@Article{MakarievaGoNeChShNoLi:2017:WaVaBu,
author = "Makarieva, Anastassia M. and Gorshokov, Victor G. and Nefiodov,
Andrei V. and Chikunov, Alexander V. and Sheil, Douglas and Nobre,
Antonio Donato and Li, Bai-Lian",
affiliation = "{Petersburg Nuclear Physics Institute} and {Petersburg Nuclear
Physics Institute} and {Petersburg Nuclear Physics Institute} and
{Institute of World Ideas} and {Norwegian University of Life
Sciences} and {Instituto Nacional de Pesquisas Espaciais (INPE)}
and {University of California}",
title = "Fuel for cyclones: the water vapor budget of a hurricane as
dependent on its movement",
journal = "Atmospheric Research",
year = "2017",
volume = "193",
pages = "216--230",
month = "Sept.",
keywords = "Condensation, Precipitation, Tropical cyclones.",
abstract = "Despite the dangers associated with tropical cyclones and their
rainfall, the origin of the moisture in these storms, which
include destructive hurricanes and typhoons, remains surprisingly
uncertain. Existing studies have focused on the region 40400 km
from a cyclone's center. It is known that the rainfall within this
area cannot be explained by local processes alone but requires
imported moisture. Nonetheless, the dynamics of this imported
moisture appears unknown. Here, considering a region up to three
thousand kilometers from cyclone center, we analyze precipitation,
atmospheric moisture and movement velocities for severe tropical
cyclones North Atlantic hurricanes. Our findings indicate that
even over such large areas a hurricane's rainfall cannot be
accounted for by concurrent evaporation. We propose instead that a
hurricane consumes pre-existing atmospheric water vapor as it
moves. The propagation velocity of the cyclone, i.e. the
difference between its movement velocity and the mean velocity of
the surrounding air (steering flow), determines the water vapor
budget. Water vapor available to the hurricane through its
movement makes the hurricane self-sufficient at about 700 km from
the hurricane center obviating the need to concentrate moisture
from greater distances. Such hurricanes leave a dry wake, whereby
rainfall is suppressed by up to 40% compared to the local
long-term mean. The inner radius of this dry footprint
approximately coincides with the hurricane's radius of water
self-sufficiency. We discuss how Carnot efficiency considerations
do not constrain the power of such open systems. Our findings
emphasize the incompletely understood role and importance of
atmospheric moisture stocks and dynamics in the behavior of severe
tropical cyclones.",
doi = "10.1016/j.atmosres.2017.04.006",
url = "http://dx.doi.org/10.1016/j.atmosres.2017.04.006",
issn = "0169-8095",
language = "en",
targetfile = "makarieva_fuel.pdf",
urlaccessdate = "27 abr. 2024"
}