Components NOAA/NESDIS/NGDC/Collection/iso/xml/global.xml

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Metadata Identifier: gov.noaa.ngdc:global

MD_DataIdentification

Count	Component	Title	Abstract
1		Global Digital Elevation Models (DEM) - ETOPO1 Global Relief Model	In August 2008, the National Geophysical Data Center (NGDC), an office of the National Oceanic and Atmospheric Administration (NOAA), developed the ETOPO1 Global Relief Model as an improvement to the ETOPO2v2 Global Relief Model. ETOPO1 is available in "Ice Surface" (top of Antarctic and Greenland ice sheets) and "Bedrock" (base of the ice sheets) versions. Both versions of ETOPO1 were generated from diverse global and regional digital data sets, which were shifted to common horizontal and vertical datums, and then evaluated and edited as needed. Bathymetric, topographic, and shoreline data used in ETOPO1 were obtained from NGDC, Antarctic Digital Database (ADD), European Ice Sheet Modeling Initiative (EISMINT), Scientific Committee on Antarctic Research (SCAR), Japan Oceanographic Data Center (JODC), Caspian Environment Programme (CEP), Mediterranean Science Commission (CIESM), National Aeronautics and Space Administration (NASA), National Snow and Ice Data Center (NSIDC), Scripps Institute of Oceanography (SIO), and Leibniz Institute for Baltic Sea Research (LIBSR). ETOPO1 is vertically referenced to sea level, and horizontally referenced to the World Geodetic System of 1984 (WGS 84). Cell size for ETOPO1 is 1 arc-minute.

SV_Identification

Count	Component	Title	Type
1	Color Shaded Relief ArcGIS Map Service	Digital Elevation Models: Color Shaded Relief ArcGIS Map Service	ArcGIS Map Service

Unresolved Xlinks
Footprints ArcGIS Map Service at: /gmi:MI_Metadata/gmd:identificationInfo[2]

CI_Citation

Count	Component	Title	Date
1		A high resolution spherical grid topography of the Baltic Sea 2nd edition	2001-01-01
1		ADD Antarctica Coastline	2006-01-01
1		CEP Isolines of the Bathymetry of the Caspian Sea	1999-01-01
1		CIESM Morpho-bathymetry of the Mediterranean Sea	2005-01-01
1		Digital Elevation Models: Color Shaded Relief ArcGIS Map Service	2011-10-19
1		EISMINT and SCAR Antarctica BEDMAP	2000-01-01
1		ETOPO1 Global Relief Model	2009-01-01
1		Geospatial Platform
1		Global Digital Elevation Models (DEM) - ETOPO1 Global Relief Model	2009-01-01
1		Global Land One-km Base Elevation (GLOBE)	1999-01-01
1		INFOTERRA Keyword Thesaurus
1		International Bathymetry Chart of the Arctic Ocean (IBCAO)	2008-01-01
1		JODC Bathymetry	1999-01-01
1		Mean Sea Level depth	2012-08-10
1		Measured and Estimated Seafloor Topography	2008-01-01
1		NASA/GCMD Data Center Keywords
1		NASA/GCMD Earth Science Keywords
1		NASA/GCMD Location Keywords
1	NASA/Global Change Master Directory (GCMD) Earth Science Services Keywords	NASA/GCMD Services Keywords
1		NGDC Global Self-consistent, Hierarchical, High-resolution Shoreline Database (GSHHS)	2003-01-01
1		NGDC Gulf of California Bathymetry	2006-01-01
1		NGDC U.S Coastal Relief Model	2005-01-01
1		NGDC U.S Great Lakes Bathymetry	2005-01-01
1		NSIDC Antarctica Radarsat Antarctic Mapping Project (RAMP) Topography	2001-01-01
1		NSIDC Greenland Bedrock	2001-01-01
1		Shuttle Radar Topography Mission (SRTM)	2008-01-01
1		Uncontrolled
1		World Geodetic System 1984	2007-08-27

