Meteorology

A hygrograph is an instrument that records variations in atmospheric humidity over time. It uses a humidity-sensitive element, such as human hair, which expands or contracts with changes in moisture

A pyranometer is an instrument used to measure shortwave radiation, including both direct and diffused radiation, that reaches the Earth’s surface. It is essential in meteorology and solar energy studies.

Western disturbances are weather systems originating from the Mediterranean region and are responsible for bringing unseasonal rain to northwestern parts of India, including Rajasthan. While western disturbances themselves occur during winter, their influence is linked to interactions with the prevailing Southwest monsoon.