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TR-154 


TECHNICAL REPORT 


HARBOR ANALOG SYSTEM 
PART II—TEMPERATURE STRUCTURE 


A. LAWRENCE GRABHAM 


Evaluation Branch 
Oceanographic Analysis Division 
Marine Sciences Department 


JUNE 1963 


U. S. NAVAL OCEANOGRAPHIC OFFICE 
WASHINGTON, D. C. 20390 
Price 80 cents 


ABSTRACT 


This report classifies harbor areas having similar water 
temperature characteristics. The principal predictor is the 
mean monthly air temperature at locations throughout the 
world. A system of classification based primarily on the con- 
tinentality of the area is presented. Factors which cause 
anomalies from the general case are large tidal ranges and 
fresh water discharge from rivers. Within each class, the mean 
air-water temperature difference at the surface (near the 
shore) is presented with standard deviations from the mean 
difference for each month. In addition, data showing vertical 
thermal gradients from the shore seaward are presented for 
the various classes by season. 


ERRATA TO TR-154, PART II-TEMPERATURE STRUCTURE 


line 2, read--current information is not-- 
line Oo yenead=— (reference no. 2il)))ane=— 


p. 4 footnote* line 1, read--the Arctic and-- 
line 5, read--(reference nos. 26 and 27).,-- 
lines 3, 15, and 18, change reference No, 20toreference No, 19. 


p. 3 footnote* 


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line 16, read--.06 to .38**_- 
lines 10and11, read--references 4, 5,6,10,11,15,18,19, and 25, 


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FOREWORD 


This report is a contribution of the Harbor Analog System program 
being pursued by the U. S. Naval Oceanographic Office. Additional 
reports will follow as classification systems are developed for other 


oceanographic characteristics of harbor and nearshore areas. 


Jeane Grate 


KNOLL 
Rear Admiral, U.S. Navy 
Commander 
U.S. Naval Oceanographic Office 


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CONTENTS 


FOREWORD 


FIGURES 


TABLES 


INTRODUCTION 


CLASSIFICATION SYSTEM 


CLASSIFICATION INDEX 


PREDICTION EXAMPLE 


CONCLUSIONS AND COMMENTS 


BIBLIOGRAPHY 


Mal 


15 


Figure 

1 Mean Air 
2 Mean Air 
3 Mean Air 
4 Mean Air 
5 Mean Air 
6 Mean Air 
7 Mean Air 
8 Mean Air 
9 Mean Air 
10 Mean Air 
11 Mean Air 
12 Mean Air 
13 


Temperature 
Temperature 
Temperature 
Temperature 
Temperature 
Temperature 
Temperature 
Temperature 
Temperature 
Temperature 
Temperature 


Temperature 


FIGURES 


- January 

- February 
- March 

- April 

- May 

- June 

- July 

- August 

- September 
- October 

- November 


- December 


Mean Maximum Semi-Monthly Tide Ranges 


Page 
35 
37 
39 
41 
43 
45 
47 
49 
51 
53 
55 
57 


59 


TABLES 


MEAN SURFACE TEMPERATURE DIFFERENCES (AIR-WATER) 


Add mean correction to mean air temperature to obtain mean 


nearshore surface water temperature (ie) or (Eee) 


Table Page 
lf Tropical Climate Class 18 

II Oceanic Climate Class 19 

Ill Sub-—continental Climate Class 20 

IV Continental Climate Class 21 


VERTICAL THERMAL GRADIENTS 


Add mean corrections to surface water temperature to obtain 
water temperature at designated depths 


Vv Tropical Climate Class 22 
VI Oceanic Climate Class 24 
VII Sub-continental Climate Class 26 
VIII Continental Climate Class 28 


HORIZONTAL THERMAL GRADIENTS 


Add mean correction to nearshore surface water temperature (T_ ) 
or (ie) to obtain surface water temperature at designated offshore 


distances. 

IX Tropical Climate Class 30 
xX Oceanic Climate Class 31 
XI Sub-continental Climate Class 32 

XII Continental Climate Class 33 


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HARBOR ANALOG SYSTEM 
Part Il - TEMPERATURE STRUCTURE 


INTRODUCTION 


There are considerable published data concerning the factors 
which affect the surface water temperatures of the oceans, the trans- 
port of heat, and temperature change in the upper layers of the ocean. 
After all of the physical and dynamic processes relating environmental 
factors such as evaporation, radiation, cloudiness, wind velocity and 
turbulence are considered, the useful generality is that a high corre- 
lation between surface air and water temperature can be shown. This 
correlation, better in low latitudes where annual ranges of temperature 
are small, decreases toward higher latitudes. Since fresh water freezes 
at 32°F. and highly saline waters freeze at temperatures between 28° 
and 29°F., it is apparent that mean air temperatures which are colder 
than the sea surface freezing points may differ considerably from the 
water temperatures; however, the utility of mean air temperatures in 
forecasting water temperatures remains high because mean air temper- 
atures below 28°F. for a period of several days will produce ice or 
water temperatures in the range between 28° and 32°F. 


Since one of the main objectives of this report is to estimate the 
surface water temperature in any harbor on earth, it was thought that 
the use of H.O. Publication No. 225, “World Atlas of Sea Surface Temp- 
eratures.'' would be useful in approximating the surface temperature in 
nearshore waters. However, comparison of U. S. Coast and Geodetic 
Survey tide-station temperatures with the isotherms in this publication 
revealed these isotherms to be unreliable in nearshore areas, In con- 
trast, comparison of meanair temperatures fromthe “U. S. Navy Marine 
Climatic Atlas of the World” with surface water temperatures for the 
U. S. Coast and Geodetic Survey tide stations indicated a high corre- 
lation between the mean monthly air temperature and the average 
nearshore surface water temperature for the same month, The air- 
sea temperature difference is least in low latitudes where the annual 
range of mean monthly air temperature is small and becomes greater 
in higher latitudes where the annual range of air temperature increases. 
The average differences were relatively variable where the surface 
water temperature was influenced by fresh water river discharge or 
where tidal ranges were high. Inland water areas such as the harbors 


of Baltimore and Philadelphia showed equally high correlations between 
mean air temperature and surface water temperature whenthe mean air 
temperature data were taken at the same location as the surface water 
temperature data. Local temperature data from climatic summaries of 
the Weather Bureau or similar sources should be used for inland air 
temperature data because landward extension of isotherms from marine 
atlases do not reflect the land-sea thermal discontinuity. 


