nimbostratusnitratenitrificationnitrogennitrogen oxidenival abrationno flow boundaryno tillagenocturnalnocturnal minimum temperaturenodal profilenodenominal diameternomographnon capillary poresnon capillary porositynon divergencenon divergent levelnon eroding velocitynon govermental organizationnon graded sedimentnon sequiturnon settleable solidsnon silting velocitynon singularnoncohesive soilnoncurvilinear flownonerodible channelnonerodible velocitynonhygroscopic particlesnonlinearnonlinear alignmentnonlinear alignment channelnonlinear instabilitynonparametric testnonprismatic channelnonsignificantnonstopnonsupportnonsustaining slopenonuniform flownonuniform unsteady flownonviscousnormalnormal barometernormal depthnormal dischargenormal erosionnormal heightnormal laps rate