Progress, challenges, and future steps in data assimilation for convection‐permitting numerical weather prediction: Report on the virtual meeting held on 10 and 12 …
Abstract In November 2021, the Royal Meteorological Society Data Assimilation (DA)
Special Interest Group and the University of Reading hosted a virtual meeting on the topic of …
Special Interest Group and the University of Reading hosted a virtual meeting on the topic of …
Sampling and misspecification errors in the estimation of observation‐error covariance matrices using observation‐minus‐background and observation‐minus …
Abstract Specification of the observation‐error covariance matrix for data assimilation
systems affects the observation information content retained by the analysis, particularly for …
systems affects the observation information content retained by the analysis, particularly for …
Impact of correlated observation errors on the conditioning of variational data assimilation problems
O Goux, S Gürol, AT Weaver… - … Linear Algebra with …, 2024 - Wiley Online Library
An important class of nonlinear weighted least‐squares problems arises from the
assimilation of observations in atmospheric and ocean models. In variational data …
assimilation of observations in atmospheric and ocean models. In variational data …
Improving the condition number of estimated covariance matrices
High dimensional error covariance matrices and their inverses are used to weight the
contribution of observation and background information in data assimilation procedures. As …
contribution of observation and background information in data assimilation procedures. As …
A practical assimilation approach to extract smaller‐scale information from observations with spatially correlated errors: An idealized study
J Bédard, M Buehner - Quarterly Journal of the Royal …, 2020 - Wiley Online Library
It is still common to neglect the spatial error correlations of assimilated observations in
numerical weather prediction systems because no practical approach is available to account …
numerical weather prediction systems because no practical approach is available to account …
Modelling spatially correlated observation errors in variational data assimilation using a diffusion operator on an unstructured mesh
O Guillet, AT Weaver, X Vasseur… - Quarterly Journal of …, 2019 - Wiley Online Library
We propose a method for representing spatially correlated observation errors in variational
data assimilation. The method is based on the numerical solution of a diffusion equation, a …
data assimilation. The method is based on the numerical solution of a diffusion equation, a …
Assimilation of Meteosat Third Generation (MTG) Lightning Imager (LI) pseudo-observations in AROME-France–proof of concept
F Erdmann, O Caumont, E Defer - Natural Hazards and Earth …, 2023 - nhess.copernicus.org
This study develops a lightning data assimilation (LDA) scheme for the regional, convection-
permitting numerical weather prediction (NWP) model AROME-France. The LDA scheme …
permitting numerical weather prediction (NWP) model AROME-France. The LDA scheme …
Efficient computation of matrix–vector products with full observation weighting matrices in data assimilation
Recent studies have demonstrated improved skill in numerical weather prediction via the
use of spatially correlated observation error covariance information in data assimilation …
use of spatially correlated observation error covariance information in data assimilation …
The impact of using reconditioned correlated observation‐error covariance matrices in the Met Office 1D‐Var system
Recent developments in numerical weather prediction have led to the use of correlated
observation‐error covariance (OEC) information in data assimilation and forecasting …
observation‐error covariance (OEC) information in data assimilation and forecasting …
All-Sky Assimilation of GOES-16 Water Vapor Channels in Consideration of Cloud-Dependent Interchannel Observation-Error Correlations
Abstract The Advanced Baseline Imager (ABI) on the Geostationary Operational
Environmental Satellite-16 (GOES-16) includes three water vapor channels (8, 9, and 10) …
Environmental Satellite-16 (GOES-16) includes three water vapor channels (8, 9, and 10) …