Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "ocean surface" wg kryterium: Temat

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-24 z 24
    Tytuł:
    Atmosfernaja cirkuljacija v severnom polusharii i uglovojj moment vrashhenija zemli
    Atmospheric circulation in Northern hemisphere and global angular momentum
    Autorzy:
    Kholopcev, A.
    Nikiforova, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/77190.pdf
    Data publikacji:
    2015
    Wydawca:
    Komisja Motoryzacji i Energetyki Rolnictwa
    Tematy:
    atmospheric circulation
    Northern hemisphere
    correlation analysis
    ocean surface
    surface temperature
    Atlantic Ocean
    Źródło:
    Motrol. Motoryzacja i Energetyka Rolnictwa; 2015, 17, 1
    1730-8658
    Pojawia się w:
    Motrol. Motoryzacja i Energetyka Rolnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A comparison of ASCAT wind measurements and the HIRLAM model over the Baltic Sea
    Autorzy:
    Sluzenikina, J.
    Mannik, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/48369.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    backscattering
    Baltic Sea
    HIRLAM model
    numerical weather prediction
    ocean surface
    sea surface
    stormy season
    wind direction
    wind field
    wind scatterometer
    wind speed
    Opis:
    This paper presents a comparison of the wind data measured by the ASCAT polar-orbiting satellite scatterometer and winds forecast by the numerical weather prediction model HIRLAM in the Baltic Sea region during the stormy season in 2009. Two different resolution models were used in the comparison. Mutual quality and uncertainty characteristics of the measurements and predictions are determined. The results of the study show that the ASCAT wind data are well correlated with the HIRLAM predicted winds, which raises the credibility of both data sources in operational and hindcasting applications over the Baltic Sea. A case of phase error in a HIRLAM forecast of cyclonic activity over the Baltic Sea is discussed.
    Źródło:
    Oceanologia; 2011, 53, (1-TI)
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the geometry of ocean surface waves
    Autorzy:
    Massel, S.R.
    Powiązania:
    https://bibliotekanauki.pl/articles/48766.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    air-sea interaction
    atmosphere-ocean interaction
    deep water
    dynamic factor
    geometry
    irregular wave
    marine environment
    ocean surface
    regular wave
    shallow water
    surface wave
    water motion
    wave breaking
    wave slope
    Opis:
    The factors influencing the atmosphere-ocean transfer of mass and momentum, as well as incipient wave breaking and the amount of energy dissipated due to breaking, are discussed in detail. In particular, the influence of directional spreading on the statistics of surface wave slopes and the area of the wind- roughened ocean surface is demonstrated. Theoretical analysis and comparison with the available experimental data show that unimodal directional spreading is not able to reproduce the observed ratio of the cross-wind/up-wind mean square slopes. Better agreement is achieved when bimodal directional spreading, consisting of two wrapped-Gaussian distributions, is applied. The bimodal form suggested by Ewans (1998) is used in the paper. Moreover, the formulae developed here show that the increase in the area due to surface waves is rather small for both regular and irregular waves.
    Źródło:
    Oceanologia; 2011, 53, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Indian Ocean wind speed variability and global teleconnection patterns
    Autorzy:
    Sinha, M.
    Jha, S.
    Chakraborty, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2079299.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    wind speed
    variability
    sea surface temperature
    remote sensing
    Indian Ocean
    Opis:
    The influence of the local sea surface temperature (SST) and remote ENSO (El Niño-Southern Oscillation) indices on the wind speed (WS) data were explored for the Indian Ocean region. Relationships among the parameters were studied using spatial correlation plots and significant correlation ranges. Two months (July and January) representing opposite monsoon phases were selected for analysis for the period 1950–2016. There was a significant negative correlation between WS and SST over the Bay of Bengal (BOB) during July. Although different ENSO indices correlated differently in different areas of the Indian Ocean, the region off the coast of Sri Lanka was most significantly teleconnected. The southwest monsoon locally impacted the WS and SST relationship and the WS parameter was remotely teleconnected in both the monsoon seasons. Further empirical orthogonal function (EOF) analysis was applied on the 67 years WS data of the BOB region to extract the dominant mode representing maximum variability of the total variance. The temporal pattern of the first principal component (PC1) of WS data was linked to the North Atlantic Oscillations in January and the Atlantic Multidecadal Oscillation in July respectively. The continuous wavelet power spectra of the PC1 of WS showed significant regions in the 2–4-year band resembling the ENSO variability. Wavelet coherence applied between PC1 of WS and the ENSO indices showed greatest values for January in the 8–16-year band and for July in the 0–4-year band. A close relationship was established between the WS variability in BOB and the ENSO indices.
