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DOI | 10.1007/s11069-020-03900-5 |
Trends in cooling and heating degree-days overtimes in Bangladesh? An investigation of the possible causes of changes | |
Islam A.R.M.T.; Ahmed I.; Rahman M.S. | |
发表日期 | 2020 |
ISSN | 0921030X |
起始页码 | 879 |
结束页码 | 909 |
卷号 | 101期号:3 |
英文摘要 | An understanding of the trend in cooling and heating degree-days acts as a driving force for building energy demand under climate change conditions. However, little is known about the spatiotemporal trend patterns in cooling and heating degree-days in recent times and their possible causes in Bangladesh. Therefore, we explored the trend and variability of cooling degree-days (CDD) and heating degree-days (HDD) and their possible reasons for variation for the study period 1980–2017 based on daily temperatures datasets from 27 sites in Bangladesh. The results show that the highest annual mean CDD and HDD were identified in the southwestern and central climatic regions of Bangladesh. The CDD trend has significantly increased in Bangladesh, and the HDD trend has increased but non-significance. The outcomes of detrended fluctuation analysis (DFA) and R/S analysis exhibit that CDD and HDD will continue their contemporary trend direction in the future. Land–Ocean Temperature Index (LOTI) had a significant positive influence on CDD; however, there was no significant correlation between HDD and atmospheric circulation indices. The importance analysis from the random forest (RF) model showed that the LOTI is the highest contributing variable for CDD and East Asian Summer Monsoon Index (EASMI) is the largest influential variable for HDD affecting climate variability in Bangladesh. ECMWF ERA5 reanalysis datasets depict that higher summer geopotential height, an anticyclonic center, enhanced relative humidity, declined total and high cloud covers, decreasing surface solar radiation, and high skin temperature fluxes might have influenced on CDD and HDD variations in Bangladesh. © 2020, Springer Nature B.V. |
关键词 | BangladeshCooling degree-daysHeating degree-daysLand–ocean temperature indexRandom forest model |
英文关键词 | annual variation; climate change; cooling; heating; spatiotemporal analysis; temperature anomaly; temperature effect; trend analysis; Bangladesh |
语种 | 英语 |
来源期刊 | Natural Hazards
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/205740 |
作者单位 | Department of Disaster Management, Begum Rokeya University, Rangpur, 5400, Bangladesh |
推荐引用方式 GB/T 7714 | Islam A.R.M.T.,Ahmed I.,Rahman M.S.. Trends in cooling and heating degree-days overtimes in Bangladesh? An investigation of the possible causes of changes[J],2020,101(3). |
APA | Islam A.R.M.T.,Ahmed I.,&Rahman M.S..(2020).Trends in cooling and heating degree-days overtimes in Bangladesh? An investigation of the possible causes of changes.Natural Hazards,101(3). |
MLA | Islam A.R.M.T.,et al."Trends in cooling and heating degree-days overtimes in Bangladesh? An investigation of the possible causes of changes".Natural Hazards 101.3(2020). |
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