Published Date: Mar 27, 2018. In 2014, drought shifted to central and eastern region and affected about 57% of the study area by severe and moderate drought conditions. Natural Hazards 46: 391-413, Impact of climate change on irrigation water demand of dry season Boro rice in northwest Bangladesh. The alpha and beta parameters of the gamma probability density function are estimated for each station, for each time scale of interest (3 months, 12 months, 48 months, etc. Thorn [22] found the gamma distribution to fit climatological precipitation time series well. Geographic Information System (GIS) has been used for mapping of spatial extent of meteorological drought from point data. J Earth Sci Clim Change 9: 457. Water Resources and Hydropower Engineering 41: 78-82, [From(publication date): 0-2018 - Dec 12, 2020]. To develop map and the spatial extents of drought hazards in different time steps, a study was carried out by Shamsuddin and Behrawan [9] using Standardized precipitation index [10,11] method. Among others, the Colorado Climate Center, the Western Regional Climate Center, and the National Drought Mitigation Center use the SPI to monitor current states of drought in the United States. In the same year, Northern region, most of the central region and some area of eastern region were affected by extreme and severe drought conditions. Theor Appl Climatol 119: 679–688, Some methods of climatological analysis. Most of the regions of Bangladesh were affected by different types of drought in 2006 and 2010. 3)Climatological Summery of Bangladesh 4)Impact of climate change in Bangladesh 5)Description of winter 6)Rainfall analysis 7)Temperature analysis 8)Prediction. So, agricultural planners and irrigation engineers should take necessary steps to mitigate drought vulnerability based on agro-climatic conditions of Bangladesh. Figure 2: Percentage of drought area in Pre-Kharif season over different regions of Bangladesh (a) Central Region (CR), (b) Eastern Region (ER), (c) Southern and Western Region (SWR) and (d) Northern Region (NR). Computation of the SPI involves fitting a gamma probability density function to a given frequency distribution of precipitation totals for a station. Three distinct seasons can be recognized from climatic point of view: the dry winter season Rabi (November to February), the pre-monsoon hot summer season Pre-Kharif (March to May), and the rainy monsoons season Kharif (June to October) [6]. BMD Service Users List; Organogram; Contact Us . All drought affected areas were experienced by moderate, severe and extreme droughts in several years during the study period in three seasons. Highest percentage (61.29%) of dry period was found in Kutubdia (Table 2). In drought condition of 2005 (Figure 8), Dhaka, Satkhira, Bhola, Rangamati and cox’s Bazar and its neighborhood areas were affected by severe and moderate drought. The dry periods of most of the stations were ranges from 45% to 55% (Table 2). The resulting parameters are then used to find the cumulative probability of an observed precipitation event for the given month and time scale for the station in question. In 2012, eastern regions were severely affected, and some area of central region and south-western region were moderately affected by meteorological drought. Major finding of this study was Pre-Kharif and Rabi season were the most vulnerable to meteorological drought that indicates high seasonal rainfall anomaly in most of the regions of Bangladesh. Some of the broadly used drought indices include Palmer Drought Severity Index (PDSI), Surface Water Supply Index (SWSI), Standardized Precipitation Index (SPI), Reclamation Drought Index (RDI) and Crop Moisture Index (CMI). The most common first order two states Markov Chain Model [24] was used to assess the dry and wet periods of all studied stations. Accepted Date: Mar 23, 2018 / Data on Daily and Monthly aggregate of rainfall of the whole of Bangladesh. It is the principal agency responsible for meteorological observations, weather forecasting and seismology. Meteorological drought assessment of northern region. [23] to determine the cumulative probability. Weather is generally fair over the Andaman sea and North Bay and a few cloud to partly cloudy elsewhere over the Bay of Bengal. Content of this site is available under Creative Commons Attribution 4.0 License Copyright © Two different procedures have been applied for estimating the short duration rainfall intensities. On the other hand, highest eighteen years normal drought in Jessore and seventeen years normal drought was happened in Khulna and Patuakhali station. Also, in Rabi season, the highest increasing rate of droughts areas were found in eastern region (11.11%) followed by northern region (8.22%), southern and western region (7.56%) and central region (6.79%) per 10 years (Figure 4). The summers here have a good deal of rainfall, while