LDM version 5.1.4 has been released. This is a minor update that
fixes a few specific problems. In particular,
changes were made to:
LDM, version 5.1.3, has been released. This is a minor update that is
only necessary for sites running the pqing program to inject data into
the IDD. The LDM 5.1.3 Release Notes describe the revisions in detail.
announcement of the release sent to the
ldm-users mailing list gives the most important changes, enhancements, and
bug fixes.
Thu May 18 1995
Version 1.0 of syscheck was made available today. An
announcement of the release sent to the
ldm-users mailing list describes the utility and includes the README file
for the release. This utility will be included in the next release of the
LDM software. The release is available from the Unidata anonymous FTP server,
ftp://ftp.unidata.ucar.edu/pub/ldm4/syscheck.tar.
Tue Apr 25 1995
Version 1.0 of netcheck was made available today. An announcement of the release sent to the
ldm-users mailing list describes the utility and includes the README file
for the release. This utility will be included in the next release of the
LDM software.
The software is available from the Unidata anonymous FTP server
ftp://ftp.unidata.ucar.edu/pub/ldm4/netcheck.tar.
Fri Apr 7 1995
A maintenance release, LDM 4.1.42, was made available today. An announcement of the release sent to the ldm-users
mailing list describes the most important changes, enhancements, and bug
fixes.
The software, in both source code and binary distributions, is available
from the Unidata anonymous FTP server. Binary releases are available for
the following operating systems:
The source release (from which the above binaries were built) is
available from
ftp://ftp.unidata.ucar.edu/pub/ldm4/ldm.tar.Z. The release announcement
includes additional information, and more details are available in the
documentation accompanying the software.
A note from NMC this morning informs us that the demise of the 2.5 x 5.0 deg.
aviation global model products from the HRS datastream
(product IDs matching "^H.[A-D]... KWBC ...... /mAVN")
has been postponed to 5 June 1995 from the previously announced date of 18
April 1995.
For your
information, here
is a compilation of the email thread about the thinned grid issue.
Wed Apr 5 1995
Users who are saving the aviation global model 1.25 x 1.25 degree (WAFS)
products on the "thinned grid" from the HRS datastream (product IDs matching
"^H.[I-P].* /mAVN") will have to change their pattern-action
entries in the pqact.conf configuration file after 12Z on 11 April 1995 to
allow for either "/mAVN" or "/mSSIAVN" in the product ID,
as the result of a change announced today:
NOUS40 KWBC 051512
FOS NOTICE NO 657 04-05-95
**************************NOTICE******************************
HRS SUBSCRIBERS
AT 12Z ON 11 APRIL... THE PRODUCTION OF THE AVIATION
1.25X1.25 (WAFS) PRODUCTS WILL BE MOVED FROM THE HDS COMPUTERS TO
THE CRAY COMPUTERS. THE TIME OF CREATION AND TRANSMISSION TO THE
NWSTG SHOULD BE APPROXIMATELY THE SAME TIME... PERHAPS EVEN
BETTER IN THE NEAR FUTURE.
THERE WILL BE ONE SLIGHT CHANGE WITH THIS PROCESSING. OCTET
6 OF THE PRODUCT DEFINITION SECTION (PDS) FOR THE 00HR PRODUCTS
WILL BE CHANGED FROM 77 (4D HEX) TO 81 (51 HEX). THIS CORRECTLY
REFLECTS THAT THE ANALYSIS/00HR PRODUCTS ARE GENERATED BY THE
SPECTRAL STATISTICAL INTERPOLATION (SSI) MODEL. IT IS SUGGESTED
THAT USERS BE FLEXIBLE AND ALLOW FOR '77' OR '81' IN THEIR CODES.
THIS WILL PROTECT EVERYONE IN THE EVENT THAT THIS CHANGE HAS TO
BE POSTPONED OR IN THE EVENT THAT THE HDS VERSION IS USED FOR
BACKUP PURPOSES.
