Abstract
This research aims to assess the changes that have occurred over a time in hydro-meteorological parameters over Lower Narmada River basin (LNRB) in India. The spatio-temporal trend distribution of rainfall for three data span 1962–2013, 1975–2013, 1998–2013, and maximum (max.) and minimum (min.) temperature at annual-scale for time span 1979–2013 have been represented over LNRB. The spatial distribution of these trends is associated with land use and land cover (LULC) and its changes and the local dynamics and anthropogenic activities of the region. Spatial-temporal distribution of trend of annual rainfall has shown that positive and higher trend rate proliferates in the LNRB in the time series 1998–2013. The trend rate (mm/year) in LNRB for annual rainfall is 0.84, −1.1, and 2.69 in time series 1962–2013, 1975–2013, and 1998–2013 respectively. Annual max. and min. temperature has shown 0.05° and 0.15 °C increase per decade respectively. Associating LULC of the region, it is revealed that temperature trends tend to create moderate climatic conditions on the area adjacent to sea in the region. Further, it is concluded that the forest area of the region, resists the changes related to temperature. The industrial center in the study area has shown a negative trend of annual rainfall.
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