In areas where cold currents, warm currents, or upwelling are 
persistent, the water temperature modifies air temperatures so that 
climatic air temperature data reflect these phenomena. These factors 
do not cause anomalies from the general case; however, high tidal ranges 
and fresh water river discharge are phenomena which do present 
anomalies in air-water temperature differences from the general case 
of low turbulence and homogeneous salinity. It is very possible that 
upwelling and thermal current advection may cause anomalous situations 
from the general vertical thermal structure. However, in this 
preliminary system development, it is deemed impractical to use 
upwelling and thermal advection currents in the classification system. 


CLASSIFICATION SYSTEM 


By using the CLASSIFICATION INDEX which follows, it is possible 
to classify any harbor in the world according to the following criteria: 


(a) Mean air temperature in the warmest and coldest months, 

(b) An index of continentality as determined by the annual range of 
mean monthly air temperature, 

(c) Tidal range, and 

(d) Presence or absence of fresh water discharge. 


Turbulence influenced by winds and waves, the volume of river 
discharge, the bottom slope, the depth of water, and other minor 
influences probably cause some anomalies from the general case of 
low turbulence and homogeneous salinity. Such environmental influences 
were considered too trivial or impractical to incorporate into a general 
system of classification. Upwelling and horizontal thermal advection 
currents are presumed to be reflected in the mean air temperature for 
any location and are not regarded as classification items. 


The necessary tools needed to classify a harbor according to this 
system are the following: 


(1) Mean air temperatures for each month, (Figures 1 to 12)* 

(2) Tide range tables or charts (Figure 13)** 

(3) Hydrographic charts or maps indicating the presence or absence 
of fresh water influence. 


*Mean air temperatures from Figures |] through 12 should be used 
only when a more detailed atlas or currentinformation are not available. 
Actual averages of air temperatures for two weeks to a month prior to 
the forecast date should be used whenever possible. U.S. Weather 
Bureau data and averaging techniques should give optimum results if 
the air temperature data are representative of the vicinity of the forecast 
point. Climatic data from U. S. Weather Bureau, foreign climatic 
tables and atlases, and ‘‘U. S. Navy Marine Climatic Atlases’’ (Vols. 
I-V) (reference no, 25) are recommended when current information is 
not available. 


**Figure 13 should be used when tide tables or suitable tide range 
analysis is not available. 


CLASSIFICATION INDEX 


1, First Designator: 


z. Second Designator: 


3. Third Designator: 


CONTINENTALITY CLASS 


T - Tropic 

O — Oceanic 

S - Sub-Continental 
C - Continental 

A - Arctic 


The first two numerals indicate the mean 
air temperature to the nearest 1°F. for 
the coldest month of the year (usually 
January or February in the Northern 
Hemisphere and July or August in the 
Southern Hemisphere). 


The second two numerals indicate the 
mean air temperature tothe nearest 1°F. 
for the warmest month of the year (July 
or August in the Northern Hemisphere, 
January or February in the Southern 
Hemisphere). 


The difference between the first and 
second designators is an indication of 
continentality. The Third Designator is 
taken from the following table. 


ANNUAL RANGE OF 


MEAN MONTHLY AIR TEMPERATURE 


Less than 6°F. 

6° to 14°F. 

15° to 35°F. 

Greater than 35°F. 
Greater than 50°F .* 


Css 


*The annual range of mean monthly temperature in the Artic and 
Antarctic is generally greater than 50°F. Water temperatures, air-sea 
temperature differences, ice location and limits, and typical vertical 
thermal structure of the water should be obtained from H. O. Pub. No. 
705, ‘‘Oceanographic Atlas of the Polar Seas’’ (reference no. 26). 


4. Fourth Designator; Tidal Range 


L: Less than 10 feet 
H: 10 feet or greater 

5. Fifth Designator: N: Area not affected by river (fresh 
water) discharge. 

R: Area affected by river (fresh water) 


discharge. 


An example of the use of the CLASSIFICATION INDEX is given 
for Los Angeles. The coldest mean monthly air temperature (See 
Figures 1 to 12) is 55° in January. The warmest mean monthly air 
temperature is 68°F. in July. The tide range as shown by Figure 13 
is less than 10 feet. Available maps show that no fresh water discharge 
affects this area, The 13°F. temperature difference between 68°F. and 
55°F. places this location in the Oceanic Climate Class. The coded 
designation of this area, 5568OLN, identifies the harbor class. With 
the mean air-water temperature difference (See Table II ) for an OLN 
class andthe typical winter and summer vertical temperature differences 
from the surface temperature (See Table VI) for OLN class, an estimate 
of the surface water temperature (T_ or T__)is possible as well as an 
estimate of the 68% confidence interval rough use of the standard 
deviation values from the means. Although information in the tables is 
compiled only for the warmest and coldest months, a suggested method 
of estimation of temperatures at the surface and depth for intermediate 
months is shown under PREDICTION EXAMPLE. It shouldbe noted that 
the surface water temperature (T_ or T__) derived from Tables I to 
IV refers to the surface water very nearshore; whereas, the vertical 
differences are with respect to the surface water temperature (Tw 0) 
above the 30-fathom isobath. The surface water temperature above five 
30-fathom isobath (Tw...) can be estimated by adding the correction (C) 
in Tables IX to XII to “he nearshore surface water temperature (T_ or 
Ta) an 

ms 

Since the C values in Tables IX to XIII do not present values for 
distances greater than 10 nautical miles from the shore, the C value 
at 10 nautical miles should be used to obtain (Tw) when the 30 fathom 
isobath is more than 10 miles offshore. 


