Surface weather analysis isotherms (lines of equal temperature), and isotachs (lines of equal wind speed) are drawn. The abstract weather symbols were devised to take up the least room possible on weather maps. A synoptic scale feature is one whose dimensions are large in scale, more than several hundred kilometers in length. Migratory pressure systems and frontal zones exist on this scale. Centers of surface high- and low-pressure areas that are found within closed isobars on a surface weather analysis are the absolute maxima and minima in the pressure field, and can tell a user in a glance what the general weather is
Points classification in the Vuelta a España stage and the rider with the most points wears the jersey. This system unlike the Tour de France & the Giro d'Italia, gives equal amount of points in the mountains compared to the flats, this paired with the high number of summit finishes at the Vuelta means there’s a correlation between the overall classification and the points jersey. A good example from 2012 when sprinter John Degenkolb won five stages but only finished fourth in the points competition with Alejandro Valverde well ahead. Points classification in the Vuelta a España The points classification in the Vuelta a España is a