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[IDD #MTL-429470]: FW: ECMWF

Hi Jim and Steve,

re: Steve Decker wrote:
> I am not sure if that would violate the various Unidata terms and
> conditions.  I've sent this to the Unidata folks for clarification.

A Unidata's site's willingness to feed an individual data available in the 
IDD does not violate any Unidata-imposed terms or conditions per se, but there 
some restrictions on the data itself:

1) WMO Resolution 40 restrictions

There are data products that are broadcast in NOAAPort and then relayed
through the IDD that are subject to WMO Resolution 40 restrictions.
One important part of WMO Resolution 40 is that products designated
as being restricted by the country that produces them may not be 
re-imported into their country of origin or used for particular purposes.
The difficult part in complying with WMO Resolution 40 is that there is 
no easily obtainable, definitive list of the products that are subject
to WMO Resolution 40 restrictions.  Unidata educational organizations
typically do not have to worry about these restrictions (except for 
facilitating re-importation into the country of origin) since WMO
Resolution 40 explicitly allows use by educational organizations.

2) data whose re-distribution and use is explicitly restricted by the data

Examples of data whose redistribution and use is explicitly restricted

- lightning data in the LIGHTNING feed that is made available from UAlbany
  (NLDN) and WSI Corporation (USPLN)

- ACARS data available in the PCWS feed

- products in the WSI datastream

Unidata university participants are allowed to relay all non-restricted data to
individuals/sites if they so choose, but it is their responsibility to support
the non-Unidata sites that they feed, not the Unidata Program Center's.  It is
also the responsibility of the site acting in this capacity to make sure that
the folks receiving data from them understand and agree to abide by data
redistribution and use restrictions as spelled out in WMO Resolution 40.

For Jim specifically:


- if Kearny High School is not interested in operating an LDM-based data ingest
  capability as a Unidata associate member, are you sure that you want to do
  this as an individual?

  The reason I ask is mainly because the volumes of data that is available
  in the IDD are daunting.  The following real-time statistics listing will
  give you an idea of the volumes that are flowing in each IDD datastream:

Data Volume Summary for shemp.unidata.ucar.edu

Maximum hourly volume  14338.807 M bytes/hour
Average hourly volume   8887.262 M bytes/hour

Average products per hour     266560 prods/hour

Feed                           Average             Maximum     Products
                     (M byte/hour)            (M byte/hour)   number/hour
CONDUIT                3371.287    [ 37.934%]     5400.211    72973.574
NEXRAD2                1951.544    [ 21.959%]     3107.763    46759.426
NGRID                   884.460    [  9.952%]     1446.086    19320.149
NEXRAD3                 799.953    [  9.001%]     1212.365    66111.894
FSL2                    668.576    [  7.523%]     1386.980      825.872
HDS                     331.668    [  3.732%]      506.504    18169.064
SPARE                   256.770    [  2.889%]      883.902        9.532
FNMOC                   223.008    [  2.509%]     1662.387     2410.574
NIMAGE                  127.709    [  1.437%]      241.462      182.128
GEM                      76.182    [  0.857%]      410.555      939.000
FNEXRAD                  55.818    [  0.628%]       66.329       70.468
EXP                      49.343    [  0.555%]       97.932      400.319
IDS|DDPLUS               46.203    [  0.520%]       62.264    38009.553
UNIWISC                  25.310    [  0.285%]       37.260       28.404
PCWS                     14.392    [  0.162%]       20.102       21.957
DIFAX                     3.694    [  0.042%]       12.963        4.872
LIGHTNING                 1.246    [  0.014%]        4.110      322.149
GPS                       0.097    [  0.001%]        0.935        0.957

If you are not looking to receive data in real-time and 24x7, then remote
access to data hosted on ADDE, RAMADDA and THREDDS servers via an application
like the Unidata IDV may be more useful to you.  I must follow this up
by letting you know that the amount of ECMWF data that is available through
these servers is even less than is available in the IDD.  The reason for
this is that making the data available on a server violates WMO Resolution
40 restrictions, so we (and others) can not make products so restricted.


Unidata User Support                                    UCAR Unidata Program
(303) 497-8642                                                 P.O. Box 3000
address@hidden                                   Boulder, CO 80307
Unidata HomePage                       http://www.unidata.ucar.edu

Ticket Details
Ticket ID: MTL-429470
Department: Support IDD
Priority: Normal
Status: Closed