DRYTRA level


DRYTRA level
A level of temperatures at which exhaust trails must occur even if the ambient air is completely dry. This flight level is determined with the help of a chart called a tephigram. A tephigram is an aerological map on which temperatures and potential temperatures are marked along x and y axes, respectively and are used to ascertain the stability of atmosphere. The chart is prepared by a meteorologist. DRYTRA is expressed as flight level. See also tephigram.
Dry bulb thermometer.

Aviation dictionary. 2014.

Look at other dictionaries:

  • MINTRA/mintra level — The flight level below which exhaust trails will positively not form. They may or may not form above the MINTRA level. This flight level is obtained from a tephigram drawn by the meteorologist. DRYTRA is the level above which exhaust trails will… …   Aviation dictionary

  • tephigram — An aerological map on which temperatures and potential temperatures (pot temp) are marked along the X and Y axes, respectively. Tephigrams are used to ascertain the stability of the atmosphere. Information about the MINTRA level i.e., the minimum …   Aviation dictionary


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