<div dir="ltr"><div>Use the <a href="http://www.iges.org/grads/gadoc/gradfuncfndlvl.html">fndlvl</a> function.<br><br></div>Jeff Duda<br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Sep 24, 2013 at 3:44 AM, Geeta Geeta <span dir="ltr"><<a href="mailto:geeta124@hotmail.com" target="_blank">geeta124@hotmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div dir="ltr">Hi all, <br>I want to know how can plot the freezing level using Grads. <br>I have the WRF output which I am post processing using ARWpost. <br>Any hints???<br><br>geeta<br> <br><div>> From: <a href="mailto:gradsusr-request@gradsusr.org" target="_blank">gradsusr-request@gradsusr.org</a><br>
> Subject: gradsusr Digest, Vol 43, Issue 47<br>> To: <a href="mailto:gradsusr@gradsusr.org" target="_blank">gradsusr@gradsusr.org</a><br>> Date: Thu, 19 Sep 2013 18:51:45 -0400<br>> <br>> Send gradsusr mailing list submissions to<br>
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> or, via email, send a message with subject or body 'help' to<br>> <a href="mailto:gradsusr-request@gradsusr.org" target="_blank">gradsusr-request@gradsusr.org</a><br>> <br>> You can reach the person managing the list at<br>
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> <br>> <br>> Today's Topics:<br>> <br>> 1. Re: GrADS Control File for Array with Spectral Band Dimension<br>> (Jennifer Adams)<br>> 2. Re: GrADS Control File for Array with Spectral Band Dimension<br>
> (James E. Johnson)<br>> 3. Problem Solved - Difference Files (Phil Klotzbach)<br>> <br>> <br>> ----------------------------------------------------------------------<br>> <br>> Message: 1<br>
> Date: Thu, 19 Sep 2013 16:55:58 -0400<br>> From: Jennifer Adams <<a href="mailto:jma@cola.iges.org" target="_blank">jma@cola.iges.org</a>><br>> Subject: Re: [gradsusr] GrADS Control File for Array with Spectral<br>
> Band Dimension<br>> To: GrADS Users Forum <<a href="mailto:gradsusr@gradsusr.org" target="_blank">gradsusr@gradsusr.org</a>><br>> Message-ID: <<a href="mailto:FEDA1F66-6D49-470D-A8E0-F78EE3E928CA@cola.iges.org" target="_blank">FEDA1F66-6D49-470D-A8E0-F78EE3E928CA@cola.iges.org</a>><br>
> Content-Type: text/plain; charset="us-ascii"<br>> <br>> First of all, thank you for providing all the information and data I needed to reproduce the error! The failure of method 1 (using array indices in the units field of the variable declaration instead of x,y,z,t,e) is indeed a bug that is unique to the hdf5 data type. The critical bit of information in the error message from the HDF5 library was this: "src and dest data spaces have different sizes." In method 1, the variables are described to GrADS as being only 2-dimensional (i.e., not Z-varying) even though they really have 3 varying dimensions, and the library trips on this deception. The netcdf library is not as fussy. I will put a fix in version 2.1, but for now you will have to use method 2. <br>
> --Jennifer<br>> <br>> <br>> On Sep 19, 2013, at 3:29 PM, James E. Johnson wrote:<br>> <br>> > I'm using grads-2.0.2-bin-CentOS5.8-x86_64.tar.gz<br>> > <br>> > I have an HDF-EOS5 file with some data arrays that are 3 dimensional, with the <br>
> > third dimension representing wavelength/spectral band. I created a control <br>> > file for this data following the description at <br>> > <a href="http://www.iges.org/grads/gadoc/gadocindex.html" target="_blank">http://www.iges.org/grads/gadoc/gadocindex.html</a> (section VAR subsection <br>
