The Earth Science Project Office (ESPO) Exchange Data Archives contain measurements and related information pertaining to NASA aircraft field experiments. These studies concentrated on the chemistry and physics of the upper troposphere and lower stratosphere, and in most cases they were managed by the ESPO.
The archives offer a means by which investigators can exchange their measurements and model results with other experimental participants in a timely way, and update the on-line information if necessary. A major objective of this process is to facilitate the inter-comparison and interpretation of the experimental datasets.
There is a separate archive account for each experiment, and all participants share that account to submit and retrieve files to and from the archive. Initially, each archive account is password protected and access is restricted to participants of the experiment. Each archive account can be accessed via ftp logins using the appropriate user name and login password:
ftp espoarchive.nasa.gov
Name (...): {enter the archive account name}
Password: {enter appropriate login password}
Most archives are opened to the public after a predetermined
length of time, and files can be retrieved from the public
archives via anonymous ftp:
ftp espoarchive.nasa.gov
Name (...): anonymous
Password: {enter your email address}
ftp> cd archive
If a particular archive is inaccessible via anonymous ftp then it
is not a public archive, and a login password is required to retrieve
files from that archive. A login password is always required to
submit
files to an archive.
Contact the curator of this site if you need the login information for an archive account.
You can also browse the archives with your web browser, and additional methods for accessing the archives with your web browser are described in the Downloading page.
Each archive account includes the following directories:
All of the archived data and image files use a special naming convention and are written in special file formats, and those conventions are strictly enforced. Descriptions of the file naming convention and formats can be found in the File Names and File Formats pages.
With the exception of red error messages, your browser's default settings are used in all interactions with these pages. So if you prefer different fonts, font sizes, colors, etc., you can modify them.
Some familiarity with the instruments, measurements, and derived quantities is required to locate and interpret the data. Information on the instruments and theoretical investigations, and their respective Principal Investigators (PI), can be found in the appropriate mission handbook and under the home page for each experiment. Many of the data file headers also contain contact information. If you intend to use a particular dataset, you are strongly encouraged to contact the appropriate PI to learn the limitations and suitability of those data for your application.
We also maintain a few mirrors of archives from other experiments with which we have collaboration agreements. Access to these mirrors is restricted to participants of specific experiments. Contact the curator of this site if you need access to an archive mirror.
This site also includes mirrors of CD_ROM archives of data from STEP and AAOE; both missions were conducted in 1987. These mirrors are just a convenient method of distributing those data until we have the time to reformat the files and include them in the ESPO archives.
Since the archive mirrors use different file naming conventions and, in some cases, different file formats, they are treated differently than the ESPO archives. So there are fewer operations with which to examine the content of the mirrors. Nonetheless, you can still access them via ftp or your web browser.
Curator: Steven Gaines - NASA Official: Mike Craig Updated: 2004-10-07