排序方式: 共有215条查询结果,搜索用时 125 毫秒
11.
P. M. Kartashov T. A. Gornostaeva A. V. Mokhov O. A. Bogatikov 《Doklady Earth Sciences》2016,467(2):412-414
A CdSe high-pressure polymorph of the NaCl structural type of a0 = 0.549 nm and Fm–3m space group was discovered in nature for the first time. Its composition is within range of CdSe–CdSe1–х where x = 0.2 apfu. The phase was discovered as abundant nanosize inclusions in irgizite-type condensate glass separated from the sample of impact rock of the Zhamanshin crater (Central Kazakhstan). The treated mineral was presumably formed within a gas–plasma cloud at the moment of impact. 相似文献
12.
We have quantitatively estimated the contributions of anthropogenic forcing characterized by variations in the atmospheric content of greenhouse gases and of natural variability characterized by the Atlantic Multidecadal Oscillation to the trends of global surface air temperature from observations since the middle of the nineteenth century on the basis of three-component autoregressive models. 相似文献
13.
T. A. Gornostaeva A. V. Mokhov P. M. Kartashov O. A. Bogatikov 《Doklady Earth Sciences》2018,478(2):204-207
Using high-resolution analytical electron microscopy, heterogeneous fragments of cosmogenic substances, such as nickelphosphide Ni3P and the unnamed intermetallide ZnAl2, are detected for the first time for a large meteorite crater, the Zhamanshin circular structure. Due to the impossibility of simultaneous finding these phases in the same meteorite, an assumption is made on the cometary nature of the impactor of the Zhamanshin crater. 相似文献
14.
Doklady Earth Sciences - The regional features of the formation of extreme atmospheric and hydrological, climatic, and ecological regimes in connection with the manifestations of the Pacific... 相似文献
15.
Muryshev K. E. Eliseev A. V. Denisov S. N. Mokhov I. I. Arzhanov M. M. Timazhev A. V. 《Izvestiya Atmospheric and Oceanic Physics》2019,55(3):235-241
Izvestiya, Atmospheric and Oceanic Physics - The phase shift between changes in the global surface temperature Tg and atmospheric CO2 content $${{q}_{{{\text{C}}{{{\text{O}}}_{2}}}}}$$ has been... 相似文献
16.
Changes in climatic characteristics of Northern Hemisphere extratropical land in the 21st century: Assessments with the IAP RAS climate model 总被引:1,自引:0,他引:1
A. V. Eliseev M. M. Arzhanov P. F. Demchenko I. I. Mokhov 《Izvestiya Atmospheric and Oceanic Physics》2009,45(3):271-283
Assessments of future changes in the climate of Northern Hemisphere extratropical land regions have been made with the IAP RAS climate model (CM) of intermediate complexity (which includes a detailed scheme of thermo- and hydrophysical soil processes) under prescribed greenhouse and sulfate anthropogenic forcing from observational data for the 19th and 20th centuries and from the SRES B1, A1B, and A2 scenarios for the 21st century. The annual mean warming of the extratropical land surface has been found to reach 2–5 K (3–10 K) by the middle (end) of the 21st century relative to 1961–1990, depending on the anthropogenic forcing scenario, with larger values in North America than in Europe. Winter warming is greater than summer warming. This is expressed in a decrease of 1–4 K (or more) in the amplitude of the annual harmonic of soil-surface temperature in the middle and high latitudes of Eurasia and North America. The total area extent of perennially frozen ground S p in the IAP RAS CM changes only slightly until the late 20th century, reaching about 21 million km2, and then decreases to 11–12 million km2 in 2036–2065 and 4–8 million km2 in 2071–2100. In the late 21st century, near-surface permafrost is expected to remain only in Tibet and in central and eastern Siberia. In these regions, depths of seasonal thaw exceed 1 m (2 m) under the SRES B1 (A1B or A2) scenario. The total land area with seasonal thaw or cooling is expected to decrease from the current value of 54–55 million km2 to 38–42 in the late 21st century. The area of Northern Hemisphere snow cover in February is also reduced from the current value of 45–49 million km2 to 31–37 million km2. For the basins of major rivers in the extratropical latitudes of the Northern Hemisphere, runoff is expected to increase in central and eastern Siberia. In European Russia and in southern Europe, runoff is projected to decrease. In western Siberia (the Ob watershed), runoff would increase under the SRES A1B and A2 scenarios until the 2050s–2070s, then it would decrease to values close to present-day ones; under the anthropogenic forcing scenario SRES B1, the increase in runoff will continue up to the late 21st century. Total runoff from Eurasian rivers into the Arctic Ocean in the IAP RAS CM in the 21st century will increase by 8–9% depending on the scenario. Runoff from the North American rivers into the Arctic Ocean has not changed much throughout numerical experiments with the IAP RAS CM. 相似文献
17.
K. E. Muryshev A. V. Eliseev I. I. Mokhov N. A. Diansky 《Izvestiya Atmospheric and Oceanic Physics》2009,45(4):416-433
A new version of the Institute of Atmospheric Physics, Russian Academy of Sciences (IAP RAS), climate model (CM) has been
developed using an ocean general circulation model instead of the statistical-dynamical ocean model applied in the previous
version. The spatial resolution of the new ocean model is 3° in latitude and 5° in longitude, with 25 unevenly spaced vertical
levels. In the previous version of the oceanic model, as in the atmospheric model, the horizontal resolution was 4.5° in latitude
and 6° in longitude, with four vertical levels (the upper quasi-homogeneous layer, seasonal thermocline, abyssal ocean, and
bottom friction layer). There is no correction for the heat and momentum fluxes between the atmosphere and ocean in the new
version of the IAP RAS CM. Numerical experiments with the IAP RAS CM have been performed under current initial and boundary
conditions, as well as with an increasing concentration of atmospheric carbon dioxide. The main simulated atmospheric and
oceanic fields agree quite well with observational data. The new version’s equilibrium temperature sensitivity to atmospheric
CO2 doubling was found to be 2.9 K. This value lies in the mid-range of estimates (2–4.5 K) obtained from simulations with state-of-the-art
models of different complexities. 相似文献
18.
I. A. Gorchakova I. I. Mokhov P. P. Anikin A. S. Emilenko 《Izvestiya Atmospheric and Oceanic Physics》2018,54(2):154-161
The aerosol longwave radiative forcing of the atmosphere and heating rate of the near-surface aerosol layer are estimated for the extreme smoke conditions in the Moscow region in summer 2010. Thermal radiation fluxes in the atmosphere are determined using the integral transmission function and semiempirical aerosol model developed on the basis of standard aerosol models and measurements at the Zvenigorod Scientific Station, Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences. The aerosol radiative forcing reached 33 W/m2 at the lower atmospheric boundary and ranged between–1.0 and 1.0 W/m2 at the upper atmospheric boundary. The heating rate of the 10-m atmospheric layer near surface was up to 0.2 K/h during the maximum smoke conditions on August 7–9. The sensitivity of the aerosol longwave radiative forcing to the changes in the aerosol absorption coefficient and aerosol optical thickness are estimated. 相似文献
19.
20.