CI_Series

none found

CI_ResponsibleParty

Count	Component	Individual	Organization	Position	Email	Role	Linkage
2						resourceProvider	http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4326
18				Citation URL			http://www.ngdc.noaa.gov/mgg/global/global.html
1	GCMD Valids					custodian	http://gcmd.nasa.gov/learn/keyword_list.html
1			Antarctica Digital Database (ADD)			originator
1			Barry W. Eakins			originator
2	Barry Eakins	Barry W. Eakins	DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce	Research Scientist	Barry.Eakins@noaa.gov	pointOfContact
1			Caspian Environment Programme (CEP)			originator
1			Christopher J. Amante			originator
5			DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NEDIS, NOAA, U.S. Department of Commerce			originator
4			DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, Department of Commerce			publisher	http://ngdc.noaa.gov/mgg/coastal/coastal.html
2	DEM Info		DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce	DEM Information	dem.info@noaa.gov	pointOfContact
2			DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce			publisher
1			DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce			originator
1			European Ice Sheet Modeling Initiative (EISMINT) and Scientific Committee on Antarctic Research (SCAR)			originator
2	EPSG Registry		European Petroleum Survey Group			publisher	http://www.epsg-registry.org/
1			International Bathymetric Chart of the Arctic Ocean (IBCAO) version 2.0			originator
1			Japan Oceanographic Data Center (JODC)			originator
1	Varner, Jesse	Jesse Varner	DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce		Jesse.Varner@noaa.gov	pointOfContact
1	Kelly Carignan	Kelly Carignan	DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce		kelly.carignan@noaa.gov	pointOfContact
1			Leibniz Institute for Baltic Sea Research (LIBSR)			originator
1			Mediterranean Science Commission (CIESM)			originator
1	GCMD User Support Office		NASA	GCMD User Support Office	gcmduso@gcmd.gsfc.nasa.gov	custodian	http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso
1			NASA > National Aeronautics and Space Administration (NASA)			originator
2			National Snow and Ice Data Center (NSIDC)			originator
1			Scripps Institute of Oceanography (SIO)			originator

