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Status of Climatic Variations in North Western Region of Bangladesh

M. Shamsuzzoha
Department of Emergency Management, Patuakhali Science and Technology University, Dumki, Patuakhali-8602, Bangladesh

Md. Zahurul Islam
Department of Geography and Environmental Studies, Rajshahi University, Rajshahi -6205, Bangladesh

Riaz Hossain Khan
Department of Emergency Management, Patuakhali Science and Technology University, Dumki, Patuakhali-8602, Bangladesh

M. N. Amin
Department of Emergency Management, Patuakhali Science and Technology University, Dumki, Patuakhali-8602, Bangladesh

Abstract/ Executive Summary:

North-Western region of Bangladesh is just north to the tropic of cancer. The effect of Himalayan mountain chain makes the climate tropical throughout the year. Considerable variations in climate are a continuous process over time and space here. Irregularity of rainfall and temperature affects on different aspects of the entire part. For this reason the study has attempted to examine the spatio-temporal climatic variations in this region. To perform the study, climatic data are collected from different meteorological centers of this region. The data on elements of climate i.e. temperature, wind and rainfall then analyzed and interrelated. The study revels that different climatic parameters had significant variations in this study duration at North West region of Bangladesh due to some significant factors. Finally, the study suggested the climatic variations in the north-western region are really an added up to the irregular climate change situation over the world.

Keywords: Climate, Variation, North Western region, Bangladesh

Location: North-Western region of Bangladesh

Start Date: 00-00-2008

End Date: 00-00-2008

Program Area: Risk Management in Agriculture

Non-commodity: Adoption and mitigation technology

Objectives:

1. To examine the climatic conditions and to analyze its spatio-temporal variations in the north western region of Bangladesh. Recent trends on climate change can be best understood by an analysis of its components.

Methodology:

Study site: The study regions are Rajshahi and Rangpur divisions located in the north western part of Bangladesh and extends from 23⁰80' to 26⁰38' N latitude and from 88⁰01' to 89⁰70' E longitude with an area of about 34513 sq. km. Except the Barind Tract, most of this region is a low-laying plain land. It is surrounded by India in the west and north, Dhaka division in the east and Khulna division in the south. The north western region consists of five former greater districts. Five weather stations in all, one from each greater district were selected for this study. The stations are scattered around the division. Data analysis: The analyzed variables of this study included wind, rainfall and temperature. The time series data of these variables were obtained from the Bangladesh Meteorological Department (BMD), Dhaka. Information of climate have been collected from various sources i.e., books, journals, research bodies and official records. Qualitative and quantitative analysis with map have been made for the collected data and interpreted using geographical information systems (GIS) and statistical techniques. Simple mean (M) have been used in this work. For analyze the climatic data of this study, there have widely used standard deviation (SD) which was calculated here by summing the square of the deviation of each value from the mean, dividing the number of cases and than taking the square root. The selected stations did not have any missing values. Wherever monthly data was missing, it was completed with the average value for that month.

Source of Information: J. Agrofor. Environ. 5 (2): 57-61, 2011; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The study revels that different climatic parameters had significant variations in this study duration at North West region of Bangladesh due to some significant factors. Finally, the study suggested the climatic variations in the north-western region are really an added up to the irregular climate change situation over the world.

Knowledge Management: Journal