Announcement of Opportunity
for the
Cluster Guest Investigator and Early Career Scientist


The outcome of this Announcement of Opportunity was that the following scientists (listed in alphabetical order) were appointed as Cluster Early Career Scientists:
Patrik Krcelic, Max Planck Institute for Solar System Research, Göttingen, Germany
Pavel Shustov, Space Research Institute of the Russian Academy of Sciences, Moscow, Russia
Sergio Toledo-Redondo, IRAP, France


25 February 2019

This Announcement of Opportunity (AO) solicits proposals for participation in the Cluster Guest Investigator (GI) and Early Career Scientist (ECS) programme.

Proposals for this programme must identify compelling scientific studies that make use of the Cluster spacecraft and payload in 2020. Proposals to exploit Cluster data with other satellite data, or proposals for theoretical and/or modelling studies focused on the goals and objectives of the Cluster mission, are encouraged.

This AO is open to the worldwide scientific community. Co-investigators of experiments on the Cluster mission are eligible to propose under this AO; Principal Investigators are excluded.


Applications for this programme

Proposals for participation as a Cluster Guest Investigator or Early Career Scientist  must be preceded by a mandatory Letter of Intent. Proposals not preceded by a Letter of Intent will not be considered. The Letters of Intent and proposals must be submitted using the online forms – see links to the forms below or in the left-hand menu.

Note that for the purpose of this AO, an Early Career Scientist is considered to be an undergraduate or postgraduate (Masters/PhD) student or a scientist who has received their highest degree (BSc, MSc, or PhD) within the past seven years.

Up to ten Guest Investigators and ten Early Career Scientists will be selected through this AO.

Full details of this AO can be found in the documentation in the Proposal Information Package, which is available to download from the right-hand menu.


Submission forms

Letters of Intent Submission Form      
Deadline: 28 March 2019, 12:00 (noon) CET


Proposals Submission Form
Deadline: 29 May 2019, 12:00 (noon) CEST



The documentation for this Announcement of Opportunity is provided as a Proposal Information Package, consisting of the Letter of Invitation from the Director of Science, the Announcement of Opportunity document (SCI-S-2019-001-CPE), user guides and calibration reports for each of the 11 Cluster instruments, the JSOC system specification (DS-JSO-SS-0001), and  a document describing the latest Cluster instrument status. These are available to download as a zip file from the right-hand menu.


Schedule for this AO and important dates

Activity Date
Announcement of Opportunity issued 25 February 2019
Deadline for Letter of Intent 28 March 2019, 12:00 (noon) CET
Deadline for Proposal submission 29 May 2019, 12:00 (noon) CEST
Evaluation phase June-September 2019
Selection October-November 2019
Execution of GI operations 2020



Queries should be addressed to:

C.P. Escoubet
Cluster Project Scientist
Directorate of Science
European Space Agency

A. Masson
Cluster Deputy Project Scientist
Directorate of Science
European Space Agency

L. Colangeli
Head of the Science Coordination Office
Directorate of Science
European Space Agency


Last updated: 19 February 2019


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