CI_OnlineResource

Count	Component	Linkage	Name	Description	Function
1		http://caspian.iwlearn.org/	Isolines of the Bathymetry of the Caspian Sea	Isolines of the bathymetry is used for showing the depths of the Caspian Sea	download
1		http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso	GCMD Feedback Form	Have a Comment for the GCMD?	information
1	GCMD Keyword Page	http://gcmd.nasa.gov/learn/keyword_list.html	GCMD Keywords Page	This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions.	information
1		http://maps.ngdc.noaa.gov/arcgis/rest/services/web_mercator/dem_extents/MapServer	DEM Footprints ArcGIS Map Service	A map service showing the location and coverage of land and seafloor digital elevation models (DEMs) available from NOAA's National Geophysical Data Center.	search
1		http://maps.ngdc.noaa.gov/arcgis/rest/services/web_mercator/dem_hillshades_mosaic/MapServer	Digital Elevation Models: Color Shaded Relief ArcGIS Cached Map Service	REST endpoint for Digital Elevation Models: Color Shaded Relief ArcGIS cached map service	search
1		http://maps.ngdc.noaa.gov/soap/web_mercator/dem_hillshades_mosaic/MapServer/WMSServer?request=GetCapabilities%26service=WMS	Digital Elevation Models: Color Shaded Relief Web Map Service (WMS)	Capabilities document for Open Geospatial Consortium Web Map Service for Digital Elevation Models: Color Shaded Relief	search
1		http://ngdc.noaa.gov/mgg/coastal/coastal.html	Integrated Models of Coastal Relief at NGDC	Please see NGDC's website for more information about Coastal DEMs at NGDC.	information
1		http://nsidc.org/data/nsidc-0082.html	RAMP DEM Version 2	400 m grid of Antarctica ice surface	download
1		http://nsidc.org/data/nsidc-0092.html	Greenland 5 km DEM, Ice Thickness, and Bedrock Elevation Grids	5 km elevation grid of Greenland bedrock	download
1		http://srtm.usgs.gov/	Shuttle Radar Topography Mission	global topography	download
1		http://topex.ucsd.edu/marine_topo/	Measured and Estimated Seafloor Topography	Grid derived from known soundings and sea-surface altimetry measurements	download
1		http://www.add.scar.org/	Antarctica Coastline	Antarctica coastline data	download
1		http://www.antarctica.ac.uk//bas_research/data/access/bedmap/	A new ice thickness and subglacial topographic model of the Antarctic	Antarctica bedrock elevation grid	download
1		http://www.arcgis.com/home/item.html?id=7f11b445da1a45ccb76b403018302d25	ArcGIS Online Entry	ArcGIS Online listing for Digital Elevation Models: Color Shaded Relief ArcGIS Map Service.	information
1		http://www.ciesm.org/	Morpho-bathymetry of the Mediterranean Sea	Grid derived from multibeam swath sonar bathymetric surveys	download
2		http://www.epsg-registry.org/	European Petroleum Survey Group Geodetic Parameter Registry	Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations.	search
1		http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4326	WGS 84	GML of World Geodetic System 1984 coordinate reference system.	information
1		http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::5715	MSL depth	GML for Vertical CRS in EPGS Registry.	information
1		http://www.geoplatform.noaa.gov/home/item.html?id=0e85102781904d46b7c0ac541cb86267	NOAA Geoplatform Entry	NOAA Geoplatform listing for Digital Elevation Models: Color Shaded Relief ArcGIS Map Service	information
1		http://www.io-warnemuende.de/topography-of-the-baltic-sea.html	A high resolution spherical grid topography of the Baltic Sea 2nd edition	High resolution spherical grid topography of the Baltic Sea	download
1		http://www.jodc.go.jp/data_set/jodc/jegg_intro.html	J-EGG500(JODC-Expert Grid data for Geographic -500m)	500 meter gridded bathymetry data set	download
1		http://www.ngdc.noaa.gov/mgg/bathymetry/arctic/arctic.html	IBCAO	Digital data base that contains all available bathymetric data north of 64 degrees North	download
1		http://www.ngdc.noaa.gov/mgg/bathymetry/multibeam.html	NGDC Multibeam Bathymetry Database	Multibeam swath sonar survey data	download
1		http://www.ngdc.noaa.gov/mgg/coastal/crm.html	U.S Coastal Relief Model	Integrated coastal bathymetric and topographic relief model	download
3		http://www.ngdc.noaa.gov/mgg/global/global.html	ETOPO1 Global Relief Model	web access to ETOPO1 Global Relief Model	information
1		http://www.ngdc.noaa.gov/mgg/global/relief/ETOPO1/docs/ETOPO1.pdf	ETOPO1 1 Arc-Minute Global Relief Model: Procedures, Data Sources and Analysis	Report describing the development of the ETOPO1 Global Relief Model	download
1		http://www.ngdc.noaa.gov/mgg/greatlakes/greatlakes.html	U.S Great Lakes Bathymetry	Grid of U.S Great Lakes bathymetry	download
1		http://www.ngdc.noaa.gov/mgg/shorelines/gshhs.html	GSHHS - A Global Self-consistent, Hierarchical, High-resolution Shoreline Database	global shoreline data	download
1		http://www.ngdc.noaa.gov/mgg/topo/globe.html	Global Land One-km Base Elevation (GLOBE)	A 30-arc-second (1-km) gridded, quality-controlled global Digital Elevation Model (DEM)	download

