[GRASSLIST:2252] Re: NEXRAD radar stage III precipitation estimates into GRASS 5.x

[Thomas Adams]

Markus et al,

I'm with the Ohio River Forecast Center and we generate Stage-III (now 
called MPE - Multi-sensor Precipitation Estimator, due to a number of 
algorithmic changes) data for the Ohio River basin and surrounding area. 
The problem is, few of the 13 River Forecast Centers (RFCs) save the 
data in NetCDF format. The data format used by all RFCs is called 'xmrg' 
format (a binary file), which is unique to RFCs. However, there is a C 
program (source available) that will decode this data and write it to an 
ASCII lat-lon-value file from which you can easily reformat to import 
into GRASS, re-sample the data, and display in whatever projection you 
desire - I have a script that does this (also available).

Regards,
Tom



Markus Neteler wrote:

>On Thu, Jan 15, 2004 at 12:59:24PM -0700, Tye Parzybok wrote:
>  
>
>>GRASS users,
>>
>>Is anyone aware of a method to import NEXRAD radar stage III
>>precipitation estimates into GRASS 5.x as a raster or GRASS ASCII
>>raster? It appears as though 'r.stage3' works only with NetCDF data
>>provided by the River Forecast Centers (maybe only the Arkansas Red
>>Basin River Forecast Center), but I'd like to import free radar provided
>>from NCDC at this site:
>>http://has.ncdc.noaa.gov/plclimprod/plsql/HAS.FileAppSelect?datasetname=7000
>>
>>into GRASS 5.x. The data files from this web site are the raw stage III
>>data from NOAA/National Weather Service.
>>    
>>
>
>If it helps: since a few days GDAL supports netcdf, should be general
>netcdf support (fetch the GDAL-CVS version and compile).
>
>Markus
>
>  
>

-- 
Thomas E Adams
National Weather Service
Ohio River Forecast Center
1901 South State Route 134
Wilmington, OH 45177

EMAIL:	thomas.adams at noaa.gov

VOICE:	937-383-0528
FAX:	937-383-0033

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