Sorry, I haven&#x27;t had a chance to review the article yet, but hasn&#x27;t PressureNet[1] been crowdsourcing weather data for years now? I know I&#x27;ve been silently contributing ever since the Galaxy Nexus was the new phone on the block with it&#x27;s fancy barometer.<p>[1]<a href="https:&#x2F;&#x2F;play.google.com&#x2F;store&#x2F;apps&#x2F;details?id=ca.cumulonimbus.barometernetwork" rel="nofollow">https:&#x2F;&#x2F;play.google.com&#x2F;store&#x2F;apps&#x2F;details?id=ca.cumulonimbu...</a>