Труды сотрудников ИВМ СО РАН

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Найдено документов в текущей БД: 9

    Challenges and opportunities for integrating lake ecosystem modelling approaches
[Text] / W.M. Mooij [et al.] // Aquat. Ecol. - 2010. - Vol. 44, Is. 3. - pp. 633-667, DOI 10.1007/s10452-010-9339-3. - Cited References: 260. - WM, RG, IP, SG, PV and AD were supported by grant 047.017.012 of the Netherlands Organization for Scientific Research (NWO) and the Russian Foundation for Basic Research (RFBR). LDSD was supported by NWO grant 817.01.007. DT and EJ were supported by EU-REFRESH, EU-WISER, CLEAR (a Villum Kann Rasmussen Centre of Excellence Project on lake restoration) and CRES. We thank Prof. Andre De Roos for his insightful comments and Dr. Tom Andersen for his contribution to the text. JJ wishes to thank Drs. T. Aldenberg, Dr. L. Van Liere, Mr. M.J. 't Hart, Ir. M.H.J.L Jeuken, Ing. S. van Tol, Ir. J.S. Sloot and many others including the many people who provided lake data, for their contributions to PCLake. This is publication 4838 of the Netherlands Institute of Ecology (NIOO-KNAW). . - ISSN 1386-2588
РУБ Ecology + Limnology + Marine & Freshwater Biology

Аннотация: A large number and wide variety of lake ecosystem models have been developed and published during the past four decades. We identify two challenges for making further progress in this field. One such challenge is to avoid developing more models largely following the concept of others ('reinventing the wheel'). The other challenge is to avoid focusing on only one type of model, while ignoring new and diverse approaches that have become available ('having tunnel vision'). In this paper, we aim at improving the awareness of existing models and knowledge of concurrent approaches in lake ecosystem modelling, without covering all possible model tools and avenues. First, we present a broad variety of modelling approaches. To illustrate these approaches, we give brief descriptions of rather arbitrarily selected sets of specific models. We deal with static models (steady state and regression models), complex dynamic models (CAEDYM, CE-QUAL-W2, Delft 3D-ECO, LakeMab, LakeWeb, MyLake, PCLake, PROTECH, SALMO), structurally dynamic models and minimal dynamic models. We also discuss a group of approaches that could all be classified as individual based: super-individual models (Piscator, Charisma), physiologically structured models, stage-structured models and traitbased models. We briefly mention genetic algorithms, neural networks, Kalman filters and fuzzy logic. Thereafter, we zoom in, as an in-depth example, on the multi-decadal development and application of the lake ecosystem model PCLake and related models (PCLake Metamodel, Lake Shira Model, IPH-TRIM3D-PCLake). In the discussion, we argue that while the historical development of each approach and model is understandable given its 'leading principle', there are many opportunities for combining approaches. We take the point of view that a single 'right' approach does not exist and should not be strived for. Instead, multiple modelling approaches, applied concurrently to a given problem, can help develop an integrative view on the functioning of lake ecosystems. We end with a set of specific recommendations that may be of help in the further development of lake ecosystem models.


Доп.точки доступа:
Mooij, W.M.; Trolle, D.; Jeppesen, E.; Arhonditsis, G.; Belolipetsky, P.V.; Белолипецкий, Павел Викторович; Chitamwebwa, D.B.R.; Degermendzhy, A.G.; DeAngelis, D.L.; Domis, L.N.D.; Downing, A.S.; Elliott, J.A.; Fragoso, C.R.; Gaedke, U.; Genova, S.N.; Генова, Светлана Николаевна; Gulati, R.D.; Hakanson, L.; Hamilton, D.P.; Hipsey, M.R.; 't Hoen, J.; Hulsmann, S.; Los, F.H.; Makler-Pick, V.; Petzoldt, T.; Prokopkin, I.G.; Rinke, K.; Schep, S.A.; Tominaga, K.; Van Dam, A.A.; Van Nes, E.H.; Wells, S.A.; Janse, J.H.