As an example, a pqact.conf entry such as the following:
# File "thinned grid" products
#
HRS ^H.[I-P]... KWBC ([0-3][0-9])([0-2][0-9]).*/mAVN
FILE data/GRIB/(\1:yy)(\1:mm)\1\2_avn.wmo
would have to be changed to something like:
# File "thinned grid" products
#
HRS ^H.[I-P]... KWBC ([0-3][0-9])([0-2][0-9]).*(/mAVN|/mSSIAVN)
FILE data/GRIB/(\1:yy)(\1:mm)\1\2_avn.wmo
Mon Apr 3 1995
The following notice broadcast today:
NOUS40 KWBC 031919
FOS NOTICE NO 655 04-03-95
**************************NOTICE******************************
HRS SUBSCRIBERS
EFFECTIVE 18 APRIL 1995...THE 2.5 X 5.0 DEGREE FOS BULLETINS
(2440) WILL BE REMOVED FROM THE FAMILY OF SERVICES HIGH
RESOLUTION DATA SERVICE.
indicates that the aviation global model products from the HRS datastream on
2.5 x 5.0 deg. lat/lon grids (product IDs matching "^H.[A-D]... KWBC ...... /mAVN")
will disappear from the HRS datastream on 18 April 1995. The UPC is working
on providing decoding of the "thinned grid" versions of these products onto
a regular lat/lon grid for use in applications. More information will be
available soon.
[Note: the April 18 date was later postponed to 5 June.]
Fri Mar 10 1995
Information about the online Winter '95 LDM
Workshop presentations is now available to WWW browsers from the LDM
homepage. These online presentations have been updated from the Fall
'94 LDM Workshop.
Thu Feb 16 1995
Today, some new products began appearing on the HRS data stream: the AVN
and NGM model outputs on the `211' grid (also used by the ETA and RUC
models). This makes it possible to compare all the model forecasts on the
same grid. All four models use the same WMO headers, however, so it's more
important than ever to distinguish among them with the /m model field
appended to the WMO header in the product ID, since now a WMO header such as
"YTQB50" could refer to data from any of the AVN, ETA, NGM, or RUC models.
As a reminder, here are example entries for the pqact.conf file to file
ETA and RUC products:
#
# File raw GRIB messages corresponding to ETA model on the Q (211) grid
#
HRS ^[YZ].Q... KWBC ([0-3][0-9])([0-2][0-9]).*/mETA
FILE data/GRIB/(\1:yy)(\1:mm)\1\2_eta.wmo
#
# File raw GRIB messages corresponding to RUC model on the Q (211) grid
#
HRS ^[YZ].Q... KWBC ([0-3][0-9])([0-2][0-9]).*/mRUC
FILE data/GRIB/(\1:yy)(\1:mm)\1\2_ruc.wmo
Wed 9 Feb 1995
There is now an HTML version of the RUC Technical Procedures Bulletin (NWS
TPB #416, September 27, 1994) including the figures available in the
published bulletin. This document describes the Rapid Update Cycle products
that have been added to the HRS data stream. The document is available from
http://www.fsl.noaa.gov/frd-bin/tpbruc.cgi. A PostScript version is
also available from
ftp://ftp.unidata.ucar.edu/pub/ruc.doc.ps.
Fri 3 Feb 1995
A problem was reported with the ulog library in the LDM 4.1.38 release on
HPUX platforms. A fix has been developed for the problem, and new HPUX
binaries are now available. For more details or for the patch necessary for
the source, see the text of the message on this
problem from Glenn Davis.
Wed 11 Jan 1995
A maintenance release, LDM 4.1.38, was made available today. An announcement of the release sent to the ldm-users
mailing list describes the most important changes, enhancements, and bug
fixes.
The software, in both source code and binary distributions, is available
from the Unidata anonymous FTP server. Binary releases are available for
the following operating systems:
- SunOS 4.1.3
- Solaris 2.3
- IRIX 5.2
- OSF/1 3.0
- AIX 3.2
- HP-UX 9.05
The release announcement includes additional information, and more details
are available in the documentation accompanying the software.
Fri 6 Jan 1995
It was announced today that effective January 25 1995 the remaining RUC
(00Z, 03Z, 09Z, and 12Z) products will be added to the High Resolution data
Service (HRS). Currently only the 6-hour forecasts are being broadcast in
the HRS data stream. Thus the volume of RUC data on HRS for each run (every
3 hours) will increase from about 0.83 Mbytes in 123 products to about 4.2
Mbytes in 615 products.
