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Degday: A Program for Calculating Degree-days, and Assumptions Behind the Degree-day Approach
Environmental Entomology, 1986A BASIC computer program (DEGDAY) for calculating degree-days on microcomputers is presented. The program calculates heating degree-days with the rectangle, triangle, and sine wave methods and calculates cooling degree days with the sine wave method. Assumptions and approximations associated with degree-day calculations are noted.
Leon G. Higley +2 more
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1998
The development of plants and Poikilothermic (cold-blooded) animals is highly dependent on temperature. It has been said that “the hotter it is the faster they grow.” This is true, up to a point, where higher temperatures retard or even stop development. Temperature-driven models are available for a large number of plants such as corn, cotton, alfalfa,
Linda J. Young, Jerry H. Young
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The development of plants and Poikilothermic (cold-blooded) animals is highly dependent on temperature. It has been said that “the hotter it is the faster they grow.” This is true, up to a point, where higher temperatures retard or even stop development. Temperature-driven models are available for a large number of plants such as corn, cotton, alfalfa,
Linda J. Young, Jerry H. Young
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Environmental Engineering and Management Journal, 2014
In Central European countries, heating represents approximately 75% of the total energy use of a residential building, with average thermal characteristics of the envelope. The expected energy use can be determined using complex simulation programs, but an easier way is to use specific degree day values.
Zoltan Verbai +2 more
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In Central European countries, heating represents approximately 75% of the total energy use of a residential building, with average thermal characteristics of the envelope. The expected energy use can be determined using complex simulation programs, but an easier way is to use specific degree day values.
Zoltan Verbai +2 more
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Agricultural and Forest Meteorology, 1985
Abstract Degree day accumulations can be used by growers to monitor the development of biological processes and thus can be used in crop and pest management. The adoption and use of degree days by individual growers and agricultural advisors, however, has been limited partly because of computational difficulties involved in the derivation of degree ...
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Abstract Degree day accumulations can be used by growers to monitor the development of biological processes and thus can be used in crop and pest management. The adoption and use of degree days by individual growers and agricultural advisors, however, has been limited partly because of computational difficulties involved in the derivation of degree ...
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Building Services Engineering Research and Technology, 1981
Temperature records at several sites have been analysed in terms of monthly and annual degree-day values to base temperatures in the range 5 to 20°C. Results for London (Heathrow) are presented in some detail and compared with estimates made with various published procedures. The consistency across Britain of year-to-year variations is examined.
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Temperature records at several sites have been analysed in terms of monthly and annual degree-day values to base temperatures in the range 5 to 20°C. Results for London (Heathrow) are presented in some detail and compared with estimates made with various published procedures. The consistency across Britain of year-to-year variations is examined.
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Estimating monthly degree-days
Building Services Engineering Research and Technology, 1983A new method is proposed for the estimation of monthly degree-day values from monthly mean temperatures. This can be used to calculate figures for sites which are distant from the 17 sites in the UK for which published data are available, and to modify published figures to non-standard base temperatures.
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AN IMPROVED MODEL FOR ESTIMATING DEGREE DAYS
Acta Horticulturae, 2002Although using hourly data offers the greatest accuracy for estimating growing degree days, daily maximum and minimum temperature data are often used to estimate degree days by approximating the diurnal temperature trends. In this paper, an empirical model (TM model), recently developed for estimating hourly mean temperature, is used to calculate ...
Spano D, Cesaraccio C, Duce P, Snyder RL
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Determining degree-day thresholds from field observations
International Journal of Biometeorology, 1999This paper compares several methods for determining degree-day (°D) threshold temperatures from field observations. Three of the methods use the mean developmental period temperature and simple equations to estimate: (1) the smallest standard deviation in °D, (2) the least standard deviation in days, and (3) a linear regression intercept.
Snyder RL, Spano D, Cesaraccio C, Duce P
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Elaphostrongylus rangiferi degree-day model
2020Supplementary code and data for Rose Vineer et al., 2021.
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