World Wind Forums - View Single Post - OnEarth WMS [was: Community Landsat7 Issue?]

Lucian · 05-12-2006, 01:01 AM

Yet another update of http://onearth.jpl.nasa.gov/OnEarth.xml . Four extra layers, also updated daily. Now there are visual, 721 and ndvi for both TERRA and AQUA MODIS, six daily updated layers. I think I changed the names of the layers, so you might have to erase the previous cache folders.
The update schedule is a bit different, it starts around 10AM GMT with TERRA visual, and proceeds every two hours or so with AQUA visual, TERRA 721, AQUA 721, TERRA NDVI and AQUA NDVI.

TERRA crosses the euatorial line on the lit side around 10:30 local time
AQUA does the same around 14:30 local time

Visual is pretty much what is sounds like
721 makes recently burned areas redish and has better water contrast, so fires and floods are more visible.
NDVI has the green color strongly correlated with the density and state of vegetation.

Source data from http://rapidfire.sci.gsfc.nasa.gov/

05-12-2006, 01:01 AM	#22
Lucian OnEarth admin Join Date: Sep 2004 Posts: 183	Yet another update of http://onearth.jpl.nasa.gov/OnEarth.xml . Four extra layers, also updated daily. Now there are visual, 721 and ndvi for both TERRA and AQUA MODIS, six daily updated layers. I think I changed the names of the layers, so you might have to erase the previous cache folders. The update schedule is a bit different, it starts around 10AM GMT with TERRA visual, and proceeds every two hours or so with AQUA visual, TERRA 721, AQUA 721, TERRA NDVI and AQUA NDVI. TERRA crosses the euatorial line on the lit side around 10:30 local time AQUA does the same around 14:30 local time Visual is pretty much what is sounds like 721 makes recently burned areas redish and has better water contrast, so fires and floods are more visible. NDVI has the green color strongly correlated with the density and state of vegetation. Source data from http://rapidfire.sci.gsfc.nasa.gov/ __________________ Any views or opinions presented here are solely those of the author and do not necessarily represent those of Caltech, JPL or NASA. I am not a NASA employee.