ECMWF STAGE
NL

New observations since July 2019

The following new observations have been activated in the operational ECMWF assimilation system since July 2019.

Observations

Main impact

Activation date

Bending angles from KOMPSAT-5’s radio occultation instrument

Temperature in upper troposphere/
lower stratosphere

24 July 2019

High-resolution dropsondes

More observations near tropical cyclones, with dropsonde drift accounted for

4 September 2019

Radiances from IASI on Metop-C

Temperature, humidity, ozone, dynamics

25 September 2019