the winters have very little. The significant drought conditions were found in Kharif season in 1981, 1985, 1992, 1994, 2006 and 2012 and in Rabi season same condition was found in 1985, 1986, 2005, 2006, 2009, 2010 and 2012. A timely adequate rain showed an increase in the crop yield. Outline of presentation 1)About BMD 2)Present forecasting status. • The meteorological activities started in this country in 1877 through the establishment of one observatory in Satkhira … In severely drought prone areas, yield losses may exceed 50 percent where in general it varies from 35 to 45 percent depending on rainfall, soil types and planting time of the crops. Bangladesh Meteorological Department Home; Service. The BMD observation network density is low, in some cases observation sites are located about 25km apart, whereas theseare about 145kmapartinsomeothersareas (Figure 1).Anumberofgrids Meteorological drought; Rainfall data; Spatial analysis; SPI" />. American Meteorological Society: Anaheim, CA 179–184, Drought monitoring with multiple time scales. The Köppen-Geiger climate classification is Aw. "NOUL" will be moved to the west and then... Department of Meteorology and Hydrology (Myanmar), Condition of La Nina during Winter Season, 2017-2018, Early/ Mid/ Late/ Winter Monsoon Weather Forecast, Early/ Mid/ Late/ Winter Monsoon Water Level Forecast, City Weather Forecast for States and Regions (29.11.2020), Condition of La Nina during Winter Season, 2017, Agro-Met Bulletin for 2nd Dekad of November, 2018. The significant drought events were found in 1992, 2008, 2012 and 2014 in Pre-Kharif, 1981, 1985, 1992, 1994, 2006 and 2012 in Kharif and 1985, 1986, 2005, 2006, 2009, 2010 and 2012 in Rabi season. Cyclone; Hydrological Disaster. From these three seasons the highest percentage of dry period was found in Pre-Kharif season. DataApp; On Line Data Purchase; Jobs; Result; Headquarter & Other Stations; About Us. Sunrise : 6:30 AM Sunset : 5:12 PM. ... served from datalibrary.bmd.gov.bd. Early drought delays transplanting as well as harvesting time of aman rice which affects the cultivation of rabi crops after T. Aman. Weather Clim Extremes 1: 42–50, Spatio-temporal analysis of meteorological drought variability in the Indian region using standardized precipitation index. Monsoon rainfall of Dhaka. • Bangladesh Meteorological Department is a government organization under the administrative control of the Ministry of Defence. 1971, it became Bangladesh Meteorological Department (BMD). Therefore, during Rabi season central region of Bangladesh was found large wet period than others region. Variations of drought areas were also plotted and investigated by different seasons (Pre-Kharif, Kharif and Rabi) of Bangladesh. Figure 3: Percentage of drought area in Kharif season over different regions of Bangladesh (a) Central Region (CR), (b) Eastern Region (ER), (c) Southern and Western Region (SWR) and (d) Northern Region (NR). Again, from the spatial variation of meteorological drought in Kharif season (Figure 7), it is seen that the severe and moderate drought events were occurred in few parts of northern region, south-western region, central region and eastern region in 1981, which was 31% of total area. Dew-Drop. The base data for this work has been collected from Bangladesh Meteorological Department. 3. Engg. The Köppen-Geiger climate classification is Aw. In general drought is classified as meteorological, agricultural and hydrological droughts which are differing from one another by depending on intensity, duration and spatial coverage [1]. Time series of annual drought percentage of area for all study station of Bangladesh (and various regions within) were calculated based on the ratio of the number of stations with SPI ≤ 1.0 to the related total number of study stations or the regions [25]. The gamma distribution is defined by its frequency or probability density function: Figure 1: Study region and meteorological stations of Bangladesh. The SPI computation for a specific time scale and location requires a long term monthly precipitation data. Bangladesh BMD monthly rainfall Bangladesh BMD monthly rainfall: Bangladesh Meteorological Department. Al-Mamun A, Rahman MNF, Aziz MA, Qayum MA, Hossain MI, et al. It was the heaviest rainfall in Islamabad in the past 100 years. Bangladesh Meteorological Department (BMD) provides the climate data under the following terms and conditions: Please read and understand these Terms and Conditions and abide by them when you buy data. In Pre-Kharif season, it was revealed that one-year extreme drought in Comilla, Faridpur and Mymensingh stations; two years severe droughts in Comilla, Dhaka, Faridpur and Tangail stations; six years moderate droughts in Madaripur station and maximum sixteen years normal droughts was occurred in Dhaka and Comilla stations. BMD Service Users List; Organogram; Contact Us . However, there