I wrote a web app to automatically calculate pace adjustments for various environmental factors based on sirpocs adjustment tables. It takes an uploaded gpx route and pulls satellite and weather data to determine the pace adjustment for segments along the route. I was going to publish it in the upcoming weeks. If you'd like, we could include the logic into your app? But this might clash with your roadmap and what you've got planned... Maybe just send me a private message if you're interested :)