Purpose:

To describe and interpret the global average sea surface temperature (SST).

The data to describe:

The image with data below is from Global Ocean Data Viewer. It represents the ocean temperature averaged over many years. This means that the variations that naturally occur during the year and during different years are not represented in this one plot. This kind of plot is very useful when the purpose of the investigation is to determine the long-term patterns that persist for many decades, without being confused by shorter-term variations.

Average Annual Sea Surface Temperature

 

 

 

 

 

 

 

 

The task:

Your job is to write a short scientific discussion of the data shown in the figure above and to develop a model explaining this data.  

Describe: Describe the data found in the image above. Be brief, but don't miss important features.  Look at the most obvious temperature variations. Possible references, for descriptive purposes, are the geographic position such as latitude, longitude, size of the body of water, or distance from a continent.  Look for smaller variations in the major pattern. When you write down your observations, use data values and locations to illustrate your statements. Be as quantitative as possible.

Interpret: Look for patterns and relationships that explain the overall distribution of the ocean temperatures and write a short paragraph. Also, explain any variations from the overall pattern. Use simple drawings to support your explanation(s). Draw and/or write on the figure if it will clarify your explanation. You should begin your description by mentioning the main phenomena that affect the temperature of the ocean;s surface.

Note: an interpretation requires a theory or model: Develop a model to explain the most dominant pattern of sea surface temperature (SST).  A helpful hint is to consider factors that contribute to heat input.  Diagrams and sketches can be very useful. Describe how the data fits the model.  Also, discuss any data that do not correspond to the model (i.e. it does not support the model).  You may also want to suggest other data that could help with developing your model.

Write your description here:

 

 

Write your interpretation here:

 

 

 

Write your theory here: