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volume 48 issue 5 (october 2014) : 379-383,   Doi: 10.5958/0976-058X.2014.01318.3

CHANGES OF RAIN WATER BALANCE IN JORHAT DISTRICT OF ASSAM, INDIA

A
Abhijit Sarma*
K
Kushal Sarmah1
M
Munu Devi
K
K. Pathak
1AICRP on Water Management, Department of Agronomy, Assam Agricultural University, Jorhat – 785 013, India
Cite article:- Sarma* Abhijit, Sarmah1 Kushal, Devi Munu, Pathak K. (2025). CHANGES OF RAIN WATER BALANCE IN JORHAT DISTRICT OF ASSAM, INDIA. Indian Journal of Agricultural Research. 48(5): 379-383. doi: 10.5958/0976-058X.2014.01318.3.

ABSTRACT

The surface water and groundwater resources of a region play a major role in agriculture, livestock production, industrial activities, forestry and fisheries. In this work, monthly, seasonal and annual trends of rainfall balance have been studied using monthly data series of 36 years (1975–2011). The analysis revealed that except for May, rainfall balance decreased in all the months as indicated by Man-Kendall rank statistics. The results of the linear trend lines for the period of study clearly demonstrated a general tendency for a decrease in monsoon rainfall balance in the area. Mann-Kendall test also showed a decreasing monsoon rainfall balance at 6% probability level.  Pre-monsoon balance showed non-significant increase (72% probability level) while post monsoon balance showsed non-significant decrease (75% probability level). Overall annual balance decreased at 27%  probability level.

REFERENCES

  1. Bruno, I.P.; Silva, A.L.; Reichardt, K.; Dourado-Neto, D.; Bacchi, O.O.S. and Volpe, C.A. (2007). Comparison between climatological and field water balances for a coffee crop. Sci. Agricola 64: 215-220.
  2. Cislaghi, M.; De Michele, C.; Ghezzi, A. and Rosso R. (2005). Statistical assessment of trends and oscillations in rainfall dynamics: analysis of long daily Italian series. Atmospheric Res. 77 : 188-202.
  3. Hamon, W.R. (1961). Estimating potential evapotranspiration. J. Hydraul Div Proc Am Soc Civil Eng 87 :107–120.
  4. IPCC, (2007). Climate Change 2007: Impacts, Adaptation, and Vulnerability. Contribution of Working Group II to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change [Parry, Martin L., Canziani, Osvaldo F., Palutikof, Jean P., van der Linden, Paul J., and Hanson, Clair E. (eds.)]. Cambridge University Press, Cambridge, United Kingdom, 1000 pp.
  5. Sparovek, G.; Jong Van Lier, Q. and Dourado-Neto, D. (2007). Computer assisted Köppen climate classification for Brazil. Int. J. Climatology 27: 257-266.
  6. Thornthwaite, C. W. and Mather, J. R. (1955). The water balance. Climatology, Vol. 1. Desert Institute of Technology, Centre Town, New Jersey
  7. Wolock, D.M. and McCabe, G.J. (1999). Effects of poten­tial climatic change on annual runoff in the conterminous United States: J. Am. Wat. Res. Assoc. 35 :1341–1350.
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Indian Journal of Agricultural Research
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    volume 48 issue 5 (october 2014) : 379-383,   Doi: 10.5958/0976-058X.2014.01318.3

    CHANGES OF RAIN WATER BALANCE IN JORHAT DISTRICT OF ASSAM, INDIA

    A
    Abhijit Sarma*
    K
    Kushal Sarmah1
    M
    Munu Devi
    K
    K. Pathak
    1AICRP on Water Management, Department of Agronomy, Assam Agricultural University, Jorhat – 785 013, India
    Cite article:- Sarma* Abhijit, Sarmah1 Kushal, Devi Munu, Pathak K. (2025). CHANGES OF RAIN WATER BALANCE IN JORHAT DISTRICT OF ASSAM, INDIA. Indian Journal of Agricultural Research. 48(5): 379-383. doi: 10.5958/0976-058X.2014.01318.3.

    ABSTRACT

    The surface water and groundwater resources of a region play a major role in agriculture, livestock production, industrial activities, forestry and fisheries. In this work, monthly, seasonal and annual trends of rainfall balance have been studied using monthly data series of 36 years (1975–2011). The analysis revealed that except for May, rainfall balance decreased in all the months as indicated by Man-Kendall rank statistics. The results of the linear trend lines for the period of study clearly demonstrated a general tendency for a decrease in monsoon rainfall balance in the area. Mann-Kendall test also showed a decreasing monsoon rainfall balance at 6% probability level.  Pre-monsoon balance showed non-significant increase (72% probability level) while post monsoon balance showsed non-significant decrease (75% probability level). Overall annual balance decreased at 27%  probability level.

    REFERENCES

    1. Bruno, I.P.; Silva, A.L.; Reichardt, K.; Dourado-Neto, D.; Bacchi, O.O.S. and Volpe, C.A. (2007). Comparison between climatological and field water balances for a coffee crop. Sci. Agricola 64: 215-220.
    2. Cislaghi, M.; De Michele, C.; Ghezzi, A. and Rosso R. (2005). Statistical assessment of trends and oscillations in rainfall dynamics: analysis of long daily Italian series. Atmospheric Res. 77 : 188-202.
    3. Hamon, W.R. (1961). Estimating potential evapotranspiration. J. Hydraul Div Proc Am Soc Civil Eng 87 :107–120.
    4. IPCC, (2007). Climate Change 2007: Impacts, Adaptation, and Vulnerability. Contribution of Working Group II to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change [Parry, Martin L., Canziani, Osvaldo F., Palutikof, Jean P., van der Linden, Paul J., and Hanson, Clair E. (eds.)]. Cambridge University Press, Cambridge, United Kingdom, 1000 pp.
    5. Sparovek, G.; Jong Van Lier, Q. and Dourado-Neto, D. (2007). Computer assisted Köppen climate classification for Brazil. Int. J. Climatology 27: 257-266.
    6. Thornthwaite, C. W. and Mather, J. R. (1955). The water balance. Climatology, Vol. 1. Desert Institute of Technology, Centre Town, New Jersey
    7. Wolock, D.M. and McCabe, G.J. (1999). Effects of poten­tial climatic change on annual runoff in the conterminous United States: J. Am. Wat. Res. Assoc. 35 :1341–1350.
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