Rainfall has been extensively considered as one of the initial point towards the apprehension of climate change courses. Bangladesh is recently experiencing climate change impact related to hazards like cyclone, rainfall, flood, draught etc. Climate variable like rainfall is the most important parameter which is linked with agricultural aspects too for this country. Most of the rain occurred during monsoon period in Bangladesh. This study investigates temporal variability of rainfall and liner trend models on the North-West part of Bangladesh over the period of 1975-2014 using data from the Bangladesh Meteorological Department. We computed and analyzed the linear trend models by using least square estimation. We estimated mean with standard deviation, cross-correlation and linear trends of annual and monsoon rainfall using MS Excel and SPSS v21. The variability of rainfall between the stations was measured by correlation test. The annual and monsoon rainfall has been found in decreasing trends in recent times. In some areas in the North-Western part of the country, the amount of annual and monsoon mean rainfall may be decreased abruptly comparing with average normal rainfall all over the country. The linear trend analysis of rainfall reveals a bit different trend for the last four decades. The observed data and linear trend line shows the decreasing trend of annual rainfall rate is 0.102 mm per year, whereas the decreasing trend of monsoon season rainfall rate is 0.080 mm per year. The time series statistical analysis of this study also provided the information about the correlation coefficients of rainfall among the selected five stations of the South-West region. The result of this study would hopefully help the planners and program managers to take necessary actions and to measure disaster management, agricultural production, drought mitigation, flood control etc.
| Published in | American Journal of Applied Mathematics (Volume 4, Issue 3) |
| DOI | 10.11648/j.ajam.20160403.16 |
| Page(s) | 158-162 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2016. Published by Science Publishing Group |
Variability, Linear Trend, Rainfall, Correlation, North-West, Bangladesh
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APA Style
M. Anisur Rahman, S. M. Mostafa Kamal, M. Maruf Billah. (2016). Rainfall Variability and Linear Trend Models on North-West Part of Bangladesh for the Last 40 Years. American Journal of Applied Mathematics, 4(3), 158-162. https://doi.org/10.11648/j.ajam.20160403.16
ACS Style
M. Anisur Rahman; S. M. Mostafa Kamal; M. Maruf Billah. Rainfall Variability and Linear Trend Models on North-West Part of Bangladesh for the Last 40 Years. Am. J. Appl. Math. 2016, 4(3), 158-162. doi: 10.11648/j.ajam.20160403.16
AMA Style
M. Anisur Rahman, S. M. Mostafa Kamal, M. Maruf Billah. Rainfall Variability and Linear Trend Models on North-West Part of Bangladesh for the Last 40 Years. Am J Appl Math. 2016;4(3):158-162. doi: 10.11648/j.ajam.20160403.16
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author = {M. Anisur Rahman and S. M. Mostafa Kamal and M. Maruf Billah},
title = {Rainfall Variability and Linear Trend Models on North-West Part of Bangladesh for the Last 40 Years},
journal = {American Journal of Applied Mathematics},
volume = {4},
number = {3},
pages = {158-162},
doi = {10.11648/j.ajam.20160403.16},
url = {https://doi.org/10.11648/j.ajam.20160403.16},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajam.20160403.16},
abstract = {Rainfall has been extensively considered as one of the initial point towards the apprehension of climate change courses. Bangladesh is recently experiencing climate change impact related to hazards like cyclone, rainfall, flood, draught etc. Climate variable like rainfall is the most important parameter which is linked with agricultural aspects too for this country. Most of the rain occurred during monsoon period in Bangladesh. This study investigates temporal variability of rainfall and liner trend models on the North-West part of Bangladesh over the period of 1975-2014 using data from the Bangladesh Meteorological Department. We computed and analyzed the linear trend models by using least square estimation. We estimated mean with standard deviation, cross-correlation and linear trends of annual and monsoon rainfall using MS Excel and SPSS v21. The variability of rainfall between the stations was measured by correlation test. The annual and monsoon rainfall has been found in decreasing trends in recent times. In some areas in the North-Western part of the country, the amount of annual and monsoon mean rainfall may be decreased abruptly comparing with average normal rainfall all over the country. The linear trend analysis of rainfall reveals a bit different trend for the last four decades. The observed data and linear trend line shows the decreasing trend of annual rainfall rate is 0.102 mm per year, whereas the decreasing trend of monsoon season rainfall rate is 0.080 mm per year. The time series statistical analysis of this study also provided the information about the correlation coefficients of rainfall among the selected five stations of the South-West region. The result of this study would hopefully help the planners and program managers to take necessary actions and to measure disaster management, agricultural production, drought mitigation, flood control etc.},
year = {2016}
}
TY - JOUR T1 - Rainfall Variability and Linear Trend Models on North-West Part of Bangladesh for the Last 40 Years AU - M. Anisur Rahman AU - S. M. Mostafa Kamal AU - M. Maruf Billah Y1 - 2016/06/04 PY - 2016 N1 - https://doi.org/10.11648/j.ajam.20160403.16 DO - 10.11648/j.ajam.20160403.16 T2 - American Journal of Applied Mathematics JF - American Journal of Applied Mathematics JO - American Journal of Applied Mathematics SP - 158 EP - 162 PB - Science Publishing Group SN - 2330-006X UR - https://doi.org/10.11648/j.ajam.20160403.16 AB - Rainfall has been extensively considered as one of the initial point towards the apprehension of climate change courses. Bangladesh is recently experiencing climate change impact related to hazards like cyclone, rainfall, flood, draught etc. Climate variable like rainfall is the most important parameter which is linked with agricultural aspects too for this country. Most of the rain occurred during monsoon period in Bangladesh. This study investigates temporal variability of rainfall and liner trend models on the North-West part of Bangladesh over the period of 1975-2014 using data from the Bangladesh Meteorological Department. We computed and analyzed the linear trend models by using least square estimation. We estimated mean with standard deviation, cross-correlation and linear trends of annual and monsoon rainfall using MS Excel and SPSS v21. The variability of rainfall between the stations was measured by correlation test. The annual and monsoon rainfall has been found in decreasing trends in recent times. In some areas in the North-Western part of the country, the amount of annual and monsoon mean rainfall may be decreased abruptly comparing with average normal rainfall all over the country. The linear trend analysis of rainfall reveals a bit different trend for the last four decades. The observed data and linear trend line shows the decreasing trend of annual rainfall rate is 0.102 mm per year, whereas the decreasing trend of monsoon season rainfall rate is 0.080 mm per year. The time series statistical analysis of this study also provided the information about the correlation coefficients of rainfall among the selected five stations of the South-West region. The result of this study would hopefully help the planners and program managers to take necessary actions and to measure disaster management, agricultural production, drought mitigation, flood control etc. VL - 4 IS - 3 ER -
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