Trend analysis and change point detection of rainfall of Andhra Pradesh and Telangana, India

AM Waghaye, YA Rajwade… - Journal of …, 2018 - journal.agrimetassociation.org
Journal of Agrometeorology, 2018journal.agrimetassociation.org
MATERIALS AND METHODS The state of Andhra Pradesh is having two regions ie Coastal
Andhra comprised of 9 districts and Rayalaseema comprised of 4 districts. The AP state has
average rainfall of about 940 mm of which south west monsoon contributes 64 per cent and
north east monsoon 36 per cent. The Telangana state is comprised of 10 districts with mean
annual rainfall of 923 mm of which SW monsoon contributes about 80 per cent and NE
monsoon contributes 13 per cent of the annual rainfall (Annon., 2017 a, b). Monthly rainfall …
MATERIALS AND METHODS
The state of Andhra Pradesh is having two regions ie Coastal Andhra comprised of 9 districts and Rayalaseema comprised of 4 districts. The AP state has average rainfall of about 940 mm of which south west monsoon contributes 64 per cent and north east monsoon 36 per cent. The Telangana state is comprised of 10 districts with mean annual rainfall of 923 mm of which SW monsoon contributes about 80 per cent and NE monsoon contributes 13 per cent of the annual rainfall (Annon., 2017 a, b).
Monthly rainfall data for 102 years (1901-2002) of 23 stations of two states were collected from India water portal site (http://www. indiawaterportal. org/metdata last accessed on 25.09. 2017). Non parametric tests such as Mann Kendall test (Mann, 1945; Kendall, 1975) and Sen’s slope estimator (Sen, 1968) were conducted to test magnitude and direction in series. Mann Whitney Pettitt test (Pettitt, 1979) was used for change detection (Prabhakar et al., 2017).
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