To make it live longer you increase its particle's lifetime.
you increase its particle's lifetime.
datablock ParticleData(NormCloud1Particle){ dragCoefficient = 2; gravityCoefficient = 0; inheritedVelFactor = 0; constantAcceleration = 2; lifetimeMS = 40000; lifetimeVarianceMS = 1000; textureName = "base/data/particles/cloud"; spinSpeed = 0.0; spinRandomMin = -10.0; spinRandomMax = 10.0; colors[0] = "0.6 0.6 0.7 0.0"; colors[1] = "0.8 0.8 0.8 0.8"; colors[2] = "0.7 0.7 0.7 0.7"; colors[3] = "0.4 0.4 0.5 0.0"; sizes[0] = 10.15; sizes[1] = 10.10; sizes[2] = 10.15; sizes[3] = 10.10; times[0] = 0.0; times[1] = 0.1; times[2] = 0.9; times[3] = 1.0; useInvAlpha = false; windCoefficient = 0.0;};datablock ParticleEmitterData(NormCloudAEffectEmitter){ ejectionPeriodMS = 200; periodVarianceMS = 13; ejectionVelocity = 1; velocityVariance = 0.0; ejectionOffset = 35.0; thetaMin = 0; thetaMax = 0.01; phiReferenceVel = 0; phiVariance = 360; overrideAdvance = false; orientParticles = false; particles = "NormCloud1Particle"; useEmitterColors = True; uiName = "W Clouds Heavy (midair)";};