is a distinct seasonal pattern in the annual cycle of rainfall, which is much more pronounced than the annual cycle of temperature. Bangladesh Meteorological Department Home; Service. Open Access Journals gaining more Readers and Citations, Meteorological Drought Index Mapping in Bangladesh Using Standardized Precipitation Index during 1981–2010, Advances in Meteorology, Application of standardized precipitation index to assess meteorological drought in Bangladesh. Data and methodology. The Bangladesh Meteorological department is acknowledged for providing observational data. Daily Rainfall Data . All Rights Reserved. The summers here have a good deal of rainfall, while the winters have very little. List of Scientist; List of Engineers; AWS Data; WB Project. This has caused major disruption, displacement and loss of life, and once again highlighted the importance of national meteorological and hydrological services in protecting public safety. Drought is nothing but a natural disaster which prevails due to scarcity of water or moisture. Rainfall The single most dominant element of the climate of Bangladesh is the rainfall. The highest percentage of dry period were found in Ishurdi (55.56%) followed by Syedpur (52%), Rajshahi and Bogra (50%) in Pre- Kharif season. Dataset Info These fields are compatible with DCAT, an RDF vocabulary designed to facilitate interoperability between data catalogs published on the Web. ABSTRACT Spatial distribution of categorical monsoon rainfall used in Bangladesh Meteorological Department (BMD) over Bangladesh during 1985-2014 using daily rainfall is accomplished in this study. Monthly precipitation data of 35 meteorological stations were taken from Bangladesh Meteorological Department for a maximum period of 36 years from 1980 to 2015. In Rabi season, three years extreme droughts occurred in Feni; four years severe droughts in Cox’s Bazar, Rangamati, Sitakunda and Srimangal; nine years moderate droughts in Sandwip and seventeen years normal droughts in Sylhet during study period. Meteorol Appl 19: 256–264, Performance of drought indices for ecological, agricultural, and hydrological applications. In case of Rabi season, highest two years extreme drought was in Mongla and four years severe drought was found in Bhola. The highest frequencies of dry period were 60.00% in Syedpur and 44.44% in Rangpur. In this study, drought intensity was investigated for three cropping seasons of Bangladesh. The record breaking rain fell in just 10 hours. Figure 5 presented the changes and linear trends of drought areas during 1980-2015 over different seasons of Bangladesh. DOI: 10.4172/2157-7617.1000457. This study provides a broad knowledge about spatial and temporal variations of meteorological droughts over different regions of Bangladesh during the period 1980-2015. Bangladesh is a more vulnerable to climate change due to its geographical condition. p: 735, Are droughts becoming more frequent or severe in China based on the Standardized Precipitation Evapotranspiration Index: 1951–2010? Jalpa and Parekh [12] studied various drought indexes and concluded that SPI permits comparisons over space and time better than any other index. Rainfall : 0 mm; Wind : 5 kph . In 2006, northern region was mostly affected by extreme, severe and moderate drought conditions which covered about 31% of area of Bangladesh. The Bangladesh Meteorological Department (BMD) maintains 34 hydrometeorological observatories in the country where observation, recording and archiving of rainfall data are done. Rainfall prediction is very important for the Bangladesh … In Pre-Kharif season, moderate, severe and extreme drought events were occurred about 41% of total area in 1995 and affected northern, south-western and few eastern regions which covered by Rajshahi, Dinajpur, Rangpur, Bogra, Jessore, Chuandanga, Sylhet, Bhola and its neighborhood areas (Figure 6). ), and for each month of the year. And the highest percentage (58.33%) of dry period was found in Sylhet station (Table 2). Figure 6: Representative photomicrograph of histopathological features in pulmonary necropsies. The Standardized Precipitation Index (SPI) was computed in three different cropping seasons namely, Pre-Kharif, Kharif and Rabi based on the monthly precipitation data of thirty-five meteorological stations over Bangladesh during the period 1980–2015. Dew-Drop Vol.2 No.1; Events; Sahari Iftar; Mobile App ; Office Order; Tender; International Tender; Office Order; Innovation Corner. Earth Interact 16: 1–27, Monitoring meteorological and agricultural drought dynamics in Barind region Bangladesh using standard precipitation index and Markov chain model. On the other hand, two extreme droughts in Rajshahi, three severe droughts in Dinajpur, fifteen normal droughts in Bogra and five moderate droughts in Bogra and Ishurdi were prevailed during Kharif season. Environment. The