PREDICTION EXAMPLE 


The following steps show how a forecast of water temperature is 
made for a harbor near New Orleans at the mouth of the Mississippi 
River. 


STEP I 
List the mean air temperature in this area by months from Figures 


1 through 12 or from ‘‘U. S. Navy Marine Climatic Atlas of the World."' 
Estimate the air temperature to nearest 0.1°F. 


MONTH MEAN AIR TEMPERATURE (°F.) 
Jan 60.0 
Feb 60.0 
Mar 64.0 
Apr 69.8 
May 72.5 
Jun 81.8 
Jul 82.0 
Aug 83.2 
Sep 82.5 
Oct 77.0 
Nov 68.0 
Dec 63.0 

STEP I 


Note the coldest month (January and February) to the nearest 
degree and assign the First Designator from the Classification Index. 


(60) 
STEP Ill 


Note the warmest month (August) to the nearest degree and assign 
the Second Designator from the Classification Index. (83) 


STEP IV 
Subtract the First Designator value from the value of the Second 


Designator to determine the Third Designator from the CLASSIFICATION 
INDEX. (23) This places the harbor in the Sub-Continental category 


(S) according to the CLASSIFICATION INDEX on page 5. 
STEP V 


Consult tide tables or Figure 13 to determine the tidal range in the 
harbor area andassign the Fourth Designator from the CLASSIFICATION 
INDEX. (L) 


STEP VI 


Consult a map or hydrographic chart to determine whether the harbor 
is under the influence of river (fresh water) discharge and assign the 
Fifth Designator from the CLASSIFICATION INDEX. (R). From the 
foregoing steps, this harbor area is classified as 6083SLR, 


STEP VII 

Using Table III and data from Step I, list the surface water 
temperature (T_) and the 68% Confidence Interval of the surface water 
temperature for each month. 


MONTH re Ce (has Oe iy 2 orat, o 68% Confidence Interval 
a Ww a ms w 


Jan 60.0 2.3 62.3 3.7 58.6 to 66.0 
Feb _— 60.0 Bin 62.7 4.6 58.1 to 67.3 
Mar 64.0 1.4 65.4 5.5 59.9 to 70.9 
Apr 69.8 BOM 69.7 353 66.4 to 73.0 
May 75.2 -0.9 74,3 ne TGS G9 Oo) 
Jun 81.8 “Hal 80.7 3.2 77.5 to 83.9 
Jul 82.0 0.0 82.0 2a 79.3 to 84.7 
Aug 83.2 0.9 84.1 3.0 81.1 to 87.1 
Sep 82.5 0.5 83.0 Zul 80.9 to 85.1 
Oct 77.0 0.5 77.5 2.0 75.5 to 79.5 
Nov 68.0 2.5 70.5 2.5 68.0 to 73.0 


Dec 63.0 2.4 65.4 3.4 62.0 to 68.8 


STEP VIII 


Using the most likely value of surface water temperature obtained 
in Step VII and the most likely vertical temperature differences at each 
depth for the coldest month (January) and the warmest month (August) 
from Table VII, the following estimates of the most likely temperatures 
(means) at various depths can be made: 


Depth Jan (°F) Aug (°F) Annual Range (°F) 
Surface 62.3 84.1 21.8 
10 feet 62.4 83.7 21.3 
20 feet 62.5 83.2 20.7 
30 feet 62.6 82.2 19.6 
50 feet 62.6 79.9 17.3 
70 feet 62.8 77.1 14.3 
100 feet 62.7 Uo i 9.4 
150 feet 63.3 70.3 7.0 
180 feet 63.5 70.0 6.5 
STEP IX 


An estimate of the temperatures at each depth may be made for the 
intermediate months of the year by assuming that the seasonal 
temperature change at each depth is proportional tothe seasonal change 
at the surface. These estimates can be made by use of the following 
equation: 

R 


aS Gl (Ge up Vi ge 
m 


aml > Ss Fs ee ea (Equation 1) 


8 


where, 
T__.=temperature at depth (d) for month (m) 
md 

R ,=annual range of temperature at depth (d) 

R_=annual range of temperature at surface 

Ting em erature at the surface (s) for month (m) 

T. =temperature at the surface (s) for coldest month (c), (January 

in this example) 

To g=temperature at depth (d) for the coldest month (m) (January) 
Using Equation 1, an estimate of the most likely temperature at 

the 10-foot depth in March is made as follows: 


Tg=62-4° (Coldest month, January temperature at 10 feet) 
T 702-3" (Coldest month, January temperature at the surface) 
R./R =21.3/21.8=0.977 
di vis 
i055 4° 
ms 
By substitution in Equation l, 
T nd 07917 (65.4° - 62.3°) + 62.4°=0.977(3.1°) + 62.4° = 
3.03° + 62.4° = 65.43° 
T indo” (Most likely temperature at 10 foot depth in March) 
Similarly, an estimate for the 50-foot depth in March using Equation 1 


T =65.4° T =62.3° T .=62.6° 
ms cs cd 


R 4=17.3° R,=21.8° R4/R,=17.3/21.8+=0.793 
ae =0.793 (65.4° - 62.3°) + 62.6° 
md 
Tind 07/93 (3.1°) + 62.6° 
T =2.5° + 62.6° = 65.1 
md 


By use of Equation (1) and the data in Steps VII and VIII, estimates 
of the most probable temperature at the designated depths for each 
month of the year can be computed and tabulated as follows: 


