Climate crisis erases traditional rainfall vocabulary in eastern Himalayas

Communities in Northeast India and the eastern Himalayas are losing the traditional linguistic expressions and ecological knowledge used to describe and predict monsoon patterns.

These local terms, which categorize rainfall by its intensity and impact on wildlife, are fading as rapid urbanization and changing climate patterns disrupt the natural rhythms of the region. In the plains of Assam, residents historically used specific names for different types of rain.

These include "sagoli-kheda-borokhun," a light shower that only moves goats into sheds, and "gor-kheda-borokhun," a deluge so severe that it forces the one-horned rhinoceroses to seek shelter. These expressions reflect a deep cultural connection to the landscape, where people interpreted the environment through the movements of animals and the sounds of the ecosystem. Environmental changes have also silenced the natural indicators people once relied on.

The "tur-tu-rai" chorus of frogs in ponds and wetlands used to signal the approaching monsoon, but these soundscapes have diminished as wetlands are drained and water bodies disappear. In Meghalaya, the community language for a nine-day rhythmic rainfall has lost its emphasis because such long-enduring patterns have decreased. Local communities often rely on personified stories and spiritual beliefs to navigate climate risks rather than modern meteorological data.

For example, people in the region personify the annual spring storm Bordoisila, viewing its arrival and ferocity through a narrative of her returning home for the Bohag Bihu festival. However, climate change and human interventions have shifted these community sentiments from reverence to despair as floods become more erratic and destructive.