European SpaceCraft for the study of Atmospheric Particle Escape (ESCAPE): a planetary mission to Earth, proposed to ESA inresponse to the M5-call

0489534 - ÚFA 2019 DE eng A - Abstrakt
Dandouras, I. - Yamauchi, M. - Rème, H. - De Keyser, J. - Marghitu, O. - Fazakerley, A. - Grison, Benjamin - Kistler, L. - Milillo, A. - Nakamura, R. - Paschalidis, N. - Paschalis, A. - Pinçon, J.-L. - Sakanoi, T. - Wieser, M. - Wurz, P. - Yoshikawa, I. - Häggström, I. - Liemohn, M. - Tian, F.
European SpaceCraft for the study of Atmospheric Particle Escape (ESCAPE): a planetary mission to Earth, proposed to ESA inresponse to the M5-call.
Geophysical Research Abstracts. Vol. 20. Göttingen: European Geosciences Union, 2018. EGU2018-4367-1, s. 2042. E-ISSN 1607-7962.
[EGU General Assembly 2018. 08.04.2018-13.04.2018, Vienna]
Institucionální podpora: RVO:68378289
Klíčová slova: planetary mission * cpacecraft * atmospheric particle escape (ESCAPE)
Obor OECD: Astronomy (including astrophysics,space science)
https://meetingorganizer.copernicus.org/EGU2018/EGU2018-2042.pdf

ESCAPE is a mission proposed to ESA in response to the M5 call that will quantitatively estimate the amount of escaping particles of the major atmospheric components (nitrogen and oxygen), as neutral and ionised species, escaping from the Earth as a magnetised planet. The spatial distribution and temporal variability of the flux of these species and their isotopic composition will be for the first time systematically investigated in an extended altitude range, from the exobase/upper ionosphere (500 km altitude) up to the magnetosphere.
The goal is to understand the importance of each escape mechanism (thermal or non-thermal), its dependence on solar and geomagnetic activity, in order to infer the history of the Earth’s atmosphere over a long (geological scale) time period. Since the solar EUV and solar wind conditions during solar maximum at present are comparable to the solar minimum conditions 1–2 billion years ago, the escaping amount and the isotope and N/O ratiosshould be obtained asa function of external forcing (solarand geomagnetic conditions) to allow a scalingoftheescaperatestothepast.Theresultswillbeusedasareferencetounderstandtheatmospheric/ionospheric evolution of magnetised planets or exoplanets, which is essential for habitability.
To achieve this goal, a slowly spinning spacecraft is proposed equipped with a suite of instruments developed and supplied by an international consortium. These instruments will detect the upper atmosphere and magnetosphere escaping populations by a combination of in-situ measurements and of remote-sensing observations.

The ESCAPE mission proposal successfully passed the first technical and programmatic screening by ESA and is now in the scientific assessment phase.

Trvalý link: http://hdl.handle.net/11104/0283931