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20010413: model data question
- Subject: 20010413: model data question
- Date: Fri, 13 Apr 2001 14:56:29 -0600
On Wed, 11 Apr 2001, Kevin Polston wrote:
> Hi Steve,
>
> I have a question that maybe you can answer for me. I have been
> downloading now for quite some time the ETA 211 grid. That is the one
> that is out through 60 hours at 3 hour intervals. For the most part I
> don't have a problem with it but I have noticed a couple of things I
> hope you can help me with. First......on a regular basis.....the
> moisture grid at 57 hours does not seem to be there. Any parameter I
> display that uses the "moisture field" (ie, dwpt, relh, etc) will not
> display at 57 hours. Second, there does not seem to be a helicity grid
> and I was wondering why this is the case. I have a function which
> calculates (supposedly) storm relative helicity but the values seem just
> a little bit on the high side. I would like to be able to calculate
> other fields (such as EHI) and it would be alot easier - and potentially
> more accurate I believe - if the helicity grid was there. So I was
> wondering if you had any information on this. Also, is there another ETA
> grid I should be downloading instead of the 211 grid? Maybe that one
> would have the helicity grid file with it. Also, what is the ETA file to
> grab to go out to 84 hours....or is that not available yet? Any help
> would be appreciated.
>
ETA is only 60 hours, 50 levels at present. The NWS EMC pages detail
model changes to 22km runs and extended forecast runs.
On NOAAPORT, ETA211 is every 6 hours through 60 hours:
25 010413/1200F000 3000 0 HGHT HLCY
179 010413/1200F006 3000 0 HGHT HLCY
334 010413/1200F012 3000 0 HGHT HLCY
489 010413/1200F018 3000 0 HGHT HLCY
644 010413/1200F024 3000 0 HGHT HLCY
799 010413/1200F030 3000 0 HGHT HLCY
954 010413/1200F036 3000 0 HGHT HLCY
1109 010413/1200F042 3000 0 HGHT HLCY
1264 010413/1200F048 3000 0 HGHT HLCY
1419 010413/1200F054 3000 0 HGHT HLCY
1574 010413/1200F060 3000 0 HGHT HLCY
On the ftp servers at NWS, ETA 212 (40km grid) is 3 hrly and has 57 hours:
Number of grids in file: 11845
Maximum number of grids in file: 12000
NUM TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
66 010413/1200F000 3000 0 HGHT HLCY
621 010413/1200F003 3000 0 HGHT HLCY
1184 010413/1200F006 3000 0 HGHT HLCY
1749 010413/1200F009 3000 0 HGHT HLCY
2314 010413/1200F012 3000 0 HGHT HLCY
2879 010413/1200F015 3000 0 HGHT HLCY
3442 010413/1200F018 3000 0 HGHT HLCY
4007 010413/1200F021 3000 0 HGHT HLCY
4572 010413/1200F024 3000 0 HGHT HLCY
5137 010413/1200F027 3000 0 HGHT HLCY
5700 010413/1200F030 3000 0 HGHT HLCY
6265 010413/1200F033 3000 0 HGHT HLCY
6830 010413/1200F036 3000 0 HGHT HLCY
7395 010413/1200F039 3000 0 HGHT HLCY
7958 010413/1200F042 3000 0 HGHT HLCY
8523 010413/1200F045 3000 0 HGHT HLCY
9088 010413/1200F048 3000 0 HGHT HLCY
9653 010413/1200F051 3000 0 HGHT HLCY
10216 010413/1200F054 3000 0 HGHT HLCY
10781 010413/1200F057 3000 0 HGHT HLCY
11346 010413/1200F060 3000 0 HGHT HLCY
on NOAAPORT, ETA grid 215 (20km) has HLCY through 60 hours on 0/12Z, but
all fields only through 48 hours at 6/18Z
Number of grids in file: 1353
Maximum number of grids in file: 2000
NUM TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
27 010413/1200F000 3000 0 HGHT HLCY
90 010413/1200F003 3000 0 HGHT HLCY
153 010413/1200F006 3000 0 HGHT HLCY
218 010413/1200F009 3000 0 HGHT HLCY
283 010413/1200F012 3000 0 HGHT HLCY
348 010413/1200F015 3000 0 HGHT HLCY
411 010413/1200F018 3000 0 HGHT HLCY
476 010413/1200F021 3000 0 HGHT HLCY
541 010413/1200F024 3000 0 HGHT HLCY
606 010413/1200F027 3000 0 HGHT HLCY
669 010413/1200F030 3000 0 HGHT HLCY
734 010413/1200F033 3000 0 HGHT HLCY
799 010413/1200F036 3000 0 HGHT HLCY
864 010413/1200F039 3000 0 HGHT HLCY
927 010413/1200F042 3000 0 HGHT HLCY
992 010413/1200F045 3000 0 HGHT HLCY
1057 010413/1200F048 3000 0 HGHT HLCY
1122 010413/1200F051 3000 0 HGHT HLCY
1185 010413/1200F054 3000 0 HGHT HLCY
1250 010413/1200F057 3000 0 HGHT HLCY
1315 010413/1200F060 3000 0 HGHT HLCY
> How is the status of NAWIPS 5.6.b coming along? When do you expect to
> release it? I am anxious to say the least to try and see how the
> composited radar works and looks. I was not able to figure out what it
> was you had me download last time (the examples you were creating of the
> composited radar) but I am willing to give it another try if you don't
> mind. Oh...I just remembered one more question for you.....I believe
> the VAD wind profile is available from the NWS ftp server. However....on
> the few times that I have tried to download it and display it.....I got
> no image. Is there something special I need to do or manipulate to
> display that image? I was wondering if it isn't displaying because it
> is a "different" type image than the plan view radar images.
>
I got 5.6c and 5.6.c.1 to add to 5.6.b, so I'm putting them all
in this release, instead of putting 5.6b out there and then
5.6c in a few weeks. Maybe in a week or so I'll have the release available
barring massive support load like I have had the past 2 months.
I put together a web page for gdradr at:
http://motherlode.ucar.edu/unidata/images/nids/gdradr.html
VAD is not the same type of product as the NIDS stuff. It is a set of drawing
commands rather than "data". GEMPAK doesn't support that product.
> I was able to save the radar data from EAX from yesterday's tornado in
> Warrensburg, MO. Pretty impressive storm. I also saved surface and upper
> air data and some satellite imagery from the storm. I am hoping to make
> a web page here about that in the near future. It was interesting to
> watch that storm form southwest of KC but then become tornadic as it
> encountered the warm front in the southern portions of the metro
> area...and stay tornadic across a good portion of Missouri as it rode
> along the warm front!
>
> Thanks for your help Steve.....talk to you later.
>
> KP
>
>
Steve Chiswell
Unidata User Support