What does ELR stand for?

The term ELR stands for Environmental Lapse Rate. This concept refers to the rate at which air temperature decreases with an increase in altitude in the Earth's atmosphere, usually measured in degrees Celsius per kilometer. The Environmental Lapse Rate is important in understanding weather patterns, atmospheric stability, and the behavior of different air masses. It is a key concept in meteorology, as it helps predict how temperature influences the behavior of air, including the potential for cloud formation and storm development.

In typical conditions, the ELR averages around 6.5 degrees Celsius per kilometer, but it can vary depending on local atmospheric conditions, such as humidity and specific weather phenomena. Understanding the Environmental Lapse Rate is crucial for pilots, meteorologists, and anyone involved in aviation or atmospheric sciences, as it has direct implications for flight safety and weather forecasting.

The other terms listed do not accurately capture the definition and common usage of ELR within the context of atmospheric science.