The figure above shows the average monthly temperatures for 2016 (in red) and th
ID: 283442 • Letter: T
Question
The figure above shows the average monthly temperatures for 2016 (in red) and the 120-year average (in black). These data are from the Great Blue Hill (located in Canton, MA, 6 miles southwest of Boston). What factors control the temperature and seasonal variations in temperature? Is the 2016 temperature record at Great Blue Hill an indication of global warming? Why or why not? What else would you need to know in order to answer this question better. For comparison, plot the average monthly temperatures (you can estimate) for Miami (Florida) and Anchorage (Alaska).Explanation / Answer
a) Factors that control the temperature of any location is controlled by-
Latitude
Altitude
Distribution of land and water
Ocean Currents
Prevailing Wind
Cloudiness
Mountain barriers
Nature of the surface
Relief and
Convection and turbulence.
Latitude plays an major role in the intensity of insolation. Since insolation plays an major role in the determining the temperature of the air, thus the temperature of atmosphere at any particular place is the function of insolation received at that location.
It has been found that the total insolation is more at lower latitudes as compare to that of higher latitudes.
Altitude is an also an important aspect with an vertical movement upward in the troposphere there is an decrease of temperature of 6.5oC
Land surface heats up quickly to great extent than the surface when subjected to equal amount of insolation and it cools more rapidly, due to this contrast between land and water surface the capacity for heating atmosphere varies greatly.
b) When comparing the above data it has been found that there is an general increase in the temperature pattern when comparing with the average value this suggests an increase in temperature this is due tot he fact that there is an increase in the thickness of the insolation. Well this can be considered as an indirect evidence in the global warming but we have to take consideration for the data from other locations too this’ll support our assumptions.
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