One Day Old MODIS images in WorldWind

[Lucian]

[Admin's Note: The functionality required for this new dataset in NASA World Wind is not complete. Proper use of this feature requires the manual deletion of the cached data files for this particular data set on a daily basis. Please read the entire installation instructions below before attempting to delete any files in World Wind directories.]

For those who have been asking for more and recent data, here it is:
Two image layers are available, one day old data from http://rapidfire.sci.gsfc.nasa.gov/subsets MODIS Rapid Response System

To enable them, edit the file "Images.xml" from the $WORLDWIND$/Configuration/WorldXMLDescriptors/EarthLayers/ directory and paste the next XML fragment in that file, right before these lines:

<QuadTileSet ShowAtStartup="false">
<Name>USGS Digital Ortho-Quadrangles</Name>

__________________________________ XML configuration segment to be inserted:

<QuadTileSet ShowAtStartup="false">
<Name>Rapid Response MODIS, AQUA day mosaic, via JPL</Name>
<DistanceAboveSurface>0</DistanceAboveSurface>
<LevelZeroTileSizeDegrees>4.0</LevelZeroTileSizeDegrees>
<BoundingBox>
<North>
<Value>90.0</Value>
</North>
<South>
<Value>-90.0</Value>
</South>
<West>
<Value>-180.0</Value>
</West>
<East>
<Value>180.0</Value>
</East>
</BoundingBox>
<TextureSizePixels>512</TextureSizePixels>
<TerrainMapped>true</TerrainMapped>
<NumberLevels>3</NumberLevels>
<DownloadableWMSSet>
<ServerGetMapUrl>http://onearth.jpl.nasa.gov/gis-wms.cgi</ServerGetMapUrl>
<Version>1.1.1</Version>
<ImageFormat>image/jpeg</ImageFormat>
<WMSLayerName>rapid_modis_aqua</WMSLayerName>
<WMSLayerStyle></WMSLayerStyle>
<UseTransparency>false</UseTransparency>
<ServerLogoFilePath>Data\Icons\31.png</ServerLogoFilePath>
</DownloadableWMSSet>
</QuadTileSet>
<QuadTileSet ShowAtStartup="false">
<Name>Rapid Response MODIS, TERRA day mosaic, via JPL</Name>
<DistanceAboveSurface>0</DistanceAboveSurface>
<LevelZeroTileSizeDegrees>4.0</LevelZeroTileSizeDegrees>
<BoundingBox>
<North>
<Value>90.0</Value>
</North>
<South>
<Value>-90.0</Value>
</South>
<West>
<Value>-180.0</Value>
</West>
<East>
<Value>180.0</Value>
</East>
</BoundingBox>
<TextureSizePixels>512</TextureSizePixels>
<TerrainMapped>true</TerrainMapped>
<NumberLevels>3</NumberLevels>
<DownloadableWMSSet>
<ServerGetMapUrl>http://onearth.jpl.nasa.gov/gis-wms.cgi</ServerGetMapUrl>
<Version>1.1.1</Version>
<ImageFormat>image/jpeg</ImageFormat>
<WMSLayerName>rapid_modis_terra</WMSLayerName>
<WMSLayerStyle></WMSLayerStyle>
<UseTransparency>false</UseTransparency>
<ServerLogoFilePath>Data\Icons\31.png</ServerLogoFilePath>
</DownloadableWMSSet>
</QuadTileSet>

--------------------------------- Do not include this line!

In WW 1.2c the file to be edited is WorldLayers.xml.
Once the file is saved (make sure it is saved as text), start WorldWind and go to the <Layer Manager> window. There should be two new options, for MODIS/TERRA and MODIS/AQUA mosaics. Turn one of those one at a time and make sure nothing else is selected. Then zoom in.
These layers are generated daily, and will available with a delay of about one day.
World coverage is not complete, only a few areas are available. The MODIS Rapid Response System team is working on expanding coverage, and those improvements
will be reflected in these layers. At this time the areas covered are US, Australia, most of Europe, South Africa, the Amazon basin and portions of South Asia. For coverage see the link above. All the current images should be in these layers.
The images are visual color, and they are terrain mapped (3D). The clouds are part of the image and do not match the real cloud layer ceiling.
Since WorldWind caches on the user machine, to get new data the user will have to erase or rename the local cache directories and restart WorldWind to fetch new data. WorldWind creates those directories as needed, there is no danger in erasing them.
The cache directories for these two layers are:
"...\High-Resolution Terrain Mapped Imagery\Rapid Response MODIS, X day mosaic, via JPL"
where X is TERRA or AQUA
Q&A:

- Can I get X day?
No, only one day is available at any one time. You can either save the cache directories for a given day, or modify WW to handle multi-day data. I am storing these day mosaics (starting now) and will try make them available in the future.

