Delhi Heatwave: What's causing the extreme temperatures in the national capital?
India Meteorological Department (IMD) has issued a series of alerts, indicating the severity of the situation. Here's a comprehensive look at the factors contributing to Delhi's scorching heat and its impact on residents.
Heatwave Alerts and Conditions
The IMD has issued an orange alert for Monday and yellow alerts for Tuesday and Wednesday. The city has already endured eight consecutive days of heatwave conditions, including three particularly warm nights. A heatwave is officially declared when the maximum temperature exceeds 40 degrees Celsius and is at least 4.5 degrees above normal. A severe heatwave occurs if the maximum temperature exceeds 45 degrees Celsius or is 6.5 degrees or more above normal.
What Drives a Heatwave?
Delhi's high daytime temperatures are attributed to dry and warm westerly winds blowing from Rajasthan and south Haryana. The city is also experiencing partly cloudy skies under the influence of a western disturbance, which prevents the night temperature from dropping significantly, leading to warm nights.
Impact of Global Warming
Heatwave to continue in Delhi for few more days, rain likely on Thursday
Climate scientist Madhavan Rajeevan has linked the longer spell of heatwaves to global warming, stating that it is contributing to the natural variability. «We will tend to get more frequent, longer, and stronger heatwaves,» he said in an interview with TOI, emphasizing the need for better preparedness.
Urban Heat Island Effect
Delhi's urban heat island phenomenon
