Search found 13 matches

by Greg Fishel
Sat Feb 04, 2006 5:11 am
Forum: WX-SIM, WINGRIDDS, MCIDAS, and other weather forecasting software
Topic: Flag variables relating to cape
Replies: 0
Views: 6635

Flag variables relating to cape

If I understand the documentation correctly, if I type CPOS SBSI, I will see a display of CAPE based on a surface based parcel. If I type CPOS MUSI, I will see a display of CAPE based on the most unstable parcel. Why then tonight am I seeing CPOS SBSI values of 1200-1600 over central North Carolina ...
by Greg Fishel
Wed Jul 06, 2005 12:51 pm
Forum: Digital Atmosphere scripting laboratory
Topic: Scripts for computing Thickness values from RUC
Replies: 2
Views: 9354

I haven't had any luck with the 40km files, but on the FTPPRD site, I simply download the 80km file(about 1.5mb), and then use the import grib function in DAWS. Here is the path on the FTP site: ftp://ftpprd.ncep.noaa.gov/pub/data/nccf/com/ruc/prod/ruc2a.20050705/ The file name for this hour is ruc2...
by Greg Fishel
Fri Jul 01, 2005 3:39 am
Forum: Digital Atmosphere scripting laboratory
Topic: Scripts for computing Thickness values from RUC
Replies: 2
Views: 9354

Scripts for computing Thickness values from RUC

Does anyone know of a way to use scripting to perform calculations on a RUC file? For instance, I have successfully imported the RUC analysis grib file for a given hour. Within that file, the geopotential height at many isobaric levels can be selected. But suppose I want to compute a thickness value...
by Greg Fishel
Mon May 23, 2005 7:30 pm
Forum: WX-SIM, WINGRIDDS, MCIDAS, and other weather forecasting software
Topic: Geostrophic wind and Ageostrophic wind reversed?
Replies: 1
Views: 8081

Geostrophic wind and Ageostrophic wind reversed?

I was just looking at today's GFS run in PCGRIDDS, and used the command "AGEO" to display the 300mb ageostrophic wind. Much to my surprise, it was westerly, looking much like what I would have expected to see if plotting the Geostrophic Wind. Since winds are usually subgeostrophic in a trof, I would...
by Greg Fishel
Thu Mar 24, 2005 10:51 pm
Forum: WX-SIM, WINGRIDDS, MCIDAS, and other weather forecasting software
Topic: Ensembles
Replies: 8
Views: 15865

Ensembles

Had anyone had any luck with displaying ensemble data in PCGRIDDS? I have tried downloading each ensemble perturbation separately, but when processing the data, only the first member is recognized and the others are ignored. I am specifically interested in being able to overlay all the ensemble memb...
by Greg Fishel
Wed Mar 09, 2005 8:17 pm
Forum: WX-SIM, WINGRIDDS, MCIDAS, and other weather forecasting software
Topic: Macros involving time differences
Replies: 0
Views: 7558

Macros involving time differences

I would like to write a macro that enables me to display time differences in different fields, such as pres and hght. I know I could write a very long macro with many lines such as "hght tdif fhrs 00 03", "hght tdif fhrs 03 06", and so on. There has to be a better way. I did notice that there is a c...
by Greg Fishel
Tue Dec 21, 2004 2:02 pm
Forum: WX-SIM, WINGRIDDS, MCIDAS, and other weather forecasting software
Topic: Vector Subtraction
Replies: 4
Views: 13887

Vector Subtraction

I was wondering if there is a way to display a storm relative isentropic analysis. Many papers have indicated that simply doing pressure advection on an isentropic surface is not terribly helpful, especially if the system has a significant translational speed, which most winter systems do. I would l...
by Greg Fishel
Tue Oct 19, 2004 7:14 pm
Forum: WX-SIM, WINGRIDDS, MCIDAS, and other weather forecasting software
Topic: Blank Screen When Starting PCGRIDDS
Replies: 0
Views: 8082

Blank Screen When Starting PCGRIDDS

Has anyone had a problem where upon starting PCGRIDDS, the colored bars appear on the screen, but there is no text? In other words, no drop down menus and no data files to select. The only solution I have found is to keep opening the program over and over again until it finally works. I am running W...
by Greg Fishel
Sat Aug 14, 2004 3:21 pm
Forum: Digital Atmosphere
Topic: Buoys now excluded on full import with version "c"
Replies: 2
Views: 4942

Buoy Data

Another issue is that when retrieving buoy data from Albany, the url used refers to the synoptic hour and not the current hour. Thus, at 14z, you download the 14z metars and the 12z buoys! I edited the URL so that it too was looking at the current hour, and the download went fine. But as has been no...
by Greg Fishel
Thu Aug 05, 2004 9:46 pm
Forum: WX-SIM, WINGRIDDS, MCIDAS, and other weather forecasting software
Topic: GFDL Model on PCGRIDDS32???
Replies: 12
Views: 25384

GFDL in PCGRIDDS

Craig,

Try modifying the gribmodl.dat file in the grib directory. Just add model type 70 to the end of the list, and call it something like GFD. I just tried it and it worked fine. Let me know if you have any trouble.

Greg Fishel