure at the surfaces water temperature
e is the vapour pressure of the aira
C is a constant =63.2 Pa-'C"1
= (0.474 mm Hg^c"1) .
The algebraic sum of the measured terms in Equation (1) formsa residual R equal to -(H + LE) thus :
A Q - N R - P + S = R = - ( H + LE)
whence substituting (2) and rearranging gives:
Table IX gives ten-day average values of all dataavailable and the resulting mean monthly evaporation ratesfrom Perch Lake.
- 4 -
TABLE I
Daily Energy Budget, May 1975
Date
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Total
AQ NR P S R -H -LE
MJ'ItT2
79.60
84.41
87.51
91.01
99.17
107.6
-
-
117.2
-
135.2
130.2
135.8
-
-
154.6
157.2
167.2
173.8
-
-
172.0
169.0
158.7
160.1
166.2
159.9
161.3
4.81
3 . 1
3 . 5
8.16
8.45
9.54*
18.0*
-4.90
5.52
18.B*
2 . 6
10.0
6.65
-1.8*
-3.0
-10.3
1.4
6.07
-6.32
1.4
17.4
9.54
6.24
11.5
17.1
17.6
16.7
16.7
12.2
16.4
18.1
15.3
6.91
14.9
18.0
15.6
10.7
16.0
16.4
17.9
18.5
17.1
14.5
5.06
5.94
16.7
14.7
4.69
9.63
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0 . 2
1.1
0
0
0
0 . 3
0 . 3
-0.71+
-4.0
-2.5
-7.24
-8.24
-8.45
-34.0*
-29.7*
-11.1
-8.62
-23.3*
-12.7
-5.69
-10.5
-49.97*
-8.41
-15.6
-14.5
-7.91
-10.6
-7.83
-0.2
0 . 3
1.3
0.54
0.88
3.4*
2.4*
0 . 2
1.9
1.8*
-0.46
0.59
0.84
7.49*
1.9
4.27
3 . 3
1.3
2 . 6
1.3
4.19
2 . 1
5.90
7.70
7.57
30.6*
27.2*
10.9
6.70
21.5*
13.1
5.11
9.71
42.48*
6.53
11.3
11.2
6.65
8.04
6.57
245.16
B
0.02
-0.04
0.15
0.23
0.07
0.11
0.22
0.07
-0.04
0.27
0.02
-0.02
0.02
C.29
0.12
0.11
0.01
-0.03
0.12
0.09
0.13
0.16
0.24
0.29
0.38
0.30
0.19
0.32
0.19
* 1cm
0.17
0.09
0.24
0.31
0.31
1.24*
1.10*
0.44
0.27
0.87*
0.53
0.21
0.39
1.72*
0.26
0.46
0.45
0.27
0.33
0.27
9.93
* cumulative figure
S= -0.71 for ail dates
- 5 -
TABLE II
Daily Energy Budget, June 1975
Date
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Total
g NR P S R -H -LE
MJ -m"2
158.5
166.5
162.1
168.9
157.8
-
-
151.1
156.9
163.2
171.1
163.3
164.7
166.2
174.1
175.1
178.5
182.1
178.1
183.6
188.6
197.0
191.9
193.5
193.2
198.5
-
199.0
-
201.3
-2.8
8.03
-4.48
6.86
-11.1
-6.70*
5.32
6.24
7.95
-7.87
1.4
1.5
7.95
1.0
3.4
3 . 6
-4.0
5.48
5.02
8.41
-5.15
1.6
-0.3
5.36
0.50*
2.3*
13.9
16.0
12.7
15.2
5.65
5.36
3 . 5
14.3
19.7
20.3
16.7
2 . 6
10.1
11.1
15.4
12.1
13.0
14.1
15.3
19.9
18.0
18 1
16.7
15.7
18.0
18.7
17.7
15.0
19.2
16.9
0.42
0
0
0
0.71
2 . 6
0.08
0 . 3
0
0
0 . 3
0 . 1
0.08
0.08
0 . 2
0
0.08
0
0
0
0
0
0
0
0
0
0
0
0
0
-0.46' -16.7
-7.74
-16.7
-7.91
-17.0
-31.5*
-13.4
-13.6
-8.62
-10.2
-8.37
-9.25
-7.16
-10.6
-9.21
-10.0
-18.8
-14.0
-12.5
-9.25
-21.4
-13.7
-17.8
-12.9
-31.3*
-32.9*
4.35
1.9
4 . 1
1.8
4 . 1
9.54*
3 . 6
2 .4
1 .2
2 .9
0 . 2
1.9
0 . 4
3 . 3
0 . 1
1.2
2 . 8
3 . 1
2 . 3
1.0
1.9
? . l
3 .9
2 . 3
4.35*
5.82*
12.3
5.82
12.6
6.11
12.9
21.9*
9.79
11.2
7.45
7.28
8.16
7.32
6.78
7.28
9.08
8.79
16.0
10.8
10.2
8.20
19.5
10.6
13.9
10.6
2b.y*
27.1''
308.7
0.35
0.33
0.33
0.29
0.32
0.42
0.54
0.34
0.37
0.21
0.16
0.40
0.02
0.26
0.05
0.46
0.01
0.14
0.18
0.28
0.22
0.13
0.10
0.29
0.28
0.23
0.17
0.15
0.23
0.20
E
cm
0.50
0.24
0.51
0.25
0.52
0.89*
0.40
0.45
0.30
0.30
0.33
0.30
0.27
0.29
0.37
0.35
0.65
0.44
0.41
0.33
0.79
0.43
0.56
0.43
1.09*1
1.10*
