Fig. 4: Histogram of surface horizontal wind speed frequencies for the spring months of 2011.

a Hours for spring (March, April, and May), 2011 in which the average 10-m horizontal wind speeds within the box where albedo was altered for Domain 3 were totaled and binned in 1 m s⁻¹ intervals to remove noise. Each bar represents the number of hours spent at (and including) the preceding value up to (but not including) the next wind speed. For example, the bars at 1.5 m s⁻¹ are all hours with average wind speeds between 1 and 2 m s⁻¹, but not including 2 m s⁻¹ or above. The control run is represented as black bars. The frequencies are normalized to 1 (left y-axis). Dotted colored and black lines are Weibull distribution fits for each of the model simulations, and are also normalized to 1 (right y-axis). Weibull fits were chosen due to the skewed nature of the 10-m horizontal wind speeds. b Same as a, but a line plot is used instead of bars to assist in differentiating between model runs. Frequency is now in total spring hours.