<![CDATA[Strange SO2 profiles]]>I have been monitoring SO2 pollution maps in our area for some time now. From time to time the SO2 values completely change from one hour to the next: i.e. see below! Within an hour the average value across the area goes from 25-30 mg/m2 at 3pm to < 1mg/m2 at 4pm and then the next hour it is back to 25-30 mg/m2 at 5pm. See the sequence below.
https://drive.google.com/file/d/1KJsEqdpGoAyzcEspuHHxww-OH2jkOmS8/view?usp=sharing
https://drive.google.com/file/d/1riRqlHlVe4S6PcNRdyQgJ06-uQ0MWWnD/view?usp=sharing
https://drive.google.com/file/d/1SIk0YQMnxRleGfQSJKVfWsDsDZdbqxQO/view?usp=sharing
How is this possible? This seems to happen regularly in CAMS forecasting?
Why would this happen?
Any thoughts?

]]>https://community.windy.com/topic/41941/strange-so2-profilesRSS for NodeFri, 08 May 2026 09:12:14 GMTWed, 24 Sep 2025 16:30:24 GMT60<![CDATA[Reply to Strange SO2 profiles on Thu, 25 Sep 2025 14:21:37 GMT]]>Thank you for that. Now I'll be on the lookout for these glitches.

]]>https://community.windy.com/post/219071https://community.windy.com/post/219071Thu, 25 Sep 2025 14:21:37 GMT<![CDATA[Reply to Strange SO2 profiles on Thu, 25 Sep 2025 09:15:52 GMT]]>@dmbakker
Your second screenshot is not showing the SO2 layer. These are the colors of the Wind layer.
But I don’t know why you get a wrong legend in the bottom right corner of your screen (CAMS model and SO2 color scale). So there is a glitch.
The weather picker is not displayed. So we don’t know what it would display.

]]>https://community.windy.com/post/219057https://community.windy.com/post/219057Thu, 25 Sep 2025 09:15:52 GMT<![CDATA[Reply to Strange SO2 profiles on Thu, 25 Sep 2025 07:57:51 GMT]]>screenshot_SO2-2024-10-15 15-39-42.300304.png screenshot_SO2-2024-10-15 16-41-46.889332.png screenshot_SO2-2024-10-15 17-43-41.131685.png

Thank you for your reply. I have uploaded the images.

]]>https://community.windy.com/post/219053https://community.windy.com/post/219053Thu, 25 Sep 2025 07:57:51 GMT<![CDATA[Reply to Strange SO2 profiles on Thu, 25 Sep 2025 07:05:37 GMT]]>@dmbakker Unfortunately, I cannot access those images. However, we get this data from the provider (forecast model) and we cannot do much with it.

]]>https://community.windy.com/post/219049https://community.windy.com/post/219049Thu, 25 Sep 2025 07:05:37 GMT