I ordered NEXRAD data from the HAS but the Viewer/Exporter cannot find it?
The destination location of the data orders may have changed. Please verify that you have
the most recent version of the Weather and Climate Toolkit
I have data from a non-NCDC source (LDM, etc...). Why can the Viewer/Exporter not find the data?
Right now, the Viewer/Exporter uses several standard naming conventions to indentify the data. If
you want to see all files in the directory, check the 'Show All Files' checkbox. Note that some of
the files may not be able to be read by the Toolkit.
When exporting Radar data, which is more accurate or exact, Raster Grid or Vector (such as Shapefile)?
When exporting Radar data to Raster Grid formats, the data are always resampled from their native structures (often polar range/distance 'radial' coordinates) to a lat/lon NAD83 grid using simple nearest neighbor resampling. The only exception is the Level-3 NEXRAD Digital Precipitation Array (DPA) product, which is already in a GIS-understandable grid and projection (polar stereographic), so it is not remapped and is exported with the correct projection information included.
When exporting Radar data to Vector formats, such as Shapefile, you can choose between point centroids and polygons. Polygons will give you the most exact representation of the Radar 'range bin'. The Point centroids will give you points of the center of the 'range bin'. This is helpful if you want to interpolate the data to a smoothed gridded product in a custom projection or create contours. This method will likely produce better results than exporting a nearest-neighbor resampled lat/lon grid from the WCT and then resampling that grid a second time into another projection in a GIS program.
I get a connection error when I enter my HAS number into the Viewer
This could be a firewall ftp configuration issue. The data can also be accessed by http
entering the following under the "Custom" tab under the "NEXRAD Data Selector":
where the x's are the HAS number assigned to your order.
My GeoTIFFs look all black and/or white in ArcGIS?
ArcGIS seems to not handle 32-bit GeoTIFFs correctly, when using the 'Stretched' symbology.
Try changing to a 'Classified' symbology with many classification breaks.
Problems running on MacOSX versions prior to 10.7.3 (Lion)
Mac Operating Systems at versions prior to 10.7.3 (Lion) are unable to upgrade to Java 7. The Weather and Climate Toolkit,
as of version 3.7, requires Java 7. The last stable release supported on Java 6 and Mac Operating Systems prior to 10.7.3 (Lion)
is version 3.6.7 [download]
. Please refer to the
document for information on differences between versions.
Please refer to the Oracle Java on Mac Documentation
for more information on this topic.
How do I add Desktop Shortcuts or a Start Menu entry (Desktop Integration)?
Below are 4 different options for desktop integration:
- Right-click on the 'Launch the BETA/STABLE Version x.x.x Weather and Climate Toolkit' link and save link (JNLP file) to your computer.
This JNLP file (NOAA_Weather_and_Climate_Toolkit.jnlp) is all that is needed to launch the application.
- Right-click on the 'Launch the BETA/STABLE Version x.x.x Weather and Climate Toolkit' link and bookmark in your browser.
- Drag the 'Launch ...' link onto your desktop.
- From the Windows Start Menu, select 'Run' and type (without quotes) "javaws -viewer". This brings up the Java Cache Viewer.
Select the Weather and Climate Toolkit application, right-click and select "Install Shortcuts". Note: This is the only method that will allow use of the software without an internet connection.
How do I Uninstall this application?
Using 'Add/Remove Programs' in Windows does not appear to work. Instead, use the Java Web Start Cache Viewer to remove the application.
1) Open the Java Web Start Cache Viewer - this can be done by choosing the 'Cache Viewer' option on the 'File' menu in the Weather and Climate Toolkit or
by doing a 'Start'-'Run' and typing (without quotes) "javaws -viewer".
2) Close the Toolkit, select the Weather and Climate Toolkit application in the Cache Viewer and press the big red 'X'!
General Errors and Cache Cleanup
Several unknown errors have been seen using Java Web Start. A full deletion of the Web Start cache seems to clear up these problems.
The errors occur when downloading, verifying or launching the application and include messages such as:
'NullPointerException' and 'found unsigned entry in resource'.
To clean up the cache, select 'Run' from the 'Start' menu and type (without quotes) "javaws -viewer". On Mac or Linux, type "javaws -viewer"
from the terminal command prompt. Now from the Cache Viewer, remove all applications that are 'NOAA Weather and Climate Toolkit' or
'BETA NOAA Weather and Climate Toolkit'. Now select 'Resources' from the 'Show:' menu on the upper left and remove ALL resources. Close the
Cache Viewer and Java Control Panel and retry launching the Weather and Climate Toolkit (WCT) from http://www.ncdc.noaa.gov/oa/wct/install.php
If the above method doesn't work and you are still seeing errors when downloading the WCT, the cache may be manually deleted. On Windows XP,
navigate to the folder C:\Documents and Settings\'user.name'\Application Data\Sun\Java\Deployment\cache . On other operating systems, the
cache location can be obtained by viewing the 'Settings' for Temporary Internet Files from the Java Control Panel.
(WARNING: The following will delete ALL cached applications and resources in Java Web Start) Now delete the folder '6.0'. If you are unable
to delete the folder, you may need to close any open applications that use Java Web Start.