Month Feb Mar Apr Ma Jun Jul Se Oct Nov Dec 
Dep Ae = - — = 


Surface 62.7 65.4 69.7 74.3 80.7 82.0 83.0 77.5 70.5 65.4 
10 feet 62.8 65.4 69.4 74.2 80.4 81.7 82.7 77.3 70.4 65.4 
20 feet 62.9 65.4 69.5 73.9 79.9 81.2 82.2 76.9 70.3 65.4 
30 feet 63.0 65.4 69.3 73.4 79.2 80.3 81.2 76.3 70.0 65.4 
50 feet 62.9 65.1 68.4 72.1 77.3 78.2 79.0 74.6 69.1 65.0 
70 feet 63.1 64.5 67.7 70.7 74.9 75.8 76.4 72.8 68.2 64.8 

100 feet 62.9 64.0 65.9 67.9 70.6 71.2 71.6 69.2 66.2 64.0 

150 feet 63.4 64.3 65.7 67.1 69.2 69.6 69.9 68.2 65.9 64.3 

180 feet 63.6 64.4 65.7 67.1 69.0 69.4 69.7 68.1 66.0 64.4 

STEP X 

Since the (T__) or (T_) represents the surface temperature at 

a point nearshore, corrections are presented in Tables IX, X, XI, 

and XII to obtain the surface temperature (Tw g)above the 30-fathom 

isobath. These corrections are based on ienited data and presented 
to show an ‘‘order of magnitude’’ of horizontal gradients of temperature 
in each of the four climate classes. Where the 30-fathom isobath is 


more than 10 miles offshore, the correction at 10 miles is suggested 
as an approximation of that at 30 fathoms. 


10 


CONCLUSIONS AND COMMENTS 


This is a preliminary report primarily directed at presenting a 
method of classifying harbors and nearshore areas with respect to 
water temperatures, The secondary objective is to present a way of 
estimating the most probable temperatures and thermal structures in the 
various categories. 


One of the shortcomings in this report is the quantity of data used 
in the preparation of Tables I through XII. Data in the form needed to 
compile such tables are difficult to obtain. The observations used were 
taken at various and unknown stages of tide, at various states of wind, 
wave, and turbulence conditions, at different locations with respect to 
river mouths, without regard to the volume of river discharge, under 
various bottom slope conditions which partially determine the volume 
of water exchanging energy with air, and without knowledge of the 
influence of internal waves. 


It is apparent that larger samples areneededto mask some of these 
unknown influences inherent in these samples of data. Nevertheless, 
the data compiled for this study are presented as an approach to 
estimation of temperature values and thermal structure in the various 
categories of climate, tide range, and fresh water influence. 


The tables in this report do not give any indication of diurnal 
temperature variations of the upper layers of the ocean. It is well known 
that these variations are small in the open ocean and that the variation 
is smallest in high latitudes and greatestinlow latitude tropical waters. 
Diurnal variations in temperature decrease rapidly with depth and 
become generally insignificant below the surface. In shallow coastal 
and inland waters diurnal temperature variations are somewhat greater 
than in deep water, but in most instances the variations are less than 
2° C. Leipper (Reference No. 14) and Laevastu (University of Hawaii, 
1962) have shown special cases where rather large variations take place 
in tropical tidal pools or in anarea where upwelling occurs in stratified 
(summer) water and tidal currents move over an irregular bottom. 
Leipper mentions changes of the order of 7 or 8 degrees Fahrenheit 
in the summer at Scripps Pier in California and Laevastu mentions 
changes in tropic waters in tidal pools of as high as 10 degrees 
Fahrenheit. Dietrich (Reference No. 7) discusses diurnal temperature 
variations in both deep and shallow water locations. The following 
summary shows values of diurnal temperature changes in water under 
several various conditions. 


11 


Source 


The Oceans 
(Reference No. 20) 


The Oceans 
(Reference No. 20) 


The Oceans 
(Reference No. 20) 


Diurnal Variation (°C.) 


0.39 (Average)* 
0.60 (Maximum)* 
0.00 (Minimum)* 
0.71 (Average)* 


1.10 (Maximum)* 
0.30 (Minimum)* 


0.93 (Average)* 
1.40 (Maximum)* 
0.60 (Minimum)* 


1.59 (Average)* 
1.90 (Maximum)* 
1.20 (Minimum)* 


0.2 to 0.3** 


0.4 to .06** 


0.20 in December 
0.69 in May 


Comments 


Observations in deep trop- 
ical water--overcast sky-- 
moderate to fresh breeze. 


Observations from deep 
tropical waters--clear sky— 
moderate to fresh breeze. 


Observations from deep 
tropical waters -- overcast 
sky--calm or light breeze. 


Observations from deep 
tropical waters--clear sky 
-- calm to light breeze. 


Deep water surface temper- 
ature observations in higher 
latitudes (Not the tropics). 
Diurnal variation at 50 
meters. 


Average values at 44 stations 
around the British Isles in 
coastal waters. 


*The numerical values given are believed to be somewhat in error; 
however, the influence of clouds and winds are evident. Cloudiness 
tends to decrease incoming radiation and reduces the amplitude of 
diurnal variation. Windiness tends to mix the surface layers distributing 


heat 


over a thicker layer, thereby reducing diurnal amplitudes in 


comparison with calm or light breeze conditions. 


**The diurnal variation of sea temperature is so small that it is of 
little importance to the physical and biological processes in the sea. 


The small variations are essential to the study of heat exchange between 
air and water. (From ‘‘The Oceans’’) 


12 


Source 


Defant 
(Reference No. 6) 


a0 


$1 


Dietrich 
(Reference No. 7) 


Diurnal Variation (°C.) 


