1. Laboratoire des Sciences du Climat et de l’Environnement, CEA Saclay l’Orme des Merisiers, UMR 8212 CEA-CNRS-UVSQ, Université Paris-Saclay and IPSL, 91191 Gif-sur-Yvette, France
2. London Mathematical Laboratory, 8 Margravine Gardens, London W6 8RH, United Kingdom
3. LMD/IPSL, Ecole Normale Superieure, PSL Research University, 75005 Paris, France
4. Department of Quantum Physics and Photonics, Institute of Physics, UNAM, P.O. Box 20-364, 01000 Mexico City, Mexico
5. Danish Research Centre for Magnetic Resonance, Centre for Functional and Diagnostic Imaging and Research, Copenhagen University Hospital Hvidovre, Kettegard Allé 30, 2650 Hvidovre, Denmark
6. LMD/IPSL, ENS, PSL Université, École Polytechnique, Institut Polytechnique de Paris, Sorbonne Université, CNRS, 75005 Paris, France
7. Ecole des Ponts, 77455 Marne-la-Vallé, France
8. Department of Mathematics, Imperial College London, SW7 R2H London, United Kingdom
9. RIES/Department of Mathematics, Hokkaido University, N20 W10, Kita-ku, Sapporo, Hokkaido 001-0020, Japan
10. Centre for the Analysis of Time Series, London School of Economics and Political Science, Houghton Street, London WC2A 2AE, United Kingdom