Heating and Cooling Degree Days

The video tutorial explains the concept of heating and cooling degree days, which are used by meteorologists to plan energy needs. It details how to calculate these degree days based on average daily temperatures, using 65 degrees Fahrenheit as a baseline. The tutorial also analyzes how degree days vary across different locations, particularly focusing on the comparison between San Francisco and St. Louis.

What is the primary purpose of heating and cooling degree days for meteorologists at PG&E?

• To predict weather patterns

• To track wind speeds

• To measure rainfall

• To plan energy needs

How is a heating degree day calculated?

• By adding the high and low temperatures

• By multiplying the high temperature by 2

• By subtracting the average temperature from 65°F

• By dividing the low temperature by 2

If the average temperature is 60°F, how many heating degree days are accumulated?

• 20

• 15

• 10

• 5

What happens when the average temperature is above 65°F?

• Both heating and cooling degree days are calculated

• Heating degree days are calculated

• Cooling degree days are calculated

• No degree days are calculated

How many cooling degree days are there if the average temperature is 73°F?

• 5

• 12

• 8

• 10

Which geographical factor affects the pattern of heating degree days in the United States?

• Proximity to the ocean

• Proximity to deserts

• Latitude

• Longitude

Why do the West Coast and Appalachian Mountains disrupt the pattern of heating degree days?

• Due to their low temperatures

• Because of their proximity to the equator

• Because of their mountain ranges

• Due to their high temperatures

Which city has more months accumulating heating degree days, San Francisco or St. Louis?

• St. Louis

• Both have the same

• San Francisco

• Neither city accumulates heating degree days

Which city accumulates more total heating degree days, San Francisco or St. Louis?

• San Francisco

• St. Louis

• Both accumulate the same

• Neither city accumulates heating degree days

What is the significance of the 65°F threshold in calculating degree days?

• It is the average global temperature

• It is the baseline for calculating both heating and cooling degree days

• It is the average temperature of San Francisco

• It is the average temperature of St. Louis