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