    Źródło:
    Oceanologia; 2020, 62, 2; 126-138
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Trendy temperatury powierzchni oceanu w sektorze pacyficznym Oceanu Południowego w ostatnim 25-leciu
    Trends in the sea surface temperature in the Pacific sector of the Southern Ocean in the las 25 year period (1980-2004
    Autorzy:
    Marsz, A. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/260641.pdf
    Data publikacji:
    2005
    Wydawca:
    Stowarzyszenie Klimatologów Polskich
    Tematy:
    temperatury powierzchni oceanu
    ochłodzenie powierzchni oceanu
    Ocean Południowy
    sektor pacyficzny
    Antarktyka
    sea surface temperature
    sea surface cooling
    climatic changes
    Southern Ocean
    Pacific sector
    Antarctic
    Opis:
    Praca omawia zmiany temperatury powierzchni wody (TPO) sektora pacyficznego Oceanu Południowego w pasach szerokości 60 i 50°S, zachodzące w przekrojach miesięcznych i rocznych. Stwierdzono występowanie ujemnych trendów TPO w całym pasie 60°S, z czego ponad 1/3 współczynników trendu jest istotna i wysoce istotna statystycznie. Obszary silnego ochłodzenia powierzchni oceanu tworzą tam dwa ośrodki: pierwszy w rejonie 170°E - 140°W, drugi - 120-080°W. W obu ośrodkach najsilniejsze spadki TPO następują w miesiącach chłodnej pory roku (maj - sierpień), w drugim - dodatkowo - stosunkowo silne ochłodzenie zaznacza się w miesiącach ciepłej pory roku (styczeń - marzec). Na szerokości 50°S ochłodzenie jest znacznie słabsze - istotne statystycznie zmiany TPO zaznaczają się wyłącznie po wschodniej stronie sektora (100-080°W), gdzie również występują trendy ujemne. Kumulacja istotnych i nieistotnych statystycznie trendów miesięcznych prowadzi do zaznaczania się na obszarze około 54% powierzchni sektora pacyficznego Oceanu Południowego istotnych statystycznie, ujemnych trendów rocznej TPO. Na pozostałym obszarze badanego sektora bądź brak realnych zmian TPO, bądź występuje tendencja do słabego spadku temperatury. Przebiegi temperatury rocznej wskazują, że w ośrodku zachodnim (60°S, 170°E -140°W) TPO konsekwentnie obniża się od początku obserwacji (1980 rok), gdy we wschodniej części sektora pacy-ficznego (120-080°W) cały obserwowany w 25-leciu trend stanowi konsekwencję silnego spadku rocznej TPO w ciągu ostatnich 7 lat (1997-2004).
    This work deals with monthly and annual changes in sea surface temperature (SST) of the Pacific sector of the South Ocean observed in 60°- 50°S latitudinal bands. The occurrence of negative trends of SST was noted in the entire 60° band and 1/3 of the trend coefficients is statistically significant and highly significant. The regions marked by strong cooling of ocean surface are formed by two centres - one 170° - 140°W and the other extending from 120° to 080°W. The greatest decrease in sea surface temperature in both centres takes place during cold season (May - August), in the other centre there is also additional quite strong cooling in the months of warm season (January - March). In the latitude 50°S the cooling is much weaker - statistically significant changes in SST are observed only in the eastern part of the Pacific region (100°- 080°W) where negative trends are also noted. Cumulating of statistically significant and non-significant monthly trends leads to statistically significant negative trends in annual SST observed in 54% of the area in the Pacific sector of the South Ocean. In the remaining area of the Pacific sector of the South Ocean there are either no visible changes in the sea surface temperature or there is tendency of weak decrease in temperature. The courses of annual SST indicate that in the western region (60S°, 170° -140°W) the SST has been decreasing constantly since the beginning of the observational period (since the year 1980), whereas in the eastern part of the Pacific sector (120°- 080°W) the whole trend observed over the 25-year period results from strong decrease in annual SST in the period of last 7 years (1997-2004).
