In recent years. it has become increasingly clear that space weather disturbances can be triggered by transient upstream mesoscale structures (TUMS). independently of the occurrence of large-scale solar wind (SW) structures. such as interplanetary coronal mass ejections and stream interaction regions. https://www.ngetikin.com/super-value-1-2-in-Tobacco-Road-Acacia-Distressed-Engineered-Hardwood-Flooring-4-8-in-Wide-Sample-quick-super/