AFFILIATIONS: INGLEBY--ECMWF, Reading, United Kingdom, and Met Office, Exeter, United Kingdom; PAULEY--Naval Research Laboratory, Monterey, California; KATS--Central
Aerological Observatory of Roshydromet, Dolgoprudny, Russia; Ator and Keyser--NOAA, College Park, Maryland; DOERENBECHER--MeteoFrance, Toulouse, France; FUCILE--ECMWF, Reading, United KINGDOM; HASEGAWA AND TOYODA--Japan Meteorological Agency, Tokyo, Japan; KLEINERT--Deutscher Wetterdienst, Offenbach, GERMANY; QU--Bureau of Meteorology, Melbourne, Victoria, Australia; ST.