Drupal module to generate compressed xml sitemap

Question

Is there any Drupal module which can generate compressed xml sitemap like sitemap.xml.gz? The problem is I have a site with a lot of pages and the generated sitemap is very big (more than 1 MB). I have "404 not found" errors in google webmaster tools for the sitemap, but when I open the address mysite.com/sitemap.xml the sitemap is displayed after more than 5 seconds. When I test my sitemap with google PageSpeed Insights it tells me to activate compression and I will reduce the data transfer for this file with 92%. I activated compression on Nginx and now it is compressing everything but the sitemap. Now I am searching for a module generating compressed sitemap. I am usung Drupal 7 with Nginx and xmlsitemap module for generating sitemap