    Źródło:
    Problemy Klimatologii Polarnej; 2005, 15; 17-26
    1234-0715
    Pojawia się w:
    Problemy Klimatologii Polarnej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Response of Eastern Indian Ocean (ODP Site 762B) benthic foraminiferal assemblages to the closure of the Indonesian seaway
    Autorzy:
    Rai, A.K.
    Singh, V.B.
    Powiązania:
    https://bibliotekanauki.pl/articles/48495.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Indian Ocean
    benthic foraminifera
    productivity
    upwelling
    oligotrophic water
    surface water
    Pliocene
    atmospheric circulation
    ocean circulation
    thermohaline circulation
    Źródło:
    Oceanologia; 2012, 54, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Surface waves in deep and shallow waters
    Autorzy:
    Massel, S.R.
    Powiązania:
    https://bibliotekanauki.pl/articles/48826.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    surface wave
    deep
    shallow water
    dynamic factor
    marine environment
    atmosphere-ocean interaction
    ocean form
    air-sea interface
    hydrodynamics
    Opis:
    The motion of water due to surface waves is the most dynamic factor observed in the marine environment. In this review various aspects of the wave modelling of non-linear, steep surface waves and their role in the atmosphere-ocean interaction are discussed. Significant improvements in wave forecasting have been made in the last ten years. This is to a large extent related to substantial progress in the description of wind forcing and other processes, as well as to the more efficient use of satellite observations and assimilation methods. One striking observation is the increasing variety and complexity of models in which more physical processes are implemented, greater precision and resolution achieved and extended ranges of applicability demonstrated. However, in order to evaluate the applicability of particular models, comparison with high quality experimental data, collected in nature or under laboratory conditions, is necessary.
    Źródło:
    Oceanologia; 2010, 52, 1; 5-52
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rekonstrukcje paleotemperatur w strefie Frontu Polarnego Oceanu Południowego (sektor atlantycki) na podstawie środkowo-górnoplejstoceńskich promienic z odwiertu ODP Leg 177 Site 1091
    Paleotemperature reconstructions at the Polar Front in the Southern Ocean (Atlantic sector) based on middle–late Pleistocene radiolarian record from ODP Leg 177 Site 1091
    Autorzy:
    Kotrys, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075164.pdf
    Data publikacji:
    2014
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    radiolaria
    Southern Ocean
    Polar Front
    summer sea surface temperature
    promienica
    Ocean Południowy
    Front Polarny
    letnia temperatura powierzchni morza
    Opis:
    Quantitative analysis of radiolarian assemblages, carried out at the Ocean Drilling Program (ODP) Leg 177 Site 1091 (Atlantic sector of the Southern Ocean), provides a well-established summer sea surface temperature (SSST) record from the Polar Front Zone extending back into the Middle Pleistocene at orbital- -submillennial resolution. In order to estimate the SSST, the Imbrie & Kipp method (IKM) and the artificial neural network (ANN) were applied. The SSST records derived from the IKM and ANN display close similarities in paleotemperature fluctuations, amplitudes and absolute values. The ANN-derived SSST estimations display a pattern of slightly more distinct warm events that is closest to the records obtained from EDC (EPICA Dome C) ice cores and ODP Site 1090. The warm events indicate a distinct shift in the extent of the Southern Ocean cold water sphere that must have affected the ocean–atmosphere–ice field interactions and the configuration of high-latitude wind fields. Consistently with the global trend of paleotemperature fluctuation, the SSST record is marked by a distinct shift from low to high glacial/interglacial variability around Termination V. Prior to Termination V, the SSST displays coldest values and low variability. It points to a distinct expansion of the Southern Ocean cold water masses and positional changes of hydrographical fronts during most of the lower Middle Pleistocene.
    Źródło:
    Przegląd Geologiczny; 2014, 62, 9; 448--455
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sky glint correction in measurements of upward radiance above the sea surface
    Autorzy:
    Olszewski, J.