12.50
* cumulative figure
S = -0.46 for ail dates
- 6 -
TABLE I I I
Daily Energy Budget, July 1975
Date
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
21
24
25
26
27
28
29
30
31
Total
Q AQ NR P
-
200.9
198.5
198.0
202.9
205.4
205.8
203.0
-
195.5
191.5
193.1
200.3
-
-
200.2
204.8
209.9
204.4
197.3
194.1
195.6
202.9
188.3
179.8
-
184.9
173.1
182.8
186.1
199.2
-0.3*
-2.4
-0.50
4.90
2 . 5
0.42
-2.8
-7.57*
-4.0
1.6
7.20
-0 .1*
4.69
5.10
-5.57
-7.03
-3.2
1.5
7.24
-14.6
-8.45
5.06*
-11.8
9.70
3 .3
13.1
18.5
14.6
17.3
14.6
19.5
15.6
17.2
12.9
14.4
16.4
7.28
14.4
13.4
10.1
14.8
15.3
18.1
15.2
3 . 8
6.95
12.7
15.2
16.6
2 . 6
5.06
17.2
4 . 1
9.17
19.3
15.6
17.8
0
0.42
0
0
0
0.50
0.54
0
0
0.08
0.17
0
0
0.08
0
0
0
0
0.6:1
0 . 3
0
0 . 1
0
1 .2
0
0 . 2
0.63
0
0
0
0
S R -H -LE
MJ'rrT2
-0.42
-32.9*
-19.3
-14.7
-14.2
-13.2
• 16.9
-15.2
-37.7*
-11.0
-12.3
-5.82
-39.2*
-13.0
-9.71
-9.54
-13.9
-15.5
-13.5
-8.96
-18.0
-13.1
-16.2*
-20.5
-9.12
-11.8
-4.27
5.27*
3 . 6
2 . 6
2 . 0
2 . 1
2 . 6
2 . 2
7.49*
2 . 8
2 .7
0.75
6.53*
0.92
0.92
2 . 2
2 . 2
3 .7
2 . 0
1.1
3 .0
3 .6
3.9*
4.90
0.88
0.30
0 . 3
27.7*
15.6
12.1
12.3
11.1
14.3
13.1
30.2*
8.24
9.67
5.06
32.6*
12.1
8.79
7.37
11.7
11.8
11.5
7.83
15.0
9.50
12.3*
15.7
8 .2
11.0
4 . 0
338.6
0
0.20
0.18
0.23
0.22
0.16
0.19
0.18
0.16
0.26
0.24
0.34
0.28
0.14
0.25
0.23
0.13
0.09
0.11
0.29
0.19
0.32
0.18
0.14
0.20
0.38
0.17
0.44
0.31
0.10
0.07
0.07
E
cm
1.12*
0.63
0.49
0.50
0.45
0.58
0.53
1.22*
0.33
0.39
0.21
1.32*
0.48
0.36
0.30
0.47
0.48
0.46
0.32
0.61
0.39
0.50*
0.63
0.33
0.45
0.16
13.71
* cumulative figure
S= -0.42 for all dates
- 7 -
TABLE IV
Daily Energy Budget, August 1975
Date
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Total
P
_
-
-
184.8
190.8
183.1
183.1
-
187.2
190.7
191.0
193.7
188.5
189.5
189.0
194.0
184.8
179.8
174.1
171.1
171.0
165.9
173.1
171.7
174.7
178.3
177.7
179.6
172.3
172.7
167.8
AQ
-14.4*
6.03
-7.78
0
4.1*
3 . 5
0 . 3
2 . 7
-5.11
0.96
-0.46
4.90
-9.12
-5.02
-5.65
-3.]
-0.04
-5.11
7.24
-1.4
3 .0
3 . 6
-0.63
1.9
-7.32
0.46
-4.90
NE
16.5
14 6
9.50
11.2
14.3
8 .0
16.5
16.6
9.rj4
16 ,9
13 .0
15.3
5.15
15.1
8.79
14.4
4.56
11.6
11.0
14.1
3.26
13.5
13.7
5.06
12.3
6.32
12.2
12.4
-0.4f
10.3
11.9
T—L
P
0
0
1.0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0 . 4
0
0
0
0.67
0
0
0
0.04
0
0 . 1
S
MJ'm"2
-0.08
- 6 6
- 8
- 1 5
- 1 6
- 2 1
- 1 3
- 1 0
- 1 2
- 1 0
- 1 4
- 9
- 9
- 1 3
- 1 6
- 1 6
- 1 7
- 3
- 1 8
- 6 .
- 6 .
- 9 .
- 2
-12.
-10.
- 6 .
- 9 .
-16.
R
.83*
.20
.7
.4
. 8 *
.4
.6
.6
.2
.0
.17
.50
6
6
6
1
6
5
36
40
88
6
8
4
82
75
9
8
1
5
3
1
1
2
2
1
2
1
1
2
4
4
4
0
4
1
1 .
~6.
0 .
2 .
2 .
2 .
2 .
2 .
-H
.50*
. 7
.15
.5
. 3 *
. 1
. 1
.1
. 8
.8
.8
. 2
.3
0
.35
19
84
69
1
7
07
50
8
0
1
1
0
-LE
58.34*
6.49
10.5
12.9
20.5*
12.2
8.58
10.5
o -V
11.3
7.41
8.29
11.3
12.6
12.3
12.9
2 . 8
13.9
5.27
4.69
15.9
2 . 1
9.96
8.41
4.69
7.70
14.9
314.8
0
0
0
0
0
0
0
0
- 0
0
0
0
0
0
0
0
0
0
0
0
0
0 .
0 .
0 .
- 0 .
0 .
0 .
0 .
0 .
0 .
0 .
s
.12
.10
.14
.22
.27
.49
.27
.20
.07
.09
.24
.20
. 2 1
. 2 5
.24
.15
20
32
35
32
31
34
20
36
38
23
28
23
46
26
13
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0 .
0 .
0 .
0 .
1 2 .
