Figure 1
From: Anthropogenic influence on the changing risk of heat waves over India

Spatial distribution of the observed Heat Wave Magnitude Index daily (HWMId) values estimated using IMD gridded data from 1961–2015. (a) Maximum heat waves occurred during the year based on HWMId values. (b) Maximum observed HWMId values. (c) Changes in HWMId values per decade. (d) Time series of percentage of the land area affected by heat waves over India (3 < HWMId ≤ 6; 6 < HWMId ≤ 9; HWMId > 9). (Figure was created using the Interactive Data Language (IDL) version 8.2 software, http://www.harrisgeospatial.com/docs/whats_new_in_82.html).