Supplementary material to "Moisture transport axes: a unifying definition for monsoon air streams, atmospheric rivers, and warm moist intrusions"

1 Moisture transport axes based on normalized input dataThe frequent detection of moisture transport axes at low latitudes (cf.climatology in Fig. 3 in the main manuscript) indicates that also many less impactful events, such as seasonal or even stationary features of the circulation, are picked up.For some applications, however, it might be desirable to limit detections to the most pronounced moisture filaments at low latitudes.In the following, we explore the potential benefits of normalizing the IVT input fields to achieve more selective detections at low latitudes.For this analysis, we normalized the IVT by the annual and zonal mean total column water vapor IWV (black dashed lines in Fig. S1 show resulting detections, climatology in Fig. S2).For brevity, we refer to these as "normalized detections" in the following, in contrast to the "non-normalized" detections discussed in the main manuscript.Given that the non-normalized detections are tuned with a particular focus on the storm tracks, we aim to keep detections in these regions unchanged by the normalization.