Spicules and downflows in the solar chromosphere

High-speed downflows have been observed in the solar transition region (TR) and lower corona for many decades. Despite their abundance, it has hard to find signatures of such chromosphere. In this work, we target an enhanced network that shows ample occurrences rapid spicular \halpha\ spectral line could potentially be linked high-speed TR downflowing counterparts. We used $k$-means algorithm classify profiles on-disk spicules \halpha{} \cak{} data from Swedish 1-m Solar Telescope (SST) employed automated detection method based on advanced morphological image processing operations detect features, conjunction with blue-shifted red-shifted excursions (RBEs RREs). report existence a new category RREs (termed as RRE) first time that, contrary earlier interpretation, are associated chromospheric field-aligned moving towards strong magnetic field regions. Statistical analysis performed nearly 20,000 RBEs 15,000 (including counterparts), detected our 97~min long dataset, very similar except oppositely directed plane-of-sky motion. Furthermore, also RBEs, can represented by wide range varying Doppler offsets, core widths, both along perpendicular spicule axis, causes them multiple substructures evolve together. speculate these plasma well counterparts commonly downflows.