Last week, the daily feature presented a time series of soil moisture from a ISU Soil Moisture Network site near Ames. The chart showed the progress of the big Christmas rainfall infiltrating the ground and denoted that the water had yet to reach the sensor at 30 inch depth. Today's featured chart checks in on that progress with another soil moisture sensor near Ames, this one is buried at a deeper depth with its first sensor at 14 inches. It shows a similar story with the rainfall not enough to improve soil moisture at deeper depths, but you can see a very slow moistening happening at 24 inches vs a slow drying at shallower depths as soil water very slowly works its way downward. The response at the next depth of 28 inches is even more muted. It is fascinating to watch the soil moisture with these sensors.

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Tags:   soilmoisture