Cooling Degree Day


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Cooling Degree Day

A day on which the temperature in a certain area is above 65 degrees Fahrenheit, necessitating the use of air conditioners. Cooling degree days are used in some weather futures, which are contracts in which the buyer is required to pay the seller some multiple of $20 for each cooling degree day in a month, depending on how much warmer it is. Weather futures allow businesses to hedge against potential losses resulting from unexpected changes in weather. Energy companies are the most common sellers of weather futures. They have become relatively popular investments. See also: Heating degree day.
References in periodicals archive ?
Electricity consumption was regressed on temperature, in raw form as well as by first calculating the heating degree days (HDDs) and cooling degree days (CDDs).
Download heating or cooling degree days as needed in the same measurement periods you're using in the first column--monthly, weekly, or daily--and insert these into the middle column.
Typically, cooling degree days are calculated as how much warmer the mean temperature at a location is than 65 degrees Fahrenheit on a given day.
Cooling degree days are commonly used in studies of regional wage variation as a broad measure of climate throughout the year, while average January and July temperatures are included to account for seasonal extremes.
19) The weather variables were the actual average temperatures during 1979, the highest temperature in the summer, the lowest temperature during the winter, the number of heating degree days during 1979, and the number of cooling degree days.
7) Consequently, a modest increase in cooling degree days and decrease in heating degree days can also be observed as shown in Figures 3 and 4.
9[degrees]C), and 4,135 cooling degree days (65[degrees]F) (2,297 cooling degree days relative to [degrees]C).
For example, plotting the electricity consumption and cooling degree days (CDD) on the same chart helps users compare and see if there is a relationship between weather and electricity consumption.
Annual heating degree-days have decreased on average by 118[degrees]C-day/decade while annual cooling degree days have increased by 68[degrees]C-day/decade.