Frequently Asked Questions

Data-related questions:

Which sites/locations do these data apply to?

The TSS v2 houses monitoring data from all IMPROVE sites across the country. However, the analysis for various metrics, including the Most Improved Days (MID) metric, follows a calculation methodology recommended by the WESTAR/WRAP Regional Haze Planning Work Group’s “Monitoring Data / Glide Path” Subcommittee. (Note that, while this methodology is recommended, some states may diverge from this methodology for site-specific or state-specific reasons.) The methodology for analyzing monitoring data may vary from region to region. Similarly, modeling data is specific to the western region, i.e., the WRAP region.

Another question about the data?

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Website-related questions:

Do I need to login?

Not always. There are resources and pages on the website that do not require a login to access, but many others that do. Most of the data-intensive tools and resources will require you to login because we need to protect these pages from hackers, spammers, and bots - leaving them "wide open" to the general public can significantly affect the performance of the site for regular users, so we choose to protect many of these pages with a login requirement. If you click on a link or visit a page that requires a login, you will simply be redirected to the Login page.

Another question about the website?

Modified: 5/17/2022 10:28:55 AM