We're testing LDM 4.1.38 on local platforms and revising the Site Manager's
Guide for a new release (probably next Wednesday). The new release will
incorporate the following features and fixes (more detail will be provided
in the RELEASE_NOTES accompanying the release):
- Updated default baud rates for pqing, to reflect the new
Ku-band rates for the Family of Services (9.6 Kbps for DDS, PPS, and
IDS, 19.2 Kbps for HRS and DDPLUS);
- Changed pqing to append a
model indicator to the product identifier for HRS products to
disambiguate products with the same WMO header from different models;
- Changed ldmadmin default to recreate product queue whenever LDM
system starts, instead of using old queue.
- Changed default compilation flags so compatibility with Neilley's
weather program will now be the default (DBFILE appends rather than
overwriting).
- Ported to Intel/BSDI platform.
- Isolated use of LOCAL0 facility for syslogd so it's easy to change,
to avoid conflicts with other packages' use of LOCAL0.
- Included a new feed statistics monitor, ldmprods.
- Added raction utility for pqact to invoke actions on remote hosts
with error messages going to local log file.
- Fixed bug in pqact dates near end-of-month due to use of local_time
instead of gmtime.
- Enhanced ldmadmin to make `stop' action work better.
- Changed mailpqstats to send information for feed routing topology.
- Added ldmadmin support for setting PATH in ldmadmin.conf so
decoders can be found even when installed in wierd places.
- Added ldmadmin `-f feedpat' option to `watch' action.
- Added `-f' (force portmapper unregistration) option to rpc.ldmd so it
will start even if previous rpc.ldmd is still registered with portmapper.
- Fixed sample pqact configuration file to make it easier to uncomment desired
pattern/action lines.
- Revised Site Manager's Guide and various man documents.
Wed 4 Jan 1995
WSI has made available via the World Wide Web a NEXRAD site maintenance
utility for all current WSI/UNIDATA NEXRAD customers. For more details, see
the WSI announcement of the NEXRAD utility
or the new WSI Homepage.
16 Dec 1994
A PostScript version of the RUC Technical Procedures Bulletin (NWS TPB #416,
September 27, 1994, sans figures for now) describing the Rapid Update Cycle
products beginning to appear on the HRS data stream is now available from
ftp://ftp.unidata.ucar.edu/pub/ruc.doc.ps.
12 Dec 1994
Alden said they have improved the way they are generating the DIFAX products
announced last week, so users should see improvements in the quality of the
resulting images.
9 Dec 1994
Peggy Bruehl posted more information on dealing with the new HRS RUC
products that have identical headers to ETA products. Here's an example of
pqact.conf entries that distinguish between the ETA and RUC model outputs,
using the new model identifier information:
#
# File raw GRIB messages corresponding to ETA
#
HRS ^[YZ].Q... KWBC ([0-3][0-9])([0-2][0-9]).*/mETA
FILE data/GRIB/(\1:yy)(\1:mm)\1\2_eta.wmo
#
# File raw GRIB messages corresponding to RUC
#
HRS ^[YZ].Q... KWBC ([0-3][0-9])([0-2][0-9]).*/mRUC
FILE data/GRIB/(\1:yy)(\1:mm)\1\2_ruc.wmo
8 Dec 1994
We learned today that the problems we recently saw with identical WMO
headers for products from different models (the RUC and ETA models) will get
worse in February when the RGL and AVN MARD grids (206 and 209) are
converted to the 211 grid. Then there will be four models with the same WMO
headers.
We installed a new version of pqing at Alden that appends a model
identifier to the product identifiers for HRS GRIB products injected into
the IDD. This permits sites to disambiguate between RUC and ETA model data
that now use identical WMO headers. The new version of pqing adds "/mXXX"
to the product identifier for IDD HRS products, where "XXX" is an
abbreviation for the model.
