Fig. 3: Inter-annual variability and its trends over NEI.
From: Present and future of the South Asian summer monsoon’s rainy season over Northeast India
The box averaged time-series and its linear trends of anomalous a onset day, b withdrawal day, c LRS, d TISM, e accumulated rainfall, f VIMFC, g Wind convergence at 850 hPa, and h precipitable water are shown. The 95% significance level of trends is tested with the Mann–Kendall nonparametric method. The trend with p < 0.05 is significant. Here, the +ve (−ve) anomaly of onset day means ‘delay (early)’ monsoon onset and vice versa for Withdrawal day. The data used in this figure is from NCEP-v3 (1901–2015), except for ‘Rainfall’, which is of the NEI24 dataset (1920–2009). The computations for d–h are done for the summer monsoon season (i.e., days between ‘Onset’ and ‘Withdrawal’ day for a year, as defined from ΔTT).
