ERDDAP at the APDRC
Easier access to scientific data

hawaii_soest_690c_fb60_1bce

Dataset Title:	PODAAC smap local rss v3 8day running 40km
Institution:	APDRC (Dataset ID: hawaii_soest_690c_fb60_1bce)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Data Access Form \| Make a graph

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This web page is using OpenLayers (external link)

to display maps which are created on-the-fly by ERDDAP's
Web Map Server (WMS) version 1.3.0.
The controls on the left of the map are for navigation. The control on the right manages the layers.
You can select different values for the data variable's dimension(s):

time:

The legend.

What is WMS?

ERDDAP's Web Map Service (WMS) lets you request an image with data plotted on a map.
WMS (external link)

is an Open Geospatial Consortium (OGC) (external link)

and ISO (19128) (external link)

standard for "the creation
and display of registered and superimposed map-like views of information that come
simultaneously from multiple remote and heterogeneous sources."
See the list of datasets available via WMS at this ERDDAP installation.

Three Ways to Make Maps with WMS

In theory, anyone can download, install, and use WMS client software.
Some clients are: ArcGIS, Refractions PHP WMS Client, and uDig.
To make a client work, you would install the software on your computer.
Then, you would enter the URL of the WMS service into the client.
For example, in ArcGIS (not yet fully working because it doesn't handle time!), use
"Arc Catalog : Add Service : Arc Catalog Servers Folder : GIS Servers : Add WMS Server".
In ERDDAP, this dataset has its own WMS service, which is located at
https://apdrc.soest.hawaii.edu/erddap/wms/hawaii_soest_690c_fb60_1bce/request?
(Some WMS client programs don't want the ? at the end of that URL.)
See the list of datasets available via WMS at this ERDDAP installation.
In practice, we haven't found any WMS clients that properly handle dimensions
other than longitude and latitude (e.g., time), a feature which is specified by the WMS
specification and which is utilized by most datasets in ERDDAP's WMS servers.
You may find that using Make A Graph and selecting the .kml file type (an OGC standard)
to load images into Google Earth provides a good (non-WMS) map client.
See the list of datasets with Make A Graph at this ERDDAP installation.
Web page authors can embed a WMS client in a web page.
For the map above, ERDDAP is using OpenLayers, which is a very versatile WMS client.
OpenLayers doesn't automatically deal with dimensions other than longitude and latitude
(e.g., time), so you will have to write JavaScript (or other scripting code) to do that.
(Adventurous JavaScript programmers can look at the Souce Code for this web page.)
A person with a browser or a computer program can generate special WMS URLs.
For example,
- To get the Capabilities XML file, use
  https://apdrc.soest.hawaii.edu/erddap/wms/hawaii_soest_690c_fb60_1bce/request?service=WMS&request=GetCapabilities&version=1.3.0
- To get an image file with a map with an opaque background, use
  https://apdrc.soest.hawaii.edu/erddap/wms/jplMURSST41/request?service=WMS&version=1.3.0&request=GetMap&bbox=-179.99,-89.99,180.0,89.99&crs=EPSG:4326&width=360&height=180&bgcolor=0x808080&layers=Land,jplMURSST41:analysed_sst,Coastlines,Nations&styles=&format=image/png
- To get an image file with a map with a transparent background, use
  https://apdrc.soest.hawaii.edu/erddap/wms/jplMURSST41/request?service=WMS&version=1.3.0&request=GetMap&bbox=-179.99,-89.99,180.0,89.99&crs=EPSG:4326&width=360&height=180&bgcolor=0x808080&layers=jplMURSST41:analysed_sst&styles=&format=image/png&transparent=TRUE
See the list of datasets available via WMS at this ERDDAP installation.
For more information about generating WMS URLs, see ERDDAP's WMS Documentation .
In practice, it is probably easier and more versatile to use this dataset's Make A Graph web page
than to use WMS for this purpose.
See the list of datasets with Make A Graph at this ERDDAP installation.

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