Part 5—Analyze Relationships Between Datasets

Step 1 – Select Three Maps for Analysis

Select the April 2009 Reflected Shortwave Radiation Map for Analysis

  1. Go to the NASA Earth Observations (NEO) website and display the Energy Dataset, Reflected Shortwave Radiation image for April 1, 2009 to April 30, 2009. Click on the Energy tab under the map to display the Energy Datasets. Then select the Reflected Shortwave Radiation dataset.
  2. In the Search Results section, select the the April 1 to April 30, 2009 image for analysis by clicking the appropriate "+" button to expand its field. Click View to display the image.
  3. AnalysisBox with Albedo Click Analyze this image to add it to the Analysis box.

    2 analyse this image albedo
     
  4. You should now see one image listed in the Analysis box.
  5. If you wish to change one or more of your selections for analysis, click Remove just below the item you want to deselect, and then go back to the Search Results section to find the map you want to add.

Select the April 2009 Snow Cover Map for Analysis

  1. To select another image for analysis, click on the Land tab under the map to display the Land Datasets. Then select the Snow Cover (MODIS) dataset.
  2. AnalysisBox with Albedo and Snow In the Search Results section, select the April 1 to May 1, 2009 image for analysis by clicking the appropriate "+" button to expand its field. Click View to display the image.
  3. Click Analyze this image to add it to the Analysis box. 
    snow cover analyze image
  4. You should now have two images in the Analysis box.

Select the April 2009 Land Surface Temperature Map for Analysis

  1. To select another image for analysis, click on the Land tab under the map to display the Land Datasets. Then select the Land Surface Temperature (Day) (MODIS) dataset.
  2. analysis box filled In the Search Results section, select the the April 1 to April 30, 2009 image for analysis by clicking the appropriate "+" button to expand its field. Click View to display the image.
  3. Click Analyze this image to add it to the Analysis box.
    6 analyse this image land surface temp
  4. There should now be three images listed in the Analysis box.

Step 2 – Launch and Configure Analysis

Once the three images of reflected shortwave radiation, snow cover, and land surface temperature are in the Analysis box, it becomes possible to analyze the relationship between these variables.

  1. From the Analysis box where the three images are listed, Click configure/launch analysis. A new Analysis window will open. 
  2. Click the Select Area tab. Use the Pointer tool (in the upper-left hand corner) to click and drag a box in the map around North America and Greenland. Click Select to save your region of interest.