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Dataset Title:  New Orleans, Louisiana Coastal Digital Elevation Model (new orleans 13 mllw
2010) [xysize]
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Institution:  NOAA   (Dataset ID: noaa_ngdc_1eec_4d55_72b6)
Information:  Summary ? | License ? | Metadata | Background (external link) | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 xysize (count) ?      125994421    1.0 (even)
  < slider >
 
Grid Variables (which always also download all of the dimension variables)
 z (meters) ?

File type: (more info)

(Documentation / Bypass this form) ?
 
(Please be patient. It may take a while to get the data.)


 

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  xysize {
    Int32 actual_range 0, 125994420;
    String ioos_category "Unknown";
    String long_name "Xysize";
    String units "count";
  }
  z {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "Topography";
    String ioos_category "Bathymetry";
    String long_name "Z";
    Int32 node_offset 0;
    String positive "up";
    String units "meters";
  }
  NC_GLOBAL {
    String cdm_data_type "Grid";
    String comment "Developed for the Office of Coast Survey (OCS), NOAA Coastal Survey Development Laboratory (CSDL) in support of NOAA's Vertical Datum Transformation tool (VDatum).";
    String Conventions "ACDD 1.3, CF-1.6, COARDS";
    String creator_email "dem.info@noaa.gov";
    String creator_institution "DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce; publisher; DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce; Boulder; Colorado; publisher; DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce; originator; Citation URL; https://www.ngdc.noaa.gov/dem/squareCellGrid/download/680; New Orleans, LA 1/3 arc-second MLLW DEM; Download page for accessing DEM, metadata record and development report.; download; Citation URL; https://www.ngdc.noaa.gov/mgg/inundation/vdatum/vdatum.html; NOAA VDatum DEM Project; Project web page.; information";
    String creator_name "National Centers for Environmental Information";
    String creator_type "group";
    String creator_url "https://www.ngdc.noaa.gov/mgg/bathymetry/relief.html";
    String date_issued "2010-04-01";
    String date_metadata_modified "2016-07-28";
    String geospatial_bounds_vertical_crs "Mean Lower Low Water depth";
    String history 
"NOS Hydrographic Surveys; Hydrographic Survey in the vicinity of Lake Borgne, Louisiana (2007); USACE Hydrographic Surveys; NOAA Coastal Services Center Coastal Bathymetric-Topographic Lidar; NOAA Coastal Services Center Levee Topographic Lidar; Composite Shoreline and associated data of Louisiana State Composite, LA_COMP; Mississippi State County Lidar; Louisiana State topographic lidar
2018-04-25T14:19:51Z https://www.ngdc.noaa.gov/thredds/dodsC/regional/new_orleans_13_mllw_2010.nc
2018-04-25T14:19:51Z http://upwell.pfeg.noaa.gov/erddap/griddap/noaa_ngdc_1eec_4d55_72b6.das";
    String id "regionalDatasetScan/new_orleans_13_mllw_2010.nchttps://www.ngdc.noaa.gov/thredds/dodsC/regional/new_orleans_13_mllw_2010.nc";
    String infoUrl "https://www.ngdc.noaa.gov/mgg/coastal/coastal.html";
    String institution "NOAA";
    String keywords "bathymetry, bathymetry/seafloor, centers, coastal, coastal relief, data, dem, DEM > Digital Elevation Model, depth, digital, earth, Earth Science > Land Surface > Topography > Terrain Elevation, Earth Science > Land Surface > Topography > Topographical Relief Maps, Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry, Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography, Earth Science > Oceans > Bathymetry/Seafloor Topography > Water Depth, Earth Science > Oceans > Coastal Processes > Coastal Elevation, elevation, environmental, gridded elevations, h: 1 meter - < 30 meters, information, integrated bathymetry and topography, land, louisiana, maps, mllw, model, national, ncei, nesdis, new, noaa, ocean, oceans, orleans, processes, relief, science, seafloor, surface, terrain, topographical, topography, v: < 1 meter, water, xysize";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "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.; Produced by the NOAA National Geophysical Data Center. Not subject to copyright protection within the United States.; While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.";
    String naming_authority "gov.noaa.ngdc.mgg.dem";
    String product_version "First";
    String project "ICSU-WDS > International Council for Science - World Data System";
    String publisher_email "dem.info@noaa.gov";
    String publisher_name "National Centers for Environmental Information";
    String publisher_type "institution";
    String publisher_url "https://www.ngdc.noaa.gov/mgg/bathymetry/relief.html";
    String references "Digital Elevation Models of New Orleans, LA: Procedures, Data Sources, and Analysis";
    String source "NOS Hydrographic Surveys; Hydrographic Survey in the vicinity of Lake Borgne, Louisiana (2007); USACE Hydrographic Surveys; NOAA Coastal Services Center Coastal Bathymetric-Topographic Lidar; NOAA Coastal Services Center Levee Topographic Lidar; Composite Shoreline and associated data of Louisiana State Composite, LA_COMP; Mississippi State County Lidar; Louisiana State topographic lidar";
    String sourceUrl "https://www.ngdc.noaa.gov/thredds/dodsC/regional/new_orleans_13_mllw_2010.nc";
    String standard_name_vocabulary "CF Standard Name Table v29";
    String summary "National Centers for Environmental Information (NCEI) builds and distributes high-resolution, coastal digital elevation models (DEMs) that integrate ocean bathymetry and land topography to support NOAA's mission to understand and predict changes in Earth's environment, and conserve and manage coastal and marine resources to meet our Nation's economic, social, and environmental needs. DEMs are used for coastal process modeling (tsunami inundation, storm surge, sea-level rise, contaminant dispersal, etc.), ecosystems management and habitat research, coastal and marine spatial planning, and hazard mitigation and community preparedness.";
    String title "New Orleans, Louisiana Coastal Digital Elevation Model (new orleans 13 mllw 2010) [xysize]";
  }
}

 

Using griddap to Request Data and Graphs from Gridded Datasets

griddap lets you request a data subset, graph, or map from a gridded dataset (for example, sea surface temperature data from a satellite), via a specially formed URL. griddap uses the OPeNDAP (external link) Data Access Protocol (DAP) (external link) and its projection constraints (external link).

The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.

griddap request URLs must be in the form
https://upwell.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://upwell.pfeg.noaa.gov/erddap/griddap/jplMURSST41.htmlTable?analysed_sst[(2002-06-01T09:00:00Z)][(-89.99):1000:(89.99)][(-179.99):1000:(180.0)]
Thus, the query is often a data variable name (e.g., analysed_sst), followed by [(start):stride:(stop)] (or a shorter variation of that) for each of the variable's dimensions (for example, [time][latitude][longitude]).

For details, see the griddap Documentation.


 
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