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. Some of the Aircraft Meteorological Data Relay (AMDAR)data include a turbulence metric of the derived equivalent vertical gust(DEVG), in addition to wind and temperature. As the cube root of the eddydissipation rate (EDR) is the International Civil Aviation Organizationstandard turbulence reporting metric, we attempt to retrieve the EDR fromthe DEVG for more reliable and consistent observations of aviationturbulence globally. Using the DEVG in the AMDAR data archived fromOctober 2015 to September 2018 covering a large portion of the Southern Hemisphereand North Pacific and North Atlantic oceans, we convert the DEVG to the EDRusing two methods, after conducting quality control procedures to removesuspicious turbulence reports in the DEVG. The first method remaps the DEVGto the EDR using a lognormal mapping scheme, while the second one uses thebest-fit curve between the EDR and DEVG developed in a previous study. TheDEVG-derived EDRs obtained from the two methods are evaluated against insitu EDR data reported by US-operated carriers. For two specifiedregions of the Pacific Ocean and Europe, where both the DEVG-derivedEDRs and in situ EDRs were available, the DEVG-derived EDRs obtained by thetwo methods were generally consistent with in situ EDRs, with slightly betterstatistics obtained by the first method than the second one. This result isencouraging for extending the aviation turbulence data globally with thesingle preferred EDR metric, which will contribute to the improvement ofglobal aviation turbulence forecasting as well as to the construction of theclimatology of upper-level turbulence.

Retrieval of eddy dissipation rate from derived equivalent vertical gust included in Aircraft Meteorological Data Relay (AMDAR)