    Kowalczuk, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/48314.pdf
    Data publikacji:
    2000
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    marine optics
    coastal water
    remote sensing
    glint reduction
    ocean water
    sea surface
    Opis:
    An experiment has been performed to determine the upward water-leaving radiance by non-contact measurement of the total upward and downward radiance above the sea surface from a moving ship. The method for achieving this aim is described: the radiance meters are both tilted in such a way that the upward radiance meter can ‘see’ that part of the measured downward radiance which would be reflected if the water surface were smooth and which is not derived directly from solar glitter. Both meters are firmly fixed in a special frame, which ensures that the required orientation is the most probable one. Time records of the measured parameters are analysed. The results are presented in several forms: frequency (histogram) analysis appears to be the most promising one.
    Źródło:
    Oceanologia; 2000, 42, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamics of the FKT system with different mooring lines
    Autorzy:
    Wu, Jo-Ti
    Chen, Jiahn-Horng
    Hsin, Ching-Yeh
    Chiu, Forng-Chen
    Powiązania:
    https://bibliotekanauki.pl/articles/258986.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    ocean current energy
    floating turbine system
    mooring line
    system dynamics
    surface waves
    Opis:
    To harness the endless hydrokinetic energy of the Kuroshio current, the joint research team of the National Taiwan University and the National Taiwan Ocean University has developed a floating Kuroshio turbine (FKT) system in Taiwan. In normal operation, the system floats at a certain small depth from the ocean surface to reduce the wave effects and take advantage of faster current speeds. In the present study, the effect of the mooring line on the system dynamics is investigated computationally. Two different auxiliary mooring line designs and, for each design, three different common mooring lines (polyester ropes of neutral buoyancy, iron chains, and 6×19 wires ropes with wire core) are examined. The study makes use of several commercial and in-house packages, integrated to find various coefficients. It is found that the mooring line, the auxiliary mooring line design, and the gravity centre can have a significant effect on system fluctuations in normal operation if the combination of these factors is not properly matched.
    Źródło:
    Polish Maritime Research; 2019, 1; 20-29
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Czynniki zmian klimatycznych w środkowym i górnym plejstocenie : ich zapis geologiczny w osadach Oceanu Południowego oraz rdzeniach lodowych
    Climate change indicators in middle and late Pleistocene as reflected in sediments of Southern Ocean and ice core records
    Autorzy:
    Kotrys, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075570.pdf
    Data publikacji:
    2016
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    plejstocen
    Ocean Południowy
    morskie stadium izotopowe
    temperatura powierzchni morza
    glacjał
    interglacjał
    Pleistocene
    Southern Ocean
    Marine Isotope Stage
    sea surface temperature
    glacials
    interglacials
    Opis:
    Climate changes during the Pleistocene were driven by large-scale orbital perturbations as well as by internal feedbacks on the Earth. One of the main roles in climate modelling is played by the Southern Ocean that is a great source of sea ice, carbon dioxide, dissolved silica and nutrients. Numerous sediment and ice records derived from the Southern Ocean and Antarctica document high-resolution climatic changes that allow us a better understanding of global climate evolution. Consistently with the global climatic trend, several sea surface temperature (SST) records of the Southern Ocean are marked by a distinct shift from low to high glacial/interglacial variability around Termination V (T V), called the Mid-Brunhes Event (MBE). Prior to T V, the Southern Ocean’s SST displays lower values and low variability. It points to a distinct expansion of the Southern Ocean cold water masses and positional changes of hydrographical fronts during most of the lower Middle Pleistocene, which started in the Pliocene. Beside large climatic changes, several abrupt distinct warming and cooling phases have been recognized. Some of them (MIS 22–19, MIS 11 and MIS 5) show similarities to MIS 1, which could be used for future climate predictions. In this paper we would like to present the middle and late Pleistocene climatic mechanisms in the Southern Ocean, and to show SST changes in relation to the hydrographic frontal movement, sea ice development and CO2 oscillations.
    Źródło:
    Przegląd Geologiczny; 2016, 64, 1; 35--42
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Aggregating sea surface hydrodynamic forecasts from multi-models for European seas
    Autorzy:
    Frishfelds, V.
    She, J.
    Murawski, J.
    Nielsen, J. W.