> > units). It says there are two ways to implement this, first with an array <br>> > index in the units dimension list, the second with dimension values specified <br>> > in the Z axis. The second method works, however the first method keeps giving <br>
> > me errors:<br>> > <br>> > HDF5-DIAG: Error detected in HDF5 (1.8.7) thread 0:<br>> > #000: H5Dio.c line 174 in H5Dread(): can't read data<br>> > major: Dataset<br>> > minor: Read failed<br>
> > #001: H5Dio.c line 348 in H5D_read(): src and dest data spaces have <br>> > different sizes<br>> > major: Invalid arguments to routine<br>> > minor: Bad value<br>> > H5Dread failed for short data<br>
> > Data Request Error: Error for variable 'aaod342'<br>> > Error ocurred at column 1<br>> > DISPLAY error: Invalid expression<br>> > Expression = aaod342<br>> > <br>> > <br>
> > <br>> > The sample data file is:<br>> > <a href="ftp://acdisc.gsfc.nasa.gov/data/s4pa/Aura_OMI_Level3/OMAEROe.003/2013/OMI-" target="_blank">ftp://acdisc.gsfc.nasa.gov/data/s4pa/Aura_OMI_Level3/OMAEROe.003/2013/OMI-</a><br>
> > Aura_L3-OMAEROe_2013m0601_v003-2013m0603t015851.he5<br>> > <br>> > <br>> > First method (array index) control file:<br>> > DSET OMI-Aura_L3-OMAEROe_2013m0601_v003-2013m0603t015851.he5<br>
> > DTYPE hdf5_grid<br>> > TITLE OMI/Aura Multi-wavelength Aerosol Optical Depth and Single Scattering <br>> > Albedo Daily L3 Global 0.25x0.25 deg Lat/Lon Grid for 1 June 2013<br>> > UNDEF -32767 _FillValue<br>
> > XDEF 1440 linear -180 0.25<br>> > YDEF 720 linear -90 0.25<br>> > ZDEF 1 levels 1<br>> > TDEF 1 linear 1jun2013 1dy<br>> > VARS 5<br>> > /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/AbsorbingAerosolOpticalThicknessMW=>aaod342 <br>
> > 0 0,y,x Absorbing Aerosol Optical Thickness at 342.5 nm<br>> > /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/AbsorbingAerosolOpticalThicknessMW=>aaod388 <br>> > 0 1,y,x Absorbing Aerosol Optical Thickness at 388.0 nm<br>
> > /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/AbsorbingAerosolOpticalThicknessMW=>aaod442 <br>> > 0 2,y,x Absorbing Aerosol Optical Thickness at 442.0 nm<br>> > /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/AbsorbingAerosolOpticalThicknessMW=>aaod463 <br>
> > 0 3,y,x Absorbing Aerosol Optical Thickness at 463.0 nm<br>> > /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/AbsorbingAerosolOpticalThicknessMW=>aaod483 <br>> > 0 4,y,x Absorbing Aerosol Optical Thickness at 483.5 nm<br>
> > ENDVARS<br>> > <br>> > <br>> > Second method (Z dimension) control file:<br>> > DSET OMI-Aura_L3-OMAEROe_2013m0601_v003-2013m0603t015851.he5<br>> > DTYPE hdf5_grid<br>> > TITLE OMI/Aura Multi-wavelength Aerosol Optical Depth and Single Scattering <br>
> > Albedo Daily L3 Global 0.25x0.25 deg Lat/Lon Grid for 1 June 2013<br>> > UNDEF -32767 _FillValue<br>> > XDEF 1440 linear -180 0.25<br>> > YDEF 720 linear -90 0.25<br>> > ZDEF 5 levels 342.5 388.0 442.0 463.0 483.5<br>
> > TDEF 1 linear 1jun2013 1dy<br>> > VARS 1<br>> > /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/AbsorbingAerosolOpticalThicknessMW=>aaod <br>> > 5 z,y,x Absorbing Aerosol Optical Thickness<br>
> > ENDVARS<br>> > <br>> > <br>> > How do I get method 1 (array index) to work? Is there something wrong with <br>> > ZDEF? Or is this a GrADS bug?<br>> > <br>> > ------------------------------------------------------------------------------<br>