E
cm
.36*
.26
. 4 3
.52
.83*
.49
.35
.42
.34
.46
.30
.34
.46
. 5 1
.50
.52
11
56
21
19
65
09
40
34
19
31
60
75
•cumulative figure .08 for ail dates
TABLE V
Daily Energy Budget, September 1975
Date
1
2
3
4
5
6
7
8
9
1 0
11
12
1 3
1 4
15
1 6
1 7
18
19
20
21
22
23
24
2 5
26
27
2 8
29
30
Total
161
149
-
151
151
-
144
139
129
1 3 2
138
1 3 0
1 2 4
124
131
133
1 3 6
132
134
133
132.
129.
124
120.
117.
119.
118.
118.
124.
123.
i?
. 1
. 5
. 6
. 8
.2
.4
. 8
. 9
.6
. 9
. 1
9
4
0
0
7
6
1
6
1
8
9
3
1
5
0
6
5
-6.86
-11.6
2.1*
0 . 2
-7.61*
-4.77
-9.67
3 . 1
5.73
-7.70
-6.78
-0.84
6.49
1.6
3 .0
-3.3
1.9
-1.5
-0.50
-3.5
-4.35
-3.9
-3.6
1.8
-0.59
0.50
6.57
-1.1
NR
-0.96
-1.3
8.70
8.75
10.3
0.67
11.1
7.03
8.08
7.03
7.32
8.70
6.03
6.70
12.0
8.70
5.57
1.5
2 . 3
1 . 3
4.52
3 . 6
4.31
4.73
4.90
2 . 5
2 . 2
9.50
8.91
3 . 0
P
0.1
0
0
0
0 . 1
0.08
0 . 1
0.08
0
0
2 . 2
0.04
0 . 1
0
0
0
0
0.50
0 . 2
0 . 3
0.08
0.08
0
0
0 . 1
0
0
0
0.08
0.04
S
MJ-m"2
0.2 + - 6
- 1 0
- 1 5
- 1 0
- 1 9
- 1 2
- 1 8
- 4
- 4
- 1 6
- 1 3
- 7
- 5
- 7
- 2
- 5
- 0
- 3
- 5
- 7 .
- 8 .
- 8 .
- 8 .
- 0 .
- 3 .
- 9 .
- 2 .
- 4 .
R
.24
. 5
. 8 *
. 5
. 8 *
. 1
. 0
. 1
. 0
.7
. 1
. 7 4
. 73
28
8
5 7
75
3
3 1
32
87
8 3
8 7
88
0
2 1
64
35
- H
2 . 0
2 . 6
3.6*
1.8
6.07*
2 . 7
6.15
0.80
-0.88
5.40
5.06
2 . 4
0 . 1
0 . 2
0.92
1.7
0 . 3
1 .1
1.5
2 . 6
2 . 6
2 . 1
2 . 8
0 . 2
0.63
2 . 1
0.63
1.4
4
7
12
8
13
9
11
3
4
11
8
5
5
7
1
3
0
2
3
4
6
6
6
0 .
2 .
7 .
2 .
2 .
164.
- L E
.27
. 9 1
.2*
. 6 2
. 8 *
.37
• 8
.4
.73
. 3
. 0 8
. 36
. 6 1
. 0 7
.9
.9
.50
1
9
77
32
7 0
0 3
71
34
0 7
0
9
6
0
0
0
0
0
0
0
0
0
- 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0 .
0 .
0 .
0 .
0 .
0 .
e
.47
. 3 3
. 2 9
-
. 2 1
. 6 2
.26
.29
.52
.21
.16
.48
. 6 3
. 4 4
. 0 2
. 0 3
. 4 8
.45
46
52
38
54
41
3 2
4 7
21
27
30
32
49
E
cm
0.17
0.32
0.50*
0.35
0.56*
0.38
0.48
0.14
0.19
0.46
0.33
0.22
0.23
0.29
0.08
0.16
0.02
0.09
o.ie
0.19
0.26
0.27
0.24
0.03
0.10
0.29
0.08
0.12
6.66
•cumul,
+ S = 0
ative figure
.2 for ail dates
- 9 -
TABLE VI
Daily Energy Budget, October 1975
Date
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Total
115
102
99
95
102
96
95
93
93
89
91
92
97
77
75
7 3 .
7 5 .
7 4 .
7 9 .
8 2 .
9 2 .
8 6 .
8 1 .
8 1 .
8 2 .
7 2 .
5 8 .
5 0 .
0
. 3
.4
. 1
.8
.4
.22
.42
.42
.00
.90
40
15
88
58
78
58
18
55
32
42
42
35
91
61
9 1
31
41
63
Ù
- 7
- 1 2
- 3
- 3
6
- 6
-0
- 2
- 0
- 3
1
0
5
-20
- 1 .
- 2 .
1 .
- 0 .
4 .
3 .
1 0 .
- 6 .
- 4 .
- 0 .
1 .
-10.
-13.
~7
p
. 57
.9
. 3
. 3
.61
.19
.8
.0
. 4 2
1
5
75
73*
3*
8
2
6
63
77
1
0
07
44
3
3
6
9
78
NR
-0.63
2 . 3
3 . 3
7.41
8.20
1.7
6.19
5.19
6.24
0 . 3
0.88
3.9
-0.50
7.74
-0.54
0 . 3
3 .6
3 .7
1.6
0.08
~5.52
6.24
3 . 1
4.27
-1.6
3 . 5
2 .9
5.82
-0.4
-0.71
1.7
P
0 . 1
0
0
0
0
0
0
0
0 . 2
0 . 3
0.84
0
0.54
0 . 3
0 . 3
0
0
0
0 . 2
0 . 2
0
0.08
0
0
0
0
0
0
0
0
0
S R
MJ'm"2
0.50+ -7.57
-15.7
-7.11
-11.2
-2.1
-8.37
-7.53
-7.66
-7.32
-4.31
-0.71
-3.6
-3.4*
-24.4*
-5.98
-4.52
0.84
-6.65
-2.1
-0.50
5.27
-5.02
-8.45
-3.7
-5.06
-10.8
-13.6
-10.0
-H
2 . 6
6.53
2 . 2
3 . 3
-0.2
2 . 6
2 . 6
0.59
1 .3
1.8
0 . 3
0.67
1.3*
9.25*
1.1
0.75
-0.4
1.1
0.08
0.04
-20.8
1.0
3 .0
1.0
-0.54
3 .7
6.86
4.39
4
9
4
7
2
5
4
7
6
2
0
2
2
15
4
3
- 0
5
2
0
15
4 .