The tags added to the HRS GRIB products by the new ingester are:
10 /mNOW Global Wind-Wave Forecast Model
25 /mSNO Snow Cover Analysis
39 /mNGM Nested Grid Forecast Model
44 /mSST Sea Surface Temperature Analysis
64 /mROI Regional Optimal Interpolation Analysis
77 /mAVN 126 wave triangular, 28 layer Spectral Model
from Aviation Run
78 /mMRF 126 wave triangular, 28 layer Spectral Model
from Medium Range Forecast Run
83 /mETA ETA Model - 80 km version
86 /mRUC RUC/MAPS Model
88 /mPWAV Ocean Wave model with additional physics
121 /mECMF Something from ECMWF...
122 /m122 Newer ECMWF model
7 Dec 1994
Alden announces the distribution of the National
Weather Service DIFAX service via the Internet.
If you are interested in subscribing to this service please let
Alden know by addressing your messages to "arbettere@alden.com"
or by calling Edie Arbetter at 508-366-8851 extension 2258.
We're now able to convert the new G3 format DIFAX products from Alden to GIF
and PostScript files for viewing or printing. An active mailing list,
difax@unidata.ucar.edu, is exploring the best way to do this. More
information on the DIFAX products.
5 Dec 1994
Steve Emmerson and Tom Yoksas have managed to get a special OS/2 LDM module
running that enables an OS/2 system to capture the McIDAS data from an
upstream site that is relaying the data using the LDM. With this OS/2
module, there is no need for the upstream node to run any special software
other than the LDM. Currently the module only runs on OS/2 systems with the
IBM TCP/IP package. We are working with FTP, Inc. to get an upgrade to their
package so the module will run with their software as well. In the meantime
OS/2 sites using FTP, Inc.software continue to be fed reliably using
mctingest.
1 Dec 1994
Scheduled date for termination of the Alden C Band broadcast. Alden extends
the C-Band broadcast for a few more weeks, giving sites some extra time to
switch to getting their data via the IDD or
Ku-Band broadcast.
Accelerated deployment of the IDD using LDM 4.1 has been going on during
the month of November. For a chronicle of this effort, see the IDD What's
New document. 62 university sites that we know of are now running the
LDM 4.1 software.
Harry Edmon contributed a fix for the gribtogem and gribtonc decoders
that permitted them to decode the new HRS RUC products. The fix turns out
to be a mixed blessing, because the RUC model output grids are the same used
for the ETA model, so the RUC grids overwrite ETA grids in decoded files
produced by gribtogem and gribtonc.
30 Nov 1994
We began seeing Rapid Update Cycle (RUC) products appear for 6-hour forecasts
on the HRS data stream. Some of them have identical WMO headers to ETA
products. The gribtogem and gribtonc decoders are both exiting when trying
to decode these products.
Nov 29, 1994
Robb Kambic released a new version of
the mailpqstats script for
sending statistics collected from an LDM product queue to the UPC for
processing with other IDD statistics to produce hourly
and daily
reports.
We added an HTML document on LDM Product Streams to the LDM Home Page and from that a HTML document on the HDS data stream. As time allows we will fill in similar
information on other data streams.
We created the mailing list alias "hrs@unidata.ucar.edu" for the old
hds@unidata.ucar.edu mailing list, since the HDS data stream has been
renamed HRS for about a year.
18 Nov 1994
Robb Kambic released a new perl script,
ldmprods, that displays local product statistics in one minute intervals.
This can make it easier for a site administrator to monitor LDM performance
and catch problems early.
17 Nov 1994
Mitch Baltuch released the first version of IDD monitor
software, a Motif v1.2-based application that provides an interactive
monitoring facility for nodes on the Internet Data Distribution (IDD)
system. It is designed to provide visual and audible cues when LDM servers
on specified IDD nodes are not responding.
12 Nov 1994
We discovered an incorrect recommendation in the LDM documentation that was
leading some sites to put in crontab entries that mailed in statistics
reports at 5 minutes past the hour. The optimum time for mailing in the
reports is 35 minutes after the hour.
1 Nov 1994
LDM 4.1 (internal version LDM 4.1.36) is released in source code and binary
distributions. The source code distribution may be obtained as the
compressed tar file ldm.tar.Z from
ftp://ftp.unidata.ucar.edu/pub/ldm4/.
The binary distributions for various operating systems are available as
ldm.tar.Z
Russ Rew <russ@unidata.ucar.edu>
This page was updated on
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