[PPS07-P03] Zonal correlation among dust, water ice clouds and temperature in the Marian atmosphere observed by MRO-MCS
Keywords:Mars, dust, water ice clouds
Our previous analysis showed that the water ice cloud opacity around Hellas Planitia (30-60S, 50-100E) decreased during late autumn and early spring in the southern hemisphere (Ls=70-110 deg), and temperature and the dust opacity in the same region increased simultaneously: a negative correlation between dust and water ice clouds was found. We interpreted the results as the heatup which was caused by dust and the subsequent sublimation of water ice clouds. However, we have also found a positive correlation between dust and water ice clouds in a different region, which suggests that the increase of dust induced the increase of condensation nucleus and promoted the formation of water ice clouds in that area.