> > | James E. Johnson | address: |<br>> > | ADNET Systems, Inc. | NASA Goddard Space Flight Center |<br>> > | e-mail: <a href="mailto:james.johnson@nasa.gov" target="_blank">james.johnson@nasa.gov</a> | Data and Information Services Center |<br>
> > | phone: 301-614-5121 | Code 610.2, Bldg 32, Room S130G |<br>> > | fax: 301-614-5268 | Greenbelt, MD 20771 |<br>> > ------------------------------------------------------------------------------<br>
> > _______________________________________________<br>> > gradsusr mailing list<br>> > <a href="mailto:gradsusr@gradsusr.org" target="_blank">gradsusr@gradsusr.org</a><br>> > <a href="http://gradsusr.org/mailman/listinfo/gradsusr" target="_blank">http://gradsusr.org/mailman/listinfo/gradsusr</a><br>
> <br>> --<br>> Jennifer M. Adams<br>> Center for Ocean-Land-Atmosphere Studies (COLA)<br>> 111 Research Hall, Mail Stop 2B3<br>> George Mason University<br>> 4400 University Drive<br>> Fairfax, VA 22030 <br>
> <br>> <br>> <br>> <br>> <br>> -------------- next part --------------<br>> An HTML attachment was scrubbed...<br>> URL: <a href="http://gradsusr.org/pipermail/gradsusr/attachments/20130919/406de0ac/attachment-0001.html" target="_blank">http://gradsusr.org/pipermail/gradsusr/attachments/20130919/406de0ac/attachment-0001.html</a> <br>
> <br>> ------------------------------<br>> <br>> Message: 2<br>> Date: Thu, 19 Sep 2013 18:11:44 -0400<br>> From: "James E. Johnson" <<a href="mailto:James.Johnson@nasa.gov" target="_blank">James.Johnson@nasa.gov</a>><br>
> Subject: Re: [gradsusr] GrADS Control File for Array with Spectral<br>> Band Dimension<br>> To: <<a href="mailto:gradsusr@gradsusr.org" target="_blank">gradsusr@gradsusr.org</a>><br>> Message-ID: <<a href="mailto:201309191811.44416.James.Johnson@nasa.gov" target="_blank">201309191811.44416.James.Johnson@nasa.gov</a>><br>
> Content-Type: text/plain; charset="us-ascii"<br>> <br>> On Thursday 19 September 2013 04:55:58 pm Jennifer Adams wrote:<br>> > First of all, thank you for providing all the information and data I needed<br>
> > to reproduce the error! The failure of method 1 (using array indices in<br>> > the units field of the variable declaration instead of x,y,z,t,e) is<br>> > indeed a bug that is unique to the hdf5 data type. The critical bit of<br>
> > information in the error message from the HDF5 library was this: "src and<br>> > dest data spaces have different sizes." In method 1, the variables are<br>> > described to GrADS as being only 2-dimensional (i.e., not Z-varying) even<br>
> > though they really have 3 varying dimensions, and the library trips on<br>> > this deception. The netcdf library is not as fussy. I will put a fix in<br>> > version 2.1, but for now you will have to use method 2. --Jennifer<br>
> <br>> Thanks Jennifer,<br>> <br>> I think there may be another bug. I have a more extensive control file with <br>> all the variables from the file. I can successfully display data from the <br>> first variable I read, but subsequent variables complain:<br>
> <br>> HDF5-DIAG: Error detected in HDF5 (1.8.7) thread 0:<br>> #000: H5Shyper.c line 6593 in H5Sselect_hyperslab(): not a data space<br>> major: Invalid arguments to routine<br>> minor: Inappropriate type<br>
