Contour line future weather patterns. Isobars are commonly used in television weather reporting. Isallobars are lines joining points of equal pressure change during a specific time interval. These can be divided into "anallobars", lines joining points of equal pressure increase during a specific time interval, and "katallobars", lines joining points of equal pressure decrease. In general, weather systems move along an axis joining high and low isallobaric centers. Isallobaric gradients are important components of the wind as they increase or decrease the geostrophic wind. An isopycnal is a line of constant density. An "isoheight" or "isohypse" is a line of constant geopotential
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