Naters-Top (Irrigated)
Left: Drought signals per site are displayed for up to three soil layers as soil water potential (three stacks at the bottom), for all trees pooled and for each species pooled as normalized tree water deficit (TWD_norm, stacks in the middle), and for the air as vapor pressure deficit (VPD, top stack). The colors indicate the intensity of drought stress on the current day compared to historical data, ranging from dark blue (no drought stress) to red (high drought stress). The numbers indicate the measured values in the respective unit.
Right: Seasonal progression of average soil water potential (SWP, bottom) and tree water deficit (TWD_norm, middle). Color coding as for the stacks. The upper time series shows the average cumulative stem growth of the site. The color coding ranges from yellow (no/low growth) to dark green (high growth) and indicates the relative growth performance compared to historical data.
Data source: TreeNet, automatic data analysis with filtered data set.
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