5 .
2 .
5 .
7 .
6 .
5 .
4 5 .
-LE
.94
.21
.90
.87
. 3
.73
.94
.07
.07
.5
.46
.9
. 1 *
. 1 *
85
8
46
52
0
46
5
0
48
7
61
07
77
61
1
0
0
0
0
-0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
- 1 .
0 .
0 .
0 .
- 0 .
0 .
1 .
0 .
e
.53
.71
.45
.43
.10
.47
.53
.08
.21
.73
.55
. 2 3
. 7 1
.50
.61
.63
. 6 1
23
20
84
20
03
06
34
26
54
36
10
52
01
78
E
cm
0.20
0.37
0.20
0.32
0.09
0.23
0.20
0.23
0.25
0.10
0.02
0.12
0.09*
0.61*
0.20
0.15
-0.02
0.23
0.08
0.02
0.63
0.]<3
0.22
0.11
0.23
0.29
0.27
0.23
5.88
*cumulative figure
S = 0.50 for ail dates
- 10 -
TABLE VII
Daily Energy Budget, November 1975
Date
1
2
3
4
5
6
7
8
9
10
.11
12
13
14
15
16
17
18
19
20
21
22
Total
Q NR P S R -H -LE
MJ-nT2
_
55.40
58.50
59.80
-
61.90
70.10
66.30
70.86
f-7.06
60.57
58.47
45.17
30.5
31.0
-
32.3
29.7
29.3
-
21.3
17.4
4.90*
3 . 1
1 .3
2.1*
8.20
-3.8
4.56
-3.8
-6.49
-2.1
-13.3
-14.7
0.50
1.5*
-2.8
-0.42
-7.91*
-3.9
0.46
2 .9
3 . 6
2 . 1
1.8
4.65
2 . 8
-0.2
2 . 3
-0.54
2 . 3
0 . 3
-2.1
-1.7
3 . 3
1.0
3 . 0
2 . 2
-0.92
0
-0.75
-1.7
0 . 1
0
0
0
0
0
0
0.04
0
0.71
0
0
0
0
0
0
0
0
0
0
0
0
0.50
0.46*
-1.0
-1.3
-5.36*
4.90
-4.1
1.7
-4.48
9.33
-2.9
-11.7
-13.5
-3.3
-3.6*
-5.57
0
-7.66*
-2.7
i
-0.2*
-0.50
-0.2
0.92*
-2.3
-0.50
-0.2
-4.43
3 . 5
1.0
4.69
6.11
0.71
0.3*
-0.3
0
3.9*
1.6
-0.3*
1.5
1.5
4.44*
-2.6
4.65
-1.5
8.96
5.28
1.9
6.99
7.37
2 . 6
3.3*
5.86
0
3.7*
1.1
55.66
0
0.91
0.05
-0.34
-0.13
0.40
0.02
0.92
-0.11
0.12
-0.50
0.49
0.55
0.67
0.83
0.27
0.48
-0.33
-0.05
0.79
0.75
1.38
1.47
1
E
cm
-0.01*
0.06
0.06
0.18*
-0.10
0.19
-0.06
0.36
0.25
0.08
0.28
0.30
0.10
0.13*
0.24
0
0.15*
0.04
2.25
•cumulative figure
S = 0.50 for a l l dates
- 11 -
TABLE VIII
Ten-Day Average Values for 1975
Period
May 4-1112-2021-31
June 1-1011-2021-30
July 1-1011-2021-31
August 1-1011-2021-31
September 1-1011-2021-30
October 1-1011-2021-31
November 1-1011-22
440
021
- 000
- 0- 2- 0
—3- 0 .- 0 .
- 3 .- 1 .- 2 .
.69.44.4
. 2
. 1
. 8
.59
.2
.5
8403
5188
352
1.7- 4 . 1
131412
121317
16
NR
. 5
.6
. 8
. 7
.0
.4
. 111.912
1311
9
564
422
2 .0 .
. 3
.4
. 1
.12
.940 377
018
042
0
00
000
0
0
000
00
0 .
p
00
. 2
.4
. 0 80
. 2
. 1
. 2
. 0 80
. 1
.04304
0 830
080
MJ
s•m"2
-0 .71- 0- 0
- 0- 0- 0
- 0- 0-0
- 0- 0- 0
000
0 .0 .0 .
0 .0 .
. 7 1
. 7 1
.46
.46
. 4 6
. 4 2
. 4 2
. 4 2
. 0 8
.08
.08
222
555
55
- 8- 9
- 1 1
- 1 2- 1 0- 1 5
- 1 6- 1 1- 1 1
- 1 4- 1 3
- 9
- 9- 6- 5
R
.08. 5.9
.5
.6
.2
. 4
. 5
.9
. 2
.0
.46
.7179
-7.81- 4- 5 .
- 0 .- 5 .
3148
9206
-H
002
312
212
221
211
21 .
r
- 0 .i .
. 8
.7
. 1
. 2
.7
.5
. 8
.9
. 2
. 1
.6
. 3
666
33
758
-LE
789
98
12
1399
1210
8
754
5 .2 .5 .
1 .3 .
. 2 8
. 8 3
.79
. 2 5
. 9 1
. 7
.6
.54
. 7 1
. 1
. 32
160627
57952
73
rE
cm d
000
000
000
000
000
0 .0 .0 .
0 .
