Keywords Climate change, Temperature, Rainfall, SOI, IOD
Dhaka, Tangail, Mymensingh, Faridpur, Madaripur, Srimongal, Sylhet, Bogra, Ishurdi, Rajshahi, Dinajpur, Rangpur, Sayedpur, Chuadanga, Jessore, Khulna, Mongla, Satkhira, Barisal, Bhola, Khapupara, Patuakhali, Chandpur, Chittagong, Comilla, Cox`s Bazar, Feni, Hatia, Kutubdia, Maijdi Court, Rangamati, Teknaf, Sandwip and Sitakunda of Bangladesh
The rainfall and temperature data for the time period of 1948 to 2011 were obtained from Storm Warning Centre (SWC), Dhaka of Bangladesh Meteorological Department (BMD) on the basis of its 34 observation stations namely Dhaka, Tangail, Mymensingh, Faridpur, Madaripur, Srimongal, Sylhet, Bogra, Ishurdi, Rajshahi, Dinajpur, Rangpur, Sayedpur, Chuadanga, Jessore, Khulna, Mongla, Satkhira, Barisal, Bhola, Khapupara, Patuakhali, Chandpur, Chittagong, Comilla, Cox`s Bazar, Feni, Hatia, Kutubdia, Maijdi Court, Rangamati, Teknaf, Sandwip and Sitakunda. In some instances there were some missing data which were filled by the long term monthly mean of the respective months. The time series of yearly rainfall and temperature were obtained from the time series of monthly data as the total of 12 months rainfall and temperature for the individual years. The temperature and rainfall pattern of the year round and during monsoon (i.e. June to September) were analyzed on the average of per year and every five years as well as ten years basis for the time scales as mentioned above. In addition that the analyses were done on the basis of two segments which were in the whole Bangladesh and among the seven regions, i.e. Rajshahi, Barisal, Khulna, Rangpur, Dhaka, Chittagong, and Sylhet divisions. For regional analysis Khulna, Rajshai, Rangpur and Barisal divisions were considered as the west region while Dhaka, Chittagong, and Sylhet divisions were considered as east region.
Dhaka University Journal of Earth and Environmental Sciences, Vol. 4, December 2015