    Powiązania:
    https://bibliotekanauki.pl/articles/24201473.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    weather research and forecasting
    search and rescue
    operational ocean forecasting
    European Satellite Systems
    surface current
    drifting sea surface temperature
    European waters
    Opis:
    Maritime information services supporting European agencies such as the FRONTEX require European‐wide forecast solutions. Following a consistent approach, regional and global forecasts of the sea surface conditions from Copernicus Marine Service and national met‐ocean services are aggregated in space and time to provide a European‐wide forecast service on a common grid for the assistance of Search and Rescue operations. The best regional oceanographic model solutions are selected in regional seas with seamless transition to the global products covering the Atlantic Ocean. The regional forecast models cover the Black Sea, Mediterranean Sea, Baltic Sea, North Sea and combine the North Sea – Baltic Sea at the Danish straits. Two global models have been added to cover the entire model domain, including the regional models. The aggregated product is required to have an update frequency of 4 times a day and a forecasting range of 7 days, which most of the regional models do not provide. Therefore, smooth transition in time, from the shorter timerange, regional forecast models to the global model with longer forecast range are applied. The set of parameter required for Search and Rescue operations include sea surface temperature and currents, waves and winds. The current version of the aggregation method was developed for surface temperature and surface currents but it will be extended to waves in latter stages. The method relies on the calculation of aggregation weights for individual models. For sea surface temperature (SST), near real‐time satellite data at clear‐sky locations for the past days is used to determine the aggregation weights of individual forecast models. A more complicated method is to use a weighted multi‐model ensemble (MME) approach based on best forecast features of individual models and possibly including near real time observations. The developed method explores how satellite observations can be used to assess spatially varying, near real time weights of different forecasts. The results showed that, although a MME based on multiple forecasts only may improve the forecast, if the forecasts are unbiased, it is essential to use observations in the MME approach so that proper weights from different models can be calculated and forecast bias can be corrected. It is also noted that, in some months, e.g., June in Baltic Sea, even SST was assimilated, the forecast still show quite high error. There are also visible difference between different Copernicus Marine Environment Monitoring Service (CMEMS) satellite products, e.g. OSTIA and regional SST products, which can lead different forecast quality if different SST observation products are assimilated.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 3; 533--541
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Heat and salt fluxes in the West Spitsbergen Current area in summer
    Autorzy:
    Piechura, J.
    Osinski, R.
    Petelski, T.
    Wozniak, S.B.
    Powiązania:
    https://bibliotekanauki.pl/articles/49050.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Spitsbergen Current
    temperature
    radiation flux
    energy flux
    heat flux
    sea surface
    salt flux
    ocean circulation
    Opis:
    Fluxes of radiation, sensible and latent heat, and fluxes of heat and salt within the upper layer of the ocean were calculated on the basis of measurements carried out in the area of the Norwegian-Atlantic and West Spitsbergen Currents during summer 2000. The sea surface radiation balance was calculated from direct measurements of downward and upward short-wave (solar) radiation, the net radiation fluxes and sea surface temperature. The daily doses of radiation energy reaching and leaving the sea surface were also estimated. To calculate the vertical heat fluxes in the atmospheric boundary layer the bulk parameterisation method was used. In most cases, the calculated heat fluxes were rather low, the average sensible heat flux was c. 10 Wm−2, and the latent heat flux about one order of magnitude higher; this is what could be expected in summer. Salt fluxes to the air in the process of aerosol production are very small and can be neglected. In summer the highest quantities of heat and salt are exchanged during mixing with surrounding waters. According to our measurements, Atlantic Water on its northward course from about 70◦N to 79◦ N loses about 100 TWof heat and 900 × 103 kg of salt. We thought it could be interesting to find out what happens to them. Some preliminary results of our investigation are presented here.
