نتایج جستجو برای: ice impact
تعداد نتایج: 810821 فیلتر نتایج به سال:
Ice-nucleating organisms play important roles in the environment. With their ability to induce ice formation at temperatures just below the ice melting point, bacteria such as Pseudomonas syringae attack plants through frost damage using specialized ice-nucleating proteins. Besides the impact on agriculture and microbial ecology, airborne P. syringae can affect atmospheric glaciation processes,...
In order to monitor the impact of global warming phenomena over the Polar Regions, it is necessary to monitor snow/ice melt on the Greenland and the Antarctic ice sheets. Using MSMR data, it is possible to differentiate sea ice at different concentration levels. On the basis of microwave emissivities of continental ice and sea ice, useful information on the formation and melting of the ice can ...
Background: Pathogene transmission by ice, which has been attended for many years, is as important as its transmission by water. Ice infection is caused by using water distribution and translocation methods. The aim of this study is to evaluate microbial infections (Choliform variants) in ice making procedure at ice manufacturing houses in Kerman Province cities. Materials and Methods: This...
suggest that ocean tidal stresses can perturb ice stream motion at distances about an order of magnitude farther inland than tidal flexure of the ice stream alone. Recent models exploring the role of tidal perturbations in basal shear stress are primarily two-dimensional, with the impact of the ice stream margins either ignored or parameterized. Here, we use twoand three-dimensional finite elem...
Brief Communication: Can recent ice discharges following the Larsen-B ice-shelf collapse be used to infer the driving mechanisms of millennial-scale variations of the Laurentide ice sheet? J. Alvarez-Solas, A. Robinson, and C. Ritz Dpto. Astrof́ısica y Ciencias de la Atmósfera, Universidad Complutense, Madrid, Spain Laboratoire des Sciences du Climat et de l’Environnement (LSCE)-UMR8212, France ...
The presence of light-absorbing aerosol particles deposited on arctic snow and sea ice influences the surface albedo, causing greater shortwave absorption, warming, and loss of snow and sea ice, lowering the albedo further. The Community Earth System Model version 1 (CESM1) now includes the radiative effects of light-absorbing particles in snow on land and sea ice and in sea ice itself. We inve...
With near-complete replacement of Arctic multi-year ice (MYI) by first-year ice (FYI) predicted to occur within this century, it remains uncertain how the loss of MYI will impact the abundance and distribution of sea ice associated algae. In this study we compare the chlorophyll a (chl a) concentrations and physical properties of MYI and FYI from the Lincoln Sea during 3 spring seasons (2010-20...
The Greenland ice sheet has become one of the main contributors to global sea level rise, predominantly through increased meltwater runoff. The main drivers of Greenland ice sheet runoff, however, remain poorly understood. Here we show that clouds enhance meltwater runoff by about one-third relative to clear skies, using a unique combination of active satellite observations, climate model data ...
Radar images have revealed the possible presence of ice deposits in Mercury’s polar regions. Although thermal models indicate that water ice can be stable in permanently shaded regions near Mercury’s poles, the ultimate source of the water remains unclear. We use stochastic models and other theoretical methods to investigate the role of external sources in supplying Mercury with the requisite a...
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