.29
.36
. 1
. 3 7
. 3 6
. 5 1
.56
.39
. 3 9
.49
.42
. 3 3
29217
231222
070.13
- 12 -
TABLE IX
Ten-Day Average Values for 1970-75
Per iod
May 1-1011-2021-31
June 1-1011-2021-30
Ju ly 1-1011-2021-31
August 1-1011-2021-31
September 1-1011-2021-30
October 1-1011-2021-31
November 1-1011-22
No. ofobservation
234
433
466
665
444
432
11
AQ
i
3 .92 . 51.6
0.922 . 50.75
1.0-0.6 3
0 . 5
-0.67-1.7-0.96
-0.54-1.7-1.7
-2.2-3.80.08
1 .7-4.1
NR
MJ'
11.811.013.9
13.513.913.6
13.411.512.1
11.8. 11.1
9.37
7.875.314.27
4 . 02 . 12 . 7
2 . 00.42
-H
m - 2
0.841 . 82 . 6
2 . 92 . 02 . 4
2 . 12 . 22 . 2
2 . 32 . 41.9
2 . 12 . 01 .7
1.62 . 1
-0.2
-0.75-1.8
-LE
6 . 76.659.08
9.589 . 0
10.0
10.39.799.21
10.39.428.62
6.495.484.69
4.944.313.39
1.73 . 3
E
mm. d
3 .0
3 .9
3 .9
3.8 !i
2 . 2
1.7 :
i1 n i1 . U ,
- 13 -
WATER BUDGET
Terms of the water balance equation:
A S = I - O + P - E ± G
were measured as before and ground water flows estimated[2]. Results for the summer and winter months of 1975 andmeans of all available data are given in Tables X and XI.The high value for February and low one for March may beexplained by a February thaw which was followed by very coldweather in March.
TABLE X
Summer Ground water Flow, m m d-1
1975
Mean (1970-75)
1975/Mean (1970-75)
May
2
2
0.
.3
4
96
June
2
2
0
.1
.8
.75
July
1
1
0
.2
.5
80
August
0
1
0
.7
2
58
September
1
1
0.
.0
4
71
October
1
1.
1.
8
7
06
1975
Mean (19TD-75)
TABLE XI
Winter Ground water Flow,
January
0.3
0.5
February
3.0
1.0
March
1.1
2.2
mm-d
April
2.4
4.7
November
-0.5
2.2
December
1.6
0.7
- 14 -
The water budget for the whole year along with six-year average values is given in Table XII. The summer of1975 was exceptionally hot and dry, the precipitation being78% of the average as shown in the last column of Table XII.Note that while surface inflow during 1975 was only 62% ofthe six-year average, the ground water flow was 85% ofaverage. The evaporation rate was 6% higher than the average.
TABLE XII
Perch Lake water Budget
I.
II.
III.
IV.
V.
Component
Surface inflows
Inlet #1#2#3#4#5
Total
Precipitation(direct)
Total
Surface outflow
Net inflow
Evaporation
Ground water inflow
Daily equivalent
1975 Flow
3 -1 ln5m • a x 10
1.66.50.90.60.2
9.8
2.9
12.7
11.9
0.8
- 3.4
2.6
Mean flow
3 -1 ,„£m : a x 10
2.410.41.70.80.4
15.7
3.7
19.4
19.3
0.1
- 3.2
3.1
1970-75
cm a
53.3230.937.717.88.9
348.5
82.1
430.6
428.4
2.2
71.0
68.8
0.19 cm d"1
1975/Mean
0.670.630.530.750.50
0.62
0.78
0.65
0.62
0.66
1.06
0.84
- 15 -
The tritium concentrations of ground water input toPerch Lake was calculated as before [2] from water budgetterms combined with stream and lake tritium concentrationsand evaporation rates estimated as described by Prantl[4]. Results are shown in Figure 3. Table XIII gives theground water input of tritium from May 1969 to November1975.
TABLE XIII
Ground water Tritium to Perch Lake, Ci*
Year
-69
1969-70
1970-71
1971-72
1972-73
1973-74
1974-75
WinterNovember to April
65
213
100
188
77
84
SummerMay to October
112
154
90
175
78
164
106
Total
219
2 93
275
266
241
190
*1 Ci = 37 GBq
- 16 -
CONCLUSION
The 1975 energy budget record is the most complete todate and demonstrates the significance of lake storagechanges to the evaporation rates in spring and fall, waterbudget terms are generally lower than the six-year averagedue to the hot dry season. The annual input of tritiumto Perch Lake via ground water is decreasing.
REFERENCES
[1] Barry, P.J. and E» Robertson. 1975. The energy bud-get of Perch Lake, pp. 375-415 in Hydrological Studieson a Small Basin on the Canadian Shield (Edited byP.J. Barry). Atomic Energy of Canada Limited, ReportAECL-5041/II.
[2] Barry, P.J., E. Robertson and D.P. wildsmith. 1975.Use of the water budget to determine the ground waterinput to Perch Lake, pp. 557-576 in HydrologicalStudies on a Small Basin on the Canadian Shield (Editedby P.J. Barry). Atomic Energy of Canada Limited, Re-port AECL-5041/II.
[3] Robertson, E., D.P. Wildsmith and P.C. Jay. 1976.Energy, water and tritium budgets for Perch Lake: 1974.Atomic Energy of Canada Limited, Report AECL-5380.15 pp.
[4] Prantl, P.A. 1974. Isotope balances for hydrologicalsystems. Part I. Isotope evaporation studies withtritiated water in the laboratory. J. Pure & AppliedGeophysics (Italy) 112: 209-218.
- 17 -
5 - D A Y M E A NN E T R A D I A T I O N
1 0 0 0
200
150
100
120 1 5 0 180 2 1 0 2 4 0 2 7 0 3 0 0M A Y J U N E J U L Y A U G . S E P T . O C T . N O V .
Figure 1. Heat content of lake and five-day running meannet radiation and air temperature for 1975.
