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Pregled bibliografske jedinice broj: 447351

The ECMWF implementation of three dimensional variational assimilation (3D-Var). Part III : Experimental results

Andersson, E.; Haseler, J.; Unden, P.; Courtier, Ph.; Kelly, G.; Vasiljević, Draško; Branković, Čedo; Cardinali, C.; Gaffard, C.; Hollingsworth, A. et al.
The ECMWF implementation of three dimensional variational assimilation (3D-Var). Part III : Experimental results // Quarterly Journal of the Royal Meteorological Society, 124 (1998), 550 Part B; 1831-1860 doi:10.1002/qj.49712455004 (međunarodna recenzija, članak, znanstveni)

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Naslov
The ECMWF implementation of three dimensional variational assimilation (3D-Var). Part III : Experimental results

Autori
Andersson, E. ; Haseler, J. ; Unden, P. ; Courtier, Ph. ; Kelly, G. ; Vasiljević, Draško ; Branković, Čedo ; Cardinali, C. ; Gaffard, C. ; Hollingsworth, A. ; Jakob, C. ; Janssen, P. ; Klinker, E. ; Lanzinger, A. ; Miller, M. ; Rabier, F. ; Simmons, A. ; Strauss, B. ; Thepaut, J.-N. ; Viterbo, P.

Izvornik
Quarterly Journal of the Royal Meteorological Society (0035-9009) 124 (1998), 550 Part B; 1831-1860

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

Ključne riječi
Data assimilation; Numerical weather prediction; Objective analysis

Sažetak
In this third and final paper of a series, we assess the performance of the three-dimensional variational data assimilation scheme, in the light of the results from the extensive pre-operational programme of numerical experimentation. Its performance is compared with that of the previous operational scheme at the European Centre for Medium-Range Weather Forecasts, which was based on Optimal Interpolation. The main features of the new scheme are illustrated, in particular the effects of non-separable structure functions and the improved data usage. TIROS-N Operational Vertical Sounder cloud-cleared radiances, for example, are used directly without a separate retrieval step. Scatterometer data are assimilated in the form of ambiguous winds with the ambiguity removal taking place within the analysis itself. Problems encountered during the tests are discussed and the solutions implemented are explained. The overall impact on forecast accuracy in the troposphere of the northern hemisphere extratropics is neutral for geopotential and positive for wind and temperature. The impact is neutral in the tropics, and significantly positive in the southern hemisphere. Analyses and forecasts for the stratosphere have improved in all regions. Other positive results include a clear improvement in analyses of near-surface winds over oceans, particularly in the vicinity of tropical storms. This is predominantly because of the assimilation of scatterometer wind-data.

Izvorni jezik
Engleski

Znanstvena područja
Geologija



POVEZANOST RADA

Profili:

Avatar Url Čedomir Branković (autor)

Poveznice na cjeloviti tekst rada:

Pristup cjelovitom tekstu rada doi www3.interscience.wiley.com www3.interscience.wiley.com

Citiraj ovu publikaciju:

Andersson, E.; Haseler, J.; Unden, P.; Courtier, Ph.; Kelly, G.; Vasiljević, Draško; Branković, Čedo; Cardinali, C.; Gaffard, C.; Hollingsworth, A. et al.
The ECMWF implementation of three dimensional variational assimilation (3D-Var). Part III : Experimental results // Quarterly Journal of the Royal Meteorological Society, 124 (1998), 550 Part B; 1831-1860 doi:10.1002/qj.49712455004 (međunarodna recenzija, članak, znanstveni)
Andersson, E., Haseler, J., Unden, P., Courtier, P., Kelly, G., Vasiljević, D., Branković, Č., Cardinali, C., Gaffard, C. & Hollingsworth, A. (1998) The ECMWF implementation of three dimensional variational assimilation (3D-Var). Part III : Experimental results. Quarterly Journal of the Royal Meteorological Society, 124 (550 Part B), 1831-1860 doi:10.1002/qj.49712455004.
@article{article, author = {Andersson, E. and Haseler, J. and Unden, P. and Courtier, Ph. and Kelly, G. and Vasiljevi\'{c}, Dra\v{s}ko and Brankovi\'{c}, \v{C}edo and Cardinali, C. and Gaffard, C. and Hollingsworth, A. and Jakob, C. and Janssen, P. and Klinker, E. and Lanzinger, A. and Miller, M. and Rabier, F. and Simmons, A. and Strauss, B. and Thepaut, J.-N. and Viterbo, P.}, year = {1998}, pages = {1831-1860}, DOI = {10.1002/qj.49712455004}, keywords = {Data assimilation, Numerical weather prediction, Objective analysis}, journal = {Quarterly Journal of the Royal Meteorological Society}, doi = {10.1002/qj.49712455004}, volume = {124}, number = {550 Part B}, issn = {0035-9009}, title = {The ECMWF implementation of three dimensional variational assimilation (3D-Var). Part III : Experimental results}, keyword = {Data assimilation, Numerical weather prediction, Objective analysis} }
@article{article, author = {Andersson, E. and Haseler, J. and Unden, P. and Courtier, Ph. and Kelly, G. and Vasiljevi\'{c}, Dra\v{s}ko and Brankovi\'{c}, \v{C}edo and Cardinali, C. and Gaffard, C. and Hollingsworth, A. and Jakob, C. and Janssen, P. and Klinker, E. and Lanzinger, A. and Miller, M. and Rabier, F. and Simmons, A. and Strauss, B. and Thepaut, J.-N. and Viterbo, P.}, year = {1998}, pages = {1831-1860}, DOI = {10.1002/qj.49712455004}, keywords = {Data assimilation, Numerical weather prediction, Objective analysis}, journal = {Quarterly Journal of the Royal Meteorological Society}, doi = {10.1002/qj.49712455004}, volume = {124}, number = {550 Part B}, issn = {0035-9009}, title = {The ECMWF implementation of three dimensional variational assimilation (3D-Var). Part III : Experimental results}, keyword = {Data assimilation, Numerical weather prediction, Objective analysis} }

Časopis indeksira:


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

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