MD_Identifier or RS_Identifier

Count	Component	Code
1		urn:ogc:def:crs:EPSG::4326
1		urn:ogc:def:crs:EPSG::5715

EX_Extent

			Bounding Box				Temporal Extent
Count	Component	Description	West	East	North	South	Start	End
1			-180.00	180.00	90.00	-90.00	1940-01-01	2008-01-01
1			-180	180	90	-90
1							1996-01-01	2003-01-01
1							1993-01-01	2006-01-01
1
1
1							1987-01-01	1999-01-01
1
1							1997-01-01	2008-01-01
1
1							1999-01-01	2008-01-01
1							1999-01-01	2005-01-01
1							1996-01-01	2005-01-01
1
1							1940-01-01	1999-01-01
1							1940-01-01	2001-01-01
1							1970-01-01	2001-01-01
1							1996-01-01	2000-01-01

EX_GeographicBoundingBox

Count	Component	West	East	North	South
1		-180.00	180.00	90.00	-90.00
1		-180	180	90	-90

EX_TemporalExtent

Count	Start	End
1	1940-01-01	2008-01-01
1	1996-01-01	2003-01-01
1	1993-01-01	2006-01-01
5
1	1987-01-01	1999-01-01
1	1997-01-01	2008-01-01
1	1999-01-01	2008-01-01
1	1999-01-01	2005-01-01
1	1996-01-01	2005-01-01
1	1940-01-01	1999-01-01
1	1940-01-01	2001-01-01
1	1970-01-01	2001-01-01
1	1996-01-01	2000-01-01

MD_Format

Count	Component	Name	Version	specification
1		netCDF, GRD98, binary, xyz, georeferenced tiff, ASCII xyz, ASCII raster, GRD98 binary raster, pdf, png, jpeg, kmz

MD_Medium

none found

MD_Constraints

Count	Component	Use Limitation
1	not for navigation	Not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For navigation, please refer to the NOS nautical chart series.
1	copyright statement	Produced by the NOAA National Geophysical Data Center. Not subject to copyright protection within the United States.
1		These data not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For official navigation products, please refer to the U.S. nautical charts available from the NOAA Office of Coast Survey: http://www.nauticalcharts.noaa.gov.

MD_ReferenceSystem

Count	Component	Code	Authority Title
1	WGS84	urn:ogc:def:crs:EPSG::4326	World Geodetic System 1984
1	MSL	urn:ogc:def:crs:EPSG::5715	Mean Sea Level depth

MD_GridSpatialRepresentation

Count	Component	Number of Dimensions	Cell Geometry Code
1		3	area

MD_Georeferenceable or MI_Georeferenceable

none found

MD_Georectified or MI_Georectified

none found

MD_Dimension

Count	Name Code	Size
1	row	10801
1	column	21601
1	vertical	1

MD_CoverageDescription or MI_CoverageDescription

none found

MD_Band or MI_Band

none found

MI_RangeElementDescription

none found

MD_AggregateInformation

Count	Component	Title	Code	Association Type Code
1		ETOPO1 Global Relief Model		crossReference

