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Pregled bibliografske jedinice broj: 642280

4D-Var Data Assimilation in a Nested, Coastal Ocean Model: A Hawaiian Case Study


Janeković, Ivica; Powell, B.S.; Matthews, D.; McManus, M.A.; Sevadjian, J.
4D-Var Data Assimilation in a Nested, Coastal Ocean Model: A Hawaiian Case Study // Journal of geophysical research, 118 (2013), 10; 5022-5035 doi:10.1002/jgrc.20389 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 642280 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
4D-Var Data Assimilation in a Nested, Coastal Ocean Model: A Hawaiian Case Study

Autori
Janeković, Ivica ; Powell, B.S. ; Matthews, D. ; McManus, M.A. ; Sevadjian, J.

Izvornik
Journal of geophysical research (0148-0227) 118 (2013), 10; 5022-5035

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
4D-Var Data Assimilation ; Nested Models ; Controlling Dynamics ; ROMS model ; Hawaii

Sažetak
State estimation techniques have been well established in open ocean systems ; however they are less often used in coastal applications due to non-linearity. Using 4D-variational data assimilation in a triple one-way nested system, we investigate the processes that control coastal dynamics for a test case along the western coast of Oahu, Hawaii. All available observations are combined with the model dynamics for 13 months. Over this time, the residual error between the model and observations was improved by nearly 30% in the surface temperature and 34% in the along- shore ADCP currents. The barotropic and baroclinic tides are found dominate the local circulation ; however, island and atmospheric interaction generates an island wake effect that is important to the sub-tidal dynamics of the region. The baroclinic tides exhibit well defined energy paths, and the initial condition corrections, despite altering the density waveguide, have little influence on the propagation of the baroclinic energy, which is controlled by the propagation of baroclinic tides generated outside of the domain. We find the larger-scale, advected dynamics control the local surface circulation through boundary condition adjustment, accounting for 45% of the total corrections made via data assimilation system. The initial conditions controls little of the evolution of this local, coastal flow and has a short persistence. The wind-stress control vector is important in the central region of the domain inducing flow toward the lee of the island. Our results reveal that coastal studies may not be initial value problems, rather they are forced problems that require a knowledge of the large- scale energy propagated into the region.

Izvorni jezik
Engleski

Znanstvena područja
Geologija



POVEZANOST RADA


Projekti:
098-0982705-2707 - Matematičko modeliranje cirkulacije i satelitska detekcija graničnih procesa (Kuzmić, Milivoj, MZOS ) ( POIROT)

Ustanove:
Institut "Ruđer Bošković", Zagreb

Profili:

Avatar Url Ivica Janeković (autor)

Poveznice na cjeloviti tekst rada:

doi agupubs.onlinelibrary.wiley.com

Citiraj ovu publikaciju:

Janeković, Ivica; Powell, B.S.; Matthews, D.; McManus, M.A.; Sevadjian, J.
4D-Var Data Assimilation in a Nested, Coastal Ocean Model: A Hawaiian Case Study // Journal of geophysical research, 118 (2013), 10; 5022-5035 doi:10.1002/jgrc.20389 (međunarodna recenzija, članak, znanstveni)
Janeković, I., Powell, B., Matthews, D., McManus, M. & Sevadjian, J. (2013) 4D-Var Data Assimilation in a Nested, Coastal Ocean Model: A Hawaiian Case Study. Journal of geophysical research, 118 (10), 5022-5035 doi:10.1002/jgrc.20389.
@article{article, author = {Janekovi\'{c}, Ivica and Powell, B.S. and Matthews, D. and McManus, M.A. and Sevadjian, J.}, year = {2013}, pages = {5022-5035}, DOI = {10.1002/jgrc.20389}, keywords = {4D-Var Data Assimilation, Nested Models, Controlling Dynamics, ROMS model, Hawaii}, journal = {Journal of geophysical research}, doi = {10.1002/jgrc.20389}, volume = {118}, number = {10}, issn = {0148-0227}, title = {4D-Var Data Assimilation in a Nested, Coastal Ocean Model: A Hawaiian Case Study}, keyword = {4D-Var Data Assimilation, Nested Models, Controlling Dynamics, ROMS model, Hawaii} }
@article{article, author = {Janekovi\'{c}, Ivica and Powell, B.S. and Matthews, D. and McManus, M.A. and Sevadjian, J.}, year = {2013}, pages = {5022-5035}, DOI = {10.1002/jgrc.20389}, keywords = {4D-Var Data Assimilation, Nested Models, Controlling Dynamics, ROMS model, Hawaii}, journal = {Journal of geophysical research}, doi = {10.1002/jgrc.20389}, volume = {118}, number = {10}, issn = {0148-0227}, title = {4D-Var Data Assimilation in a Nested, Coastal Ocean Model: A Hawaiian Case Study}, keyword = {4D-Var Data Assimilation, Nested Models, Controlling Dynamics, ROMS model, Hawaii} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Citati:





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