On Aug 12, 2005, at 8:18 AM, Glenn Rutledge wrote:
Hi Peter (Ethan?)
I have also just completed the review comments for an accepted AMS
BAMS paper on NOMADS- mostly on data availability and OPeNDAP enabled
client/servers-
Great, would love to see a copy of it. Well, I guess that I will since
I get BAMS.
it's also a requested companion paper to the new NCEP Regional
Reanalysis.
I included ODC but would like to include words on new directions as
per Tennessee......the TDS----is there anything I can use as a
citation or at least sentence or two?
What's on the horizon in OPeNDAP land (JAMES, PLEASE MAKE SURE THAT
THERE IS NOTHING MISLEADING IN THE FOLLOWING, AND IF THERE IS CORRECT
IT, thanks):
1) DAP3 - a phased release that will take place over the next 4 months
of an XML version of DAP2. Specifically, the dds and das will be
encoded in XML. The release will include new servers that are backward
compatible, i.e., they will negotiate with the client to see what
version of the DAP, XML or old style, the client handles and then
return the appropriate version.
2) Server4 - a new version of the servers. These will be based on
servlets as opposed to cgi scripts. Important features in the new
servers:
a) More robust,
b) Much faster to initiate, and
c) More secure.
They will also include THREDDS catalogs as part of the server. This
will greatly facilitate, at a minimum, traversing the directory
structure at a site, and, with a bit more work by the provider, finding
data of interest within a site. GDS servers already make use of THREDDS
catalogs so there will not be a great change for groups using these
servers. We are working with COLA to make sure that our implementation
of THREDDS catalogs in the new servers is compatible, to the extent
possible, with the GDS catalogs.
We anticipate a release of Server4 in early 2006
3) DAP4 - an enhanced version of the DAP with a few new data types and
functions. The specs for this are still being written. We would like to
release this next summer.
Hope that this helps.
Peter
Regards, Glenn
Peter Cornillon wrote:
Hi Tennessee,
I assume that James will chime in with some more info re plans in the
future. What I often do when looking for data is to use google. For
example, a Ferret user just asked the Ferret e-mail list where he
might get T/P data. I googled: topex opendap coards. Ferret feels
comfortable with COARDS so I figured that if I could find his data in
COARDS for available via OPeNDAP he should suck the data directly
into Ferret via OPeNDAP. I found the MERSEA site right off the bat.
I've used the same trick to find SST data and wind data. The work
that we are currently doing to incorporate THREDDS into OPeNDAP
servers as well as to upgrade our servers so that they indicate their
presence on the network is aimed at the same problem. Hopefully, one
can use Google or another search engine to find OPeNDAP servers and
then one can crawl these sites via the THREDDS catalog. We do have a
project with the UCSB Alexandria Digital Library group to work on
better data discovery and I believe that they are investigating a web
crawler that will look for OPeNDAP server based on some of the ideas
that I have brought forward re searches via Google. Hope that this
helps.
Peter
p.s. If you are interested in papers that we have published re
OPeNDAP, please let me know and I will point you at them.
On Aug 11, 2005, at 8:34 PM, Tennessee Leeuwenburg wrote:
Hi all,
I have written a draft paper on the work I have been doing at the
Australian Bureau of Meteorology which has been accepted into a
conference here in September. In light of some of the reviewer
comments, I would like to spend a little more time describing the
OpenDAP community, and going into more depth w.r.t. XML data
catalogs etc.
One thing I thought I might try would be to write a catalog crawler
to demonstrate how one can discover data sources using automated
tools to a greater extent that possible under ad-hoc data
publication.
I also thought I would get some feedback on what the community saw
as the most interesting aspects of thredds/opendap, and what new
directions are on the horizon (if I might be allowed to mix my
metaphors).
Cheers,
-T
--
Peter Cornillon
Graduate School of Oceanography - Telephone: (401) 874-6283
University of Rhode Island - Fax:
(401) 874-6728
Narragansett, RI 02882 - E-mail:
pcornillon@xxxxxxxxxxx
--
Glenn K. Rutledge
NOMADS Program Manager
NOAA Meteorologist / Physical Scientist
National Oceanic and Atmospheric Administration
National Climatic Data Center
151 Patton Ave
Asheville, North Carolina 28801
(828) 271-4097
The contents of this message are mine personally and do not
necessarily reflect any position of the Government or the National
Oceanic and Atmospheric Administration."
--
Peter Cornillon
Graduate School of Oceanography - Telephone: (401) 874-6283
University of Rhode Island - Fax:
(401) 874-6728
Narragansett, RI 02882 - E-mail:
pcornillon@xxxxxxxxxxx
