[1
]Deutscher WetterdienstHohenpeißenbergGermany
[2
]Environment and Climate Change CanadaTorontoCanada
[3
]Alfred Wegener InstitutHelmholtz‐Zentrum für Polar‐ und MeeresforschungPotsdamGermany
[4
]Danish Meteorological InstituteCopenhagenDenmark
[5
]Finnish Meteorological InstituteSodankyläFinland
[6
]British Meteorological ServiceLerwickUnited Kingdom
[7
]University of BremenBremenGermany
[8
]Institute of Meteorology and Water ManagementLegionowoPoland
[9
]Deutscher WetterdienstLindenbergGermany
[10
]Royal Netherlands Meteorological InstituteDeBiltThe Netherlands
[11
]Met Éireann (Irish Met. Service)ValentiaIreland
[12
]Royal Meteorological Institute of BelgiumUccleBelgium
[13
]Karlsruhe Institute of TechnologyIMK‐IFUGarmisch‐PartenkirchenGermany
[14
]Institute of Astrophysics and GeophysicsUniversity of LiègeLiègeBelgium
[15
]Federal Office of Meteorology and ClimatologyMeteoSwissPayerneSwitzerland
[16
]LATMOSSorbonne Université‐UVSQ‐CNRS/INSUParisFrance
[17
]University of TorontoTorontoCanada
[18
]NOAA ESRL Global Monitoring LaboratoryBoulderCOUSA
[19
]Cooperative Institute for Research in Environmental Sciences (CIRES)University of
ColoradoBoulderCOUSA
[20
]National Center for Atmospheric ResearchBoulderCOUSA
[21
]State Meteorological Agency (AEMET)MadridSpain
[22
]Meteorological Research InstituteTsukubaJapan
[23
]Jet Propulsion LaboratoryCalifornia Institute of TechnologyTable Mountain FacilityWrightwoodCAUSA
[24
]Izaña Atmospheric Research CenterAEMETTenerifeSpain
[25
]Karlsruhe Institute of TechnologyIMK‐ASFKarlsruheGermany
[26
]Bureau of MeteorologyMelbourneAustralia
[27
]Centre for Atmospheric ChemistryUniversity of WollongongWollongongAustralia
[28
]National Institute of Water and Atmospheric ResearchLauderNew Zealand
[29
]Earth Sciences DivisionNASA Goddard Space Flight CenterGreenbeltMDUSA
[30
]Universities Space Research AssociationColumbiaMDUSA
[31
]Earth System Science Interdisciplinary CenterUniversity of MarylandCollege ParkMDUSA
[32
]European Centre for Medium‐Range Weather ForecastsReadingUnited Kingdom
[33
]NOAA Chemical Sciences LaboratoryBoulderCOUSA