0.4 


1.0 


2.0 


0.1 


0.87 


0.25 (Average) 


0.16 to 0.40 (Range) 


.04 (Average) 
*,03 to .09 (Range) 


0.22 (Mean) 

0.30 (Mean 
Maximum) 
(Summer) 


0.14 (Mean) 

0.31 (Mean 
Maximum) 
(Summer) 


0.83 (Mean) 

1.34 (Mean 
Maximum) 
(Summer) 


13 


Comments 


Average surface variationin 
the open sea. 


Value to which variations 
may rise in clear, calm 
weather over the open ocean. 


Diurnal values may exceed 
this value in lakes away 
from the shore at _ the 
surface. 


Diurnal variation at 4-6 
meters in lakes away from 
the shore. 


Surface variation in the Gulf 
of Trieste (enclosed basin 
close to the land) .. MERZ 
(1911). 

Surface diurnal variation 
from Meteor Expedition 
observations between lati- 
tudes 12 1/2°N. and211/2°S. 


Diurnal variation at 50 
meters -—- Meteor Expedition. 


North Sea--deep water, 
North Sea--deep water, 


Gulf of Finland--deep water. 
Gulf of Finland--deep water. 


Shallow water near Newquay 
England, Atlantic Ocean. 


Source Diurnal Variation (°C) Comments 
<a Ss, SSS 


ts 0.56 (Mean) Shallow water--Irish Sea. 
0.94 (Mean 
Maximum) 
(Summer) 


ee 0.86 (Mean) Shallow water -- Gulf of 
1.90 (Mean Bothnia, 
Maximum) 
(Summer) 


The reader is advised to consult references 4, 5, 6, 10, 11, 14, 
16, 20, and 30 in the bibliography for physical explanations of the causes 
and effects of thermal processes between water and air and within 
the water. These references discuss these processes extensively but 
not completely. 


14 


10. 


BIBLIOGRAPHY 


ARTHUR, R. S. “Variation in Sea Temperature off La Jolla”, 
Journal of Geophysical Research, vol. 65, no.12,p. 4081-86, 1960. 


BARTHOLOMEW, J. G. and HERBERTSON, A. J. Bartholomew's 
Physical Atlas. 3 vols. Edinburgh: Geographical Institute vol 3, 
“Atlas of Meteorology.” Unpaged. 1899. 


BERRY, F. A., BOLLAY, E., and BEERS, N. R. Handbook of 
Meteorology, New York; McGraw Hill. 1086 p1945. 


CONRAD, V. Fundamentals of Physical Climatology, Milton, Mass.:; 
Harvard University, Blue Hill Meteorological Observatory. 121 p., 
1942. 


DEACON, G. E. R., SVERDRUP, H. V., STOMMEL, H., and 
THORNTHWAITE, C.W. “Discussions onthe Relationships between 
Meteorology and Oceanography,” Journal of Marine Research, vol. 
it NO.+, Pp. £99=5105), 11955) 


DEFANT, A., Physical Oceanography, 2 vols. New York: Pergamon 
Press) ViOl ely peoo—l ool LOOM 


DIETRICH, G., “Die Elemente des jahrlichen Ganges der 
Oberflachentemperatur in der Nord~ und Ostsee und den 
angrenzenden Gewassern,” Deutsche Hydrographische Zeitschrift, 
Band 6, Heft 2, p. 49-64, 1953. 


ELLIOT, F. E. Physical Types and Regional Patterns of the Marine 


Cornell University Advanced Electronics Center. 34 p. 1960. 


General Electric Advanced Electronics Center, Cornell University. 
32 p. 1960. ; 


FLEMING, R. H. “Physical Characteristics of the Inshore 
Environment,” Journal of Marine Research, vol. 7, no. 3, p. 483- 
484, 1948. 


LAEVASTU, T. “Factors Affecting the Temperature of the Surface 


Layer of the Sea,” Havsforskningsinstitutets Skrift, N:o 195, 
136 p., 1960. 


15 


Ihe 


WZ 


13 


14, 


UG), 


16. 


M76 


Se 


WY). 


20. 


LAFOND, E. C. “Factors Affecting Vertical Temperature Gradients 
in the Upper Layers of the Sea”, Scientific Monthly, vol. 78, 
no, 4, p. 243-253, 1954, 


LAFOND, E. C. and MOORE, A. T. “Short Period Variations 
in Sea Water Temperatures,” Indian Journal of Meteorology and 
Geophysics”, vol. 11, no. 2, p. 163-166, 1960. 


LANDSBERG, H. Physical Climatology. 2nd Ed., Revised. DuBois, 
Pa.: Gray Printing Co. Inc. 446 p. 1960. 


LEIPPER, D. F. “Sea Temperature Variations Associated with 
Tidal Currents in Stratified Shallow Water over an Irregular 
Bottom,” Journal of Marine Research, vol. 14, no. 3, p. 234-252, 
1955. 


PROUDMAN, J. Dynamical Oceanography. New York: Wiley. 
4095p ligase 


PUTNAM, W. C., AXELROD, D.I., BAILEY, H. P., and MCGILL, 
J. T. Natural Coastal Environments of the World. Contract Nonr- 


233(06), NR 388-013. Los Angeles: University of California. 
140 p. 1960. 


RODEN, G. I. “Spectral Analysis of a Sea-~Surface Temperature 
and Atmospheric Pressure Record off Southern California,” 
Journal of Marine Research, vol. 16, no. 2, p. 90-95, 1958. 


RODEN, G. I., and GROVES, G. W. “On the Statistical Prediction 
of Ocean Temperatures,” Journal of Geophysical Research, vol. 65, 
no. l, p. 249-263, 1960. 


SVERDRUP, H. U., JOHNSON, M. W., and FLEMING, R. H. The 
Oceans...New York: Prentice-Hall. 1087 p. 1942. 


