Influence of long-term trends and period of record selection on the calculation of climatic design conditions and degree days.(Report): An article from: ASHRAE Transactions
Book Details
Author(s)Didier Thevenard
ISBN / ASINB003QN3ZSW
ISBN-13978B003QN3ZS0
AvailabilityAvailable for download now
Sales Rank11,028,652
MarketplaceUnited States 🇺🇸
Description
This digital document is an article from ASHRAE Transactions, published by American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. on January 1, 2010. The length of the article is 8905 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.
From the author: Calculation of climatic design conditions and cooling and heating degree days using data from different decades for 1274 stations worldwide reveals long-term trends. Over the last three decades, climatic design conditions have increased at an average rate of 0.76[degrees]C/decade (1.37[degrees]F/decade) for the 99.6% heating dry bulb temperature, 0.38[degrees]C/decade (0.68[degrees]F/decade) for the 0.4% cooling design temperature, and 0.28[degrees]C/decade (0.50[degrees]F/decade) for the 0.4% dehumidification dew point temperature. Annual heating degree-days have decreased on average by 118[degrees]C-day/decade (212[degrees]F-day/decade) while annual cooling degree days have increased by 68[degrees]C-day/decade (122[degrees]F-day/decade). These changes are indicative of a warming of the climate experienced by the monitoring stations. However, the magnitude of that warming indicates that it is probably less related to global warming than to the urban heat island effect; it is likely an indication of the built environment encroaching on locations where meteorological stations are situated, particularly airports. The paper also studies the appropriate period of record to use for the calculation of climatic design conditions and degree-days. The use of a 30-year period is recommended; the use of shorter periods of record encompassing only recent years, in order to better capture climatic trends, results in an added uncertainty that is greater than the observed climate trends themselves.
Citation Details
Title: Influence of long-term trends and period of record selection on the calculation of climatic design conditions and degree days.(Report)
Author: Didier Thevenard
Publication:ASHRAE Transactions (Magazine/Journal)
Date: January 1, 2010
Publisher: American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Volume: 116 Issue: 1 Page: 447(14)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
From the author: Calculation of climatic design conditions and cooling and heating degree days using data from different decades for 1274 stations worldwide reveals long-term trends. Over the last three decades, climatic design conditions have increased at an average rate of 0.76[degrees]C/decade (1.37[degrees]F/decade) for the 99.6% heating dry bulb temperature, 0.38[degrees]C/decade (0.68[degrees]F/decade) for the 0.4% cooling design temperature, and 0.28[degrees]C/decade (0.50[degrees]F/decade) for the 0.4% dehumidification dew point temperature. Annual heating degree-days have decreased on average by 118[degrees]C-day/decade (212[degrees]F-day/decade) while annual cooling degree days have increased by 68[degrees]C-day/decade (122[degrees]F-day/decade). These changes are indicative of a warming of the climate experienced by the monitoring stations. However, the magnitude of that warming indicates that it is probably less related to global warming than to the urban heat island effect; it is likely an indication of the built environment encroaching on locations where meteorological stations are situated, particularly airports. The paper also studies the appropriate period of record to use for the calculation of climatic design conditions and degree-days. The use of a 30-year period is recommended; the use of shorter periods of record encompassing only recent years, in order to better capture climatic trends, results in an added uncertainty that is greater than the observed climate trends themselves.
Citation Details
Title: Influence of long-term trends and period of record selection on the calculation of climatic design conditions and degree days.(Report)
Author: Didier Thevenard
Publication:ASHRAE Transactions (Magazine/Journal)
Date: January 1, 2010
Publisher: American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Volume: 116 Issue: 1 Page: 447(14)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
