期刊名称:Journal of Environmental Science and Natural Resources
印刷版ISSN:2408-8633
出版年度:2013
卷号:5
期号:2
页码:97-107
语种:English
出版社:Bangladesh Society for Conservation of Environment and Natural Resources
摘要:An attempt was made to examine the trend and variability pattern for decadal, annual and seasonal (crop seasons) average prevailing wind-speed (APWS) for six divisional stations in Bangladesh namely Dhaka, Rajshahi, Khulna, Barisal, Sylhet and Chittagong. The monthly APWS (2009-2012) were forecasted using univariate Box-Jenkin’s modeling techniques on the basis of minimum root mean square forecasting error. The growth rates for annual and seasonal APWS were found to be negative with nonstationary but normal residual for all regions except Barisal and the Prekharif season for Khulna. The rates for Barisal were observed positive with normal and nonstationary residual. The significant positive growth rate for coefficient of variations (CV) of the annual APWS was experienced for Khulna (0.155*) and the less positive rate for Rajshahi (0.011) with nonstationary residual while for others it was established as negative. The findings support that the climate of this country is changing in terms of the APWS. DOI: http://dx.doi.org/10.3329/jesnr.v5i2.14801 J. Environ. Sci. & Natural Resources, 5(2): 97-107 2012