scientimate.globalrelief

x, y, z, xyz, xgrid, ygrid, zgrid = scientimate.globalrelief(filepath, xmin=-180, xmax=180, ymin=-90, ymax=90, dispout='no')

Description

Return x (longitude), y (latitude) and z (elevation) data from ETOPO1 Global Relief Model (Amante & Eakins, 2009) interpolated on 0.08 degree grid

ETOPO1 is 1 arc-minute global relief, however, this data are interpolated on 4.8 arc-minute (0.08 degree)

This data are obtained from ETOPO1 Global Relief Bedrock (grid-registered)

ETOPO1 horizontal datum: WGS 84 geographic

ETOPO1 vertical datum: sea level

https://www.ngdc.noaa.gov/mgg/global/global.html

Inputs

filepath

Path of the folder that contains ‘ETOPO1_XYZ_0_08_Deg_Python.npz’ file

Download ETOPO1_XYZ_0_08_Deg_Python.npz file from

https://github.com/akarimp/ScientiMate/releases/download/1.1/ETOPO1_XYZ_0_08_Deg_Python.npz

Example: filepath = r’C:’

xmin=-180

Minimum x (longitude) of domain to be returned in degree

It should be between -180 and 180 degree

xmax=180

Maximum x (longitude) of domain to be returned in degree

It should be between -180 and 180 degree

ymin=-90

Minimum y (latitude) of domain to be returned in degree

It should be between -90 and 90 degree

ymax=90

Maximum y (latitude) of domain to be returned in degree

It should be between -90 and 90 degree

dispout=’no’

Define to display outputs or not (‘yes’: display, ‘no’: not display)

Outputs

x

Interpolated x (longitude) data in degree

y

Interpolated y (latitude) data in degree

z

Interpolated z (elevation) data in degree

xyz

Interpolated xyz data

xyz is a 3-column array

1st column contains longitude (x) data in (Degree)

2nd column contains latitude (y) data in (Degree)

3rd column contains elevation (z) data in (m)

xgrid

Interpolated x (longitude) data on 2d mesh in degree

ygrid

Interpolated y (latitude) data on 2d mesh in degree

zgrid

Interpolated z (elevation) data on 2d mesh in degree

Examples

import scientimate as sm

#Path of ETOPO1_XYZ_0_08_Deg_Python.npz
filepath = r'C:'

#Globe
x,y,z,xyz,xgrid,ygrid,zgrid=sm.globalrelief(filepath,-180,180,-90,90,'yes')

#Middle East
x,y,z,xyz,xgrid,ygrid,zgrid=sm.globalrelief(filepath,24,64,9,43,'yes')

#North America
x,y,z,xyz,xgrid,ygrid,zgrid=sm.globalrelief(filepath,-169,-8,5,90,'yes')

References

ETOPO1 Global Relief Model

Amante, C. and B.W. Eakins, 2009. ETOPO1 1 Arc-Minute Global Relief Model: Procedures, Data Sources and Analysis. NOAA Technical Memorandum NESDIS NGDC-24. National Geophysical Data Center, NOAA. doi:10.7289/V5C8276M

• https://www.ngdc.noaa.gov/mgg/global/global.html
• https://maps.ngdc.noaa.gov/viewers/grid-extract/index.html
• https://www.ngdc.noaa.gov/mgg/global/relief/ETOPO1/
• https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.ngdc.mgg.dem:316

GEBCO Global ocean & land terrain models

• https://www.gebco.net/data_and_products/gridded_bathymetry_data/

Natural Earth 1:10m Raster Data

• https://www.naturalearthdata.com/downloads/10m-raster-data/

Geospatial data

• https://www.mathworks.com/help/map/finding-geospatial-data.html
• https://www.ngdc.noaa.gov/mgg/global/etopo2.html
• https://www.ngdc.noaa.gov/mgg/global/etopo5.HTML
• https://www.ngdc.noaa.gov/mgg/image/2minrelief.html
• https://www.ngdc.noaa.gov/mgg/coastal/crm.html
• https://www.ngdc.noaa.gov/mgg
• https://viewer.nationalmap.gov/launch
• https://earthexplorer.usgs.gov
• http://www.shadedrelief.com/cleantopo2/index.html
• https://www.usna.edu/Users/oceano/pguth/md_help/html/bathymetry.htm
• https://www.opentopodata.org
• https://en.wikipedia.org/wiki/Global_relief_model