LE_Source or LI_Source

Count	Title	Date	Description
1	A high resolution spherical grid topography of the Baltic Sea 2nd edition	2001-01-01	Source Contribution: High resolution spherical grid topography of the Baltic Sea downloaded from web site ; Source Type: online
1	ADD Antarctica Coastline	2006-01-01	Source Contribution: Antarctica coastline data downloaded from web site ; Source Type: online
1	CEP Isolines of the Bathymetry of the Caspian Sea	1999-01-01	Source Contribution: Caspian Sea bathymetric isolines downloaded from web site. ; Source Type: online
1	CIESM Morpho-bathymetry of the Mediterranean Sea	2005-01-01	Source Contribution: Bathymetric grid of the Mediterranean sea derived from multibeam swath sonar bathymetric surveys downloaded from web site ; Source Type: online
1	EISMINT and SCAR Antarctica BEDMAP	2000-01-01	Source Contribution: Antarctica bedrock elevation grid downloaded from web site ; Source Type: online
1	Global Land One-km Base Elevation (GLOBE)	1999-01-01	Source Contribution: gridded topographic data downloaded from web site ; Source Type: online
1	International Bathymetry Chart of the Arctic Ocean (IBCAO)	2008-01-01	Source Contribution: Digital data base that contains all available bathymetric data north of 64 degrees North downloaded from web site ; Source Type: online
1	JODC Bathymetry	1999-01-01	Source Contribution: 500 meter gridded bathymetry data set ; Source Type: online
1	Measured and Estimated Seafloor Topography	2008-01-01	Source Contribution: Grid derived from known soundings and sea-surface altimetry measurements downloaded from web site ; Source Type: online
1	NGDC Global Self-consistent, Hierarchical, High-resolution Shoreline Database (GSHHS)	2003-01-01	Source Contribution: global shoreline data downloaded from web site ; Source Type: online
1	NGDC Gulf of California Bathymetry	2006-01-01	Source Contribution: Multibeam bathymetry data downloaded from web site ; Source Type: online
1	NGDC U.S Coastal Relief Model	2005-01-01	Source Contribution: U.S Coastal Relief Model downloaded from web site ; Source Type: online
1	NGDC U.S Great Lakes Bathymetry	2005-01-01	Source Contribution: U.S Great Lakes Bathymetry downloaded from web site ; Source Type: online
1	NSIDC Antarctica Radarsat Antarctic Mapping Project (RAMP) Topography	2001-01-01	Source Contribution: NSIDC 400 m elevation grid of Antarctica ice surface downloaded from web site ; Source Type: online
1	NSIDC Greenland Bedrock	2001-01-01	Source Contribution: NSIDC 5 km elevation grid of Greenland bedrock downloaded from web site ; Source Type: online
1	Shuttle Radar Topography Mission (SRTM)	2008-01-01	Source Contribution: gridded topographic data downloaded from web site. ; Source Type: online

LE_ProcessStep or LI_ProcessStep

Count	DateTime	Description
1	2008-06-17T00:00:00	All datasets obtained by NGDC were converted to common horizontal and vertical datums of WGS 84 and sea level, respectively, using FME. They were also converted to common file format, ESRI point shapefiles, for visualization and inspection.
1	2008-06-25T00:00:00	Datasets were visually inspected with ArcGIS for identification and editing of data anomalies. Datasets were then compared with overlapping datasets to ensure data consistency.
1	2008-06-30T00:00:00	Coastline datasets were adjusted to fit satellite imagery.
1	2008-07-10T00:00:00	xyz files of the Measured and Estimated Seafloor Topography data (between -500 m and 0 m) were surfaced using GMT's 'surface' tool onto a 1 arc-minute cell size grid that interpolated to fill empty cells. Points extracted along the GSHHS coastline were also included, at -1 m elevation, to force bathymetric interpolation into the coastal zone. The resulting Arc ASCII grid was clipped to the coastline and the -120 m contour to remove values over land and non-coastal waters.
1	2008-07-18T00:00:00	xyz files for each input dataset were gridded using MB-System's 'mbgrid' tool, which utilizes a high-tension spline interpolation method to fill grid cells with no input elevation values. Preferential weighting was given to the NSIDC Antarctica RAMP topography dataset. Least weight was given to the global datasets and the interpolated bathymetric surface. Gridding was performed in 16 regional tiles, each with a 5% data buffer. The grids were imported in ArcGIS and seamlessly merged to create the final global relief model.
1	2008-07-31T00:00:00	ETOPO1 was bult as a global, grid-registered, 1 arc-minute grid that spans from pole to pole and from -180 degrees to 180 degrees in longitude. It is 21601 cells by 10801 cells in dimension, with multiple duplicate cells sitting atop the North and South poles and on the -180 degrees and 180 degrees longitude line. A cell-registered version (21600 by 10800 cells) was created from the grid-registered version by resampling, using GMT's 'grdsample' tool. This resampling introduces some flattening of relief, due to averaging of four grid-registered cell vlaues to produce one cell-registered value. Both types are global, though the grid-registered version should be considered the authoritative version. The cell-registered version may be more appropriate for creating maps and images.

MI_Operation

none found

MI_Platform

none found

MI_Instrument

none found