- 18 -
300
200
100
- - 100
- 2 0 0
- 3 0 0
NETRADIATION
\
CHANGE IN STORAGE-s
SENSIBLEHEAT
EVAPORATION
120 150 180L_
210 240 270 300
MAY JUNE JULV AUGUST SEPTEMBEH OCTOBER NOVEMBER
-15
-10
-5
--5
- - 1 0
-1 5
Figure 2. Ten-day average values of components of lakeenergy budget for 1975.
- 19 -
20.000
o.•o
5.000
10.000
o
5.000
N I D I J I F I M I A I M I J ' J T T T s T o T
Figure 3. Mean monthly concentration of HTO in groundwater entering Perch Lake from November 1974to October 1975.
- 21 -
APPENDIX
- 23 -
TABLE I
Daily Energy Budqet, May 1975
Date
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
2 1
22
23
24
25
26
27
28
29
30
31
Tota l
Q
1902
2017
2090
2174
2369
2571
-
-
2799
-
-
3229
3112
3244
-
-
3694
3756
3996
4155
-
-
4112
4041
3794
3828
3973
3822
3855
AQ
+115
+ 73
+ 84
+195
+2 02
+228
+430
-117
+132
+450
+ 62
+240
+15 9
- 43
- 71
-247
+ 34
+145
-151
+ 33
NR
4 1 5
228
149
2 74
4 0 9
4 2 1
399
4 0 0
2 92
393
432
365
165
355
4 3 0
372
255
382
393
428
4 4 1
4 0 9
347
121
142
399
3 5 1
112
230
P S
cal-cm
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5
26
0
0
0
7
7
- 1 7
- 1 7
- 1 7
- 1 7
- 1 7
- 1 7
- 1 7
- 1 7
- 1 7
- 1 7
- 1 7
-17
- 1 7
- 1 7
- 1 7
- 1 7
- 1 7
- 1 7
- 1 7
- 1 7
- 1 7
-17
- 1 7
- 1 7
- 1 7
- 1 7
- 1 7
- 1 7
- 1 7
R
•CT1
- 96
- 59
-173
-197
-202
-812
-709
-265
-206
-556
-303
-136
-2 52
-1194
-201
-372
-348
-189
-253
-187
-H
- 4
8
32
13
2 1
8 1
58
5
46
42
- 1 1
14
20
179
45
102
80
30
61
30
-LE
100
51
141
184
181
7 3 1
6 5 1
260
160
514
314
122
232
1015
156
270
2 6 8
159
192
157
858
0
0.02
-0.04
0.15
0.23
0.07
0.11
0.22
0.07
-0.04
0.27
0.02
-0.02
0.02
0.29
0.12
0.11
0.01
-0.03
0.12
0.09
0.13
0.16
0.24
0.29
0.38
0.30
0.19
0.32
0.19
E
cmI
: 0.17
' 0.09
0.24
0.31
0.31
f l .24
1{ri.io
U0.44
0.27
(0.87
10.53
0.21
0.39
)'1.72
0.26
0.46
0.45
0.27
0.33
0.27
9.93
- 24 -
TABLE I I
Daily Energy Budget, June 1975
Date
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Total
Q
3788
3980
3873
4037
3771
-
-
3611
3750
3898
4088
3900
3933
3968
4158
4182
4263
4350
4255
4386
4506
4707
4584
4622
4613
4741
4753
-
4807
AQ
- 67
+192
-107
-164
-266
-160
+139
+149
+190
-188
+ 33
+ 35
+190
+ 24
+ 81
+ 87
- 95
+131
+120
+201
-123
+ 38
- 8
+128
+ 12
+ 54
NR
333
388
304
364
135
128
84
342
471
484
399
63
242
265
367
289
310
336
366
475
42 9
433
399
376
42 9
448
42 3
358
459
403
P S
cal-cm"2
10
0
0
0
17
62
2
7
0
0
8
3
2
2
5
0
2
0
0
0
0
0
0
0
0
0
0
0
0
0
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
R
d-1
-399
-185
-400
-189
-407
-752
-321
-324
-206
-243
-200
-221
-171
-254
-220
-238
-450
-333
-2 98
-221
-511
-327
-426
-309
-747
-76S
-H
104
46
99
43
99
228
87
57
28
69
5
46
9
80
3
28
67
74
54
25
46
73
93
56
104
139
-LE
295
139
301
146
308
524
2 34
267
178
174
195
175
162
174
217
210
383
259
244
196
465
2 54
333
253
643
647
7376
3
0.35
0.33
0.33
0.29
0.32
0.42
0.54
0.34
0.37 ;
0.21
0.16
0.40
0.02
0.26
0.05
0.46
0.01
0.14
0.18
0.28
0.22
0.13
0.10
0.29
0.28
0.23
0.17
0.15
0.23
0.20
E
cm
0.50
0.24
0.51
0.25
0.52
I[ 0.89
J0.40
0.45
0.30
0.30
0.33
0.30
0.27
0.29
0.37
0.35
0.65
0.44
0.41
0.33
0.79
0.43
0.56
0.43
/ 1.09J?V l.io
12.50
- 25 -
TABLE I I I
Daily Energy Budget, July 1975
Date
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Total
Q
-
4801
4744
4732
4849
4908
4918
4852
-
4671
4575
4614
4786
-
-
4783
4895
5017
4884
4716
4640
4675
4848
4498
42 96
-
4417
4135
4367
4447
4760
AQ
- 6
- 57
- 12
+117
+ 59
+ 10
- 66
-181
- 96
+ 39
+172
- 3
+112
+122
-133
-168
- 76
+ 35
+173
-350
-202
+121
-282
4-232
+ 80
+313
NR
441
350
413
350
467
373
410
308
345
393
174
344
321
242
353
366
433
364
90
166
304
364
397
61
121
410
98
219
460
372
425
P
cal
0
10
0
0
0
12
13
0
0
2
4
0
0
2
0
0
0
0
15
8
0
3
0
28
0
5
15
0
0
0
0
s
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
