Decadal analysis of seasonal PCI of NDJF for (a) 1980–1989, (b) 1990–1990, and (c) 2000–2011; MAMJ for (d) 1980–1989, (e) 1990–1990, and (f) 2000–2011; JASO for (g) 1980–1989, (h) 1990–1990, and (i) 2000–2011. In a year, the rainfall is 2022 mm | 79.6 inch. For all regions, precipitation was most regular during the monsoon season (Figures 4(e)–4(h)). Dhaka, Bangladesh - Monthly weather averages including average high and low Temperature, Precipitation, Pressure, Wind Charts to assist you in planning your travel, holiday or an outdoor activity at Dhaka, Bangladesh Mean two-month PCI during (a) JF; (b) FM; (c) MA; (d) AM; (e) MJ; (f) JJ; (g) JA; (h) AS; (i) SO; (j) ON; (k) ND; (l) DJ. Bangladesh is one of the world’s most vulnerable countries for climate change. The analysis showed that rainfall concentrations were most heterogeneous in nonrainfall seasons (JF, FM, MA, AM, ON, and ND) and in the transition period before and after the monsoon. Results of analysis of 40,476 cases of Bangladesh occurring during 2000–2017 indicated that 49.73% of the dengue cases occurred during the monsoon season (May–August) and 49.22% during the post-monsoon season (September–December). Precipitation is changing on global and regional scales by the influence of warming [1–4]. The analyses of periodic variation and precipitation in Bangladesh generally follow through the SW–NE direction due to the summer monsoon, while during the winter monsoon, they follow the N–S direction where JAS and JFM showed higher and lower PCI values. Owing to the height of this plateau, uplifted moisture condenses, leading to particularly heavy rainfall over northwestern Bangladesh [33]. License Not Specified ... Google+; Facebook; Daily Rainfall Data . In this study, the rainfall data from 30 meteorological observatory stations across Bangladesh were collected for the period 1980 to 2011. This enabled decadal comparisons (1980–1989, 1990–1999, and 2000–2011) between four regions, covering the whole study area. Md. Iskander et al. The authors declare that there are no conflicts of interest regarding the publication of this paper. Daily maximum temperature and normal daily rainfall data were collected for north-western region of Bangladesh for the period 1981-2008. Get the monthly weather forecast for Dhaka, Dhaka, Bangladesh, including daily high/low, historical averages, to help you plan ahead. January, the same as December, is a moderately hot winter month in Dhaka, Bangladesh, with average temperature fluctuating between 12.7°C (54.9°F) and 25.4°C (77.7°F).January is the coldest month, with an average high-temperature of 25.4°C (77.7°F) and an average low-temperature of 12.7°C (54.9°F). Two-month PCI changes in different periods from long-term mean PCI (1980–2011) (series 1 = 1980–1989, series 2 = 1990–1999, and series 3 = 2000–2011). Precipitation and its intensity are important factors on the Bangladesh climate for agricultural production [22]. Furthermore, most research has been performed on an annual or six months basis and smaller temporal-scale analyses are lacking. Rainfall on . Dhaka Temperature Yesterday. The climate in Bangladesh The climate in Bangladesh is subtropical. The decadal analysis revealed a significant differentiation during the decades of 1980–1989 and 1990–1999, while 2000–2011 showed no significant differences (Table 1). Bangladesh Rainfall and River Situation Summary as on July 13, 2018 Format News and Press Release Source. Comparatively lower values were observed in the south–east, near the Chittagong Hill Tracts (Figure 3(j)), where the distribution was moderate. The most irregular and strongly irregular distributions were observed in the OND period, which was influenced by winter weather. The distribution of the annual PCI varied from <14 in the north–east (along Sylhet, Srimangal) to >18 in the north and south–east (Figure 3(a)) near the Bay of Bengal, where a moderate-to-irregular precipitation distribution was observed. Average Monthly Rainfall 1901 - 2009 (mm) The Climate Change Knowledge Portal is a hub of information, data and reports about climate change around the world. Nevertheless, the rain gauge network of Bangladesh is very sparse throughout the country. The PCI can be used as an indicator of hydrological hazard risks such as floods and droughts [44]. The Climate Research Unit (CRU) data are also used for understanding of the model performance. High precipitation concentrations occurred in the north-northwest and south-southeast regions, but the precipitation distribution was irregular from the central to northeast regions (Figures 4(d)–4(f)). Higher PCI values were mainly identified in the eastern region and have strong seasonal influences, whereas