    Źródło:
    Oceanologia; 2002, 44, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Monthly dynamics of carbon dioxide exchange across the sea surface of the Arctic Ocean in response to changes in gas transfer velocity and partial pressure of CO2 in 2010
    Autorzy:
    Wrobel, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/48876.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    carbon dioxide
    sea surface
    Arctic Ocean
    gas flux
    global carbon budget
    gas velocity
    wind speed
    Opis:
    The Arctic Ocean (AO) is an important basin for global oceanic carbon dioxide (CO2) uptake, but the mechanisms controlling air—sea gas fluxes are not fully understood, especially over short and long timescales. The oceanic sink of CO2 is an important part of the global carbon budget. Previous studies have shown that in the AO differences in the partial pressure of CO2 (DpCO2) and gas transfer velocity (k) both contribute significantly to interannual air—sea CO2 flux variability, but that k is unimportant for multidecadal variability. This study combined Earth Observation (EO) data collected in 2010 with the in situ pCO2 dataset from Takahashi et al. (2009) (T09) using a recently developed software toolbox called FluxEngine to determine the importance of k and DpCO2 on CO2 budgets in two regions of the AO — the Greenland Sea (GS) and the Barents Sea (BS) with their continental margins. Results from the study indicate that the variability in wind speed and, hence, the gas transfer velocity, generally play a major role in determining the temporal variability of CO2 uptake, while variability in monthly DpCO2 plays a major role spatially, with some exceptions.
    Źródło:
    Oceanologia; 2017, 59, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Orientirovochnye prognozy kharakteristic skorosti vetra v Evrope s uchetom izmenchivosti raspredelenija poverkhnostnykh temperatur Severnojj Atlantiki na primere Severnogo Prichernomorja
    Projections of wind speed characteristics in Europe with the accounting apportionment superficial temperatures in North Atlantic an example of Black Sea
    Autorzy:
    Kholopcev, A.
    Akcenova, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/76861.pdf
    Data publikacji:
    2013
    Wydawca:
    Komisja Motoryzacji i Energetyki Rolnictwa
    Tematy:
    forecasting
    wind speed
    temperature
    surface water
    North Atlantic Ocean
    Black Sea
    multiple regression model
    correlation
    identification
    Opis:
    On the example of the Northern Black Sea Coast representative items shown that allowance for the identification of predictive multiple-regression models of the interannual variability of SST anomalies identified variations in the North Atlantic waters, enables efficient evaluation of monthly mean values of wind speed with a lead time of at least 3 years.
    Źródło:
    Motrol. Motoryzacja i Energetyka Rolnictwa; 2013, 15, 5
    1730-8658
    Pojawia się w:
    Motrol. Motoryzacja i Energetyka Rolnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The demand analysis of oceanic T-S-V 3D reconstruction on wide-swath SSH data features based on ROMS and 4DVAR
    Autorzy:
    Zhou, C.
    Zhang, J.
    Yang, J.
    Cao, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/2079186.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    sea surface
    anomaly
    wide-swath altimeter
    3D reconstruction
    accuracy
    Regional Ocean Modelling System
    demand analysis
    Opis:
    Future wide-swath altimetry missions will provide high-resolution information about ocean surface elevation, and facilitate the characterization of meso- and sub-mesoscale ocean activities. In this study, the demand analysis of three-dimensional (3D) oceanic state reconstruction on wide-swath SSH data features was evaluated using a data assimilation strategy. Three groups of experiments were performed to determine if the wide-swath altimetry observations would improve the three-dimensional (3D) field estimates of ocean temperature-salinity-velocity (T-S-V), and to evaluate how the spatial and temporal resolution and accuracy of the wide-swath altimetry observations affected the ocean state estimation. The Regional Ocean Modeling System and the four-dimensional variational data assimilation method were used in the experiments, with numerical simulation for the Taiwan region at a resolution of 1/10° as the example. The sensitivity of the 3D ocean state construction to the wide-swath altimetry measurements was also investigated. The results showed that the wide-swath sea surface height (SSH) measurements would have an overall positive impact on the 3D T-S-V field and that the positive effect would increase as the resolution and accuracy of the observations increased, but the net benefits would gradually decrease. Among the three examined features of the wide-swath altimetry observations, the temporal resolution had the most influence on the 3D ocean state analysis.
    Źródło:
    Oceanologia; 2020, 62, 3; 309-325
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of monthly mean total ozone distribution changes with regard to Atlantic Ocean surface temperatures variations
    Ocena zmian miesięcznej średniej całkowitej dystrybucji ozonowej w aspekcie wahań temperatury wód powierzchniowych Oceanu Atlantyckiego
    Autorzy:
    Holoptsev, A.
    Bolshikh, A.
    Bekirova, V.
