Polar Vortex

Source:  IE Subject:  Geography Context: A polar vortex–driven winter storm swept across the United States in January 2026, bringing heavy snow, freezing rain and sub-zero temperatures to nearly 17 states, causing deaths and severe travel disruptions. About Polar Vortex: What it is? The polar vortex is a large, persistent area of low pressure and extremely …

Explain the formation and seasonal behaviour of the polar vortex. Bring out how its weakening alters continental weather systems. Illustrate this with reference to recent extreme winter events.

Topic: Salient features of world’s physical geography Q1. Explain the formation and seasonal behaviour of the polar vortex. Bring out how its weakening alters continental weather systems. Illustrate this with reference to recent extreme winter events. (15 M) Difficulty Level: Medium Reference: IE Why the question Understanding of large-scale atmospheric circulation and its role in …

Sudden Stratospheric Warming (SSW) Event

Source:  NW Context: Meteorologists have warned that another Sudden Stratospheric Warming (SSW) event may occur in December 2025, potentially disrupting the polar vortex and sending unusually cold Arctic air into parts of the United States. About Sudden Stratospheric Warming (SSW) Event: What is SSW? Sudden Stratospheric Warming is a rapid temperature rise (up to 50°C) …

Examine the role of the polar vortex in influencing extreme weather events across the mid-latitudes. How does its weakening contribute to global climate anomalies?

Topic: World Geography Q2. Examine the role of the polar vortex in influencing extreme weather events across the mid-latitudes. How does its weakening contribute to global climate anomalies? (10 M) Difficulty Level: Medium Reference: InsightsIAS Why the question The polar vortex’s role in extreme weather has gained prominence due to increasing cold waves, heat domes, …

Polar Vortex

Source:  IE  Context: A severe winter storm recently struck the United States, affecting 60 million people across 30 states, causing power outages and dangerous road conditions. About Polar Vortex: What it is: The polar vortex is a massive area of low-pressure, cold air swirling in the Earth’s polar regions. It is categorized into tropospheric (surface …

Rapidly warming Arctic linked to extreme cold weather in the US

GS Paper 1 Syllabus: Important Geophysical Phenomena such as cyclones etc   Source: IE   Direction: While the earlier article explained the phenomena of bomb cyclones, today’s article highlights the probable reasons behind such an extreme weather event.       Context: In a report published in The Washington Post, scientists have once again started …

Ozone Hole

Topics Covered: Important Geophysical phenomena such as earthquakes, Tsunami, Volcanic activity, cyclone etc., geographical features and their location- changes in critical geographical features (including water-bodies and ice-caps) and in flora and fauna and the effects of such changes. Ozone Hole What to study? For Prelims and Mains: Ozone layer and hole- factors responsible, effects and …