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Wyszukujesz frazę "Atmospheric circulation" wg kryterium: Temat

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    Wyświetlanie 1-10 z 10
    Tytuł:
    The atmospheric circulation patterns during dry periods in Lithuania
    Autorzy:
    Rimkus, E.
    Kazys, J.
    Valiukas, D.
    Stankunavicius, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/48255.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    drought
    atmospheric circulation
    hydrothermal coefficient
    dry period
    Lithuania
    cluster analysis
    temperate climate
    Źródło:
    Oceanologia; 2014, 56, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Linking sea level dynamic and exceptional events to large-scale atmospheric circulation variability: A case of the Seine Bay, France
    Autorzy:
    Turki, I.
    Massei, N.
    Laignel, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/48022.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    sea level
    atmospheric circulation
    variability
    storm surge
    flood risk
    Seine Bay
    France
    Źródło:
    Oceanologia; 2019, 61, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Warming of the West Spitsbergen current and sea ice North of Svalbard
    Autorzy:
    Piechura, J.
    Walczowski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/48817.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    sea ice
    ocean circulation
    Nordic Sea
    climate change
    atmospheric circulation
    West Spitsbergen
    Arctic Ocean
    warming
    Opis:
    According to the results of recent research, besides the atmospheric circulation, it is heat transport to the Arctic Ocean (AO) by ocean currents, the West Spitsbergen Current (WSC) in particular, that is playing a significant role in the process of Arctic warming. Data collected by the Institute of Oceanology, Polish Academy of Sciences (IO PAS), in the Norwegian and Greenland Seas, and Fram Strait during the last 20 years reveal considerable changes in the amount of heat transported by the WSC into the Arctic Ocean. An increase in Atlantic Water (AW) temperature and the intensification of heat transport were observed in 2004–06; after this period, both parameters decreased. The aim of this study was to find out whether the fluctuations in heat input by the WSC have influenced the sea-ice distribution around Svalbard. In fact they do, but oceanic heat transport should nonetheless be regarded as just one of many processes influencing sea-ice behaviour.
    Źródło:
    Oceanologia; 2009, 51, 2; 147-164
    0078-3234
    Pojawia się w:
    Oceanologia
    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:
    Wind wave climate of West Spitsbergen: seasonal variability and extreme events
    Autorzy:
    Wojtysiak, K.
    Herman, A.
    Moskalik, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2079303.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    wave climate
    wind wave
    atmospheric circulation
    seasonal variability
    extreme event
    Svalbard
    West Spitsbergen
    Opis:
    Waves are the key phenomenon directly influencing coastal morphodynamics. Facing insufficient observations, wind wave climate of the west coast of Spitsbergen can be characterized on the basis of the modelled data. Here we have used the results of spectral wave models: Wave Watch III (WW3) hindcast and WAM in ERA-interim (ERAi) reanalysis. We have observed the presence of seasonal cycle with difference of up to 1 m between significant wave heights in summer and winter. In wave-direction analysis we have noticed the southwestern swell component of remarkably narrow width, thus we expect unidirectional swell impact on the coastline. Extreme events analysis revealed that storms occur mainly in winter, but the most energetic ones (significant wave height of up to 9.5 m) occur in spring and autumn. We have identified positive trends in storms’ frequency (2 storms per decade) and storms’ total duration (4 days per decade) on the south of the study area. More storms can result in the increase of erosion rate on the south-western coasts of Spitsbergen, but this change may be highly dependent on the sea ice characteristics. Wave heights of wind sea and swell are correlated with the relevant atmospheric circulation indices, especially the North Atlantic Oscillation. In the recent decade, the correlation is stronger with WW3 than with ERAi data, at some locations explaining over 50% (over 30%) of the total variance of wind sea (swell) wave heights. In ERAi data, the relationship with circulation indices seems sensitive to the length of the analysis period.
    Źródło:
    Oceanologia; 2018, 60, 3; 331-343
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of atmospheric circulation on water temperature along the Southern Baltic Sea coast
    Autorzy:
    Girjatowicz, J.P.
    Swiatek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/48210.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    atmospheric circulation
    water temperature
    surface temperature
    thermal property
    air mass
    correlation
    Baltic Sea
    coastal zone
    Źródło:
    Oceanologia; 2019, 61, 1
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Temporal variation of extreme precipitation events in Lithuania
    Autorzy:
    Rimkus, E.
    Kazys, J.
    Bukantis, A.
