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Warming up on Land Surface Temperature


by Cate W.

Green Group

June 2-6, 2016

The photo above shows the surface temperature of the land in January 2015. Observe the surface temperature of places with higher reflectance (see reflected surface wave pages) to see relationship between the two.
The photo above shows the surface temperature of the land in July 2015, half a year later than the image to the left. Observe the surface temperature of places with higher reflectance (see reflected surface wave pages) to see relationship between the two.

Using the legend, determine the value (number and unit) for the yellow-ish/highest color. The value for the yellowish-white color is 45 degrees Celsius.

b. Where is this color located in the image?

The yellowish-white color is found in non coastal Australia, Southern and mid-regions of Africa, parts of South America and splotched across south Asia.

m. Use another browser tab, and find a celsius-fahrenheit converter. Convert 10 degrees Celsius to Fahrenheit.

When converted, 10 degrees Celsius is equal to 50 degrees Fahrenheit.

n. Determine the value for the lightest blue-white color.

The lightest blue white color represents -25 degrees Celsius or -13 degrees Fahrenheit

0. Where is this located in the image? The lightest blue white color is located in the Arctic Circle area (Russia, Canada, and Greenland) and in Antarctica.

p. Can you think of a possible reason for this situation in January?

A reason the North would have a cold surface temperature in January is because it is winter, meaning that the southern hemisphere is getting direct sunlight from the tilt of the Earth toward to the Sun. They both, the Arctic Circle and Antarctica, would have a low surface temperature because they are both snow and ice. Snow and ice are both highly reflective surfaces meaning that the surface is not left with much heat. The north will have more of the snow surface because of the lack of direct sunlight and warmth in winter.

q. What do you think the image would look like in July? Why?

I predict that the image will look sort of reversed in July but not entirely opposite. I do not think it is opposite because I believe that Greenland and icey part of the North will still have a mildly reflective surface and that will still leave a cold surface. Otherwise, the seasons will be reversed for the northern and southern hemisphere and the North will probably be warmer colors. There is less land is the south and not all of it reaches that far away from the equator so I think that it might not be as white-blue as the January version.

r. Click on the image for July to check your answer and describe what you found below:

I was very close to be entirely accurate in my predictions. However I did think that the Southern hemisphere was going to be slightly light in the blue color.

My source for photos and information: http://neo.sci.gsfc.nasa.gov/view.php?datasetId=CERES_SWFLUX_M&year=2015