Meteor3/TOMS August 2006 These data files are Version 8 Meteor-3/TOMS data, deriving from the Meteor-3/TOMS instrument launched aboard a Russian rocket (Cyclone) and spacecraft (Meteor-3) on August 15, 1991 from Plesetsk, Russia. The Meteor-3 orbit drifts with respect to the sun angle with a period of 212 days. Complete global measurements were made of ozone except when the orbit was near the day-night terminator. Under these conditions, the TOMS instrument was not able to view one of the hemispheres for a period of up to 3 weeks. This differed from the Nimbus-7/TOMS ozone data obtained in a near-noon sun synchronous orbit (10:45 equator crossing time). Information files: METEOR3_USERGUIDE.PDF Contains details about the Meteor3/TOMS science algorithms, data products and data file formats. PDF files can be read with Adobe Acrobat software, which may be obtained free from http://www.adobe.com. COMMENTS.TXT This is a brief newsletter concerning the data files. COMMENTS.TXT is for the user's information only, and may contain items that require revision in the future. Data availability: Version 8 gridded ozone and reflectivity data are available from the Goddard DAAC (http://daac.gsfc.nasa.gov) in HDF format, and are available in ASCII format and image display via this anonymous ftp site. Additional subsets of data available at this site are shown below in the "Data files" directory paths. Data files: data/ozone/Yyyyy, yyyy=1991-1994 data/reflectivity/Yyyy data/overpass data/zonal_means Image files: images/global/Yyyyy, ozone, yyyy=1991-1994 images/npole/Yyyyy, ozone images/spole/Yyyyy, ozone images/reflectivity/Yyyyy For more information about these files see the 1README text in the data and images subdirectories. If these data are downloaded and used in publication, please give proper credit to the NASA/GSFC TOMS Ozone Processing Team. For more information concerning Meteor3 data files, contact Dr. Jay R. Herman Code 613.3 NASA/Goddard Space Flight Center Greenbelt, MD 20771 herman@tparty.gsfc.nasa.gov