ARCA : Atmospheric Rivers Climatology in Antarctica
The ARCA project aims to describe atmospheric rivers in the polar regions by applying recent algorithms for detecting these events to simulations of past, present and future climates. ARCA will assess the impact of atmospheric rivers on Antarctic surface mass balance. ARCA will also explore the extent to which past atmospheric river activity can be recovered from ice core records. To do this, ARCA will collect meteorological, isotopic, and aerosol data in (atmospheric) water vapor and surface snow to define the isotopic and aerosol signatures of atmospheric rivers.
Rivers in the sky
Atmospheric rivers are filamentary atmospheric flows, carrying intense amounts of water vapor, generally associated with a low-level jet ahead of the cold front of an extratropical low, associated with the ascent of large masses of warm, moist air to the upper troposphere as they move poleward.
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