    Observed trends of chlorophyll concentration in the surface layer of the Northern and Central Atlantic (1979-1983)
[Text] / A. P. Shevyrnogov, G. S. Vysotskaya // SYNERGISTIC USE OF MULTISENSOR DATA FOR LAND PROCESSES. Ser. ADVANCES IN SPACE RESEARCH : PERGAMON PRESS LTD, 1998. - Vol. 22: A3 1 Symposium of COSPAR Scientific Commission A on Synergistic Use of Multisensor Data for Land Processes at 31st COSPAR Scientific Assembly (JUL 14-21, 1996, BIRMINGHAM, ENGLAND), Is. 5. - P701-704, DOI 10.1016/S0273-1177(97)01136-8. - Cited References: 7 . - ISBN 0273-1177. - ISBN 0-08-043469-X
РУБ Engineering, Aerospace + Astronomy & Astrophysics + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences + Remote Sensing

Кл.слова (ненормированные):
chlorophyll -- primary production -- remote sensing -- Atlantic Ocean

Аннотация: To preserve and utilize the biosphere it is imperative that we understand the long-term dynamics of the primary production process on our planet. Variability of chlorophyll concentration in the ocean is one of the most important components of this process. However, size and access make its investigation labour-intensive. Dependence of primary production on high variability of hydrophysical phenomena in the ocean (fluctuations of currents, frontal zones, etc.) makes it difficult to locate points to measure chlorophyll concentration dynamics. To locate such quasistationary zones with respect to seasonal dynamics of chlorophyll concentration by satellite data the Institute of Biophysics (Russian Academy of Sciences, Siberian Branch) has developed a geoinformation system. II use made it possible to locate such zones over the entire ocean. The work shows zones on the Central and Northern Atlantic. They form the ground to analyse perennial dynamics of chlorophyll concentration. The quasistationary zones are proposed for systematic monitoring of phytopigment concentration by space-borne and marine craft. (C) 1998 COSPAR. Published by Elsevier Science Ltd.

WOS,
Scopus

Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia
Russian Acad Sci, Siberian Branch, Ctr Comp, Krasnoyarsk 660036, Russia
ИБФ СО РАН
ИВМ СО РАН
Institue of Biophysics, Siberian Branch, Russian Academy of Sciences, Academgorodok 660036, Krasnoyarsk, Russian Federation
Computer Center, Siberian Branch, Russian Academy of Sciences, Academgorodok 660036, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Shevyrnogov, A.P.; Vysotskaya, G.S.; Высоцкая, Галина Степановна

    Long-term dynamics of chlorophyll concentration in the ocean surface layer (by space data)
/ A. Shevyrnogov, G. Vysotskaya // Advances in Space Research. - 2007. - Vol. 39, Is. 1. - P. 197-202, DOI 10.1016/j.asr.2006.10.015 . - ISSN 0273-1177

Кл.слова (ненормированные):
Dynamics -- Ocean -- Phytopigment -- Climatology -- Concentration (process) -- Hydrology -- Marine biology -- Ocean currents -- Plants (botany) -- Biosphere -- Ocean -- Phytopigments -- Chlorophyll

Аннотация: To preserve the biosphere and to use it efficiently, it is necessary to gain a deep insight into the dynamics of the primary production process on our planet. Variability of chlorophyll concentration in the ocean is one of the most important components of this process. These investigations are, however, very labor-consuming, because of the difficulties related to the accessibility of the water surface and its large size. In this work long-term changes in chlorophyll concentration in the surface layer of the ocean have been analyzed on the basis of the CZCS data for 7.5 years from 1979 to 1986 and the SeaWiFS data from 1997 to 2004. It has been shown that the average chlorophyll concentration calculated in all investigated areas varies moderately. However, when analyzing spatially local trends, the areas have been detected that have significant rise and fall of chlorophyll concentrations. Some interesting features of the long-term dynamics of chlorophyll concentration have been found. The opposite directions of long-term trends (essential increase or decrease) cannot be explained only by large-scale hydrological phenomena in the ocean (currents, upwellings, etc.). The measured chlorophyll concentration results from the balance between production and destruction processes. Which process dominates is determined by various hydrophysical, hydrobiological, and climatic processes, leading to sharp rises or falls of the concentration. It is important to estimate the scale of the areas in which this or that process dominates. Therefore, the study addresses not only the dynamics of the mean value but also the dynamics of the areas in which the dominance of certain factors has led to a sharp fall or rise in chlorophyll concentration. Thus, the obtained results can be used to estimate long-term changes in the ocean biota. В© 2006 COSPAR.

