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Analysis of rainfall and temperature trends in northeast India
Author(s) -
Jain S. K.,
Kumar Vijay,
Saharia M.
Publication year - 2012
Publication title -
international journal of climatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.58
H-Index - 166
eISSN - 1097-0088
pISSN - 0899-8418
DOI - 10.1002/joc.3483
Subject(s) - environmental science , climatology , maximum temperature , trend analysis , mean radiant temperature , monsoon , hydropower , climate change , geography , geology , mathematics , statistics , oceanography , engineering , electrical engineering
Abstract The northeast region (NER) of India covers an area of 0.26 million km 2 . This region is one of the highest rainfall‐receiving regions on the planet. Consequently, it has huge water and hydropower potential and analysis of rainfall and temperature trends would be of interest to water and energy planners. Trends in monthly, seasonal, and annual rainfall and temperature on the subdivision and regional scale for the NER were examined in this study. Trend analysis of rainfall data series for 1871–2008 did not show any clear trend for the region as a whole, although there are seasonal trends for some seasons and for some hydro‐meteorological subdivisions. Similar analysis for temperature data showed that all the four temperature variables (maximum, minimum, and mean temperatures and temperature range) had rising trend. Notably for the post‐monsoon season, the Sen's estimator of slope ( °C/year) was 0.019, 0.011, and 0.015 for the maximum, minimum, and mean temperature, respectively. Copyright © 2012 Royal Meteorological Society