Dry Intrusion Index and Its Physical Interpretation
干侵入强度指数的表征及其物理意义

Based onthe characteristics,mechanisms and impacts of the dry intrusion,a dry intrusion index(DII) is defined to characterize the dry intrusionintensity and its physical interpretation is explored by a case study as well.It is found that DIIis related to the horizontal temperature advection,the potential vorticity and pseudo-equivalent potential temperature.The positive DII indicates that there exists the dry intrusionprocess.And the greater the positive DIIis,the stronger the dry intrusion exists.Thus,this...