Brent: I'm sorry this reply has take so long, you've been very patient. You can glean some information and sample results from the tgcm models at the URL: http://www.hao.ucar.edu/public/research/tiso/tgcm/tgcm.html The horizontal resolution of the models is 5 degrees latitude (-87.5 to +87.5) by 5 degrees longitude (-180W to +180E). The vertical resolution is a log pressure grid (ln(p0/p)), which for the time-gcm goes from -17 at the bottom (~30km) to +5 at the top (about 500km +/- solar conditions). The vertical resolution is coarse for your area of interest, i.e., only about 5 grid points from 30 to 50km. At least for now, Roble will continue to run the model itself, and I will provide you with some of the results you need as a first cut. Later, I may provide you with post-processors you can run to get further results yourself. I have made some vertical profiles of TN (neutral temperature) and RHO (total density, i.e., O2+O+N2) at the grid point nearest Arecibo from time-gcm results for equinox and solstice conditions. I have also made vertical profiles of NaS. These are just samples for you to look at -- more can follow later, 2d contours, time-dependent results, etc. There are 2 sets of TN and RHO profiles, one at the full vertical resolution of the model (on the ZP log pressure scale), and another set interpolated from pressure to 30-50km, at every km. I have put several files in anonymous ftp on the machine hao.ucar.edu in the directory /pub/foster/bgrime, as given below. The .ps files are postscript xy line plots, and the .dat files are ascii data corresponding to the xy plots. The files (in /pub/foster/bgrime) are: total 2624 -rw-r--r-- 1 foster ftp 2856 Oct 3 10:02 v30-50_decsol.dat -rw-r--r-- 1 foster ftp 187998 Oct 3 10:02 v30-50_decsol.ps -rw-r--r-- 1 foster ftp 2856 Oct 3 10:02 v30-50_eq.dat -rw-r--r-- 1 foster ftp 184756 Oct 3 10:02 v30-50_eq.ps -rw-r--r-- 1 foster ftp 2856 Oct 3 10:02 v30-50_junsol.dat -rw-r--r-- 1 foster ftp 182866 Oct 3 10:02 v30-50_junsol.ps -rw-r--r-- 1 foster ftp 4752 Oct 3 10:02 vzp_decsol.dat -rw-r--r-- 1 foster ftp 180643 Oct 3 10:02 vzp_decsol.ps -rw-r--r-- 1 foster ftp 4752 Oct 3 10:02 vzp_eq.dat -rw-r--r-- 1 foster ftp 183184 Oct 3 10:02 vzp_eq.ps -rw-r--r-- 1 foster ftp 4752 Oct 3 10:02 vzp_junsol.dat -rw-r--r-- 1 foster ftp 182177 Oct 3 10:02 vzp_junsol.ps -rw-r--r-- 1 foster ftp 3136 Oct 3 10:02 vzp_na_eq.dat -rw-r--r-- 1 foster ftp 65318 Oct 3 10:02 vzp_na_eq.ps -rw-r--r-- 1 foster ftp 3136 Oct 3 10:02 vzp_na_sol.dat -rw-r--r-- 1 foster ftp 65093 Oct 3 10:02 vzp_na_sol.ps The v30-50* files are at the 30-50km scale, and the vzp* files are at the full zp pressure scale of the model. I did not include Na at 30-50km, as it is negligible at those heights. The *eq* files are at equinox conditions, the *decsol* files are December solstice, and the *junsol* files are June solstice. Note you may want to replot RHO and NaS on a log10 scale. You should be able to ftp mget all these files in ascii mode. Please let me know if you need any help with these files. I have a small fortran program that reads the .dat files, but they are pretty simple to read (4 80-char header lines precede each block of data). --Ben ----------------------------------------------------------------------- Ben Foster High Altitude Observatory (HAO) foster@ncar.ucar.edu phone: 303-497-1595 fax: 303-497-1589 Nat. Center for Atmos. Res. P.O. Box 3000 Boulder CO 80307 USA ----------------------------------------------------------------------- > Mr. Foster, > > Hello, I am a student working with Tim Kane at Penn State University. I > am working with Na density measurements are Arecibo Observatory. Dr. > Kane has recently spoken with Ray Roble about beginning some long term > collaborations. Right now, we need some TIME-GCM density models for > Arecibo. We would like to get an average for each month of the year. > This should be accurate enough for our scaling. Dr. Kane was talking to > me about the different ways Ray Roble suggested to do this. I guess the > first step is to have someone simply give us the models. The other > consideration for long term will be getting an account on the NCAR > machine so we can get the information from the history files. > > I guess I have a question. What type of vertical resolution is possible > with the models? Is there an option in this area? Ideally, the range > resolution would match our resolution of 150m, but we can adjust to > whatever.... > > In summary we are looking for atmospheric densities for > > Arecibo Observtory 18.3N 66.5W > 12 monthly average models > Altitude from 30-50km > ideal range resolution=150m > > Is there any other information that you need? > > Thank you very much for your help, > Brent Grime