k factorkamekamsinkanatkaraburankarman numberkarmen streetkarmen vortex trailkarstkarst regionkatabatic windkatamirphic zonekelvin temperature scalekelvin tubekew barometerkey terrancekilling frostkinematic viscositykinematic wave approximationkinetic energykleitz seddon principleknoll springkopens climatic classificationkrigingkurtosiskutters formulakyoto protocol