    Krotovas, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/48347.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    atmospheric circulation
    CCLM model
    climate condition
    dynamics
    heavy rain
    Lithuania
    negative change
    precipitation
    regional modelling
    spatial distribution
    Opis:
    Heavy precipitation events in Lithuania for the period 1961–2008 were analysed. The spatial distribution and dynamics of precipitation extremes were investigated. Positive tendencies and in some cases statistically significant trends were deter- mined for the whole of Lithuania. Atmospheric circulation processes were derived using Hess & Brezowski’s classification of macrocirculation forms. More than one third of heavy precipitation events (37%) were observed when the atmospheric circulation was zonal. The location of the central part of a cyclone (WZ weather condition subtype) over Lithuania is the most common synoptic situation (27%) during heavy precipitation events. Climatic projections according to outputs of the CCLM model are also presented in this research. The analysis shows that the recurrence of heavy precipitation events in the 21st century will increase significantly (by up to 22%) in Lithuania.
    Źródło:
    Oceanologia; 2011, 53, (1-TI)
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of global climate oscillations on intermonthly to interannual variability of sea levels along the English Channel Coasts (NW France)
    Autorzy:
    Turki, I.
    Massei, N.
    Laignel, B.
    Shafiei, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/2079277.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    sea level
    interannual variability
    storm
    atmospheric circulation
    climatic oscillation
    sea surface temperature
    sea level pressure
    North Atlantic oscillation
    English Channel
    Opis:
    This work examines the multiscale variability in sea level along the English Channel coasts (NW France) using a wavelet multiresolution decomposition of water level values and climate oscillations in order to gain insights in the connection between the global atmospheric circulation and the local-scale variability of the monthly extreme surges. Changes in surges have exhibited different oscillatory components from the intermonthly (~3–6-months) to the interannual scales (~1.5-years, ~2–4-years, ~5–8-years) with mean explained variances of ~40% and ~25% of the total variability respectively. The correlation between the multiresolution components of surges and 28 exceptional stormy events with different intensities has revealed that energetic events are manifested at all timescales while moderate events are limited to short scales. By considering the two hypotheses of (1) the physical mechanisms of the atmospheric circulation change according to the timescales and (2) their connection with the local variability improves the prediction of the extremes, the multiscale components of the monthly extreme surges have been investigated using four different climate oscillations (Sea Surface Temperature (SST), Sea-Level Pressure (SLP), Zonal Wind (ZW), and North Atlantic Oscillation (NAO)); results show statistically significant correlations with ~3–6-months, ~1.5-years, ~2–4-years, and ~5–8-years, respectively. Such physical links, from global to local scales, have been considered to model the multiscale monthly extreme surges using a time-dependent Generalized Extreme Value (GEV) distribution. The incorporation of the climate information in the GEV parameters has considerably improved the fitting of the different timescales of surges with an explained variance higher than 30%. This improvement exhibits their nonlinear relationship with the large-scale atmospheric circulation.
    Źródło:
    Oceanologia; 2020, 62, 2; 226-242
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Observational evidence for human impact on aerosol cloud-mediated processes in the Baltic region
    Autorzy:
    Kruger, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/48934.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    aerosol
    cloud
    human impact
    radiation
    sulphur dioxide
    sulphur emission
    nitrogen oxide emission
    ammonia emission
    atmospheric circulation
    solar radiation
    Baltic region
    Źródło:
    Oceanologia; 2014, 56, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Currents and waves in the Northern Gulf of Riga: measurement and long-term hindcast
    Autorzy:
    Suursaar, U.
    Kullas, T.
    Aps, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/47862.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    hydrodynamic modelling
    water exchange
    wave
    Riga Gulf
    Baltic Sea
    long-term hindcast
    wave measurement
    wind force
    wind condition
    atmospheric circulation
    Opis:
    Based on measurements of waves and currents obtained for a period of 302 days with a bottom-mounted RDCP (Recording Doppler Current Profiler) at two differently exposed locations, a model for significant wave height was calibrated separately for those locations; in addition, the Gulf of Riga-Vainameri 2D model was validated, and the hydrodynamic conditions were studied. Using wind forcing data from the Kihnu meteorological station, a set of current, water exchange and wave hindcasts were obtained for the period 1966–2011. Current patterns in the Gulf and in the straits were wind-dependent with characteristic wind switch directions. The Matsi coast was prone to upwelling in persistent northerly wind conditions. During the hindcast period, currents increased along the Koiguste coast and in the Suur Strait, waves decreased noticeably off Koiguste but fluctuated without a clear linear trend near Matsi. The spatially contrasting results for differently exposed coasts were related to the corresponding variations in local wind conditions and to changes in atmospheric circulation patterns over northern Europe.
    Źródło:
    Oceanologia; 2012, 54, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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