Matches in SemOpenAlex for { <https://semopenalex.org/work/W2954881198> ?p ?o ?g. }
Showing items 1 to 100 of
100
with 100 items per page.
- W2954881198 endingPage "1242" @default.
- W2954881198 startingPage "1225" @default.
- W2954881198 abstract "The CHAMP and GOCE satellites provided high-resolution thermosphere data between 2000 and 2013, improving our knowledge of atmosphere dynamics in the thermosphere-ionosphere region. However, the currently available data sets contain inconsistencies with each other and with external data sets and models, arising to a large extent from errors in the modelling of aerodynamic forces. Improved processing of the wind data for the two satellites would benefit the further development and validation of thermosphere models and improve current understanding of atmospheric dynamics and long-term trends. The first step to remove inconsistencies has been the development of high-fidelity models of the satellite surface geometry. Next, an improved characterization of the collisions between atmospheric particles and satellite surfaces is necessary. In this article, the effect of varying the energy accommodation coefficient, which is a key parameter for describing gas-surface interactions (GSI) is investigated. For past versions of the thermosphere density and wind data from these satellites a value of the energy accommodation coefficient of αE=0.93 was selected. The satellite accelerometer measurements, from which the thermospheric data are derived, have now been reprocessed using high-fidelity geometries and a wide range of αE values. Lowering the αE value used in the processing leads to an increase in the lift over drag ratio for those satellite panels that are inclined to the flow. This changes the direction of the modelled acceleration, and therefore the interpretation of the measured acceleration in terms of wind. The wrong choice of αE therefore leads to the introduction of satellite attitude-dependent wind errors. For the CHAMP and GOCE satellites, we have found that values of the energy accommodation coefficient significantly lower than 0.93 (0.85 for CHAMP and 0.82 for GOCE) result in increased consistency of the wind data. A comparison between the two missions and an overview of the influence on the results of filtering for solar activity and seasonal and diurnal variations is presented." @default.
- W2954881198 created "2019-07-12" @default.
- W2954881198 creator A5016214900 @default.
- W2954881198 creator A5035527477 @default.
- W2954881198 creator A5040641481 @default.
- W2954881198 creator A5077891526 @default.
- W2954881198 date "2019-09-01" @default.
- W2954881198 modified "2023-10-15" @default.
- W2954881198 title "CHAMP and GOCE thermospheric wind characterization with improved gas-surface interactions modelling" @default.
- W2954881198 cites W110991276 @default.
- W2954881198 cites W1492365792 @default.
- W2954881198 cites W1835636375 @default.
- W2954881198 cites W1970894935 @default.
- W2954881198 cites W1973112285 @default.
- W2954881198 cites W2001742797 @default.
- W2954881198 cites W2015518210 @default.
- W2954881198 cites W2018558915 @default.
- W2954881198 cites W2019969350 @default.
- W2954881198 cites W2025879027 @default.
- W2954881198 cites W2033742976 @default.
- W2954881198 cites W2051487538 @default.
- W2954881198 cites W2067315867 @default.
- W2954881198 cites W2078314268 @default.
- W2954881198 cites W2088230219 @default.
- W2954881198 cites W2091964580 @default.
- W2954881198 cites W2100280334 @default.
- W2954881198 cites W2116222886 @default.
- W2954881198 cites W2119068106 @default.
- W2954881198 cites W2124715982 @default.
- W2954881198 cites W2125401419 @default.
- W2954881198 cites W2138572931 @default.
- W2954881198 cites W2329533067 @default.
- W2954881198 cites W2460419806 @default.
- W2954881198 cites W2588086185 @default.
- W2954881198 cites W2602413220 @default.
- W2954881198 cites W2775500547 @default.
- W2954881198 cites W2884133956 @default.
- W2954881198 cites W2897063825 @default.
- W2954881198 cites W2913949745 @default.
- W2954881198 doi "https://doi.org/10.1016/j.asr.2019.06.023" @default.
- W2954881198 hasPublicationYear "2019" @default.
- W2954881198 type Work @default.
- W2954881198 sameAs 2954881198 @default.
- W2954881198 citedByCount "26" @default.
- W2954881198 countsByYear W29548811982019 @default.
- W2954881198 countsByYear W29548811982020 @default.
- W2954881198 countsByYear W29548811982021 @default.
- W2954881198 countsByYear W29548811982022 @default.
- W2954881198 countsByYear W29548811982023 @default.
- W2954881198 crossrefType "journal-article" @default.
- W2954881198 hasAuthorship W2954881198A5016214900 @default.
- W2954881198 hasAuthorship W2954881198A5035527477 @default.
- W2954881198 hasAuthorship W2954881198A5040641481 @default.
- W2954881198 hasAuthorship W2954881198A5077891526 @default.
- W2954881198 hasConcept C116403925 @default.
- W2954881198 hasConcept C117896860 @default.
- W2954881198 hasConcept C121332964 @default.
- W2954881198 hasConcept C127313418 @default.
- W2954881198 hasConcept C1276947 @default.
- W2954881198 hasConcept C131980223 @default.
- W2954881198 hasConcept C153294291 @default.
- W2954881198 hasConcept C19269812 @default.
- W2954881198 hasConcept C39432304 @default.
- W2954881198 hasConcept C62649853 @default.
- W2954881198 hasConcept C74650414 @default.
- W2954881198 hasConcept C8058405 @default.
- W2954881198 hasConceptScore W2954881198C116403925 @default.
- W2954881198 hasConceptScore W2954881198C117896860 @default.
- W2954881198 hasConceptScore W2954881198C121332964 @default.
- W2954881198 hasConceptScore W2954881198C127313418 @default.
- W2954881198 hasConceptScore W2954881198C1276947 @default.
- W2954881198 hasConceptScore W2954881198C131980223 @default.
- W2954881198 hasConceptScore W2954881198C153294291 @default.
- W2954881198 hasConceptScore W2954881198C19269812 @default.
- W2954881198 hasConceptScore W2954881198C39432304 @default.
- W2954881198 hasConceptScore W2954881198C62649853 @default.
- W2954881198 hasConceptScore W2954881198C74650414 @default.
- W2954881198 hasConceptScore W2954881198C8058405 @default.
- W2954881198 hasFunder F4320321800 @default.
- W2954881198 hasIssue "6" @default.
- W2954881198 hasLocation W29548811981 @default.
- W2954881198 hasOpenAccess W2954881198 @default.
- W2954881198 hasPrimaryLocation W29548811981 @default.
- W2954881198 hasRelatedWork W1985215167 @default.
- W2954881198 hasRelatedWork W2029114750 @default.
- W2954881198 hasRelatedWork W2031570768 @default.
- W2954881198 hasRelatedWork W2051672287 @default.
- W2954881198 hasRelatedWork W2070385319 @default.
- W2954881198 hasRelatedWork W2072916676 @default.
- W2954881198 hasRelatedWork W2079324238 @default.
- W2954881198 hasRelatedWork W2748952813 @default.
- W2954881198 hasRelatedWork W2949816948 @default.
- W2954881198 hasRelatedWork W3005278924 @default.
- W2954881198 hasVolume "64" @default.
- W2954881198 isParatext "false" @default.
- W2954881198 isRetracted "false" @default.
- W2954881198 magId "2954881198" @default.
- W2954881198 workType "article" @default.