Marine Ecosystems Research Department - jamstec japan agency ...

JAMSTEC 2002 Annual Report
Frontier Research System for Global Change
Table 3 Archived data sets
Ocean In Situ Obs. Data
WOCE CTD, bottle & current meter, UOT;
ARGO pacific & Indian ocean;
Ocean GPV
Levitus climatology, COADS climatology,
Oceanic Reanalysis
Simple Ocean Data Assimilation (SODA), ECCO Kalman filter, ECCO adjoint
Atmospheric GPV
CMAP precipitation,
Atmospheric Reanalysis Data
ECMWF Reanalysis (ERA-17,40), ECMWF operational (ds111.1, ds111.2, ds.111.3),
NCEP Reanalysis 1 & 2
Satellite Data
QuikSCAT Level 3, Atlas SSMI, TMI precipitation radar, GSSTF Turbulent fluxes,
GOES precipitation index, WOCE satellite winds (ERS1,2, NSCAT, QuikSCAT,
SeaWinds on QuikSCAT), GHRSST, J-OFURO flux data
Land Data
Vegetation data (NCAR vegetation, NOAA Ecosystem database (vegetation, FAO Ecocrop)
Soil data (FAO Soil Map & Soil Properties)
Precipitation data(GPCP)
Snow-ice data (NSIDC)
Others (GLCC global land cover characteristics database, ISLSCP)
Fig.34 Sensitivity to a salinity fluctuation input on the density surface of NPIW
(information of specified fluctuations is calculated backward in time).
good agreement with recent observational findings.
We further estimated the seasonally-varying state of
heat balance in the upper equatorial Pacific for the first
time (Figure ), and found that the result has an
important implication for the so called phase-locked
process of the El Niño onset in the western equatorial
Pacific (presence of upward net heat flux between
˚E and ˚E in winter and spring), but clarification
of the detailed mechanism is left for future work.
Figure shows the result of the sensitivity of the
atmospheric adjoint model to a velocity fluctuation
input in the upper equatorial troposphere (exactly, at
˚), where information of specified fluctuations is
calculated backward in time. It is visible that the signal
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