Changes in cloud water and ice Max amount of cloud water Appearance of cloud ice Max amount of cloud ice Disappearance of cloud water Min amount of cloud ice Atmospheric level (in km) 1-1.5 2.5-3 6-8 8< 18 Areal average (gm-3) 0.0008 0.0001 0.0004 0.000 0.0002

Table 2: Physical changes in cloud water and ice over Iran, estimated by TRMM-3A12 in different atmospheric levels (measured in km) during 1998-2005.