[P-PS02_28PO1] Mars

[PPS02-P01] 火星探査機MRO搭載MCSにより観測された火星大気ダストと水氷雲の子午面分布の複数年解析

*野口 克行¹、今江 香織¹、川西 麻衣¹ (1.奈良女子大学)

キーワード：火星, MRO, MCS, ダスト, 水氷雲

We investigated the interannual variability of the meridional distributions of dust and clouds in the Martian atmosphere by using Mars Reconnaissance Orbiter Mars Climate Sounder (MRO-MCS) measurements. As the previous analyses did not consider measurement errors to depict the zonal averages, we took a criterion of 10% for the measurement error. Results show that Mars Year (MY) 29, which is regarded as a standard year in the previous analyses, had an enhancement of dust in the high altitudes (above 10 Pa) in the tropical region, and such an enhancement was not found in other MYs (28, 30 and 31). On the other hand, the distribution of ice clouds in MY 29 roughly agreed with other MYs’distribution.