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---
layout: earthenv
title: DEM90 - EarthEnv
---
<!-- Load the code for handling form inputs to download DEM tiles. -->
<script language="JavaScript" type="text/javascript" src="javascripts/DEMscript.js">
</script>
<h2>EarthEnv-DEM90 digital elevation model</h2>
<p>DATASET: The data distributed here are in EHdr format, unprojected and
referenced to the WGS84 geodetic datum. They are derived from
<a href="http://www.cgiar-csi.org/data/srtm-90m-digital-elevation-database-v4-1">CGIAR-CSI SRTM v4.1</a>
and <a href="http://asterweb.jpl.nasa.gov/gdem.asp">ASTER GDEM v2</a> data
products. These data have been processed and merged to provide continuous
coverage of ~91% of the globe. Processing and merging methodology are
available in
<a href="http://www.sciencedirect.com/science/article/pii/S0924271613002360">Robinson et al. (2014)</a>.</p>
<p>DISTRIBUTION: <span xmlns:dct="http://purl.org/dc/terms/" href="http://purl.org/dc/dcmitype/Dataset" property="dct:title" rel="dct:type">EarthEnv Digital Elevation Model Version 1</span> by <a xmlns:cc="http://creativecommons.org/ns#" href="http://www.earthenv.org/DEM.html" property="cc:attributionName" rel="cc:attributionURL">Natalie Robinson and the NCEAS Environment and Organisms (ENO) Working Group</a> is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 International License</a>.
<br />Permissions beyond the scope of this license may be available at <a xmlns:cc="http://creativecommons.org/ns#" href="http://www.earthenv.org/DEM.html" rel="cc:morePermissions">http://www.earthenv.org/DEM.html</a>.</p>
<a rel="license" href="http://creativecommons.org/licenses/by/4.0/"><img alt="Creative Commons License" style="border-width:0; margin: 0;" src="http://i.creativecommons.org/l/by/4.0/88x31.png" /></a>
<p>NO WARRANTY OR LIABILITY: EarthEnv-DEM90 is provided without any warranty
of any kind whatsoever, either express or implied, including warranties of
merchantability and fitness for a particular purpose. The creators of the
product shall not be liable for incidental, consequential, or special
damages arising out of the use of any data.</p>
<p>ACKNOWLEDGEMENT AND CITATION: Users should cite
<a href="http://www.sciencedirect.com/science/article/pii/S0924271613002360">Robinson et al. (2014)</a>
in the creation of any reports, publications, new data sets, derived
products, or services resulting from the use of this data set, and if possible
link web pages to the EarthEnv-DEM90 website
(<a href="http://www.earthenv.org/DEM.html">http://www.earthenv.org/DEM.html</a>).
Please refer to acknowledgements
in <a href="http://www.sciencedirect.com/science/article/pii/S0924271613002360">Robinson et al. (2014)</a>
for funding and logistic support for EarthEnv-DEM90.</p>
<p>REFERENCE:</p>
<p class="litreference">Robinson, N., Regetz, J., and Guralnick, R. P. (2014). EarthEnv-DEM90: A nearly-global, void-free, multi-scale smoothed, 90m digital elevation model from fused ASTER and SRTM data. ISPRS Journal of Photogrammetry and Remote Sensing, 87:2014, 57-67. Available at <a href="http://www.sciencedirect.com/science/article/pii/S0924271613002360">http://www.sciencedirect.com/science/article/pii/S0924271613002360</a>.</p>
<!-- Select by coordinates. -->
<h3>Get Data by Coordinates</h3>
<p><em>Internet Explorer users: If multiple tiles are desired, please use an alternative browser.</em></p>
<!-- Create radio buttons and text boxes. -->
<form name="CoordInput">
<table class="dem">
<tr>
<th style="background: none; border: none;" />
<th style="padding-right: 2em;" colspan="2">
<input name="Option" value="DD" onClick="Activate()" type="radio">
<span style="font-weight: bold;">Decimal Degrees</span><br />(e.g. E25, S50)</th>
<th colspan="2"><input name="Option" value="DMS" onClick="Activate()" type="radio">
<span style="font-weight: bold;">Degrees: Minutes: Seconds</span><br />(e.g. -50 10 5, 130 20 90)</th>
</tr>
<tr>
<td style="border: none;" />
<td>Minimum</td><td>Maximum</td><td>Minimum</td><td>Maximum</td>
</tr>
<tr>
<td style="text-align: right;">Longitude:</td>
<!--DecDeg_LonMin/Max-->
<td><input name="LonMin" size="5" disabled="disabled" type="text" maxlength="7"></td>
<td><input name="LonMax" size="5" disabled="disabled" type="text" maxlength="7"></td>
<!--DMS Lon min-->
<td>
<input name="LonDMin" size="5" disabled="disabled" type="text" maxlength="4">
<input name="LonMMin" size="5" disabled="disabled" type="text" maxlength="5">
<input name="LonSMin" size="5" disabled="disabled" type="text" maxlength="5">
</td>
<!--DMS Lon max-->
<td>
<input name="LonDMax" size="5" disabled="disabled" type="text" maxlength="4">
<input name="LonMMax" size="5" disabled="disabled" type="text" maxlength="5">
<input name="LonSMax" size="5" disabled="disabled" type="text" maxlength="5">
</td>
</tr>
<tr>
<td style="text-align: right;">Latitude:</td>
<!--DecDeg_LatMin/Max-->
<td><input name="LatMin" size="5" disabled="disabled" type="text" maxlength="6"></td>
<td><input name="LatMax" size="5" disabled="disabled" type="text" maxlength="6"></td>
<!--DMS Lat min-->
<td>
<input name="LatDMin" size="5" disabled="disabled" type="text" maxlength="4">
<input name="LatMMin" size="5" disabled="disabled" type="text" maxlength="5">
<input name="LatSMin" size="5" disabled="disabled" type="text" maxlength="5">
</td>
<!--DMS Lat max-->
<td>
<input name="LatDMax" size="5" disabled="disabled" type="text" maxlength="4">
<input name="LatMMax" size="5" disabled="disabled" type="text" maxlength="5">
<input name="LatSMax" size="5" disabled="disabled" type="text" maxlength="5">
</td>
</tr>
</table>
<input name="goGet" onClick= "NowGoGetThem()" value="Get Tiles" disabled="disabled" type="button">
<p><em>Note: If the region of interest crosses the International Date Line, please download tiles in separate
download sessions (e.g. tiles for region E173 to E180, then for region W180 to W156).</em></p>
</form>
<!-- Select by tiles. -->
<h3>Get Data by Tile (click on tile to download)</h3>
<!-- Add gridded world map. -->
<img src="images/CroppedWP_WithGrid.jpg" alt="WorldGrid" usemap="#worldmap">
<map name="worldmap">
<script language="JavaScript" type="text/javascript">
generateMapDownloadAreas();
</script>
</map>