ECMWF Newsletter #182

New observations October – December 2024

 

The following new observations have been activated in the operational ECMWF assimilation systems during October – December 2024.

Observations Main impact Activation date
SNOTEL snow data Snow analysis, surface parameters 8 October 2024
SYNOP/METAR temperature 2 m temperatures in atmospheric 4D-Var (previously used in the land surface analysis only) 12 November 2024
Ground-based GNSS stations zenith total delay Integrated water vapour 12 November 2024
NOAA-21 VIIRS AMVs Tropospheric wind at high latitudes 10 December 2024
PlanetIQ radio occultation bending angles Temperature and winds in upper troposphere/lower stratosphere 11 December 2024
Scatterometer winds from HY-2C Near-surface winds over the ocean 11 December 2024