Scopus,
Полный текст


Доп.точки доступа:
Shevyrnogov, A.; Vysotskaya, G.; Высоцкая, Галина Степановна

    OBSERVATIONS OF HYDROPHYSICAL CHARACTERISTICS OF STRATIFIED SALT LAKE SHIRA (SIBERIA) AS AN IMPORTANT PART OF ITS ENVIRONMENTAL MONITORING
[Text] / L. A. Kompaniets, T. V. Iakubailik // WATER RESOURCES, FOREST, MARINE AND OCEAN ECOSYSTEMS, SGEM 2015, VOL II : STEF92 TECHNOLOGY LTD, 2015. - 15th International Multidisciplinary Scientific Geoconference (SGEM) (JUN 18-24, 2015, Albena, BULGARIA). - P635-641. - (International Multidisciplinary Scientific GeoConference-SGEM). - Cited References:6 . -

Кл.слова (ненормированные):
salt lake -- measuring hydro-values in situ -- ecological condition

Аннотация: To understand the mechanisms of formation of water quality it is necessary to study both biological and chemical properties of a lake as well as its hydro regime. For many years researchers have focused on the study of chemistry and biology of Lake Shira (situated in Siberia), but a detailed investigation of its hydro regime has become possible only recently with the development of modern measuring instruments. Using the latest generation of measuring devices we have obtained the hydrophysical characteristics of the stratified salt lake in situ (air and water temperature, wind strength and direction, water velocity). Relationships between the measured data have allowed us to analyze the flow in the lake as a whole, thus outlining the problem of determining lake ecological status in the period under observation.

WOS

Держатели документа:
ICM SB RAS, Krasnoyarsk, Russia.

Доп.точки доступа:
Kompaniets, Lidiya A.; Компаниец, Лидия Алексеевна; Iakubailik, Tatiana V.; Якубайлик, Татьяна Валерьевна

    HORIZONTALLY INHOMOGENEOUS DENSITY EFFECT ON LAKE SHIRA HYDROPHYSICS IN 3D SIMULATION
/ T. Iakubailik, L. Kompaniets // WATER, RESOURCES, FOREST, MARINE AND OCEAN ECOSYSTEMS CONFERENCE : STEF92 TECHNOLOGY LTD, 2016. - 16th International Multidisciplinary Scientific Geoconference (SGEM (JUN 30-JUL 06, 2016, Albena, BULGARIA). - P407-414. - (International Multidisciplinary Scientific GeoConference-SGEM). - Cited References:7 . -
РУБ Water Resources

Кл.слова (ненормированные):
salt stratified lake -- mathematical modelling

Аннотация: Salt stratified Lake Shira is the subject of extensive research because of its central role in the Khakassia (Russia) resort area. Hydro regime influences both biological and chemical properties of a lake. Generally mathematical modelling of Lake Shira hydrophysics was based on assumption of a uniform horizontal initial distribution of salinity. It was believed that freshening had little effect on the lake hydrophysics because of the small Son River tributary. This work is an attempt to determine the effect of freshened lake area on the lake hydrophysics and its ecological condition. 3D mathematical modelling based on modern computer packages is used to study in detail the influence of non-uniform salinity due to the influx of the Son River on the flow structure in Lake Shira. Numerical simulation has shown that even a relatively small area of fresh water in shallow part of this lake has a significant impact on the wind currents in the lake if they are accompanied by internal waves

WOS

Держатели документа:
RAS, ICM SB, Krasnoyarsk, Russia.

Доп.точки доступа:
Iakubailik, Tatiana; Kompaniets, Lidiya
519.6
С117

    Следы морских природных катастроф: численный анализ данных
[Текст] : статья / Михаил Александрович Курако, Константин Васильевич Симонов, Надежда Олеговна Кудря // Образовательные ресурсы и технологии. - 2016. - № 2. - С. 186-192 . - ISSN 2312-5500
   Перевод заглавия: Traces of marine natural disasters: a numerical data analysis
УДК

Аннотация: Предлагается новый подход к обработке пространственных данных - морфологический анализ линейных и нелинейных структур совместно со спектральной декомпозицией на основе вейвлет- и шиарлет-преобразований, применяемый к данным о природных катастрофах
We propose a new approach for processing spatial data - the morphological analysis of linear and non-linear structures in conjunction with a spectral decomposition based on the wavelet and shearlet transformations applied to the data about natural disasters

РИНЦ

Держатели документа:
Институт вычислительного моделирования СО РАН
Сибирский федеральный университет, Институт космических и информационных технологий

Доп.точки доступа:
Симонов, Константин Васильевич; Simonov K.V.; Кудря, Надежда Олеговна; Kudrya Nadezhda Olegovna; Kurako Mikhail Alexandrovich

