14–16 Jun 2021
Europe/Brussels timezone

Retrieval of tropospheric specific humidity profiles with high vertical resolution from Radio Occultations

15 Jun 2021, 15:30
15m

Speaker

Dr Johannes K. Nielsen (Danish Meteorological Institute)

Description

Satellite based Radio Occutations (GNSS-RO) are used to produce water vapour climate data records, with high vertical resolution. In the tropopshere the RO measurement, in combination with background model data, can be inverted to a water vapour product. The RO technique is calibration free, thus to some extend free from instability issues, but the inclusion of model background data may cause changes in biases over time.

In this presentation we will introduce the RO technique and the algorithms used to invert RO signals. We will focus on what is being done in the EUMETSAT ROM SAF to get optimal humidity information from RO measurements, and briefly discuss future plans for improving stability of RO humidity products.

Primary authors

Dr Johannes K. Nielsen (Danish Meteorological Institute) Hans Gleisner (Danish Meteorological Institute) Kent Lauritsen (Danish Meteorological Institute) Dr Stig Syndergaard (Danish Meteorological Institute)

Presentation materials