Often, when we hear the name heatwave or *loo* (scorching wind), images of scorching sun and scorching afternoon heat come to our mind. But have you ever noticed that the nights are no longer as peaceful as they used to be? In recent years, an extremely dangerous weather pattern has emerged—what meteorologists call “heatwave nights” or “tropical nights.” This phenomenon is not just a sign of rising temperatures; Rather, it is a serious warning for both our health and the environment. Come, let us know about this in more detail.
After all, what are heatwave nights?
Simply put, heatwave nights are those nights when the temperature does not drop even after the sun goes down. According to meteorologists, if the temperature does not fall below 20 degrees Celsius throughout the night, it is considered a heatwave night. In such conditions, the heat from the environment is not dissipated, and the human body does not get the coolness of the night that is necessary for normal physical functioning.
Why is the night temperature increasing?
It is natural to raise the question: Why has this new pattern suddenly started emerging? Scientists believe that this is directly related to climate change. As the temperature of the oceans, land, and atmosphere rises above normal levels, the heat accumulated throughout the day remains at night. Such nights are now being recorded more frequently—especially in South Asia and the Mediterranean—providing strong evidence that global warming is accelerating.
direct effect on health
The impact of heatwave nights is not limited to just weather data; It also has a deep impact on the human body. When the temperature does not drop down at night, the body is not able to recover from the heat and fatigue of the day. Its adverse effects include:
**Poor quality of sleep:* Excessive heat makes it difficult to get deep and restful sleep.
**Physical stress:** This increases the risk of heart and respiratory health problems. Risk: For the elderly and people already suffering from any disease, this condition can prove fatal as their body is unable to withstand this continuous heat.
Is this a climate emergency?
Experts believe that “heatwave nights” is not just a new term coined by the Meteorological Department, but is a sign of a climate emergency. The definition of heatwave has now changed; This not only includes the scorching heat of the day but also the increased temperatures felt at night.
What are the preventive measures?
Experts have suggested many measures to deal with this serious crisis. Increasing greenery (green space) in urban areas is the most important need. Besides, building cooling centres, implementing human health warning systems and making policies to slow down the pace of climate change are the need of the hour.
