Standard deviation map of the chromosphere (a, b), transition region (c), and the corona (d). The maps are computed for the time range between 00:32 to 00:52 UT on 30 March 2022. The white contour presents the ROI-A that spatially corresponds to the coronal upflow region with a velocity v < −5 km s⁻¹. The blue contour in panel c shows a strong standard deviation of AIA 193Å intensity of 20 DN/s (panel d).