Abstract The FORMOSAT-7/COSMIC-2 Global Navigation Satellite System (GNSS) Radio
Occultation (RO) satellite constellation was launched in June 2019 as a successor of the …

Observations that are assimilated into numerical weather prediction systems are conformed
by numerous data sets and their impact should be objectively evaluated. This can be …

Evaluating impacts of observations on the skill of numerical weather prediction (NWP) is
important. The Ensemble Forecast Sensitivity to Observation (EFSO) provides an efficient …

Over the past 15 years, adjoint‐based, ensemble‐based and hybrid methods have been
developed for estimating observation impact based on the forecast sensitivity to observation …

This work assesses the contribution of assimilating AMSU-A satellite-based radiance
measurements to a global data assimilation system based on an atmospheric general …

An ensemble-based forecast sensitivity to observations (EFSO) diagnosis has been
implemented in an atmospheric general circulation model–ensemble Kalman filter data …

Proactive quality control (PQC) is a fully flow-dependent QC for observations based on the
ensemble forecast sensitivity to observations technique (EFSO). It aims at reducing the …

Introduction Assimilating all available observations in numerical models may lead to
deterioration of the analysis. Ensemble Forecast Sensitivity to Observations (EFSO) is a …

To improve the forecast accuracy of numerical weather prediction, it is essential to obtain
better initial conditions by combining simulations and available observations via data …

Proactive quality control (PQC) is a fully flow dependent QC based on ensemble forecast
sensitivity to observations (EFSO). Past studies showed in several independent cases that …