> HDF5 Error: unable to select dataspace hyperslab<br>> Data Request Error: Error for variable 'uvai'<br>> Error ocurred at column 1<br>> DISPLAY error: Invalid expression<br>> Expression = uvai<br>
> <br>> Here is the complete config file for this product:<br>> DSET OMI-Aura_L3-OMAEROe_2013m0601_v003-2013m0603t015851.he5<br>> DTYPE hdf5_grid<br>> TITLE OMI/Aura Multi-wavelength Aerosol Optical Depth and Single Scattering <br>
> Albedo Daily L3 Global 0.25x0.25 deg Lat/Lon Grid<br>> UNDEF -32767 _FillValue<br>> UNPACK ScaleFactor Offset<br>> XDEF 1440 linear -180 0.25<br>> YDEF 720 linear -90 0.25<br>> ZDEF 5 levels 342.5 388.0 442.0 463.0 483.5<br>
> TDEF 5000 linear 1oct2004 1dy<br>> VARS 15<br>> /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/AbsorbingAerosolOpticalThicknessMW=>aaod <br>> 5 z,y,x Absorbing Aerosol Optical Thickness<br>> /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/AerosolModelMW=>amod 0 y,x <br>
> Aerosol Model<br>> /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/AerosolOpticalThicknessMW=>aod <br>> 5 z,y,x Aerosol Optical Thickness<br>> /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/AerosolOpticalThicknessPassedThresholdMean=>aodptm <br>
> 0 y,x Aerosol Optical Thickness Passed Threshold Mean<br>> /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/AerosolOpticalThicknessPassedThresholdStd=>aodpts <br>> 0 y,x Aerosol Optical Thickness Passed Threshold Standard Deviation<br>
> /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/Latitude=>lat 0 y,x Latitude<br>> /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/Longitude=>lon 0 y,x <br>> Longitude<br>> /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/SingleScatteringAlbedoMW=>ssa 5 <br>
> z,y,x Single Scattering Albedo<br>> /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/SingleScatteringAlbedoPassedThresholdMean=>ssaptm <br>> 0 y,x Single Scattering Albedo Passed Threshold Mean<br>> /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/SingleScatteringAlbedoPassedThresholdStd=>ssapts <br>
> 0 y,x Single Scattering Albedo Passed Threshold Standard Deviation<br>> /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/SolarZenithAngle=>sza 0 y,x <br>> Solar Zenith Angle<br>> /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/TerrainReflectivity=>tref 0 <br>
> y,x Terrain Reflectivity<br>> /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/UVAerosolIndex=>uvai 0 y,x UV <br>> Aerosol Index<br>> /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/VISAerosolIndex=>visai 0 y,x <br>
> VIS Aerosol Index<br>> /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/ViewingZenithAngle=>vza 0 y,x <br>> Viewing Zenith Angle<br>> ENDVARS<br>> <br>> <br>> Does the optional CACHESIZE attribute needed to be set?<br>
> <br>> James Johnson<br>> <br>> > On Sep 19, 2013, at 3:29 PM, James E. Johnson wrote:<br>> > > I'm using grads-2.0.2-bin-CentOS5.8-x86_64.tar.gz<br>> > ><br>> > > I have an HDF-EOS5 file with some data arrays that are 3 dimensional,<br>
> > > with the third dimension representing wavelength/spectral band. I created<br>> > > a control file for this data following the description at<br>> > > <a href="http://www.iges.org/grads/gadoc/gadocindex.html" target="_blank">http://www.iges.org/grads/gadoc/gadocindex.html</a> (section VAR subsection<br>
> > > units). It says there are two ways to implement this, first with an array<br>> > > index in the units dimension list, the second with dimension values<br>> > > specified in the Z axis. The second method works, however the first<br>