most significant increasing trend of drought area was found in Rabi season and decreasing trend was found in Kharif season. Department of Meteorology and Hydrology (Myanmar) In southern and western regions, Jessore, Satkhira, Khulna, Bhola, Barisal and its neighborhood areas; from central regions, Dhaka, Faridpur, Feni, Tangail and its neighborhood areas and from eastern regions, Chittagong, Rangamati hill areas and most of the northern region were more vulnerable to meteorological drought. Bangladesh Meteorological Department Home; Service. Climate Change and World Food Security, NATO ASI series: Ser. Natural Hazards 46: 391–413, The relationship of drought frequency and duration to time scales. From Thorn HC, the maximum likelihood solutions are used to optimally estimate α and β: n = number of precipitation observations. From the study period, it was found that all drought affected areas were experienced by moderate, severe and extreme droughts in several years of three seasons. List of Scientist; List of Engineers; AWS Data; WB Project. **Maritime Ports have been advised to hoist Local Cautionary Signal No. Morning Humidity : 92% Evening Humidity : 43% Surface Pressure : 1014.3 hPa In Rabi season, about 50% of total area was affected by severe and moderate droughts in 1985 and mostly affected area were some part of northern, southern-western, central and eastern regions. DEPARTMENT OF METEOROLOGY AND HYDROLOGY (MYANMAR). These are Hershfield method and an empirical formula deduced by Indian Meteorological Department (IMD). Outdoor rainfall, temperature and relative humidity data of the study areas, from January’ 2011 to February’ 2012 were collected from the local stations of the meteorological department of Bangladesh. It is mainly focused on the development of models for long term rainfall prediction of Bangladesh divisions and districts (Weather Stations). During Kharif season the highest oneyear extreme drought in Comilla, Dhaka and Madaripur; severe three year’s drought in Faridpur and Mymensingh; moderate five years drought was occured in Comilla. And highest drought year in Rabi season were 1985, 1986, 2005, 2006, 2009, 2010 and 2012. Heavy Rainfall Warning; Agromet. Major finding of this study is Pre-Kharif and Rabi season were the most vulnerable to meteorological drought which indicates high seasonal rainfall anomaly in most of the regions of Bangladesh. DataApp; On Line Data Purchase; Jobs; Result; Headquarter & Other Stations; About Us. The nature of the SPI allows an analyst to determine the rarity of a drought or an anomalously wet event at a particular time scale for any location in the world that has a precipitation record. On the ther hand, Feni and Teknaf stations were found highest two years of extreme drought in Kharif season where Feni was also faced three years severe droughts; Kutubdia and Rangamati were faced four years moderate droughts and Teknaf faced sixteen years normal droughts. In case of Pre-Kharif season (Figure 2), the most significant increasing trend of drought area was found in central region with a rate of 7.18% per 10 years followed by southern and western region with a rate of 5.42% per 10 years and northern region with a rate of 1.31% per 10 years. A crop faces many biotic and abiotic stresses during their growing period. IMD is headquartered in Delhi and operates hundreds of observation stations across India and Antarctica. 1.These data must only be used by the named person(s)/institution for the sole purpose of their work / on the named project/thesis etc. The SPI value for Pre-Kharif, Kharif and Rabi seasons have been analyzed through geo-spatial analysis using GIS. Int J Geomatics Geosci 3: 511–524, The efficiency of meteorological drought indices for drought monitoring and evaluating in Kohgilouye and Boyerahmad Province, Iran. Int J Mod Eng Res 3: 2407–2411, Trends in meteorological and agricultural droughts in Iran. Seasonal variation of droughts in different region of Bangladesh. Analyzed data of meteorological drought of Pre-Kharif season showed that one-year extreme drought was occurred in Jessore and Patuakhali station; whereas the highest number of severe drought was found in Satkhira and two years extreme drought was found in Chuadanga, Khepupara, Khulna, Maijdi Court and Mongla stations. Extreme, severe and moderate drought events were found about 68% of the total area of Bangladesh in 1994. Team; Annual Work Plan; Meeting; NIS. Data and Resources. Approximately, 29% area was affected by moderate to extreme drought conditions in 2012, where south-western region and central region were suffered by extreme as well as by severe drought, and northern region was suffered by moderate drought. The following is the annual monsoon rainfall for the last few years based on data from the Bangladesh Meteorological Department. List of Scientist; List of Engineers; AWS Data; WB