TOLBERT, W. H., and AUSTIN, G. B. On the Nearshore Marine 


Paper No. TP161. Panama City, Fla.: U. S. Navy Mine Defense 
Laboratory. 104 p. 1959. 


16 


21. 


22. 


23. 


24, 


25. 


26. 


27. 


28. 


29. 


U. S., Chief of Naval Operations, Naval Aerology Branch, Marine 
Climatic Atlas of the World... 5 vols. NAVAER 50-1C-528,...532. 


Washington: U. S. Govt. Print. Off. Various pagings. 1955-1959. 


U. S:, COAST AND GEODETIC SURVEY. Surface Water 


Pub. 31-1. Washington: U. S. Govt. Print. Off. 76 p. 1960. 


U. S., COAST AND GEODETIC SURVEY. Surface Water 


Pub, 31-3. Washington: U. S. Govt. Print. Off. 71 p. 1962. 


U. S., NATIONAL OCEANOGRAPHIC DATA CENTER. “Selected 
Bathythermograph Observations and Surface Temperature Data.” 
Unpublished, 


U. S. NAVY HYDROGRAPHIC OFFICE. Effects of Weather Upon 
the Thermal Structure of the Ocean, Progress Report No. l. 
H. O. Misc. 15360. Washington: U. S. Hydrographic Office. 
Sisps L952. 


ees Sle 


1957 (Reprinted 1958). 


- -- Oceanographic Atlas of the Polar Seas, Pt. II, Arctic. H. 


UQSN}s 


- - - World Atlas of Sea Surface Temperatures. Second Edition-- 
1944, H. O. Pub. No. 225. Washington: U. S. Hydrographic Office. 
Unpaged. Reprinted 1954. 


U. S.. WEATHER BUREAU. Atlas of Climatic Charts of the Oceans. 
W. B. No. 1247. Washington: U. S. Govt. Print. Off. Unpaged. 1938. 


TABLE I 
TROPICAL CLIMATE CLASS 
LEGEND 


LN: Low tidal range (<10 ft.), no fresh water influence. 
HN: High tidal range ($10 ft.), no fresh water influence. 
LR: Low tidal range (<10 ft.), fresh water influence present, 
HR: High tidal range (§10 ft.), fresh water influence present. 
Cee F : 
iwi ai= difference between air and water temperature 
(surface) 


n=number of observations in class 


ba 1 =)Ti 
Ca 2G hoo Ge Tt ea 
n c 
MONTH HR 


Northern 
Hemisphere|Hemisphel 


e 
e 
e 


e 
e OMe BOs. tC ae 
OA wre COON NW Ww 
eO aher .'e 


OnuURUH DO HhODDYD 


EPXINUROUYKROARO 


Ke OOFrFrF OF OO ON 


e 


= ORK KK KH KE PE Pn eB eS 
° 


ooooeoseeeeese® 
Pe! ON O LO WO HN 


Orroorne 


All values of ¢ and o. are °F. 


18 


TABLE I 
OCEANIC CLIMATIC CLASS 
LEGEND 
LN: Low tidal range (<10 ft.), no fresh water influence. 
HN: High tidal range (510 ft.), no fresh water influence. 
LR: Low tidal range (<10 ft.), fresh water influence present, 


HR: High tidal range (510 ft.), fresh water influence present, 


Ca lat = difference between air and water temperature 
(surface) 


n-number of observations in class 


C= 2, “gC Sey GS 
n 
MONTH LN HR 
Northern 
Hemisphere % 
JAN 1.3 0.9 0.5 
FEB 1.0 Wes) 0.9 
MAR Walt O55 0.4 
APR Is 0.7 0.1 
MAY 1.4 0.4 1.2 
JUN 1.4 0.6 0.4 
JUL 0.9 z.0 0.8 
AUG 1.5 1.4 1.0 
SEP 1.3 0.6 1.0 
OCT 1.2 0.7 2.2 
NOV 1.6 0.8 0.5 
DEC 0.8 1.1 1.3 


n=10 n=3 


All values of € ando are °F, 
Cc 


19 


TABLE III 
SUB-CONTINENTAL CLIMATE CLASS 
LEGEND 
LN: Low tidal range (<10 ft.), no fresh water influence. 
HN: High tidal range ($510 ft.), no fresh water influence. 
LR: Low tidal range (<10 ft.), fresh water influence present, 


HR: High tidal range (510 ft.), fresh water influence present. 


C=T —T . = difference between air and water temperature 
(surface) 


n=number of observations in class 


MONTH LN HR 

Northern Southern 

Hemisphere Heep ea cd Ws 
JAN 3.5 203 Z.7 
FEB 2.9 1.7 z.4 
MAR 3.1 1.6 Z.2 
APR 3.1 1.8 LY) 
MAY 2.5 1.9 1.9 
JUN z.0 2.1 0%) 
JUL 1.9 1.6 1.5 
AUG 1.8 1.3 1.6 
SEP 1.9 1.6 1.0 
OCT 5.5 1.2 1.3 
NOV 3.1 1.6 Mo) 
DEC 3.7 1.8 Z.2 


n=87 n= n=10 


All values of ¢ and g, are OTs 


20 


TABLE IV 
CONTINENTAL CLIMATE CLASS 
LEGEND 
LN: Low tidal range (<10 ft.), no fresh water influence. 
HN: High tidal range (510 ft.), no fresh water influence. 
LR: Low tidal range (<10 ft.), fresh water influence present. 


HR: High tidal range (510 ft.), fresh water influence present, 


C=T Ot difference between air and water temperature 
(surface) 


n=number of observations in class 


Spal T,+C=T, lis 
MONTH LN HR 


Southern 
mae oe 


Northern 
Hemisphere 


N 
ie 


FEB 8.2 

MAR 8.0 

APR: 6.9 

MAY 5.6 3.5 
JUN 4.0 3.0 
JUL 3.8 0.8 
AUG 4.1 1.7 
SEP 4.1 Z2.5 
OCT 4,6 5) 
NOV 6.0 4.4 
DEC 6.9 9.3 


n= 42 


All values of ¢ and oie are °F. 


