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ACE Program

ACE (Atmospheric Climate Experiment) was an ESA Earth Explorer Opportunity concept studied from 1999 at Phase-A level and retained as a hot-spare atmospheric sounding mission. It would exploit refraction of GNSS navigation-satellite signals to provide globally distributed temperature and humidity observations in the upper atmosphere, improving long-term climate monitoring and atmospheric-model knowledge through radio occultation. ESA material documents ACE as a research concept rather than an implemented programme.

Identity

Aliases
ACEAtmospheric Climate ExperimentEarth Explorer ACEACE mission
Domains
spaceflight
Name
ACE Program
Status
planned
Types
researchscience

Details

Description
ACE (Atmospheric Climate Experiment) was an ESA Earth Explorer Opportunity concept studied from 1999 at Phase-A level and retained as a hot-spare atmospheric sounding mission. It would exploit refraction of GNSS navigation-satellite signals to provide globally distributed temperature and humidity observations in the upper atmosphere, improving long-term climate monitoring and atmospheric-model knowledge through radio occultation. ESA material documents ACE as a research concept rather than an implemented programme.
Leads
Parent Program
Participants
-
Start Date
1999

Assets & Meta

Creation Time
August 13, 2026 at 17:24:26 UTC
Updated Time
August 13, 2026 at 17:24:26 UTC

Other

ACE Program - AeroVia