Key Points
The ongoing cold wave conditions observed over North India result from the intrusion of cold and dry air from the Siberian High, according to a study by researchers at IISER, Mohali...
The Siberian High is a massive collection of cold dry air that accumulates in the northeastern part of Eurasia from November until February...
A severe cold wave event is identified from the normalised minimum temperature anomaly, when the standard deviation is less than minus 2 for four or more consecutive days...
The team, including K.S. Athira at IISER Mohali and V. Brahmanada Rao from the National Institute for Space Research, Brazil, also noted that the winter atmospheric blocking this year has intensified cold waves and prolonged their persistence from the end of December to January...
The researchers employed a meticulous methodology to identify cold wave events, considering the normalised minimum temperature anomaly and standard deviations...
