*Yosuke Fujii¹, Magdalena Balmaseda², Elisabeth Remy³, Hao Zuo², Jieshun Zhu⁴, Ichiro Ishikawa¹ (1. Meteorological Research Institute, Japan Meteorolgical Agency, 2. European Centre for Medium-Range Weather Forecasts, 3. Mercator Ocean International, 4. Climate Prediction Center, National Oceanic and Atmospheric Administration)

*Alison Cobb¹, Hans Hersbach¹, Phil Browne¹, Margarita Choulga¹, Hao Zuo¹, Tim Stockdale¹ (1. ECMWF)

*Yoshinori Shoji¹, Kenichi Kuma², Kazutoshi Ohnogi² (1. Meteorological Research Institute, 2. Research Center for Advanced Science and Technology, The University of Tokyo)

*Katsufumi Sato¹, Shinichi Watanabe², Takuji Noda³, Takuya Koizumi³, Takashi Iwata⁴, Erina Nabei⁴, Akira Kuwano-Yoshida⁵ (1. Atomosphere and Ocean Research Institute, University of Tokyo, 2. Little Leonardo Corp., 3. Biologging Solutions Inc., 4. Graduate School of Maritime Sciences, Kobe University, 5. Disaster Prevention Research Institute, Kyoto University)

*Jörg Schulz¹, Timo Hanschmann¹, Roger Huckle¹, Paul Poli², Viju John¹, Marie Doutriaux-Boucher¹ (1. EUMETSAT , 2. ECMWF)

Viju Oommen John¹, *Jörg Schulz¹, Kenneth Knapp², Jessica Matthews², Andrew Heidinger², Masaya Takahashi³ (1. EUMETSAT, 2. NOAA, 3. JMA)

*Peter Thorne¹, Gerard van der Schrier², Marlies van der Schee², Kevin Healion¹, Simon Noone¹, Matthew Menne³, Robert Dunn⁷, Axel Andersson⁴, Alastair McKinstry⁵, Corinne Voces¹, Paul Poli⁶ (1. Maynooth University, 2. KNMI, 3. NOAA NCEI, 4. DWD, 5. National University of Ireland Galway, 6. ECMWF, 7. Met Office)