- What are the images?
The images are mosaics acquired by the MODIS instrument (camera). There are two on orbit, on two satellites, named Aqua and Terra. Terra crosses the daylight side of the earth at about 10:30AM, and Aqua at 1:30PM. Terra is moving N to S (descending) at that time, and Aqua S to N (ascending). The width of the path is constant, leading to uncovered (white) areas at low latitudes. The tilt direction of these white bands depend on the ascending or descending trajectory. These uncovered areas shift from day to day.
The images I use as source are high level products, georeferenced, with borders drawn as part of the image, and with red markers for thermal anomalies. For more details, visit the MODIS Rapid Response System web page.

- What is the resolution of the data?
The raw MODIS data has a resolution of 250m on the ground. Three levels are provided by the OnEarth JPL server, 0,1 and 2, with the source data resolution situated between levels 1 and 2. Level 0 matches the highest resolution of the Blue Marble. There is much less detail than in the Landsat layer!

Happy browsing!

Lucian

[Hawkeye]

I can't get it to work. Can't see it in the layer manager

[MarMaSuk]

Originally posted by Hawkeye+Dec 29 2004, 11:38 AM--><div class='quotetop'>QUOTE(Hawkeye @ Dec 29 2004, 11:38 AM)</div><div class='quotemain'> I can't get it to work. Can't see it in the layer manager

Quoted post

[/b]

Well... I guess I found the error:

<!--QuoteBegin-Lucian@Dec 29 2004, 07:34 AM
To enable them, edit the WorldLayers.xml file from the Configuration directory and paste the next XML fragment in that file, right before these lines:[/quote]
Right code, wrong file. The code must be copied into the file "Images.xml" in the $WORLDWIND$/Configuration/WorldXMLDescriptors/EarthLayers/ directory (where $WORLDWIND$ is of course your WorldWind installation directory). As someone already has posted the WorldLayers.xml is outdated/obsolete.


Greets & Happy New Year!

Martin

[Hawkeye]

Thanks! Now it works

[Lucian]

Originally posted by MarMaSuk@Dec 29 2004, 05:56 AM
Well... I guess I found the error:
Right code, wrong file. The code must be copied into the file "Images.xml" in the $WORLDWIND$/Configuration/WorldXMLDescriptors/EarthLayers/ directory (where $WORLDWIND$ is of course your WorldWind installation directory). As someone already has posted the WorldLayers.xml is outdated/obsolete.
Greets & Happy New Year!

Martin

Quoted post

Thanks, I've updated the main post to show the right file for 1.2d. I can only use 1.2c, 1.2d crashes my machine.

Lucian

[bull]

Brilliant, it works great, thanks Lucian.

Bull

Originally posted by bull@Dec 29 2004, 08:14 AM
Brilliant, it works great, thanks Lucian.

Bull

Quoted post

Just updated to 12/28 data, at about 1600 GMT today. It should be earlier,
expect the update to be around 1300GMT. Last night's storm took out a router.

Lucian

[bull]

I assume those little red squares over Thailand and Cambodia are thermal anomalies, I really hope they aren't all fires!

Bull.

Check out today's images, at 40N,6W (Spain). You can see it in the terra image, and
is smoking heavy in the aqua image!

Lucian

Originally posted by bull@Dec 29 2004, 09:48 AM
I assume those little red squares over Thailand and Cambodia are thermal anomalies, I really hope they aren't all fires!

Bull.

Quoted post

[Lucian]

If you want to check the current images and coverage, use these links:
AQUA
TERRA

Turns out that Rapid Response MODIS subsets are produced as fast as possible, and data is posted with partial coverage first, then replaced with more complete images, sometimes more than a day later than normal. This will show up as white areas in these
layers.

Lucian