lower PCI values were mostly observed in the northern region. For the six-month period of JD, a moderate precipitation distribution was observed. Depending on the season, the average daytime temperatures range between 25 … Precipitation in Bangladesh increased to 5.94 mm in December from 5.07 mm in November of 2015. For the JF period, the south-southeast region showed a more moderate precipitation distribution than the north–west region, while the opposite was observed for the ON period (Figures 4(a) and 4(j)). For the seasonal and three-month analyses, the values were generally moderately irregular. The PCI was calculated for annual, supraseasonal, seasonal, and three- and two-month data over a period of 30 years (1980–2011). It is mainly focused on the development of models for long term rainfall prediction of Bangladesh divisions and districts (Weather Stations). The results showed that precipitation is the most uniform during the monsoon season. The climate is tropical in Dhaka. During the six-month analysis, the JJ (January–June) period was very irregular, whereas the JD (July–December) period showed a moderate precipitation distribution. Bangladesh. Bangladesh experiences a monsoon climate and has a flood-plain topography, making it prone to hydrological disasters. Three-month PCI changes in different periods from long-term mean PCI (1980–2011) (series 1= 1980–1989, series 2 = 1990–1999, and series 3 = 2000–2011). At all scales, a PCI value of 16–20 indicates that the total precipitation is concentrated in half of the period, and a PCI value greater than 20 indicates that the total precipitation is concentrated in one-third of the period. Therefore, this indicates that the irregularities of Rainfall during Monsoon Season (June- September) are less. We advocate for effective and principled humanitarian action by all, for all. So it is much drier and warmer than in the most parts of the US or Central Europe. For short time periods, precipitation was strongly linked to season. The highest rainfall -- 142mm -- was recorded in Sitakunda in the last six hours. The results showed that precipitation concentrations were mostly irregular when rainfall was concentrated within two to four months of the year. The average temperature in Dhaka is 25.9 °C | 78.6 °F. In this study, the rainfall data from 30 meteorological observatory stations across Bangladesh were collected for the period 1980 to 2011. Based on weather reports collected during 2005–2015. The western and central areas showed significant variations and irregular distributions. For the spatial analysis of precipitation, we interpolated data from all weather stations onto a regular grid. Significant changes in the PCI values between 1980 and 1989 and between 1990 and 1999 were found for the extreme northwestern and southeastern regions. Maximum temperature yesterday: 78 °F (at 3:00 pm) Minimum temperature yesterday: 65 °F (at 6:00 am) Average temperature yesterday: 71 °F Six-month PCI of JD for (g) 980–1989; (h) 1990–1990; (i) 2000–2011. The summers here have a good deal of rainfall, while the winters have very little. This coincided with the spring and hot season, where precipitation was more irregularly distributed. Several straightforward indicators can be used to assess variability and analyze hydrological processes [26]. Climate change due to global worming is a major concerning issue in the world. Bangladesh is renowned for agricultural-based country where about 80% of people are directly or indirectly involved in agricultural activities as their main profession [21]. BD, Bangladesh; NNWR, north-northwest region; CR, central region; ESER, east-southeast region; SSWR, south-southwest region. The purpose of this study was to analyze precipitation concentration rates in different regions of Bangladesh using the precipitation concentration index (PCI) and the inverse distance weighting method. These are consistent areas of high altitude where soil conditions and growth capabilities differ from the rest of the country. On average, December is the driest month. Overall, the north–west area showed the highest PCI values (>20), while the central, south, and east areas had moderate values and irregular distributions. Although there is no single research method that can comprehensively examine changes in precipitation over time, it is worth considering how different methods can be applied to certain situations [24]. JFM had moderate and irregular distributions during 1980–1989 and 1990–1999 but irregular and strongly irregular values during 2000–2011 (Figures 6(a)–6(c)). Latest humanitarian reports, maps and infographics and full document archive. 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