Table 1.
List of studies assessing rainfall and temperature trends in Bangladesh.
The studies are grouped by geographic domain.
Fig 1.
Divisional administrative boundary (black bold font), land cover and location of the 34 climate stations in Bangladesh (red bold font).
Source of administrative boundary shapefile: https://data.humdata.org/dataset/administrative-boundaries-of-bangladesh-as-of-2015.
Fig 2.
Data availability (black and grey bars) and gaps for the 34 climate stations across eight administrative divisions in Bangladesh.
Table 2.
List of climate metrics (linked to agricultural production) used for trend analyses in this study.
The subscript ‘wet’ pertains to the wet season (May to October), the subscript ‘dry’ pertains to the dry season (November to April).
Table 3.
Summary of trend results based on Mann-Kendall test and Sen’s slope estimator for the 34 weather stations (arranged according to administrative division, in bold) for the wet season (May to October), (p < 0.10 = *, p < 0.05 = **, p < 0.01 = ***,—sign indicates decreasing trend).
Table 4.
Summary of trend results based on Mann-Kendall test and Sen’s slope estimator for the 34 weather stations (arranged according to administrative division, in bold) for the dry season (November to April) (p < 0.10 = *, p < 0.05 = **, p < 0.01 = ***,—sign indicates decreasing trend).
Fig 3.
Variability and trends for the wet season total rainfall (RSEAwet).
The top row depicts the geographical locations of the 34 climate stations showing the mean (in mm per season, left map), coefficient of variation (CV in %, middle map) and Sen-slope (S, in mm per season per year, right map) in circles with graduated colours and significant S values (p<0.1) shown with a smaller black interior dot. In the rest of rows, time-series (blue lines) of RSEAwet for the 34 climate stations (sorted in alphabetical order) and S (green lines) are shown. Summary information in each plot includes the mean, CV, MK statistic and S.
Fig 4.
Variability and trends for the seasonal total rainfall for the dry season (RSEAdry).
The top row depicts the geographical locations of the 34 climate stations showing the mean (in mm per season, left map), coefficient of variation (CV in %, middle map) and Sen-slope (S, in mm per season per year, right map) in circles with graduated colours and significant S values (p<0.1) shown with a smaller black interior dot. In the rest of rows, time-series (blue lines) of RSEAdry for the 34 climate stations (sorted in alphabetical order) and S (green lines) are shown. Summary information in each plot includes the mean, CV, MK statistic and S.
Fig 5.
Variability and trends for the maximum number of consecutive dry days when daily precipitation goes below 1 mm for the dry season (November to April, RCDDdry).
The top row depicts the geographical locations of the 34 climate stations showing the mean (in mm per season, left map), coefficient of variation (CV in %, middle map) and Sen-slope (S, in mm per season per year, right map) in circles with graduated colours and significant S values (p<0.1) shown with a smaller black interior dot. In the rest of rows, time-series (blue lines) of RCDDdry for the 34 climate stations (sorted in alphabetical order) and S (green lines) are shown. Summary information in each plot includes the mean, CV, MK statistic and S.
Fig 6.
Variability and trends for the mean daily maximum temperature for the wet season (April to October, Tmaxwet).
The top row depicts the geographical locations of the 34 climate stations showing the mean (in mm per season, left map), coefficient of variation (CV in %, middle map) and Sen-slope (S, in mm per season per year, right map) in circles with graduated colours and significant S values (p<0.1) shown with a smaller black interior dot. In the rest of rows, time-series (blue lines) of Tmaxwet for the 34 climate stations (sorted in alphabetical order) and S (green lines) are shown. Summary information in each plot includes the mean, CV, MK statistic and S.
Fig 7.
Variability and trends for the mean daily maximum temperature for the dry season (October to March, Tmaxdry).
The top row depicts the geographical locations of the 34 climate stations showing the mean (in mm per season, left map), coefficient of variation (CV in %, middle map) and Sen-slope (S, in mm per season per year, right map) in circles with graduated colours and significant S values (p<0.1) shown with a smaller black interior dot. In the rest of rows, time-series (blue lines) of Tmaxdry for the 34 climate stations (sorted in alphabetical order) and S (green lines) are shown. Summary information in each plot includes the mean, CV, MK statistic and S.
Fig 8.
Variability and trends for the mean daily minimum temperature for the wet season (April to October, Tminwet).
The top row depicts the geographical locations of the 34 climate stations showing the mean (in mm per season, left map), coefficient of variation (CV in %, middle map) and Sen-slope (S, in mm per season per year, right map) in circles with graduated colours and significant S values (p<0.1) shown with a smaller black interior dot. In the rest of rows, time-series (blue lines) of Tminwet for the 34 climate stations (sorted in alphabetical order) and S (green lines) are shown. Summary information in each plot includes the mean, CV, MK statistic and S.
Fig 9.
Variability and trends for the mean daily minimum temperature for the dry season (November to March, Tmindry).
The top row depicts the geographical locations of the 34 climate stations showing the mean (in mm per season, left map), coefficient of variation (CV in %, middle map) and Sen-slope (S, in mm per season per year, right map) in circles with graduated colours and significant S values (p<0.1) shown with a smaller black interior dot. In the rest of rows, time-series (blue lines) of Tmindry for the 34 climate stations (sorted in alphabetical order) and S (green lines) are shown. Summary information in each plot includes the mean, CV, MK statistic and S.
Fig 10.
Variability and trends for the number of days with temperature >36°C for the wet season (April to October, T36wet).
The top row depicts the geographical locations of the 34 climate stations showing the mean (in mm per season, left map), coefficient of variation (CV in %, middle map) and Sen-slope (S, in mm per season per year, right map) in circles with graduated colours and significant S values (p<0.1) shown with a smaller black interior dot. In the rest of rows, time-series (blue lines) of T36wet for the 34 climate stations (sorted in alphabetical order) and S (green lines) are shown. Summary information in each plot includes the mean, CV, MK statistic and S.
Fig 11.
Variability and trends for the number of days with temperature <12°C for the dry season (November to March, T12dry).
The top row depicts the geographical locations of the 34 climate stations showing the mean (in mm per season, left map), coefficient of variation (CV in %, middle map) and Sen-slope (S, in mm per season per year, right map) in circles with graduated colours and significant S values (p<0.1) shown with a smaller black interior dot. In the rest of rows, time-series (blue lines) of T12dry for the 34 climate stations (sorted in alphabetical order) and S (green lines) are shown. Summary information in each plot includes the mean, CV, MK statistic and S.