HR: 1340h
AN: OS13A-0999 [Abstracts]
TI: Volumes of the World's Oceans From ETOPO2v2
AU: * Eakins, B W
EM: barry.eakins@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences (CIRES), University of
Colorado at Boulder, 216 UCB, Boulder, CO 80309-0216, United States
AU: Sharman, G F
EM: George.F.Sharman@noaa.gov
AF: NOAA National Geophysical Data Center, 325 Broadway, E/GC3, Boulder, CO 80305,
United States
AB:
We have calculated the volumes of the world's oceans from the 2 arc-minute ETOPO2v2 global relief model
assembled by the National Geophysical Data Center. Total: 1,332 x 10\textsuperscript{6} km\textsuperscript{3}.
Pacific Ocean: 659 x 10\textsuperscript{6} km\textsuperscript{3}. Atlantic Ocean: 306 x 10\textsuperscript{6}
km\textsuperscript{3}. Arctic Ocean: 18.7 x 10\textsuperscript{6} km\textsuperscript{3}. Indian Ocean: 263 x
10\textsuperscript{6} km\textsuperscript{3}. Southern Ocean: 71.0 x 10\textsuperscript{6} km\textsuperscript{3}.
Mediterranean region: 4.41 x 10\textsuperscript{6} km\textsuperscript{3}. South China and Eastern Archipelagic
seas: 9.78 x 10\textsuperscript{6} km\textsuperscript{3}. Baltic Sea: 21.2 x 10\textsuperscript{3}
km\textsuperscript{3}.
Ocean limits were derived from IHO Special Publication No. 23 and represented in ArcGIS polygon format. Ocean
volumes were determined by clipping the ETOPO2v2 digital elevation model to the appropriate polygon (to prevent
inclusion of dry elevations below sea level), calculating the area of each grid cell (using the WGS84 spheroid),
and summing the volumes (area x depth) of grid cells below sea level. This methodology can be extended to any
ocean basin or other region where a digital elevation model has been generated. We anticipate that our refined
ocean volume calculations will prove useful to physical oceanographic studies, climate modeling, and other
research that uses ocean volumes as a prerequisite input.
DE: 4223 Descriptive and regional oceanography
DE: 4255 Numerical modeling (0545, 0560)
DE: 4294 Instruments and techniques
DE: 9399 General or miscellaneous
SC: Ocean Sciences [OS]
MN: 2007 Fall Meeting