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.
Thank you,
Tye Parzybok
--
--------------------------------
Tye W. Parzybok, President
Metstat, Inc.
Windsor, Colorado
voice: 970.686.1253
fax: 208.728.7256
email: tyep@metstat.com
web: www.metstat.com
--------------------------------
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
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@noaa.gov
VOICE: 937-383-0528
FAX: 937-383-0033
On Fri, 2004-01-16 at 06:37, Thomas Adams wrote:
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).
I, for one, would most definitely be interested in the C program (and
source) to decode and write this data out. Can you post it to a web
site somewhere?
Ed