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Remote Sensing and GIS Technology in Bangladesh for Environmental Monitoring –a Case Study

S. Begum
Bangladesh Space Research & Remote Sensing Organization (SPARRSO)

M. Nessa
Bangladesh Space Research & Remote Sensing Organization (SPARRSO)

M. S. Alam
Bangladesh Space Research & Remote Sensing Organization (SPARRSO)

M. R. Azam
Bangladesh Space Research & Remote Sensing Organization (SPARRSO)

Abstract/ Executive Summary:

Bangladesh is one of the disasters prone country faces Cyclones, Floods, draught, Nor’westers/Tornadoes, Thunderstorm Earthquake etc. almost every year. Cyclones are the most devastating storm affecting Bangladesh, but there are other kinds of storm named Nor’westers and Tornadoes. Storms characterized by strong surface wind exceed 100 miles per hour known as tornados. They are formed suddenly, usually on land and are extremely localized. Thunderstorm and Tornado occur in pre-monsoon season frequently in Bangladesh which cause lot destruction to lives and properties and hampers sustainable development. Nor’westers come mainly from the north westerly direction (and hence the name) and are land based. They are a very common phenomenon in Bangladesh during late Chaitra and Baishak month and are known in Bengali as Kalbaishaki. The physical cause of this disaster is embodied in law of science and hence proper scientific research is necessary to deal with them. The Role of Remote Sensing and GIS technology in monitoring of such natural disasters like tornado has been described in this paper.

Keywords: Development, Environment, Monitoring, Natural Disaster, Remote Sensing, Sustainable

Location: Brahmanbaria district on Friday, 22 March, 2013

Start Date: 22-03-2013

End Date: 22-03-2013

Program Area: Risk Management in Agriculture

Non-commodity: Adoption and mitigation technology

Objectives:

1. To monitor the natural disasters ( tornado); 2. To observe its movement ; 3. To study the impact of disaster; 4. To find out its path of destruction & Track of Tornado that hit Bangladesh

Methodology:

Mainly the Remote Sensing Technology and real time Satellite data were used for this study. The images of Geo-Stationary Satellite FY-2D (China) and MTSAT (Japan) received at SPARRSO Ground Station were processed and analyzed every hourly using gmsoft and vimsat software/module. Data/Information from internet source as well as the model for international weather monitoring was also used in this study. The special bulletin of weather posted to web site by Bangladesh Meteorological Department (BMD) were used to validate the space based data. Monitoring of Tornado’2013(Case Study) A strong Tornado passed over Bangladesh in 2013 which caused colossal losses to lives and properties. It played havoc in different areas of Brahmanbaria district on Friday, 22 March, 2013. It started at 5 pm and stayed for 10-15 min. The occurrence and movement has monitored using Remote Sensing and GIS Technology at SPARRSO. The cloud picture showed that the central and northeastern part of Bangladesh was overcast with clouds and a lot of convection had begun to grow which further developed. At least 3 strong convective cells bulging out of the southern periphery of the cloud masses with tornadoic strength. The anvil clouds spread and turned suddenly to northeast direction with strong winds damaging the environment and population of the localities where it occurred. Rains and hail accompanied the twisters, which lasted more than five minutes. Impact of Tornado, 2013 The tornado devastated innumerable thatched houses, uprooted thousands of trees, damaged crops, huge property and killed 50 cows in the affected areas. 21 people were killed and over 5 hundred injured as a tornado lashed 21 villages of Sadar, Akhaura and Bijaynagar upazilas of Brahmanbaria Dist. Many electric poles were uprooted, leaving power supply snapped and standing crops on a vast tract of land also destroyed. Roofs were blown off like paper scraps, witnesses said .The most affected villages were Gaingahata, Chinair, Jibantula, Ujanishar, Gaingha, Urshiura, Shilaour, Senda, Sultanpur, Bathsala, Pagachong, Chandpur, Ghatiara, Jaritula, Dobli, Chandi, Ramrail, Machihata , Patirhata , Paikpara, Merashani of 3 upazilas including Barahmanbaria Sadar. Cloud picture of tornado can be seen from satellite image.

Source of Information: J. Environ. Sci. & Natural Resources, 7(1): 111 – 112, 2014; ISSN 1999-7361

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The monitoring and information provided by SPARRSO on time using remote sensing and GIS helped the Government and its related organizations to take necessary steps during the disaster and for post disaster management program in the respective areas for the sustainable development of the country.

Knowledge Management: Journal