Standard density altitude

{
  "id": "MLC-T-MET-009189",
  "term": "Standard density altitude",
  "field": "Meteorology and atmospheric science",
  "definition": "The altitude in the International Standard Atmosphere (ISA) at which the air density would be equal to the actual air density at a specific location and time. It is calculated from ambient atmospheric pressure, temperature, and humidity, providing a measure of aircraft and engine performance under non-standard conditions. A higher density altitude, caused by high temperatures or low pressure, corresponds to less dense air and results in reduced aircraft lift and engine power.",
  "url": "https://mlchart.com/terminology/meteorology/standard-density-altitude/"
}