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Simulating present-day climate with the INMCM4.0 coupled model of the atmospheric and oceanic general circulations 总被引：5，自引：0，他引：5
E. M. Volodin N. A. Dianskii A. V. Gusev 《Izvestiya Atmospheric and Oceanic Physics》2010,46(4):414-431
The INMCM3.0 climate model has formed the basis for the development of a new climate-model version: the INMCM4.0. It differs
from the previous version in that there is an increase in its spatial resolution and some changes in the formulation of coupled
atmosphere-ocean general circulation models. A numerical experiment was conducted on the basis of this new version to simulate
the present-day climate. The model data were compared with observational data and the INMCM3.0 model data. It is shown that
the new model adequately reproduces the most significant features of the observed atmospheric and oceanic climate. This new
model is ready to participate in the Coupled Model Intercomparison Project Phase 5 (CMIP5), the results of which are to be
used in preparing the fifth assessment report of the Intergovernmental Panel on Climate Change (IPCC). 相似文献
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N. A. Dianskii A. V. Gusev V. V. Fomin 《Izvestiya Atmospheric and Oceanic Physics》2012,48(2):222-240
We present two calculations of pollutant dispersal in the Pacific Ocean: (1) during possible ship-wrecks in the process of
spent nuclear fuel transportation from Petropavlovsk-Kamchatsky and (2) pollutant spread from the Japanese coast after the
Fukushima-1 nuclear disaster on March 11, 2011. The circulation was calculated using a σ model of ocean hydrothermodynamics
developed at the Institute of Numerical Mathematics (INM), Russian Academy of Sciences (RAS); it is adapted to cover the Pacific
Ocean basin from the equator to the Bering Strait with a high (1/8)° spatial resolution and it is capable of reproducing the
mesoscale ocean variations. The pollutant dispersal in the case of possible shipwrecks was estimated for currents characteristic
for a statistically average year with atmospheric forcing in accordance with the so-called normal CORE year data. The pollution
spread from the Fukushima-1 nuclear power plant (NPP) was estimated by calculating the circulation with the real atmospheric
forcing in accordance with the NCEP analysis data obtained from the Hydrometeorological Centre of Russia. It is noteworthy
that a simplified assimilation of the observed sea surface temperature (SST) was performed. In both cases the currents were
calculated simultaneously with the transport calculation of the pollutant as a passive admixture, which corresponds to a real-time
calculation of pollutant transport. A map analysis of pollution dispersal shows that the horizontal transport is substantially
more intense in the upper ocean layers than in deep ones. Therefore, like in the North branch of Kuroshio, pollutants can
be delivered to the deep layers not through deep-water horizontal transport, but rather as a result of vertical downwelling
from the already contaminated upper layers. However, the complex three-dimensional structure of the horizontal and vertical
transport may lead to reverse situations. A calculation of pollution transport from the Fukushima-1 NPP showed that radioactive
pollution would propagate eastward and not present the danger for Russian territory. Moreover, even for an exaggerated scenario
of pollution emission, the background pollution level will be exceeded only in a narrow region within 50 km of the Japanese
coast. 相似文献
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Water Resources - The data of atmospheric reanalysis NCEP/NCAR over 1948–2017 (R-1) and NCEP/DOE over 1979–2017 (R-2) have been used to show that variations of the Caspian Sea level are... 相似文献
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S. N. Moshonkin G. V. Alekseev N. A. Dianskii A. V. Gusev V. B. Zalesny 《Izvestiya Atmospheric and Oceanic Physics》2011,47(5):628-641
Calculations were performed using a model of the combined circulation of the Atlantic Ocean (from 20° S), the Arctic Ocean, and the Bering Sea with a resolution of 0.25° by latitude and longitude for 1958–2006. The results are compared with observational data and results obtained by other models. Model estimates were obtained for the evolution of the Atlantic water inflow into the Arctic basin through the Fram Strait and the Barents Sea. Increased transports of Atlantic water inflow into the Arctic basin were found for the first half of the 1990s and 2004–2006. The relation between Atlantic water transports into the Arctic basin and variations in the North Atlantic oscillation is shown. A positive trend of Atlantic water inflow into the Arctic basin through the Fram Strait (0.061 Sv per year) was revealed. The evolution of the freshwater-layer thickness in the Beaufort Circulation (BC) is considered. There are three periods of its increased values combined with the increased anticyclonic vorticity of BC currents: the 1960s, the 1980s, and from 1999 until now. The model estimate for a statistical mean timescale of the cycle of freshwater concentration and sink from the BC is 16 years, which is close to currently existing estimates. The evolution of anticyclonic vorticity of currents leads the variations in the freshwater-layer thickness of the BC by 1.75 years. Since the mid-1970s, there have been long positive trends of both the freshwater-layer thickness and anticyclonic vorticity of currents in the BC. In the same time period, there has been a satellite-registered negative trend in the ice area in the Arctic, which was reproduced by the model. 相似文献
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