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Hi Wesley, re: > I am attempting to set up the LDM here to download data for a student-run > weather data website. Any help in getting the data flowing would be > appreciated. We will be happy to help you get things setup! re: > I am working through the installation/configuration right now. Very good. re: > Information > ================= > Site Name: University of South Alabama Weather System > > Administrator: > Dr. Wesley Terwey > 251-461-1389 > address@hidden > > Hostname: > weather.southalabama.edu OK, first thing: There is no reverse DNS for your machine. This can be seen by using utilities like 'nslookup': $ nslookup weather.southalabama.edu Server: 192.168.72.2 Address: 192.168.72.2#53 Non-authoritative answer: Name: weather.southalabama.edu Address: 192.245.224.223 $ nslookup 192.245.224.223 Server: 192.168.72.2 Address: 192.168.72.2#53 ** server can't find 223.224.245.192.in-addr.arpa.: NXDOMAIN As you can see from this listing, there is no IP -> machine name DNS mapping for weather.southalabama.edu. Please work with the networking folks at Sough Alabama to get forward AND reverse DNS working. The reason that this is important is the IP address of the machine REQUESTing data (i.e., your machine) is included in the REQUEST that is set to the upstream machine(s) (the machine(s) that will send data to your machine). The IP address needs to be converted into a fully-qualified hostname (e.g., weather.southalabama.edu) before it is matched against LDM configuration file (~ldm/etc/ldmd.conf) ALLOW lines. re: > Feed Types: > PPS > DDS > HDS > UNIWISC > FSL2 > CONDUIT > LIGHTNING > FNMOC > NEXRAD2 > NEXRAD3 > NIMAGE > ================= Some comments: - PPS, IDS and DDS are most typically REQUESTed as 'IDS|DDPLUS': IDS|DDPLUS == DDS|IDS|PPS - the combination of PPS, DDS and HDS are typically REQUESTed as 'WMO': WMO == IDS|DDPLUS|HDS - the combination of WMO and UNIWISC can be requested as 'UNIDATA': UNIDATA == WMO|UNIWISC == IDS|DDPLUS|HDS|UNIWISC - the FSL2 feed contains wind profiler and other data which can be quite voluminous - the CONDUIT feed is _VERY_ voluminous Unless you have lots of bandwidth, you need to think hard about what portion of this data feed that you want/need. - the LIGHTNING feeds are provided as point-to-point feeds by the top level sites that provide the data free-of-charge to the U.S. university community: - the NLDN lightning data is provided by UAlbany, the New York state University at Albany - the USPLN lightning data is provided by WSI Corporation The contact information for each of these two feeds of lightning data can be found in: Unidata HomePage http://www.unidata.ucar.edu Data -> Lightning Data http://www.unidata.ucar.edu/data/index.html#lightning North American Precision Lightning Network (NAPLN) http://www.unidata.ucar.edu/data/lightning/napln.html Global Lightning Network (GLN) https://www.unidata.ucar.edu/data/lightning/gln.html National Lightning Data Network (NLDN) https://www.unidata.ucar.edu/data/lightning/nldn.html You will need to send an email to the contacts listed in the last pages referenced to request a feed of lightning data. You should indicate in your email that you are a Unidata university participant. You should also only do this _after_ the DNS issue referenced above has been taken care of. - like CONDUIT, the FNMOC feed can be quite voluminous, so you will need to consider which products you want unless you have lots of bandwidth - the NEXRAD2 datastream is also quite voluminous; the same comment made for CONDUIT and FNMOC applies to it - NEXRAD3 contains NEXRAD Level III products for all NEXRADs delivered in the NOAAPort Satellite Broadcast Network (SBN) This feed is also voluminous and has lots of products. Some sites have problems ingesting and processing (typically filing to disk) all of the products available in NEXRAD3. For reference, here is a snapshot of the volumes in the various datastreams that are delivered by the IDD: Data Volume Summary for idd.unidata.ucar.edu Maximum hourly volume 23164.623 M bytes/hour Average hourly volume 15072.076 M bytes/hour Average products per hour 330226 prods/hour Feed Average Maximum Products (M byte/hour) (M byte/hour) number/hour NEXRAD2 5260.667 [ 34.903%] 6978.108 73109.065 CONDUIT 3495.363 [ 23.191%] 5490.003 73157.109 NEXRAD3 1889.778 [ 12.538%] 2409.144 98601.239 FSL2 1520.290 [ 10.087%] 1883.157 1659.674 NGRID 1123.644 [ 7.455%] 2149.776 20112.565 FNMOC 980.239 [ 6.504%] 6781.229 2802.478 HDS 327.107 [ 2.170%] 615.243 17547.065 NIMAGE 196.234 [ 1.302%] 409.064 214.783 GEM 82.142 [ 0.545%] 518.345 935.130 FNEXRAD 70.018 [ 0.465%] 88.544 70.870 IDS|DDPLUS 49.940 [ 0.331%] 70.068 41247.283 EXP 41.478 [ 0.275%] 81.956 393.804 UNIWISC 23.499 [ 0.156%] 33.841 21.609 LIGHTNING 8.160 [ 0.054%] 23.377 346.935 DIFAX 3.367 [ 0.022%] 12.044 5.043 GPS 0.148 [ 0.001%] 1.478 1.065 re: > Thank you very much for your help. No worries. Please let us know when the LDM has been installed on weather.southalabama.edu AND the DNS for that machine is fixed. At that point we will assign you one or more hosts from which you can REQUEST the types of data that you desire. Last question: - how will you be processing the data when you receive it? What I mean is are you going to be using a Unidata-supplied package like GEMPAK or McIDAS to visualize/analyze the data, and, if yes, are you enough familiar with that package to know that it has default LDM configuration settings to decode the data into formats it can use? Or, are you planning on "rolling your own"? Cheers, Tom -- **************************************************************************** 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: DQQ-790553 Department: Support IDD Priority: Normal Status: Closed