The team mapped H2O and HDO repeatedly over nearly six Earth years (about three Mars years), producing global snapshots of each as well as their ratio. The maps reveal seasonal changes and “microclimates,” even though modern Mars is essentially a desert, according to the researchers. These ratio maps are the first of their kind.
The team was especially interested in regions near the north and south poles, because the polar ice caps are the planet’s largest known reservoir of water. The water stored there is thought to capture the evolution of Mars’ water from the wet Noachian period, which ended about 3.7 billion years ago, to the present.
The team mapped H2O and HDO repeatedly over nearly six Earth years (about three Mars years), producing global snapshots of each as well as their ratio. The maps reveal seasonal changes and “microclimates,” even though modern Mars is essentially a desert, according to the researchers. These ratio maps are the first of their kind.The team was especially interested in regions near the north and south poles, because the polar ice caps are the planet’s largest known reservoir of water. The water stored there is thought to capture the evolution of Mars’ water from the wet Noachian period, which ended about 3.7 billion years ago, to the present.
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