    A staircase signal in the warming of the mid-20th century
[Text] : доклад, тезисы доклада / P. V. Belolipetsky [et al.] // 15th International Conference on Environmental Science and Technology (CEST 2017) : proceedings of the 15th International Conference on Environmental Science and Technology (CEST 2017). - Rhodes : Global Network for Environmental Science and Technology, 2017. - Ст. 00726

Кл.слова (ненормированные):
climate -- global warming -- regime shift -- ENSO variability -- time series analysis -- decadal change

Аннотация: The residual dynamics left after adjusting global surface temperature anomalies(1950-2014) for short-term variability from El Nino Southern Oscillation (ENSO) and volcanic eruptions have a staircase pattern.Linear trends for three quasi-stable periods 1950-1987, 1988-1997 and 1998-2014 are near zero with nearly all warming occurring during two step-like shifts in the years 1987/1988 and 1997/1998. We analysed several global datasets:HadCRUTv4.5–land and sea surface temperature (SST) anomalies; ICOADS v2.5–SST anomalies measured from ships; NCEP OIv2 –SST measured by satellite instruments; UAH MSU v5.6 and RSS MSUv3.3 –two satellite datasets measuring temperature of the lower troposphere (TLT). The ENSO signal was removed by EOF analysis, and gave Comparable results for all datasets. A similar staircase behavior was found in global NCEP/NCAR reanalyses of 300mb meridional wind and outgoing longwave radiation (OLR) In northern and southern midlatitudes.These many different sources confirm the reality of the regime-shift staircase structure of recent warming, which is masked by short-term ENSO variability and the effects of volcanic eruptions.

РИНЦ,
Источник статьи

Держатели документа:
Institute of Computational Modeling SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”?
Marine Biological Association of the UK, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK
Marine Institute,Plymouth University, Drake Circus, Plymouth PL4 8AA, UK
Sir Alister Hardy Foundation for Ocean Science, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK

Доп.точки доступа:
Belolipetsky, P.V.; Bartsev, S.I.; Saltykov, M.Y.; Reid, P.C.; 15th International Conference on Environmental Science and Technology (CEST 2017)(2017 ; 31.08 - 02.09 ; Rhodes)
Нет сведений об экземплярах (Источник в БД не найден)

    Synchronous shifts in outgoing longwave radiation and their interpretation
[Text] : доклад, тезисы доклада / M. Saltykov [et al.] // 15th International Conference on Environmental Science and Technology (CEST 2017) : proceedings of the 15th International Conference on Environmental Science and Technology (CEST 2017). - Rhodes : Global Network for Environmental Science and Technology, 2017. - Ст. 00684

Кл.слова (ненормированные):
climate shifts -- outgoing longwave radiation -- troposphere -- temperature -- satellite measurements -- clouds -- albedo

Аннотация: Outgoing long-wave radiation (OLR) has increased substantially over the period 1979 to 2016. In time series averaged for northern and southern mid-latitudes two abrupt, synchronous and statistically significant step-like shifts (1988 and 1997/8) are shown to have occurred with only one shift in the tropics (1997). The timing of these events coincides with similar shifts recently described in a wide range of climate, Earth system and ecological time series. Surface temperature shows a very similar pattern of change to OLR in the northern mid-latitudes, but differs considerably in the southern mid-latitude belt. We demonstrate that low clouds are positively correlated with OLR and the reverse with medium and high clouds confirming that the growth in OLR can be explained via a reduction in cloud cover and atmospheric albedo

РИНЦ,
Источник статьи

Держатели документа:
Emeriti of Eawag, Swiss Federal Institute of Aquatic Science and Technology, ?CH-8600 Duebendorf, Switzerland
Institute of Biophysics, SB RAS
Institute of Computational Modelling, SB RAS
Marine Biological Association of the UK, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK
Marine Institute, Plymouth University, Drake Circus, Plymouth PL4 8AA, UK
Sir Alister Hardy Foundation for Ocean Science, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK

Доп.точки доступа:
Saltykov, M.; Belolipetsky, P.; Hari, R.E.; Reid, P.C.; Bartsev, S.; 15th International Conference on Environmental Science and Technology (CEST 2017)(2017 ; 31.08 - 02.09 ; Rhodes)
Нет сведений об экземплярах (Источник в БД не найден)
539.3
М 54

