Comprehensive Large Array-data Stewardship System (CLASS) Web Site Tutorial Visit CLASS Site at

The Comprehensive Large Array-data Stewardship System (CLASS) archives and distributes NOAA’s environmental data and derived data products.

Duplicate CLASS sites at Suitland, MD and Asheville, NC preserve and distribute: POES/DMSP GOES Sea Surface Temperature Aerosol Optical Thickness Ocean Color Pathfinder

Data Archiving Robotic storage of data and ancillary files On-line inventory catalog Data preservation services Metadata collection

Data Access Catalog search Browse imagery/data visualization Immediate access to derived product data On-line ordering and delivery Subscription services Bulk data distribution

Access CLASS data at

Click here to register

Enter required fields and Click the Register button

Easy access to Help Pages

Help Pages contain detailed information on CLASS

Returning users log on via Login link

Enter your CLASS user name and password

Easy access to update your User Profile

Edit Profile and push Update button to save

To search the archive, choose a product from the pull-down list and select GO

Establish search criteria, such as, data type, temporal range, and geographic region, then push the Search button Or push here to Search by Dataset Name Product information, FGDC compliant metadata, and links to documentation

Enter partial or full dataset name and push the Search button.

Summary list of data matching your search criteria

Click to Access the summary map

Summary list and map are color coordinated

Click to view dataset details

Check to add to your shopping cart Data set detailed results Navigate to next detailed results

Click to view interactive map Click for full size browse image

Navigate to shopping cart Check box to add to cart

You must be logged in or you may register to order data

Specify data extraction parameters including digital signature if required and commit changes. Push button to place order

Order confirmation contains order number and address

Easy access to Order Query

Order Status

Easy access to change user preferences

Specify your data extraction and delivery preferences then push Update to save User preferences page

Easy access to Download Keys Digital signature is an electronic signature that can be used to authenticate the identity of the sender of a message or the signer of a document. Download the keys and select Yes to have Digital Signatures added to your data

Select product to search and press go

Establish search criteria, such as, data type, temporal range, and geographic region, then push the Search button Product information and links to documentation are available on Search pages

Navigate between search results

Click to view details

GOES detailed results page. Click thumbnails for browse images

From the search page Save search criteria

Search criteria are saved to disk and can be uploaded

Upload saved search criteria

Push Browse button to find saved search criteria

Easy access to Subscription services

Select product to establish a subscription

Establish subscription criteria. Push delivery button for other options

Specify delivery options and save

Manage existing subscriptions

Useful Links

Easy access to contact User Services