I wouldn’t want to call this feature creep, because I have been wanting to enable data smoothing in the web app from the beginning. I was even using it in Excel, before I made it into a web app. Data smoothing is helpful because it removes noise, making the picture more clear, making it easier to see climate trends. I really like the effect that it has on contour maps, making them more continuous, so that you can see shapes in the picture. As with many other data visualization tools, noise reduction can be used improperly in order to mislead people. Don’t do it!
Here is an example using temperature maximums from the Guadeloupe islands in the Carribean. With a little bit of noise reduction applied, the shapes in the image are much more apparent. Head on over to the app to view the interactive version of this chart.