    Метод образующих конечных элементов
[Текст] : статья / А. Д. Матвеев // Вестник Красноярского государственного аграрного университета. - 2018. - № 6. - С. 141-154 . - ISSN 1819-4036
   Перевод заглавия: The method of forming finite elements
УДК

Аннотация: Расчеты по методу конечных элементов (МКЭ) трехмерного напряженного состояния композитных и однородных оболочек вращения, цилиндрических оболофективно используются многосеточные конечные элементы (МнКЭ). При построении композитного МнКЭ используется система вложенных сеток. Мелкая сетка порождена базовым разбиением МнКЭ, которое сколь угодно точно учитывает его неоднородную структуру и форму (без увеличения размерности МнКЭ). На крупных сетках по МКЭ определяются функции перемещений, которые применяются для понижения размерности базового разбиения, что позволяет проектировать МнКЭ малой размерности. Функции перемещений и напряженное состояние в МнКЭ, которое описывается уравнениями трехмерной теории упругости, представляются в локальных декартовых системах координат. В этом случае МнКЭ оболочечного типа не имеют перемещений как жесткого целого. В данной работе предложен метод образующих конечных элементов (КЭ) для построения упругих трехмерных композитных (однородных) МнКЭ двух типов. Криволинейные МнКЭ 1-го типа получаются путем поворота заданного плоского образующего КЭ вокруг заданной оси на заданный угол, МнКЭ 2-го типа – путем параллельного перемещения образующего КЭ в заданном направлении на заданное расстояние. Такой подход позволяет проектировать МнКЭ, один характерный размер которых значительно больше (меньше) других. МнКЭ 1-го и 2-го типа применяются при расчете композитных оболочек вращения, колец, круглых пластин, дисков, валов, цилиндрических оболочек с переменным радиусом кривизны, пластин и балок сложной формы. Предложены МнКЭ 1-го и 2-го типа для расчета трехмерного напряженного состояния основных силовых элементов крыльев и фюзеляжей самолетов, корпусов кораблей, подводных лодок и ракет, гофрированных пластин и оболочек. Рассмотрена процедура построения криволинейных МнКЭ с помощью суперэлементов с внутренними узлами, применение которых приводит к уменьшению погрешности решений. Предлагаемые МнКЭ порождают дискретные модели малой размерности. Предложены верхние оценки погрешностей приближенных решений.?
Calculations by Finite Element Method (FEM) of the three-dimensional strained state of large-sized structures (wings and fuselages of aircraft, marine hulls, submarines and rockets) reduce to the construction of discrete models of very high dimension. To reduce the dimensionality of discrete models, three-dimensional multigrid finite elements (MgFE) are used. When constructing a composite MgFE, a nested grid system is used. A fine grid is generated by a basic parti- tioning of the MgFE that arbitrarily closely takes into account its heterogeneous structure and shape (without increasing the dimension of the MgFE). On large grids the functions of movements applied to the decrease of dimension of basic splitting allowing to project MgFE of small dimension are de- termined by FEM. The MgFE displacement functions and stress state described by the equations of the three- dimensional elasticity problem are represented in local Carte- sian coordinate systems. In this case MgFE of cover type has no movements as rigid whole. In the study the method of the forming final elements (FE) for creation of elastic three- dimensional composite (uniform) MgFE of two types is of- fered. Curvilinear type 1 MgFE are obtained by turning a giv-en plane forming FE around a given axis at a given angle, type 2 MgFE - by parallel moving forming FE in a given direc- tion for a given distance. This approach allows projecting the design of MgFE which size is significantly larger (smaller) than others'. MgFE of the 1st and 2nd type are applied at calculation of composite covers of rotation, rings, round plates, disks, shaft, cylindrical covers with a variable radius of curvature, plates and beams of difficult form. The 1st and 2nd type MgFE are proposed for calculating three-dimensional stress state of the main power elements of the wings and fuselage of aircraft, ship hulls, submarines and missiles, cor- rugated plates and shells. The procedure of constructing the first and second type MgFE used to calculate the three- dimensional stress state of the primary structural members of the wings and aircraft fuselages, marine hulls, submarines and missiles (stringers, frames, spars, bulkheads, floor, deck and shells of various shapes) is considered. Proposed MgFE generate small dimensional discrete models. Upper errors of approximate soiutions are proposed.

РИНЦ

Держатели документа:
Институт вычислительного моделирования СО РАН

Доп.точки доступа:
Матвеев, А.Д.; Matveev A.D.