21 


TABLE V 


VERTICAL THERMAL GRADIENTS 
TROPICAL CLIMATE CLASS 


LEGEND: q = Surface water temperature as determined from Tables 


I through IV 


a Water temperature at designated depths 


On We) at 


n=number of observations 


LN: Tidal range less than 10 feet; fresh water influence absent. 

HN: Tidal range equal to or greater than 10 feet; fresh water influence 
absent. 

LR: Tidal range less than 10 feet; fresh water influence present, 

HR: Tidal range equal to or greater than 10 feet; fresh water influence 


present, 
WINTER (coldest month) 
LN HN LR HR 

Surface 

10 feet 0.3 0.0 
20 feet 0.4 0.2 
30 feet 0.6 0.7 
50 feet 0.8 0.5 
70 feet 1.1 0.6 
100 feet 1.4 0.1 
150 feet 1.8 0.1 
180 feet Zeal 0.6 


All values of ¢ and o. are °F, 


22 


TABLE V (cont'd) 


SUMMER (warmest month) 


Surface 
10 feet 
20 feet 
30 feet 
50 feet 
70 feet 
100 feet 
150 feet 
180 feet 


All values of ¢ and g, are OP, 
23 


TABLE VI 


VERTICAL THERMAL GRADIENTS 
OCEANIC CLIMATE CLASS 


LEGEND: T = Surface water temperature as determined from Tables 
T through IV 
Ta = Water temperature at designated depths 


LN: Tidal range less than 10 feet; fresh water influence absent. 

HN: Tidal range equal to or greater than 10 feet; fresh water influence 
absent. 

LR: Tidal range less than 10 feet; fresh water influence present. 

HR: Tidal range equal to or greater than 10 feet; fresh water influence 


present. 
WINTER (coldest month) 

Surface 

10 feet 0.1 
20 feet 0.2 
30 feet 0.3 
50 feet 0.6 
70 feet ie) 
100 feet 3.9 
150 feet 6.0 
180 feet 7.0 


n=10 n=3 n=2 n=3 


All values of ¢€ and o. are oh, 


24 


TABLE VI (cont'd) 


SUMMER (warmest month) 


Surface 

10 feet 0.8]|-0.1 0.3 
20 feet 2.1 0.5] 0.5 
30 feet 2.5]/-1.0}] 0.9 
50 feet 3.9|j-1.7 1.6 
70 feet 4.5]||-3.2 3.0 
100 feet 4.3||-4.6 ] 4.1 
150 feet 4.0}//-5.5] 4.8 
180 feet 5.0/]/-8.1 3.9 


All values of € and g, are oF, 


25 


TABLE VI 


VERTICAL THERMAL GRADIENTS 
SUB-CONTINENTAL CLIMATE CLASS 


LEGEND: T, = Surface water temperature as determined from Tables 
I through IV 
i Water temperature at designated depths 


LN; Tidal range less than 10 feet; fresh water influence absent. 

HN: Tidal range equal to or greater than 10 feet; fresh water influence 
absent. 

LR: Tidal range less than 10 feet; fresh water influence present. 

HR: Tidal range equal to or greater than 10 feet; fresh water influence 


present. 
WINTER (coldest month) 

Surface 0 

10 feet 0.0 0.1 | 0.3 }}0.1 ] O.1 
20 feet 0.0 0.2] 0.5 {70.1 |] 0.3 
30 feet 0.0 0.3) 0.7 {70.1 | 0.4 
50 feet 0.1 0.3} 1.0 |{0.4] 0.7 
70 feet 0.3 0.5] 1.5 |]0.4] 1.5 
100 feet 0.5 0.4] 1.7 jJ1.1 ] 1.7 
150 feet 0.7 We@ || 5 I] | bo} |} 0/4 
180 feet 0.8 Nel) MoS Ill 458) |) Soll 

n=12 8 


All values of C ando are °F. 
c 


26 


TABLE VII (cont'd) 


SUMMER (warmest month) 


Surface 0 
10 feet 0.5 0.7 0.3 
20 feet 1.0 les 0.5 
30 feet ei (an 0.7 
50 feet 4,1 4,4 0.7 
70 feet 5.8 6.5 1.6 
100 feet 6.7 9.3 325 
150 feet 7.4 9.1 4.8 
180 feet Call 9.3 5.4 


All values of ¢ and g, are ony. 


27 


TABLE VIII 


VERTICAL THERMAL GRADIENTS 
CONTINENTAL CLIMATE CLASS 


LEGEND: T = Surface water temperature as determined from Tables 


LN: 
HN: 


I through VIII 


Ty Water temperature at designated depths 


Gh n= number of observations 
1 d; Si 


Tidal range less than 10 feet; fresh water influence absent. 
Tidal range equal to or greater than 10 feet; fresh water influence 
absent. 


LR: Tidal range less than 10 feet; fresh water influence present, 
HR: Tidal range equal to or greater than 10 feet; fresh water influence 
present. 
WINTER (coldest month) 

Surface 

10 feet 0.0 } 0.3 0.0 | 0.3 |}0.0 | 0.0 

20 feet 0.0 | 0.4 0.0 | 0.5 |{]0.0 | 0.0 

30 feet 0.0 | 0.5 0.0 | 0.7 |/0.0 | 0.0 

50 feet 0.0 | 0.6 0.0 | 0.8 }|/0.0 | 0.1 

70 feet 0.1 | 0.9 O.1 | 1.0 |/ 0.1 | 0.1 

100 feet O52 1150 0.1 | 1.3 }70.1 | 0.1 

150 feet O55: elt O.1 | 1.7 |{[/ 0.1 | 0.1 

180 feet 0.4 | 1.3 O.1 | 1.9 |} 0.1 | 0.1 


All values of € and o are °F, 


28 


Surface 


10 
20 
30 
50 
70 
100 
150 
180 


feet 
feet 
feet 
feet 
feet 
feet 
feet 
feet 


TABLE VIII (cont'd) 


SUMMER (warmest month) 


All values of € and o. are °F. 


