This directory holds the detailed catalogs. Within each catalog, fourteen items (with standardized subheadings) give information on the type of data, spatial and temporal characteristics, instrument description, data processing sequence, quality assessment, contacts for data production, output products and availability, data access, archive information, references, related data sets, summary/sample, and a final item for notes. Much of the information was provided by the data producers; however, NCDS staff members supplemented this information and standarized its presentation. As a result, specific details can be readily located through the table of contents. In addition to the detailed catalogs directly linked with the data sets held on the CD-ROM, ancillary catalogs which are closely related to the resulting products are included. These catalogs give descriptions of the Level I products from which many of the data sets are derived. They may be read directly from this directory and include: ERB: Nimbus-7 Earth Radiation Budget (see ERB_SOLI.DET) ERBE: Earth Radiation Budget Experiment (see ERBE.DET) AVHRR: Advanced Very High Resolution Radiometer (see AVHRR.DET) SAGEI: Stratospheric Aerosol and Gas Experiment I (see AEM2SAG1.DET) SAGEII: Stratospheric Aerosol and Gas Experiment II (see ERBSAGE2.DET) TOVSHIRS: TIROS Operational Vertical Sounder High-resolution Infrared Radiometer (see TOVSHIRS.DET) TOVSMSU: TIROS Operational Vertical Sounder Microwave Sounding Unit (see TOVSMSU.DET) TOVSSSU: TIROS Operational Vertical Sounder Stratospheric Sounding Unit (see TOVSSSU.DET) VISSR: Visible Infrared Spin Scan Radiometer (see VISSR.DET) VAS: VISSR Atmospheric Sounder (see VAS.DET)