The Environmental Technology Laboratory ray tracing anonymous ftp site is now at ftp://FTP.ETL.NOAA.GOV/et1/raytracing
(formerly ftp://FTP.ETL.NOAA.GOV/pub/et1/raytracing)
(formerly ftp://WWW1.ETL.NOAA.GOV/pub/raytracing)
(formerly ftp://POOH.ETL.NOAA.GOV/pub/et1/raytracing).

Our ray tracing programs are explained more fully in our ray tracing publications. Additional documentation is available at http://cires.colorado.edu/~mjones/raytracing/, which also gives updated versions of some of the subroutines.

Check the dates on the programs and subprograms on all web sites to see which versions are the latest.

Notice that computer program corrections indicated in errata have not been made to any of the ray tracing programs on the NOAA web site.

The NOAA website for pcharpo was ftp://FTP.ETL.NOAA.GOV/et1/raytracing/pcharpo
The CIRES website for pcharpo is http://cires.colorado.edu/~mjones/raytracing/pcharpo

The NOAA website for harpo is ftp://FTP.ETL.NOAA.GOV/et1/raytracing/harpo
The CIRES website for harpo is http://cires.colorado.edu/~mjones/raytracing/harpo

The NOAA website for harpo errata is ftp://FTP.ETL.NOAA.GOV/et1/raytracing/harpo/errata
The CIRES website for harpo errata is http://cires.colorado.edu/~mjones/raytracing/harpo/errata.pdf

The NOAA website for nharpo is ftp://FTP.ETL.NOAA.GOV/et1/raytracing/nharpo
The CIRES website for nharpo is http://cires.colorado.edu/~mjones/raytracing/nharpo

The NOAA website for 3d-iono.75 is ftp://FTP.ETL.NOAA.GOV/et1/raytracing/3d-iono.75
The CIRES website for 3d-iono.75 is http://cires.colorado.edu/~mjones/raytracing/3d-iono.75

The NOAA website for 3d-iono.75 errata is ftp://FTP.ETL.NOAA.GOV/et1/raytracing/3d-iono.75/errata
The CIRES website for 3d-iono.75 errata is http://cires.colorado.edu/~mjones/raytracing/3d-iono.75/errata

The CIRES website for ionospheric_models is http://cires.colorado.edu/~mjones/raytracing/ionospheric_models

The CIRES website for ray tracing in complex space is http://cires.colorado.edu/~mjones/raytracing/in_complex_space

The NOAA website for harpa.103 is ftp://FTP.ETL.NOAA.GOV/et1/raytracing/harpa.103
The CIRES website for harpa.103 is http://cires.colorado.edu/~mjones/raytracing/harpa.103

The NOAA website for harpa.103 errata is ftp://FTP.ETL.NOAA.GOV/et1/raytracing/harpa.103/errata
The CIRES website for harpa.103 errata is http://cires.colorado.edu/~mjones/raytracing/harpa.103/errata

The NOAA website for harpa is ftp://FTP.ETL.NOAA.GOV/et1/raytracing/harpa
The CIRES website for harpa is http://cires.colorado.edu/~mjones/raytracing/harpa

The CIRES website for harpa errata is http://cires.colorado.edu/~mjones/raytracing/harpa/errata.pdf

The NOAA website for models is ftp://FTP.ETL.NOAA.GOV/et1/raytracing/models
The CIRES website for models is http://cires.colorado.edu/~mjones/raytracing/models

The CIRES website for atmospheric_models is http://cires.colorado.edu/~mjones/raytracing/atmospheric_models

The NOAA website for eigen is ftp://FTP.ETL.NOAA.GOV/et1/raytracing/eigen
The CIRES website for eigen is http://cires.colorado.edu/~mjones/raytracing/eigen

The NOAA website for profile is ftp://FTP.ETL.NOAA.GOV/et1/raytracing/profile
The CIRES website for profile is http://cires.colorado.edu/~mjones/raytracing/profile

The NOAA website for psgraph is ftp://FTP.ETL.NOAA.GOV/et1/raytracing/psgraph
The CIRES website for psgraph is http://cires.colorado.edu/~mjones/raytracing/psgraph

The NOAA website for conplt is ftp://FTP.ETL.NOAA.GOV/et1/raytracing/conplt
The CIRES website for conplt is http://cires.colorado.edu/~mjones/raytracing/conplt

The NOAA website for the HARPO report was http://WWW.ETL.NOAA.GOV/et1/infrasound/pubs/harpo.pdf
The NOAA website for the HARPO report is http://www.esrl.noaa.gov/psd/programs/infrasound/pubs/harpo.pdf
The CIRES website for the HARPO report is http://cires.colorado.edu/~mjones/raytracing/harpo/HARPO.PDF

The NOAA website for the HARPA report was http://WWW.ETL.NOAA.GOV/et1/infrasound/pubs/harpa.pdf
The NOAA website for the HARPA report is http://www.esrl.noaa.gov/psd/programs/infrasound/pubs/harpa.pdf
The CIRES website for the HARPA report is http://cires.colorado.edu/~mjones/raytracing/harpa/HARPA.PDF

















For more information about the ray tracing programs or to report difficulty in accessing the cires.colorado.edu web site, contact Michael Jones at 303-492-3845. To report difficulty in accessing the FTP.ETL.NOAA.GOV/et1/ web site, contact Rusty Jesse at 303-497-5863.