The NmF2 and hmF2 ionospheric parameter affects the radio propagation. Characterization of these parameters is useful for proper communication and navigation applications. In this pa- per the temporal and spatial characterization of NmF2 and hmF2 ionospheric parameters from Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) Radio Occultation (RO) measurements in the 2013 have been done.These parameters obtained in the latitude and longitude ranges of -90 to 90 N and -180 to 180 E, respectively. The results revealed that, comparing the analyzed data during the three geomagnetic storm and two quiet days of the same months, the NmF2 and hmF2 values are significantly enhanced during storm periods. It is found that in the month of December and February , the maximum and minimum values of NmF2 and hmF2 were observed, respectively. The seasonal variations observed that the maximum and minimum mean measured values of NmF2 is in March equinox and December solstice, respectively where as the hmF2 is maximum in solstice and minimum in equinox.