29 


TABLE IX 


HORIZONTAL THERMAL GRADIENTS 
TROPICAL CLIMATE CLASS 


Legend 


WINTER (Northern Hemisphere): January-February-March 
(Southern Hemisphere): July-August-~September 


SPRING (Northern Hemisphere): April-May-June 
(Southern Hemisphere): October~-November-~December 


SUMMER (Northern Hemisphere): July~August-September 
(Southern Hemisphere): January-February-—March 


AUTUMN (Northern Hemisphere): October-~-November-December 
(Southern Hemisphere); April~May-June 


T= Surface water temperature at distance x offshore; 


x=1,2,3 etc nautical miles. 
i= Surface water temperature very nearshore. 


Cvs Sat § See a n=number of observations 
1 X1 Wi 


NAUTICAL MILES OFFSHORE (x) 


All values of c and v, are oe 


30 


TABLE X 


HORIZONTAL THERMAL GRADIENTS 
OCEANIC CLIMATE CLASS 


Legend 


WINTER (Northern Hemisphere); January-February-—March 
(Southern Hemisphere): July-August-September 


SPRING (Northern Hemisphere): April-May-June 
(Southern Hemisphere): October-November-~December 


SUMMER (Northern Hemisphere): July-August-September 
(Southern Hemisphere): January-February-March 


AUTUMN (Northern Hemisphere): October-November-December 
(Southern Hemisphere): April-May-June 


T | =Surface water temperature at distance x offshore; 
x=],2,3 etc nautical miles. 


T =Surface water temperature very nearshore, 
Ww 


C=T py eS ces n= number of observations 


Winter 
Spring 
Summer 


Autumn 


NAUTICAL MILES OFFSHORE (x) 


All values of ¢ and o. are °F. 


31 


TABLE XI 


HORIZONTAL THERMAL GRADIENTS 
SUB-CONTINENTAL CLIMATE CLASS 


Legend 


WINTER (Northern Hemisphere); January-February-—March 
(Southern Hemisphere); July-August-September 


SPRING (Northern Hemisphere): April-May-June 
(Southern Hemisphere): October-November-December 


SUMMER (Northern Hemisphere): July-August-September 
(Southern Hemisphere): January-February-March 


AUTUMN (Northern Hemisphere): October-November-December 
(Southern Hemisphere): April-May-June 


T= Surface water temperature at distance x offshore; 


x=1,2,3 etc nautical miles. 
a Surface water temperature very nearshore. 


C=T ay fener See n=number of observations 


Winter } +0.6 |0.4 || +0.8] 0.7 
Spring ) +0.3 41.5 |} +03] 1.6 
Summer H +0.5 1.0 ]}|+0.5] 1.2 
Autumn 


NAUTICAL MILES OFFSHORE (x) 


All values of ¢ and o are °F. 


32 


TABLE XII 


HORIZONTAL THERMAL GRADIENTS 
CONTINENTAL CLIMATE CLASS 


Legend 


WINTER (Northern Hemisphere): January-~February-—March 
(Southern Hemisphere); July-August-~September 


SPRING (Northern Hemisphere): April~May-June 
(Southern Hemisphere): October~November-December 


SUMMER (Northern Hemisphere): July-August-September 
(Southern Hemisphere): January-~February-March 


AUTUMN (Northern Hemisphere); October-~-November-December 
(Southern Hemisphere); April~May-June 


VS Surface water temperature at distance x offshore; 


x= 1,2,3 etc. nautical miles 
T= Surface water temperature very nearshore. 


C=T ee wl 2 n=number of observations 


Pe feel c [eel] e [eal] [ool] € [ocl] & | eal] € [ooll ¢ [ool] € oll ¢ Joo 
+0.2} 0.1 


+0.4] 0.3 +0.8]0.6}] +1.0] 0.9 |} +1.3] 1.4 }]/41.5] 1.4 |] +1.6] 1.5 J 2 +1.9] 1.7|N=12 

lM +0.7} 0.7 4+1.341.5}) 41.7] 1.8]] 41.7] 1.8 |} 41.8] 1.8 |] +18] 19 : : +1.9}1.9 |N=7 
+0.2} 0.3 +0.5}0.7}| +0.6] 0.8 |] +0.7] 1.0 }}4+0.9} 1.2 |]+1.0) 1.2 : : 4+1.2)1.4}|N=10 

0 402 0 i 0 . 0 ! 0 ! 0 : L 0 |08)N=7 


+0.1] 0.1 
0 401 ; 
oS a a | | ae | ee | | 


NAUTICAL MILES OFFSHORE (x) 


Winter 


Spring 


Summer 


Autumn 


All values of € and gare oh 


33 


4.4 
| 


SSS — 


UNION OF SOVIRT SOCLALIST REFODLICS 


~ FIGURE 1 Mean Air Temperature—JANUARY 


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——— 1 FIGURE 4 Mean Air Temperature—APRIL i 
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nn — 
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Sri 


UNION OF SOVIET SOCIALIST REPUBLICS 


UNION OF SOVIET SOCIALIST REPUBLICS 


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<< —=—_ SS : 


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—FIGURE 10 Mean Air Temperature—OCTOBER 


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TIDE RANGE 5 | 
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(PST-UL) “s8y¢t “d 29 ‘e961 aunr 

‘ueyqeiy “J “vy 4q AYNLONULS AUNLVUAIWAL 
- II wed - WOLSAS DOTVNVY YOdUVH 

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