US Globec and PFEL Research Data Access |
Data base system for rapid and customized access
to the World Ocean Data Base.
Biases are introduced into time series extracted from summarized versions
of environmental data sets, due to factors such as changes in
instrumentation or measurement technique, increasing amounts of buoy data,
and changes in observation platforms. Rapid access to the raw observations
is needed to test for and control these biases when developing
environmental time series, and for evaluating data summaries and
reanalyses. We have reformatted the WODB for easy access and developed a
data base extraction program. The data base allows users on their own
computers to subsample the WODB and other data sets, and produce summaries
for customized geographic regions in a number of formats that can be read
directly into visualization and statistical analysis software packages. It
is similar to the system developed at PFEL for extracting and summarizing
COADS [Mendelssohn and Roy 1996].
Access to World Ocean Data Base climatologies via Live Access Server.
The common formats allow gridded data sets to be downloaded and visualized
via the PFEL Live Access Server (LAS),
developed at NOAA PMEL. Data can be
downloaded in many formats and visualized in a variety of space-time
cross-sections. The LAS is being widely used by researchers at other
institutions for direct analyses of ocean variability and for model
Cooperation with the NEP community.
The WODB extraction code and its products are available to colleagues
within the NEP program and the oceanographic community. We have worked with
the PIs of other NEP GLOBEC projects to: (a) identify what data sets they
need; (b) minimize the effort of creating commonly used fields; (c)
encourage collaboration among investigators by providing convenient means
for sharing data, and (d) provide individual investigators with the time
series or data sets they require.
Data set development of surface and subsurface quantities.
Summaries of observed data have been prepared for direct analyses of ocean
variability and as model validation fields. Global 1° x 1° monthly mean surface
wind stress and SST fields (from the COADS and NCEP) and subsurface ocean
temperature and salinity fields at standard depths (from the WODB) have
been computed. Monthly climatologies and decadal averages for 1966-75 and
1977-86 have been developed for several fields (e.g., wind stress,
temperature, salinity), and animated for further analysis. Monthly
climatologies and monthly fields can be viewed on the