Project. Climatic stations Bangladesh Meteorological Department is responsible for observation, recording and archiving of climatic data for various stations in the country. Bangladesh Meteorological Department. DEPARTMENT OF METEOROLOGY AND HYDROLOGY (MYANMAR) ... Meteorological Disaster. The highest rainfall of 620 millimetres (24 in) was recorded in Islamabad during 24 hours on 23 July 2001. She found that all the three methods identified the same drought years in the N-W region of Bangladesh. Meteorological data. SPI and monthly rainfall time series dataset for the period of 1971–2010 were used to define the drought years and severity. Annual total rainfall in Khulna was increasing by 4.960 mm/year with its total rainfall 1630 mm and coefficient of determination was 0.050. Study areas are located in a tropical monsoon climate characterized by marked seasonal variations. Rainfall prediction is very important for the Bangladesh economy and day to day life. Among the all regions of Bangladesh, significant drought years of Kharif seasons were 1981, 1985, 1992, 1994, 2006 and 2012. Climate Change; Meteorology; Acid Deposition ; Articles; Environmental Affairs; Remote Sensing and GIS; Contact Us (4.12.2020) According to the observations at (12:30) hrs M.S.T today, the … Monthly rainfall records of 17 stations of Bangladesh for fifty years (1958–2007) are collected from Bangladesh Meteorological Department for the study. The calculation of Standardized Precipitation Index (SPI) [10,11] was followed in this research to assess anomalous and extreme precipitation developed the Standardized Precipitation Index (SPI) for the purpose of defining and monitoring drought [10,11]. Bangladesh Meteorological Department Home; Service. Figures 1-3 presented the changes and linear trends of drought areas (SPEI ≤ 1) from 1980 to 2015 over three cropping seasons (Pre- Kharif, Kharif and Rabi) of different regions of Bangladesh. Journal of Disaster Risk Studies 8: 280, Drought risk assessment in the western part of Bangladesh. Drought years, which were defined as years with drought percentage more than 40% [26] showed different variation patterns in different regions. Also, some researchers [18-21] used the SPI and other indexes to evaluate the spatial and temporal drought characteristics in various regions across the world. Scarcity or heavy - both rainfall effects rural and urban life to a great extent with the changing pattern of the climate. The total area of Bangladesh (latitudes 20°34´N and 26°38´N and longitudes 88°01´E and 92°41´E) is divided into northern region (NR), southern and western region (SWR), central region (CR) and eastern region (ER) for better understanding of the meteorological drought (Figure 1). The cumulative probability is given by: Letting, this equation becomes the incomplete gamma function: Since the gamma function is undefined for x=0 and a precipitation distribution may contain zeros, the cumulative probability becomes: H (x) = q + (1− q)G(x) [22] states that q can be estimated by q = m / n , where q is the probability of a zero. The most significant increasing trend of drought was found in Rabi season with a rate of 8.66% per 10 years and Pre-Kharif season with a rate of 2.57% per 10 years. (2018) Identification of Meteorological Drought Prone Area in Bangladesh using Standardized Precipitation Index. Meteorological drought assessment of eastern region. DataApp; On Line Data Purchase; Jobs; Result; Headquarter & Other Stations; About Us. Figure 5: Spatial distributions of meteorological drought in 1995, 2008, 2012 and 2014 of Pre-Kharif season. Drought Mitigation Center Faculty Publications p: 17, Analysis on aridification within last 50 years in China. Public weather call: 067-411252/01-667766. Earthquake; Tsunami; Disaster Risk Reduction; Public Education. 2020 - Open Access Publisher. Conversely, in moderate drought prone areas, yield losses fluctuate from 20 to 35 percent [7]. Thorn [22] uses tables of the incomplete gamma function to determine the cumulative probability G(x) [10] use an analytic method along with suggested software code from Press et al. Meteorological drought assessment of central region. Analyses have been done for two annual maximum data series. In 2000, a total of 5,220 millimetres (206 in) was recorded. Bangladesh - Historical Daily Rainfall Record (1948 - 2014) - Bangladesh Meteorological Department Historical daily rainfall data (mm) between 1948 to 2014, obtained from weather stations in each division of the country. I, Global environmental change 37: 309-346, Application of Palmer method in analyzing drought in Northwest region of Bangladesh, M.Sc. In addition, dry winds, less precipitation, high temperature and many other factors also responsible for causing meteorological drought. Descriptive statistics of number of drought years, percentage of dry and wet periods of Pre-Kharif, Kharif and Rabi seasons of the study periods has been presented in the Table 2. To see the beginning and termination of drought, duration and severity, Datta [8] compared the Palmer Drought Severity Index (PDSI) with the SPI and the Harbst methods. In 2001, a total of 5,590 millimetres (220 in) was recorded. Publish Date: 10 July 2020. Open Access Journals gaining more Readers and Citations700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers, Received Date: Feb 22, 2018 / This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. IJCCSM 4,1 66 Received 6 November 2010 Revised 9 April 2011 ... 