Local ensemble transform Kalman filter for ionospheric data assimilation: Observation influence analysis during a geomagnetic storm event
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geophysical Research"
DOI: 10.1002/2017ja024274
Abstract: We propose a targeted observation strategy, based on the influence matrix diagnostic, that optimally selects where additional observations may be placed to improve ionospheric forecasts. This strategy is applied in data assimilation observing system experiments,… read more here.
Keywords: observation; local ensemble; data assimilation; vertical profiles ... See more keywords
Weight structure of the Local Ensemble Transform Kalman Filter: A case with an intermediate atmospheric general circulation model
Sign Up to like & getrecommendations! Published in 2020 at "Quarterly Journal of the Royal Meteorological Society"
DOI: 10.1002/qj.3852
Abstract: The Local Ensemble Transform Kalman Filter (LETKF) computes analysis by using a weighted average of the first‐guess ensemble with surrounding observations within a localization cut‐off radius. Since overlapped observations are assimilated at neighbouring grid points,… read more here.
Keywords: ensemble transform; localization; local ensemble; weight ... See more keywords
Hourly Aerosol Assimilation of Himawari‐8 AOT Using the Four‐Dimensional Local Ensemble Transform Kalman Filter
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Advances in Modeling Earth Systems"
DOI: 10.1029/2018ms001475
Abstract: The next‐generation geostationary satellite Himawari‐8 has a much higher observation frequency of the aerosol field than polar‐orbiting satellites. Aerosol analyses with a geostationary satellite can advance our understanding of the rapid spatiotemporal evolution of aerosols,… read more here.
Keywords: assimilation; local ensemble; hourly aerosol; model ... See more keywords
Efficient Image Reconstruction Algorithm for ECT System Using Local Ensemble Transform Kalman Filter
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Access"
DOI: 10.1109/access.2021.3051560
Abstract: One of the vital processes that should be monitored and analyzed continuously in the oil-gas and petroleum-related industries is the multi-phase flow inside pipes. Multi-phase flow means flowing two or more phases of gas, liquid,… read more here.
Keywords: system; image reconstruction; local ensemble; ect system ... See more keywords
Local Ensemble Transform Kalman Filter with Cross Validation
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Weather Review"
DOI: 10.1175/mwr-d-19-0402.1
Abstract: AbstractMany ensemble data assimilation (DA) approaches suffer from the so-called “inbreeding” problem. As a consequence, there is an excessive reduction in ensemble spread by the DA procedure, cau... read more here.
Keywords: local ensemble; transform kalman; cross validation; kalman filter ... See more keywords