R
-787
-460
-352
-340
-316
-403
-364
-901
-264
-295
-139
-936
-311
-232
-228
-332
-370
-322
-214
-42 9
-313
-387
-491
-218
-282
-102
-H
126
87
63
47
51
62
52
179
67
64
18
156
22
22
52
53
89
48
27
71
86
92
117
21
19
7
-LE
661
373
289
2 93
265
341
312
722
197
231
121
780
289
210
176
279
281
274
187
358 '
227
2 95
374
197
263
95
8090
3
0.20
0.18
0.23
0.22
0.16
0.19
0.18
0.16
0.26
0.24
0.34
0.28
0.14
0.25
0.23
0.13
0.09
0.11
0.29
0.19
0.32
0.18
0.14
0.20
0.38
0.17
0.44
0.31
0.10
0.07
0.07
E
cm
1.12
0.63
0.49
0.50
0.45
0.58
0.53
( 1.22\
0.33
0.39
0.21
"l.32
J
0.48
0.36
0.30
0.47
0.48
0.46
0.32
0.61
0.39
^0.50)
0.63
0.33
0.45
0.16
13.71
- 26 -
TABLE IV
Daily Energy Budget, August 1975
Date
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
2 1
22
23
24
2 5
26
27
28
29
30
31
Total
Q
_
-
-
4415
4559
4373
4373
-
4472
4556
4564
4628
4506
4529
4518
4635
4417
42 97
4162
408 9
4088
3 966
4139
4105
4177
4264
4249
4295
412U
4131
4014
AQ
-345
+144
-186
0
+ 99
+ 84
+ 8
+ 64
-122
+ 23
- 11
+117
-218
-120
-135
- 73
- 1
-122
-173
- 34
+ 72
+ 87
- 15
+ 46
-175
+ 11
-117
NR
394
348
227
267
342
191
395
397
228
4 0 5
7.64
366
12 3
360
210
344
109
2 7 8
2 64
3 38
78
323
327
1 2 1
2 94
151
2 92
2 96
- 11
246
285
P S R
cal-cm" • d" 1
0
0
24
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
9
0
0
0
16
0
0
0
1
0
3
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
_2
—2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
-1597
- 196
- 375
- 393
- 522
- 319
- 2 54
- 300
- 243
- 335
- 219
- 227
- 325
- 396
- 397
- 409
- 86
- 443
- 152
- 153
- 236
- 62
- 305
- 248
- 163
- 233
- 403
-H
203
4 1
12 3
84
32
26
4 9
50
42
6 6
42
29
55
9 6
104
100
2 0
112
26
4 1
-145
12
67
47
51
49
47
- L E
13 94
155
2 52
309
490
2 92
205
250
2 0 1
2 6 9
177
198
270
300
2 93
309
66
3 3 1
126
112
381
50
238
2 01
112
184
356
7521
0.12
^.10
0.14
0.22
0.27
0.49
0.27
0.20
-0 .07
0.09
0.24
0.20
0.21
0.25 !
0.24 ;
0.15
0.20
0.32
0.35
0.32
0.31
0.34 :
0.20
0.36
-0.38
0.23
0.28
0.23 J
0.46 j
0.26
0.13
E
cm
1 2.36
J0.26
0.43
0.52
( 0.83
30.49
0.35
0.42
0.34
0.46
0.30
0.34
0.46
0.51
0.50
0.52
0.11
0.56
0.21
0.19
0.65
0.09
0.40
0.34
0.19
0.31
0.60
12.75
- 27 -
TABLE V
Daily Enerqv Budget, September 1975
Date
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
2 1
22
23
24
25
26
27
28
29
30
Total
Q
3850
3574
-
362 3
3627
-
3445
3331
3100
3175
3312
3128
2966
2 946
3101
3140
3211
3131
3177
3141
3129
3046
2 942
2849
2762
2806
2792
2804
2961
2935
AQ
-164
-276
+ 49
+ 4
-182
-114
-231
+ 75
+137
-184
-162
- 20
+155
+ 39
+ 71
- 80
+ 46
- 36
- 12
- 83
-104
- 93
- 87
+ 44
- 14
+ 12
+157
- 26
NR
- 23
- 30
2 0 8
209
246
16
2 6 6
168
193
168
175
208
144
1 6 0
287
208
133
36
54
3 1
108
85
103
113
117
60
52
227
213
72
P S R
cal-cm -d
3
0
0
0
3
2
3
2
0
0
52
1
3
0
0
0
0
12
5
6
2
2
0
0
3
0
0
0
2
1
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
-149
-251
-377
-250
-474
-289
-42 9
- 98
- 95
-398
-314
-185
-137
-174
- 67
-133
- 18
- 78 ;
-12 7
-175
-212
-211
-212
- 21
- 71
-220
- 63
-104
- H
47
62
85
44
145
65
147
19
- 21
129
121
5 7
3
5
22
4 1
6
27
3 5
6 1
6 1
51
68
5
15
51
15
34
- L E
102
189
2 9>i
2 0 6
3 2 9
2 2 4
282
8 1
113
269
193
128
134
169
4 5
92
12
51
92
114
1 5 1
160
144
17
56
169
4 8
70
3932
0
0.47
0.33
0.29
-
0.21
0.62
0.26
0.29
0.52
0.21
-0.16
0.48
0.63
0.44
0.02
0.03
0.48
0.45
0.46
0.52
0.38
0.54
0.41
0.32
0.47
0.21
0.27
0.30
0.32
0.49
E
cm
0.17
0.32
( 0.50
0.35
]o 56)
0.38
0.48
0.14
0.19
0.46
0.33
0.22
0.23
0.29
0.08
0.16
0.02
0.09
0.16
0.19
0.26
0.270.24
0.03
0.10
0.29
0.08
0.12
6.66
- 28 -
TABLE VI
Daily Energy Budget, October 1975
Date
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
2 5
26
27
28
29
30
31
Total
Q
2754
2446
2366
2287
2445
22 97
2277
2230
2220
2145
