FN Archimer Export Format PT J TI Observing system evaluations using GODAE systems BT AF OKE, Peter R. BALMASEDA, Magdalena A. BENKIRAN, Mounir CUMMINGS, James A. DOMBROWSKY, Eric FUJII, Yosuke GUINEHUT, Stéphanie LARNICOL, Gilles LE TRAON, Pierre-Yves MARTIN, Matthew J. AS 1:1;2:2;3:3;4:4;5:5;6:6;7:;8:;9:7;10:8; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:PDG-DPCP-LOS;10:; C1 CSIRO, Hobart, Tas, Australia. European Ctr Medium Range Weather Forecasts, Reading RG2 9AX, Berks, England. Ocean Data Assimilat, CLS Space Oceanog Div, Ramonville St Agne, France. USN, Res Lab, Monterey, CA USA. Mercator Ocean, Ramonville St Agne, France. Japan Meteorol Agcy, Oceanog Res Dept, Meteorol Res Inst, Tsukuba, Ibaraki, Japan. IFREMER, Ctr Brest, F-29280 Plouzane, France. Met Off, Exeter, Devon, England. C2 CSIRO, AUSTRALIA ECMWF, UK CLS, FRANCE USN, USA MERCATOR OCEAN, FRANCE JAPAN METEOROL AGCY, JAPAN IFREMER, FRANCE MET OFF, UK SI BREST SE PDG-DPCP-LOS IN WOS Ifremer jusqu'en 2018 copubli-france copubli-europe copubli-int-hors-europe IF 2.113 TC 34 UR https://archimer.ifremer.fr/doc/2009/publication-6813.pdf LA English DT Article AB Global ocean forecast systems, developed under the Global Ocean Data Assimilation Experiment (GODAE), are a powerful means of assessing the impact of different components of the Global Ocean Observing System (GOOS). Using a range of analysis tools and approaches, GODAE systems are useful for quantifying the impact of different observation types on the quality of analyses and forecasts. This assessment includes both existing and future observation platforms. Many important conclusions can be drawn from these studies. It is clear that altimeter data are extremely important for constraining mesoscale variability in ocean forecast systems. The number of altimeters is also important. For example, near-real-time applications need data from four altimeters to achieve skill that is similar to systems using data from two altimeters in delayed mode. Another important result is that sea surface temperature is the only observation parameter that adequately monitors ocean properties in coastal regions and shallow seas. Assimilation of Argo data provides a significant, measurable improvement to GODAE systems, and is the only observation platform that provides global-scale information for constraining salinity. The complementary nature of different components of GOOS is now clear and the emergence of new assimilation techniques for observing system evaluation provides the GODAE community with a practical path toward routine GOOS monitoring. PY 2009 PD SEP SO Oceanography SN 1042-8275 PU The Oceanography Society VL 22 IS 3 UT 000269506500016 BP 144 EP 153 ID 6813 ER EF