Yes, you can submit multiple SPARCS data requests, and the SPARCS program will treat them as related applications, tracking the history and data you already possess. However, each approval has a defined expiration date, after which you would need to submit a new request.* The SPARCS program manages this process to ensure appropriate use and prevent unauthorized access to the data.
If you wish to extend your approval for an additional year, you must file an extension request before the expiration date. For more information, see: How do I extend my data lease?