搜索结果: 46-60 共查到“理学 Sea ice”相关记录83条 . 查询时间(0.056 秒)
We develop an age-structured model for two krill populations near the Antarctic Peninsula and estimate the
relative recruitment events that reproduce observed trends in krill abundance and age struct...
The origin of sea salt in snow on Arctic sea ice and in coastal regions
sea salt snow Arctic sea ice coastal regions
2009/3/10
Snow, through its trace constituents, can have a major impact on lower tropospheric chemistry, as evidenced by ozone depletion events (ODEs) in oceanic polar areas. These ODEs are caused by the chemis...
A three-dimensional thermodynamical model of sea ice has been developed which is capable of simulating seasonal changes over the arctic and antarctic regions. The model is patterned after the earlier ...
A Model for the Thermodynamic Growth of Sea Ice in Numerical Investigations of Climate
Thermodynamic Growth Numerical Investigations of Climate Sea Ice
2009/3/7
A model is presented whereby the thickness and extent of sea ice may be predicted in climate simulations. A basic one-dimensional diffusion process is taken to act in the ice, with modifications due t...
Stochastic Dynamic Analysis of Polar Sea Ice Variability
Polar Sea Ice Variability Stochastic Dynamic Analysis
2009/2/19
The analysis of Arctic (1966–76) and Antarctic (1973–79) sea ice data is presented, and a dynamical model based on white noise atmospheric forcing, local stabilizing relaxation and lateral diffusion a...
A General Circulation Experiment with a Coupled Atmosphere, Ocean and Sea Ice Model
general circulation model National Center for Atmospheric Research
2009/2/19
This paper describes the construction and results of a comprehensive, three-dimensional general circulation model (GCM) of the earth's climate. The model, developed at the National Center for Atmosphe...
The Horizontal Coherency of the Motion of Summer Arctic Sea Ice
Horizontal Coherency Summer Arctic Sea Ice
2009/2/18
Four ice floes in the permanent arctic ice pack were instrumented during the summer of 1975. Spectral and cross-spectral analysis of the complex time series of the ice motion and of the surface winds ...
A numerical model for the simulation of sea ice circulation and thickness over a seasonal cycle is presented. This model is used to investigate the effects of ice dynamics on Arctic ice thickness and ...
An Analysis of Arctic Sea Ice Fluctuations, 1953–77
Arctic Sea Ice Fluctuations polar cap digitized data
2009/2/13
Arctic sea ice data from the 1953–77 period are digitized onto a set of 300 monthly grids covering the polar cap. Each grid contains 1648 ice concentration points at a spacing of 1° latitude (60 n mi)...
On Modeling Seasonal and Interannual Fluctuations of Arctic Sea Ice
Modeling Seasonal Interannual Fluctuations Arctic Sea Ice
2009/2/8
Some results from a series of three-year aperiodic simulations of the Northern Hemisphere sea ice cover are reported. The simulations employ the dynamic-thermodynamics sea ice model developed by Hible...
On the Development and Cause of the Weddell Polynya in a Sea Ice Simulation
Weddell Polynya Sea Ice Simulation
2009/2/5
Occurrence of the Weddell polynya, a large open-water area in the midst of the wintertime pack ice of the southern ocean, is examined through a sequence of numerical simulations of the sea ice cover. ...
Antarctic summer sea ice concentration and extent:comparison of ODEN 2006 ship observations,satellite passive microwave and NIC sea ice charts
summer sea ice concentration ODEN 2006 ship observations satellite passive microwave NIC sea ice charts
2010/2/3
Antarctic sea ice cover has shown a slight increase (<1%/decade) in overall observed ice extent as derived from satellite mapping from 1979 to 2008, contrary to the decline observed in the Arctic regi...
A Heat Balance for the Bering Sea Ice Edge
marginal ice zone Marginal Ice Zone Experiment Heat Balance
2009/1/16
Detailed oceanographic, meteorological and sea ice observations were obtained from the Bering Sea marginal ice zone (MIZ) during the February–March 1983 Marginal Ice Zone Experiment (MIZEX West). Thes...
A Numerical Study of Sea Ice and Ocean Circulation in the Arctic
Sea Ice Ocean Circulation Arctic
2009/1/8
A sea-ice model based bulk-viscous plastic dynamics and 3-layer thermodynamics is coupled to a multilevel primitive equation model of the Arctic Ocean and Greenland Sea. The combined model is forced b...
A thermodynamic sea-ice model, including leads, has been coupled to a one-dimensional oceanic mixed layer model in order to investigate the upper ocean-sea ice interactions. The oceanic heat flux at t...