> > > method keeps giving me errors:<br>> > ><br>> > > HDF5-DIAG: Error detected in HDF5 (1.8.7) thread 0:<br>> > > #000: H5Dio.c line 174 in H5Dread(): can't read data<br>> > > major: Dataset<br>
> > > minor: Read failed<br>> > > #001: H5Dio.c line 348 in H5D_read(): src and dest data spaces have<br>> > > different sizes<br>> > > major: Invalid arguments to routine<br>> > > minor: Bad value<br>
> > > H5Dread failed for short data<br>> > > Data Request Error: Error for variable 'aaod342'<br>> > > Error ocurred at column 1<br>> > > DISPLAY error: Invalid expression<br>
> > > Expression = aaod342<br>> > ><br>> > ><br>> > ><br>> > > The sample data file is:<br>> > > <a href="ftp://acdisc.gsfc.nasa.gov/data/s4pa/Aura_OMI_Level3/OMAEROe.003/2013/OMI" target="_blank">ftp://acdisc.gsfc.nasa.gov/data/s4pa/Aura_OMI_Level3/OMAEROe.003/2013/OMI</a><br>
> > >- Aura_L3-OMAEROe_2013m0601_v003-2013m0603t015851.he5<br>> > ><br>> > ><br>> > > First method (array index) control file:<br>> > > DSET OMI-Aura_L3-OMAEROe_2013m0601_v003-2013m0603t015851.he5<br>
> > > DTYPE hdf5_grid<br>> > > TITLE OMI/Aura Multi-wavelength Aerosol Optical Depth and Single<br>> > > Scattering Albedo Daily L3 Global 0.25x0.25 deg Lat/Lon Grid for 1 June<br>> > > 2013 UNDEF -32767 _FillValue<br>
> > > XDEF 1440 linear -180 0.25<br>> > > YDEF 720 linear -90 0.25<br>> > > ZDEF 1 levels 1<br>> > > TDEF 1 linear 1jun2013 1dy<br>> > > VARS 5<br>> > > /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/AbsorbingAerosolOpticalThic<br>
> > >knessMW=>aaod342 0 0,y,x Absorbing Aerosol Optical Thickness at 342.5 nm<br>> > > /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/AbsorbingAerosolOpticalThic<br>> > >knessMW=>aaod388 0 1,y,x Absorbing Aerosol Optical Thickness at 388.0 nm<br>
> > > /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/AbsorbingAerosolOpticalThic<br>> > >knessMW=>aaod442 0 2,y,x Absorbing Aerosol Optical Thickness at 442.0 nm<br>> > > /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/AbsorbingAerosolOpticalThic<br>
> > >knessMW=>aaod463 0 3,y,x Absorbing Aerosol Optical Thickness at 463.0 nm<br>> > > /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/AbsorbingAerosolOpticalThic<br>> > >knessMW=>aaod483 0 4,y,x Absorbing Aerosol Optical Thickness at 483.5 nm<br>
> > > ENDVARS<br>> > ><br>> > ><br>> > > Second method (Z dimension) control file:<br>> > > DSET OMI-Aura_L3-OMAEROe_2013m0601_v003-2013m0603t015851.he5<br>> > > DTYPE hdf5_grid<br>
> > > TITLE OMI/Aura Multi-wavelength Aerosol Optical Depth and Single<br>> > > Scattering Albedo Daily L3 Global 0.25x0.25 deg Lat/Lon Grid for 1 June<br>> > > 2013 UNDEF -32767 _FillValue<br>> > > XDEF 1440 linear -180 0.25<br>
> > > YDEF 720 linear -90 0.25<br>> > > ZDEF 5 levels 342.5 388.0 442.0 463.0 483.5<br>> > > TDEF 1 linear 1jun2013 1dy<br>> > > VARS 1<br>> > > /HDFEOS/GRIDS/ColumnAmountAerosol/Data~Fields/AbsorbingAerosolOpticalThic<br>
> > >knessMW=>aaod 5 z,y,x Absorbing Aerosol Optical Thickness<br>> > > ENDVARS<br>> > ><br>> > ><br>> > > How do I get method 1 (array index) to work? Is there something wrong<br>
> > > with ZDEF? Or is this a GrADS bug?<br>> > ><br>> > > -------------------------------------------------------------------------<br>> > >-----<br>> > ><br>> > > | James E. Johnson | address: <br>