    Nikiforova, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/793427.pdf
    Data publikacji:
    2014
    Wydawca:
    Komisja Motoryzacji i Energetyki Rolnictwa
    Tematy:
    total ozone distribution
    variability
    Polska
    surface temperature
    ocean area
    modelling
    forecasting
    statistical relationship
    interaction
    troposphere
    stratosphere
    Źródło:
    Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2014, 14, 4
    1641-7739
    Pojawia się w:
    Teka Komisji Motoryzacji i Energetyki Rolnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Imprints of atmospheric waves on the Black Sea surface in data of ocean color scanners
    Autorzy:
    Evdoshenko, M.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2079182.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    remote sensing
    ocean optics
    Black Sea
    sea surface
    synthetic aperture radar
    microwave radiation
    boundary layer
    satellite observation
    Opis:
    Data from MERIS onboard Envisat and MODIS onboard Terra and Aqua for 15–16 May 2010 were used to study powerful imprints of atmospheric gravity waves (AGWs) on the western part the Black Sea surface. Two cold fronts crossed the sea following the warm front and caused the AGWs which modulated the sea surface. Imprints of AGWs appeared as stripes of alternating brightness, they had crest length more than a hundred kilometers and wavelength of units of kilometers. Wave amplitude of AGWs imprints, evaluated by a 90%-depth of light penetration into the sea at 490 nm z90, the value inverse to the diffuse attenuation coefficient Kd_490, was units of decimeterxs. MODIS 250-m data of remote sensing reflectance, wind components and atmospheric pressure near the sea surface were obtained by processing the top of atmosphere data with the SeaDAS software package. Negative correlations of fluctuations of z90 with fluctuations of wind stress and atmospheric pressure were found on the transects of more than ten kilometers. The impact of wind stress on the origination of AGW imprints was found to be determinant, while the impact of atmospheric pressure was not more than units of percent.
    Źródło:
    Oceanologia; 2020, 62, 3; 255-266
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Two models for absorption by coloured dissolved organic matter (CDOM)
    Autorzy:
    Schwarz, J.N.
    Kowalczuk, P.
    Kaczmarek, S.
    Cota, G.F.
    Mitchell, B.G.
    Kahru, M.
    Chavez, F.P.
    Cunningham, A.
    McKee, D.
    Gege, P.
    Kishino, M.
    Phinney, D.A.
    Raine, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/47774.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    ocean colour
    coloured dissolved organic matter
    surface water
    coastal water
    spectrophotometric measurement
    ultraviolet absorption
    absorption
    Vistula River
    Opis:
    The standard exponential model for CDOM absorption has been applied to data from diverse waters. Absorption at 440 nm (ag440) ranged between close to zero and 10 m−1, and the slope oft he semilogarithmic absorption spectrum over a minimum range of400 to 440 nm (s440) ranged between <0.01 and 0.04 nm−1. No relationship was found between ag440 or s440 and salinity. Except in the southern Baltic, s440 was found to have a broad distribution (0.0165 ± 0.0035), suggesting that it should be introduced as an additional variable in bio-optical models when ag440 is large. An alternative model for CDOM absorption was applied to available high quality UV-visible absorption spectra from the WisGla river (Poland). This model assumes that the CDOM absorption spectrum comprises distinct Gaussian absorption bands in the UV, similar to those ofb enzene. Five bands were fit to the data. The mean central energy ofal l bands was higher in early summer (E ∼7.2, 6.6, 6.4, 6.2 and 5.5 eV or 172, 188, 194, 200 and 226 nm) than in winter. The higher energy bands were found to decay in both height and width with increasing salinity, while lower energy bands broadened with increasing salinity. s440 was found to be correlated with shape parameters of the bands centred at 6.4 and 5.5 eV. While the exponential model is convenient for optical modelling and remote sensing applications, these results suggest that the Gaussian model offers a deeper understanding ofc hemical interactions affecting CDOM molecular structure.
    Źródło:
    Oceanologia; 2002, 44, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Estimation of diatom and dinoflagellate cell volumes from surface waters of the Northern Indian Ocean
    Autorzy:
    Chitari, R.R.
    Anil, A.C.
