Matches in SemOpenAlex for { <https://semopenalex.org/work/W2085438009> ?p ?o ?g. }
Showing items 1 to 96 of
96
with 100 items per page.
- W2085438009 endingPage "3437" @default.
- W2085438009 startingPage "3427" @default.
- W2085438009 abstract "Abstract In data assimilation for numerical weather prediction, measurements of various observation systems are combined with background data to define initial states for the forecasts. Current and future observation systems, in particular satellite instruments, produce large numbers of measurements with high spatial and temporal density. Such datasets significantly increase the computational costs of the assimilation and, moreover, can violate the assumption of spatially independent observation errors. To ameliorate these problems, we propose two greedy thinning algorithms, which reduce the number of assimilated observations while retaining the essential information content of the data. In the first method, the number of points in the output set is increased iteratively. We use a clustering method with a distance metric that combines spatial distance with difference in observation values. In a second scheme, we iteratively estimate the redundancy of the current observation set and remove the most redundant data points. We evaluate the proposed methods with respect to a geometric error measure and compare them with a uniform sampling scheme. We obtain good representations of the original data with thinnings retaining only a small portion of observations. We also evaluate our thinnings of ATOVS satellite data using the assimilation system of the Deutscher Wetterdienst. Impact of the thinning on the analysed fields and on the subsequent forecasts is discussed. Copyright © 2005 Royal Meteorological Society" @default.
- W2085438009 created "2016-06-24" @default.
- W2085438009 creator A5005105851 @default.
- W2085438009 creator A5008646925 @default.
- W2085438009 creator A5008717316 @default.
- W2085438009 creator A5041902557 @default.
- W2085438009 date "2005-10-01" @default.
- W2085438009 modified "2023-10-18" @default.
- W2085438009 title "Adaptive thinning of atmospheric observations in data assimilation with vector quantization and filtering methods" @default.
- W2085438009 cites W1634005169 @default.
- W2085438009 cites W2134006029 @default.
- W2085438009 cites W2150593711 @default.
- W2085438009 cites W2174848899 @default.
- W2085438009 cites W4241282862 @default.
- W2085438009 doi "https://doi.org/10.1256/qj.05.94" @default.
- W2085438009 hasPublicationYear "2005" @default.
- W2085438009 type Work @default.
- W2085438009 sameAs 2085438009 @default.
- W2085438009 citedByCount "38" @default.
- W2085438009 countsByYear W20854380092012 @default.
- W2085438009 countsByYear W20854380092013 @default.
- W2085438009 countsByYear W20854380092015 @default.
- W2085438009 countsByYear W20854380092016 @default.
- W2085438009 countsByYear W20854380092017 @default.
- W2085438009 countsByYear W20854380092018 @default.
- W2085438009 countsByYear W20854380092019 @default.
- W2085438009 countsByYear W20854380092020 @default.
- W2085438009 countsByYear W20854380092021 @default.
- W2085438009 countsByYear W20854380092022 @default.
- W2085438009 countsByYear W20854380092023 @default.
- W2085438009 crossrefType "journal-article" @default.
- W2085438009 hasAuthorship W2085438009A5005105851 @default.
- W2085438009 hasAuthorship W2085438009A5008646925 @default.
- W2085438009 hasAuthorship W2085438009A5008717316 @default.
- W2085438009 hasAuthorship W2085438009A5041902557 @default.
- W2085438009 hasBestOaLocation W20854380092 @default.
- W2085438009 hasConcept C111919701 @default.
- W2085438009 hasConcept C11413529 @default.
- W2085438009 hasConcept C121332964 @default.
- W2085438009 hasConcept C124101348 @default.
- W2085438009 hasConcept C127313418 @default.
- W2085438009 hasConcept C147947694 @default.
- W2085438009 hasConcept C152124472 @default.
- W2085438009 hasConcept C153294291 @default.
- W2085438009 hasConcept C154945302 @default.
- W2085438009 hasConcept C18903297 @default.
- W2085438009 hasConcept C199833920 @default.
- W2085438009 hasConcept C24552861 @default.
- W2085438009 hasConcept C2781353100 @default.
- W2085438009 hasConcept C33923547 @default.
- W2085438009 hasConcept C41008148 @default.
- W2085438009 hasConcept C58489278 @default.
- W2085438009 hasConcept C62649853 @default.
- W2085438009 hasConcept C73555534 @default.
- W2085438009 hasConcept C86803240 @default.
- W2085438009 hasConceptScore W2085438009C111919701 @default.
- W2085438009 hasConceptScore W2085438009C11413529 @default.
- W2085438009 hasConceptScore W2085438009C121332964 @default.
- W2085438009 hasConceptScore W2085438009C124101348 @default.
- W2085438009 hasConceptScore W2085438009C127313418 @default.
- W2085438009 hasConceptScore W2085438009C147947694 @default.
- W2085438009 hasConceptScore W2085438009C152124472 @default.
- W2085438009 hasConceptScore W2085438009C153294291 @default.
- W2085438009 hasConceptScore W2085438009C154945302 @default.
- W2085438009 hasConceptScore W2085438009C18903297 @default.
- W2085438009 hasConceptScore W2085438009C199833920 @default.
- W2085438009 hasConceptScore W2085438009C24552861 @default.
- W2085438009 hasConceptScore W2085438009C2781353100 @default.
- W2085438009 hasConceptScore W2085438009C33923547 @default.
- W2085438009 hasConceptScore W2085438009C41008148 @default.
- W2085438009 hasConceptScore W2085438009C58489278 @default.
- W2085438009 hasConceptScore W2085438009C62649853 @default.
- W2085438009 hasConceptScore W2085438009C73555534 @default.
- W2085438009 hasConceptScore W2085438009C86803240 @default.
- W2085438009 hasIssue "613" @default.
- W2085438009 hasLocation W20854380091 @default.
- W2085438009 hasLocation W20854380092 @default.
- W2085438009 hasOpenAccess W2085438009 @default.
- W2085438009 hasPrimaryLocation W20854380091 @default.
- W2085438009 hasRelatedWork W1980785126 @default.
- W2085438009 hasRelatedWork W2070671604 @default.
- W2085438009 hasRelatedWork W2184710923 @default.
- W2085438009 hasRelatedWork W2355132867 @default.
- W2085438009 hasRelatedWork W2548035599 @default.
- W2085438009 hasRelatedWork W2886196490 @default.
- W2085438009 hasRelatedWork W3211629817 @default.
- W2085438009 hasRelatedWork W3214500423 @default.
- W2085438009 hasRelatedWork W4236373379 @default.
- W2085438009 hasRelatedWork W788509307 @default.
- W2085438009 hasVolume "131" @default.
- W2085438009 isParatext "false" @default.
- W2085438009 isRetracted "false" @default.
- W2085438009 magId "2085438009" @default.
- W2085438009 workType "article" @default.