2181
2199
2336
1851
1809
1756
1795
1780
1894
1967
2207
2062
1956
1948
1978
1724
1393
1207
AQ
-181
-308
- 80
- 79
+158
-148
- 20
- 47
- 10
- 75
+ 36
+ 18
+137
-485
- 42
- 53
+ 39
- 15
+ 114
+ 73
+240
-145
-106
- 8
+ 30
-254
-331
-186
NR
- 15
56
78
177
196
40
148
124
149
8
21
92
- 12
185
- 13
8
85
89
39
2
-132
149
73
102
- 37
84
69
139
- 9
- 17
41
P S
cal-cm
3
0
0
0
0
0
0
0
4
8
20
0
13
8
8
0
0
0
4
5
0
2
0
0
0
0
0
0
0
0
0
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
R
•d"1
-181
-376
-170
-268
- 50
-200
-180
-183
-175
-103
- 17
- 86
- 81
-582
-143
-108
+ 20 ;
-159
- 49
- 12
+126
-120
-202
- 89
-121
-2 57
-326
-239
-H
63
156
53
80
- 5
63
62
14
30
43
6
16
30
221
27
18
- 9
26
2
1
-497
25
71
24
-13
88
164
105
-LE
118
220
117
188
55
137
118
169
145
60
11
70
51
361
116
90
-11
132
47
11
371
95
131
65
134
169
162
134
3467
0
0.53
0.71
0.45
0.43
-0.10
0.47
0.53
0.08
0.21
0.73
0.55
0.23
0.71
0.50
0.61
0.63
0.61
0.23
0.20
0.84
0.20
0.03
0.06
-1.34
0.26
0.54
0.36
-0.10
0.52
1.01
0.78
E
cm
0.20
0.37
0.20
0.32
0.09
0.23
0.20
0.29
0.25
0.10
0.02
0.12
f 0.09S> 0.61
J0.20
0.15
-0.02
0.23
0.08
0.02
0.63
0.16
0.22
0.11
0.23
0.29
0.27
0.23
5.88
- 29 -
TABLE VII
Daily Energy Budget, November 197 5
Date
1
2
3
4
5
6
7
a9
10
il
12
13
14
15
16
17
18
19
20
21
22
Total
Q
-
1324
1399
142 9
-
1480
1676
1585
1694
1603
1448
13 98
1080
730
742
-
777
709
699
-
510
417
AQ
+117
+ 75
+ 30
+ 51
+196
- 91
+109
- 91
-155
- 50
-318
-350
+ 12
+ 35
- 68
- 10
-189
- 93
NR
11
69
87
49
44
111
67
- 5
56
-13
56
8
-51
-40
78
25
72
53
-22
0
-18
-41
P S_2
cal•cm
2
0
0
0
0
0
0
1
0
17
0
0
0
0
0
0
0
0
0
0
0
0
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
+12
R
• d-1
+ 11
- 24
- 31
-128
+117
- 99
+ 41
-107
-223
- 70
-279
-322
- 78
- 86
-133
0
-.183
- 64
-H
- 4
-12
- 5
22
-56
-12
- 4
-107
83
25
112
146
17
8
- 7
0
94
38
-LE
- 7
36
36
106
- 61
111
- 37
214
150
45
167
176
61
78
140
0
89
26
1330
J3
0.91
0.05
-0.34
-0.13
0.40
0.02
0.92
-0.11
0.12
-0.50
0.49
0.55
0.67
0.83
0.27
0.48
-0.33
-0.05
0.79
0.75
1.38
1.47
E
cm
-0.01
0.06
0.06
/ 0.18
!
-0.10
0.19
-0.06
0.-J--
0.25
0.08
0.28
0.30
0.10
• 0.13
0.24
0
0.15
0.04
2.25
- 30 -
TABLE VIII
Ten-Day Average Values for 197 5
Period
May 4-1112-2021-31
June 1-1011-2021-30
July 1-1011-2021-31
August 1-1011-2021-31
September 1-1011-2021-30
October 1-1011-2021-31
November 1-1011-22
AQ
+112+106+ 9
+ 4+ 49+ 42
- 14+ 4+ 4
- 20- 47- 7
- 84- 3- 2 1
- 79- 35- 53
+ 40- 99
NR
322350307
303311416
3852852 93
319266218
142144114
965066
4810
P
004
1020
435
203
181
260
20
S R9 1
cal-cm d
-17-17-17
-11-11-11
-10-10-10
- 2- 2- 2
+ 5+ 5+ 5
+12+12+12
+12+12
-193-227-285
-298-253-363
-393-2 74-284
-339-311-226
-232-160-141
-189-103-131
- 22-121
-H
191651
764159
674552
516330
613939
56310
-1843
-LE
1742112 34
221213304
326228232
289247196
171121102
13369
132
4078
E
cm-d~
0.290.360.40
0.370.360.51
0.560.390.39
0.490.420.33
0.290.200.17
0.230.120.22
0.G70.13
- 31 -
TABLE IX
Ten-Day Average Values for 1970-75
Period
May 1-1011-2021-31
June 1-1011-2021-30
July 1-1011-2021-31
August 1-1011-2021-31
September 1-1011-2021-30
October 1-1011-2021-31
November 1-1011-22
No. ofobservation
234
433
466
665
444
432
11
AQ
+93+59+38
+22+59+18
+24-15+12
-16-40-23
-13-41-40
-52-90+ 2
+40-99
NR
cal-
281263333
32233332 5
319275288
282265224
18812 7102
954964
4810
-H -LE
cm ' d
204361
704858
515353
545845
514841
3850
- 5
-1843
160159217
229215240
245234220
246225206
155131112
11810381
4078
E,-1
mm*d
3.0
3.9
3.9
3.8
2.2
1.7
1.0
The International Standard Serial Number
ISSN 0067-0367
has been assigned (o this series of reports.
To identify individual documents in the serieswe have assigned an AECL-number.
Please refer to the AECL-number when
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