Oct 27 – 31, 2025
Europe/Stockholm timezone

International Meridian Circle Project – Europe-Africa-Pacifique sector

Not scheduled
20m
Poster OPS - Open parallel session (OPS) Open parallel session

Speaker

Frédéric Pitout (Midi-Pyrénées Observatory)

Description

Solar activity, space weather, extreme meteorological events, global warming, earthquakes, geomagnetic field secular variations all leave their imprint on the lower ionosphere and thermosphere (LIT), this complex interface where neutral atmosphere and space environment interact.

The objective of the original "International Meridian Circle Program (IMCP)", a proposal for an international collaboration program initially formulated by the Chinese Academy of Sciences, was to use the LIT as a screen on which to detect and separate these specific imprints, including their variations in magnetic and geographic latitude, local time and longitude; in the IMCP concept (Liu et al., 2021), this objective can be achieved by networking solar and upper atmosphere observation instruments along two meridian circles in longitude quadrature: an Asia-Americas meridian circle (120°E-60°W), and a Europe-Africa-Pacific one (30°E-150°W).

Following the initial Chinese concept, we have decided to take over the project of an instrumented great circle along a longitude sector going through Europe, Africa and the Pacific Ocean. In this presentation, we shall present and discuss:
1) the science base of this project and its specific strengths and weaknesses;
2) ways for the European and African communities to contribute together to this project via networking of instruments along the 30°E-150°W meridian circle;
3) the cooperative research tools needed to stimulate joint analysis of IMCP data.

Do you plan to attend in-person or online? In-person

Primary author

Frédéric Pitout (Midi-Pyrénées Observatory)

Co-authors

Presentation materials

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