    Powiązania:
    https://bibliotekanauki.pl/articles/47851.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    diatom
    dinoflagellate
    cell size
    surface water
    microphytoplankton
    seasonal variation
    spatial variation
    Indian Ocean
    Bengal Bay
    Arabian Sea
    Opis:
    Phytoplankton samples collected from the Northern Indian Ocean (Bay of Bengal, northern Arabian Sea, and Dona Paula Bay Goa, west coast of India), were utilized to quantify changes in cell size, cell volume and carbon per cell of diatoms and dinoflagellates. The dataset from the Bay of Bengal also provides inter- and intra-annual variations (April 2008 to March 2010). The variations in cell size and volume were large in regions influenced by the riverine influx or terrigenous inputs. An interregional comparison of commonly available forms (8 species) points out that cell volumes are highest in the North Atlantic and lowest in the Mediterranean. The information provided will be useful in estimation of carbon biomass and biogeochemical studies.
    Źródło:
    Oceanologia; 2017, 59, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A model-measurements comparison of atmospheric forcing and surface fluxes of the Baltic Sea
    Autorzy:
    Rudolph, C.
    Lehmann, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/48268.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    coupled sea-ice-ocean model
    surface flux
    temperature
    pressure
    radiation flux
    heat flux
    air-sea interaction
    Baltic Sea
    wave radiation
    Opis:
    Observed basic meteorological quantities, heat and radiation fluxes from three different measurement stations in the Baltic Sea are compared with model data of the coupled sea-ice-ocean model BSIOM in order to evaluate the atmospheric forcing, corresponding surface fluxes and the sea surface response. Observational data weremade available from the BASIS winter campaigns in 1998 and 2001 as well as from the r/v ‘Alkor’ cruise in June 2001. Simulated fluxes were calculated from prescribed atmospheric forcing provided from the SMHI meteorological database and modelled sea surface temperatures. The comparison of these fluxes with observations demonstrates a strong correlation, even though mean differences in sensible heat fluxes range from 4 to 12 W m−2 in winter and −25 W m−2 in the June experiment. Differences in latent heat fluxes range from −10 to 23 W m−2. The short-wave radiation flux used as model forcing is on average 15 W m−2 less than the corresponding observations for the winter experiments and 40 W m−2 for the June experiment. Differences in net long-wave radiation fluxes range from −5 to 12W m−2 in winter and −62W m−2 for the June experiment. The correspondence between measured and calculated momentum fluxes is very high, which confirms the usability of our model component for calculating surface winds and wind stresses from the atmospheric surface pressure.
    Źródło:
    Oceanologia; 2006, 48, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of primary productivity estimates in the Baltic Sea based on the DESAMBEM algorithm with estimates based on other similar algorithms
    Autorzy:
    Stramska, M.
    Zuzewicz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/48944.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    ocean colour
    satellite remote sensing
    Baltic Sea
    primary productivity
    algorithm
    marine ecosystem
    chlorophyll concentration
    sea surface temperature
    photosynthetic active radiation
    latitude
    Źródło:
    Oceanologia; 2013, 55, 1
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Decadal fluctuations in North Atlantic water inflow in the North Sea between 1958-2003: impacts on temperature and phytoplankton populations
    Autorzy:
    Leterme, S.C.
    Pingree, R.D.
    Skogen, M.D.
    Seuront, L.
    Reid, P.C.
    Attrill, M.J.
    Powiązania:
    https://bibliotekanauki.pl/articles/48966.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    phytoplankton
    continental slope
    ocean circulation
    plankton
    Atlantic water
    plankton community
    climate
    temperature
    dynamics
    fluctuation
    pelagic ecosystem
    North Sea
    circulation
    population
    sea surface temperature
    Opis:
    The circulation of Atlantic water along the European continental slope, in particular the inflow into the North Sea, influences North Sea water characteristics with consequent changes in the environment affecting plankton community dynamics. The long-term effect of fluctuating oceanographic conditions on the North Sea pelagic ecosystem is assessed. It is shown that (i) there are similar regime shifts in the inflow through the northern North Sea and in Sea Surface Temperature, (ii) long-term phytoplankton trends are influenced by the inflow only in some North Sea regions, and (iii) the spatial variability in chemicophysical and biological parameters highlight the influence of smaller scale processes.
    Źródło:
    Oceanologia; 2008, 50, 1; 59-72
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-24 z 24

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies