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Non-Normal Effects on Salt Finger Growth
Publisher: American Meteorological Society
Abstract: Salt fingers, which occur because of the difference in diffusivities of salt and heat in water, may play an important role in ocean mixing and circulation. Previous studies have suggested the long-time dominance of initially ...
Sea Ice Trends in Climate Models Only Accurate in Runs with Biased Global Warming
Publisher: American Meteorological Society
Abstract: AbstractObservations indicate that the Arctic sea ice cover is rapidly retreating while the Antarctic sea ice cover is steadily expanding. State-of-the-art climate models, by contrast, typically simulate a moderate decrease ...
Faster Arctic Sea Ice Retreat in CMIP5 than in CMIP3 due to Volcanoes
Publisher: American Meteorological Society
Abstract: he downward trend in Arctic sea ice extent is one of the most dramatic signals of climate change during recent decades. Comprehensive climate models have struggled to reproduce this trend, typically simulating a slower ...
Westerly Wind Bursts: ENSO’s Tail Rather than the Dog?
Publisher: American Meteorological Society
Abstract: Westerly wind bursts (WWBs) in the equatorial Pacific occur during the development of most El Niño events and are believed to be a major factor in ENSO?s dynamics. Because of their short time scale, WWBs are normally ...
Transient Overturning Compensation between Atlantic and Indo-Pacific Basins
Publisher: American Meteorological Society
Abstract: Climate models consistently project (i) a decline in the formation of North Atlantic Deep Water (NADW) and (ii) a strengthening of the Southern Hemisphere westerly winds in response to anthropogenic greenhouse gas forcing. ...
How Climate Model Complexity Influences Sea Ice Stability
Publisher: American Meteorological Society
Abstract: ecord lows in Arctic sea ice extent have been making frequent headlines in recent years. The change in albedo when sea ice is replaced by open water introduces a nonlinearity that has sparked an ongoing debate about the ...
The Importance of Ice Vertical Resolution for Snowball Climate and Deglaciation
Publisher: American Meteorological Society
Abstract: Sea ice schemes with a few vertical levels are typically used to simulate the thermodynamic evolution of sea ice in global climate models. Here it is shown that these schemes overestimate the magnitude of the diurnal surface ...
The Effect of Milankovitch Variations in Insolation on Equatorial Seasonality
Publisher: American Meteorological Society
Abstract: Although the sun crosses the equator 2 times per year at the equinoxes, at times in the past the equatorial insolation has had only one maximum and one minimum throughout the seasonal cycle because of Milankovitch orbital ...
An analytical model of iceberg drift
Publisher: American Meteorological Society
Abstract: he fate of icebergs in the polar oceans plays an important role in Earth?s climate system, yet a detailed understanding of iceberg dynamics has remained elusive. Here, the central physical processes that determine iceberg ...
Modulation of Westerly Wind Bursts by Sea Surface Temperature: A Semistochastic Feedback for ENSO
Publisher: American Meteorological Society
Abstract: Westerly wind bursts (WWBs) in the equatorial Pacific are known to play a significant role in the development of El Niño events. They have typically been treated as a purely stochastic external forcing of ENSO. Recent ...