3.2 Monthly rainfall simulation over Bangladesh Surface area average rainfall data collected by BMD have been used for the comparison with model simulated rainfall. The event of drought in the study area is identified using SPI in multiple time scales. Flood; Geological Disaster. Select your language of interest to view the total content in your interested language, Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals. Our Group organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members. Widespread and large droughts occurred in Pre-Kharif season in the years of 1992, 1995, 2007, 2008, 2012 and 2014 over the different regions of Bangladesh. Meteorological drought; Rainfall data; Spatial analysis; SPI"> Spatial analysis (surface interpolation by ordinary krigging) with these point data were done by the ArcGIS10. Rainfall prediction is very important for the Bangladesh economy and day to day life. (12.12.2020) Weather is generally fair over the Andaman sea and North Bay and a few cloud to partly cloudy elsewhere over the Bay of Bengal. The base data for this work has been collected from Bangladesh Meteorological Department. Spatial distributions of meteorological drought in Bangladesh. This type of analysis will clearly help to identify the intensity of drought in the study region. In a year, the rainfall is 2022 mm | 79.6 inch. pp: 233-236, On the observed variability of monsoon droughts over India. To analyze the variations of the drought areas, linear regression methods were used to detect the changing trend of the annual percentage of drought area at different significance levels for the different regions of Bangladesh. p: 53, Numerical Recipes in C, The Art of Scientific Computing. Figure 8: Spatial distributions of meteorological drought in 2005, 2006, 2010 and 2012 of Rabi season. Precipitation in Bangladesh increased to 5.94 mm in December from 5.07 mm in November of 2015. Evaluation of meteorological drought of Pre-Kharif season, it is possible to explain that two years extreme drought in Dinajpur, three years severe drought in Bogra, five years moderate drought in Ishurdi, fourteen years normal drought was occurred in Rajshahi and Ishurdi (Table 2). BMD Service Users List; Organogram; Contact Us . In pre-Kharif season, major drought events were found in 1992, 1995, 2007, 2008, 2012 and 2014. Observational data of Bangladesh Meteorological Department (BMD) has been utilized for validation of MRI-AGCM generated rainfall and temperature. The average temperature in Dhaka is 25.9 °C | 78.6 °F. The Monsoon season begins from June till September. In case of rice, early drought represses tillering and vegetative growth whereas terminal drought in Kharif season affects the heading, panicle initiation and milking stages of rice and reduces the achievable yield. The maximum amount of rainfall has been recorded in the northern part of Sylhet district and in the southeastern part of the country (Cox's Bazar and Bandarban districts). Cambridge University Press, Cambridge, England, UK. Whereas five years moderate drought was appeared in Satkhira. Monthly precipitation data of 35 meteorological stations were taken from Bangladesh Meteorological Department for a maximum period of 36 years from 1980 to 2015. Moderate and severe droughts were found in most of the northern and southern-western regions in 2012. Table 2: Descriptive statistics of number of drought years and percentage of dry and wet periods of Pre-Kharif, Kharif and Rabi seasons during 1980-2015. After that, obtained SPI value was classified according to the drought classification of World Meteorological Organization (Table 1). In Pre-Kharif season, Sitakunda faced the highest two years extreme drought, Sylhet, Cox’s Bazar and Teknaf faced four years severe droughts, Kutubdia confronted highest six years moderate droughts and Sitakunda faced sixteen years normal droughts of total drought years. DataApp; On Line Data Purchase; Jobs; Result; Headquarter & Other Stations; About Us. In addition, four years moderate drought was prevailed in Barisal, Khulna and Satkhira during rabi seasons (Table 2). The percentage of dry period was greater than 50% for all stations in southern and western region during Pre-Kharif season (Table 2).
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