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EXERCISES
Examination and evaluation of real-time oceanographic data on the internet

PRELIMINARY

I: TECTONICS
and OCEAN BASINS

II: OCEANS/ ATMOSPHERIC GASES
Ocean Temperatures
Ocean Salinity
Oceanic Water Masses
Sea Ice and Icebergs
Carbon Dioxide
Ozone

III: OCEAN/
ATMOSPHERE DYNAMICS

IV: INTEGRATED TOPICS

 
OCEAN TEMPERATURES (contd.)

Introduction to Questions on Ocean Temperatures:

  • The questions are outlined in  tables ( first page , previous page , this page)
    • they require examination of spatial variations in solar heat flux.
    • they require examination of various temperature maps
      • current global sea surface temperatures.
      • annual average global sea surface temperatures.
      • temperatures of the deep ocean
      • latitudinal variations in sea surface and deep ocean temperatures
      • temporal variation in sea surface temperatures
  • Reminder: you should submit your answers via oncourse .

Ocean Temperatures (contd.) pt
Temporal variations in Sea Surface Temperatures
The Levitus atlas of oceanographic physical and chemical is accessable online and is here used to examine monthly variation in sea surface temperatures in two basins.
The instructions for use of the atlas are provided on a separately ( Atlas Guidelines ). Use the MONTHLY profiles, selecting temperature and using the guidelines for the display below help to set the parameters for each figure, with the box numbers referring to the sites on the display. 
In addition an extra box entitled time will appear below the uppermost box (depth). By selecting the buttons for successive months (Jan, Feb, Mar, etc.) an entire annual sequence of monthly temperatures can be viewed.
18. In which months do the temperatures at the following locations reach their maximum and minimum values.  Give details of both the months and values of the high and low temperatures for each site.  HINT

display categories


depth
lat
lat
long
long

box
1
2
3
4
5

(i) the Gulf of Mexico
0
35°N
10°N
100°W
70°W
2
(ii) the Persian Gulf
0
35°N
10°N
30°E
70°E
2
The Levitus atlas of oceanographic physical and chemical is accessable online and is here used to examine seasonal changes in temperatures in the Atlantic Ocean. 
The instructions for use of the atlas are provided on a separately ( Atlas Guidelines ). Use the SEASONAL profiles, selecting temperature and using the guidelines for the display below help to set the parameters for each figure, with the box numbers referring to the sites on the display. 
In addition an extra box entitled time will appear below the uppermost box (depth). By selecting the buttons for successive seasons (Jan-Mar, Apr-Jun, etc.) an entire annual sequence of seasonal temperatures can be viewed.
 

display categories

depth
latitude
latitude
longitude
longitude
box
1
2
3
4
5
Atlantic
0
70°N
75°S
70°W
10°E
19. What is the overall seasonal variation (i.e. maximum value - minimum value) in sea surface temperature at 30°W in the Atlantic Oceans at the following latitudes?

lat
 
lat
 
lat
 
lat
 
lat

(i)
60°N
(ii)
25°N
(iii)
(iv)
25°S
(v)
60°S
5
20. What latitudes show the greatest variation in annual temperature? HINT 2


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