Matches in SemOpenAlex for { <https://semopenalex.org/work/W4297824756> ?p ?o ?g. }
Showing items 1 to 65 of
65
with 100 items per page.
- W4297824756 abstract "<strong class=journal-contentHeaderColor>Abstract.</strong> A particle filter (PF) is an ensemble data assimilation method that does not assume Gaussian error distributions. Recent studies proposed local PFs (LPFs), which use localization, as in the ensemble Kalman filter, to apply the PF efficiently for high-dimensional dynamics. Among others, Penny and Miyoshi (2016) developed an LPF in the form of the ensemble transform matrix of the local ensemble transform Kalman filter (LETKF). The LETKF has been widely accepted for various geophysical systems, including numerical weather prediction (NWP) models. Therefore, implementing the LPF consistently with an existing LETKF code is useful. This study develops a software platform for the LPF and its Gaussian mixture extension (LPFGM) by making slight modifications to the LETKF code with a simplified global climate model known as Simplified Parameterizations, Primitive Equation Dynamics (SPEEDY). A series of idealized twin experiments were accomplished under the ideal-model assumption. With large inflation by the relaxation to prior spread, the LPF showed stable filter performance with dense observations but became unstable with sparse observations. The LPFGM showed a more accurate and stable performance than the LPF with both dense and sparse observations. In addition to the relaxation parameter, regulating the resampling frequency and the amplitude of Gaussian kernels was important for the LPFGM. With a spatially inhomogeneous observing network, the LPFGM was superior to the LETKF in sparsely observed regions, where the background ensemble spread and non-Gaussianity were larger. The SPEEDY-based LETKF, LPF, and LPFGM systems are available as open-source software on GitHub (<span class=uri>https://github.com/skotsuki/speedy-lpf</span>, last access: 16 November 2022) and can be adapted to various models relatively easily, as in the case of the LETKF." @default.
- W4297824756 created "2022-10-01" @default.
- W4297824756 creator A5033345410 @default.
- W4297824756 date "2022-09-07" @default.
- W4297824756 modified "2023-10-18" @default.
- W4297824756 title "Reply on RC1" @default.
- W4297824756 doi "https://doi.org/10.5194/gmd-2022-69-ac1" @default.
- W4297824756 hasPublicationYear "2022" @default.
- W4297824756 type Work @default.
- W4297824756 citedByCount "0" @default.
- W4297824756 crossrefType "peer-review" @default.
- W4297824756 hasAuthorship W4297824756A5033345410 @default.
- W4297824756 hasBestOaLocation W42978247561 @default.
- W4297824756 hasConcept C11413529 @default.
- W4297824756 hasConcept C121332964 @default.
- W4297824756 hasConcept C150921843 @default.
- W4297824756 hasConcept C153294291 @default.
- W4297824756 hasConcept C154945302 @default.
- W4297824756 hasConcept C157286648 @default.
- W4297824756 hasConcept C163716315 @default.
- W4297824756 hasConcept C177264268 @default.
- W4297824756 hasConcept C199360897 @default.
- W4297824756 hasConcept C205649164 @default.
- W4297824756 hasConcept C206833254 @default.
- W4297824756 hasConcept C24552861 @default.
- W4297824756 hasConcept C2776760102 @default.
- W4297824756 hasConcept C28826006 @default.
- W4297824756 hasConcept C33923547 @default.
- W4297824756 hasConcept C41008148 @default.
- W4297824756 hasConcept C62520636 @default.
- W4297824756 hasConcept C79334102 @default.
- W4297824756 hasConceptScore W4297824756C11413529 @default.
- W4297824756 hasConceptScore W4297824756C121332964 @default.
- W4297824756 hasConceptScore W4297824756C150921843 @default.
- W4297824756 hasConceptScore W4297824756C153294291 @default.
- W4297824756 hasConceptScore W4297824756C154945302 @default.
- W4297824756 hasConceptScore W4297824756C157286648 @default.
- W4297824756 hasConceptScore W4297824756C163716315 @default.
- W4297824756 hasConceptScore W4297824756C177264268 @default.
- W4297824756 hasConceptScore W4297824756C199360897 @default.
- W4297824756 hasConceptScore W4297824756C205649164 @default.
- W4297824756 hasConceptScore W4297824756C206833254 @default.
- W4297824756 hasConceptScore W4297824756C24552861 @default.
- W4297824756 hasConceptScore W4297824756C2776760102 @default.
- W4297824756 hasConceptScore W4297824756C28826006 @default.
- W4297824756 hasConceptScore W4297824756C33923547 @default.
- W4297824756 hasConceptScore W4297824756C41008148 @default.
- W4297824756 hasConceptScore W4297824756C62520636 @default.
- W4297824756 hasConceptScore W4297824756C79334102 @default.
- W4297824756 hasLocation W42978247561 @default.
- W4297824756 hasOpenAccess W4297824756 @default.
- W4297824756 hasPrimaryLocation W42978247561 @default.
- W4297824756 hasRelatedWork W2035262598 @default.
- W4297824756 hasRelatedWork W2039176626 @default.
- W4297824756 hasRelatedWork W2104350810 @default.
- W4297824756 hasRelatedWork W2389657240 @default.
- W4297824756 hasRelatedWork W2393565244 @default.
- W4297824756 hasRelatedWork W2467481536 @default.
- W4297824756 hasRelatedWork W3111936024 @default.
- W4297824756 hasRelatedWork W4220960262 @default.
- W4297824756 hasRelatedWork W2513427764 @default.
- W4297824756 hasRelatedWork W2525014937 @default.
- W4297824756 isParatext "false" @default.
- W4297824756 isRetracted "false" @default.
- W4297824756 workType "peer-review" @default.