Impact of future and current altimetry and in situ networks on the oceanic analysis and forecasts

Abstract : Two series of Observing System Simulation Experiments (OSSEs) are carried out with global data assimilation systems at 1/4° and 1/12° resolution using simulated altimetry (satellite) and in situ (Argo float) data derived from a 1/12° resolution free run simulation. The objectives are to quantify how well different data sets can constrain a global data assimilation system. The positive impact of multiple altimeter data is clearly evidenced on sea level and ocean currents. The addition of Argo has a major impact to improve temperature and demonstrates the essential role of Argo together with altimetry to constrain a global data assimilation system. Results derived from these OSSEs are consistent with those derived from experiments with real data (observing system evaluations/OSEs) but they allow a more detailed characterization of errors on analyses and forecasts.
Document type :
Theses
Liste complète des métadonnées

https://tel.archives-ouvertes.fr/tel-01902791
Contributor : Abes Star <>
Submitted on : Tuesday, October 23, 2018 - 6:20:08 PM
Last modification on : Wednesday, October 24, 2018 - 1:13:32 AM
Document(s) archivé(s) le : Thursday, January 24, 2019 - 6:19:43 PM

File

2017TOU30096b.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-01902791, version 1

Collections

STAR | METEO | IRD

Citation

Simon Verrier. Impact of future and current altimetry and in situ networks on the oceanic analysis and forecasts. Ocean, Atmosphere. Université Paul Sabatier - Toulouse III, 2017. English. ⟨NNT : 2017TOU30096⟩. ⟨tel-01902791⟩

Share

Metrics

Record views

143

Files downloads

27