> > > | | ADNET Systems, Inc. | NASA Goddard Space Flight<br>> > > | Center | e-mail: <a href="mailto:james.johnson@nasa.gov" target="_blank">james.johnson@nasa.gov</a> | Data and Information<br>
> > > | Services Center | phone: 301-614-5121 | Code 610.2,<br>> > > | Bldg 32, Room S130G | fax: 301-614-5268 | <br>> > > | Greenbelt, MD 20771 |<br>
> > ><br>> > > -------------------------------------------------------------------------<br>> > >----- _______________________________________________<br>> > > gradsusr mailing list<br>
> > > <a href="mailto:gradsusr@gradsusr.org" target="_blank">gradsusr@gradsusr.org</a><br>> > > <a href="http://gradsusr.org/mailman/listinfo/gradsusr" target="_blank">http://gradsusr.org/mailman/listinfo/gradsusr</a><br>
> > <br>> > --<br>> > Jennifer M. Adams<br>> > Center for Ocean-Land-Atmosphere Studies (COLA)<br>> > 111 Research Hall, Mail Stop 2B3<br>> > George Mason University<br>> > 4400 University Drive<br>
> > Fairfax, VA 22030<br>> > <br>> <br>> <br>> <br>> ------------------------------<br>> <br>> Message: 3<br>> Date: Thu, 19 Sep 2013 15:51:39 -0700<br>> From: Phil Klotzbach <<a href="mailto:philk@atmos.colostate.edu" target="_blank">philk@atmos.colostate.edu</a>><br>
> Subject: [gradsusr] Problem Solved - Difference Files<br>> To: <a href="mailto:gradsusr@gradsusr.org" target="_blank">gradsusr@gradsusr.org</a><br>> Message-ID: <<a href="mailto:523B7FFB.3070307@atmos.colostate.edu" target="_blank">523B7FFB.3070307@atmos.colostate.edu</a>><br>
> Content-Type: text/plain; charset="iso-8859-1"<br>> <br>> Hi everyone,<br>> <br>> Thanks for all of your very helpful comments. I solved the problem by <br>> concatenating the two files together using ncrcat (<a href="http://uwnd.2013.nc" target="_blank">uwnd.2013.nc</a> and <br>
> <a href="http://uwnd.ltm.nc" target="_blank">uwnd.ltm.nc</a>). Then, I set the dimensions and did the following difference:<br>> <br>> define uwnd2 = aave(uwnd-(uwnd(t+258), lon=-70, lon=-20, lat=0, lat=30)<br>
> <br>> <br>> I did 258 days because that's how many days were available for <br>> computation in 2013 so far.<br>> <br>> <br>> Thanks again for the comments. This list is an invaluable resource!<br>
> <br>> Phil<br>> <br>> <br>> -- <br>> ----------------------------------------------------<br>> Phil Klotzbach, Ph.D.<br>> Research Scientist<br>> Department of Atmospheric Science<br>> Colorado State University<br>
> Email: <a href="mailto:philk@atmos.colostate.edu" target="_blank">philk@atmos.colostate.edu</a><br>> ----------------------------------------------------<br>> <br>> -------------- next part --------------<br>
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> <br>> ------------------------------<br>> <br>> _______________________________________________<br>> gradsusr mailing list<br>> <a href="mailto:gradsusr@gradsusr.org" target="_blank">gradsusr@gradsusr.org</a><br>
> <a href="http://gradsusr.org/mailman/listinfo/gradsusr" target="_blank">http://gradsusr.org/mailman/listinfo/gradsusr</a><br>> <br>> <br>> End of gradsusr Digest, Vol 43, Issue 47<br>> ****************************************<br>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Jeff Duda<br>Graduate research assistant<br>University of Oklahoma School of Meteorology<br>Center for Analysis and Prediction of Storms<br>
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