Refer to the surface albedo study of pond ice, Exercise 11.43. Recall that you fit a second-order model for broadband surface albedo level (y) as a function of pond depth (x) to data saved in the PONDICE file. Conduct a complete residual analysis of the model. Do you recommend any model modifications?

Data from Exercise 11.43

Surface albedo is defined as the ratio of solar energy directed upward from a surface over energy incident upon the surface. Surface albedo is a critical climatological parameter of sea ice. The National Snow and Ice Data Center (NSIDC) collects data on the albedo, depth, and physical characteristics of ice melt ponds in the Canadian Arctic. Data for 504 ice melt ponds located in the Barrow Strait in the Canadian Arctic are saved in the PONDICE file. Environmental engineers want to examine the relationship between the broadband surface albedo level, y, of the ice and pond depth, x (meters). 

Transcribed Image Text:

Sctterplot of broadband-alb vs depth 0.8- 0.7- 0.6- 0.5- 0.4- 0.3- 0.2- 0.1- 0.0- 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 depth broadband-alb