chromospheric
Adjective
Meaning
Of or pertaining to the chromosphere.
Source: Webster's dictionaryExamples
An emission in white light is only seldom observed: usually, flares are only seen at extreme UV wavelengths and into the X-rays, typical of the chromospheric and coronal emission.
The images in orange (on the left) refers to chromospheric plasma, while that one in green (on the right) to the corona.
Their temperature is about 5000–8000 K, and so they are usually considered as chromospheric features.