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Wyszukujesz frazę "ice temperature" wg kryterium: Temat


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:
An attempt to assess the modern and the Little Ice Age climatic snowline altitude in the Tatra Mountains
Autorzy:
Zasadni, J.
Kłapyta, P.
Powiązania:
https://bibliotekanauki.pl/articles/294601.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
climatic snowline
temperature-precipitation ELA
Little Ice Age
Tatra Mts.
Opis:
An empirical glacio-climatic relation (Ohmura et al., 1992) and meteorological data (temperature and precipitation) are employed to provide the elevation in the Tatra Mts. climate model, where conditions are suitable for hypothetical glacierisation (temperature-precipitation ELA). During the Little Ice Age (LIA) it is to have been 1.5 centigrade colder than during the warmest decades of the 20th century (Niedźwiedź, 2004); however, some scenarios are used to define precipitation amounts related to the vertical distribution in climate model and temporal variability. The results indicate that during both considered periods - the warmest decades of the 20th century and the coolest period of LIA - the climatic snowline (cSL) was placed in most cases above the highest Tatra Mts. summits and crests. However, its spatial arrangement was unequal. In the vicinity of Kasprowy Wierch, the modern cSL is assessed to be at ca. 2,450-2,650 m a.s.l. and that during LIA at ca. 2,300-2,450 m a.s.l. In the case of Lomnicky Štit (2,634 m) it was at the level of ca. 2,700–2,800 m a.s.l. (modern times) and ca. 2,600–2,700 m a.s.l. (LIA). The discrepancies in the cSL altitude between these two locations can be explained in part by exposition to the prevailing moisture transport and orographically-induced precipitation.
Źródło:
Landform Analysis; 2009, 10; 124-133
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza struktury i czasu trwania zjawisk lodowych na Warcie na tle warunków termicznych w okresie 1991-2010
The analysis of the structure and duration of ice phenomena on the Warta river in relation to thermic conditions in the years 1991–2010
Autorzy:
Graf, R.
Łukaszewicz, J.
Jawgiel, K.
Powiązania:
https://bibliotekanauki.pl/articles/338625.pdf
Data publikacji:
2018
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
pokrywa lodowa
rzeka Warta
temperatura powietrza
termika wód
zjawiska lodowe
air temperature
ice cover
ice phenomena
Warta River
water thermal conditions
Opis:
W artykule przedstawiono wyniki analizy struktury i czasu trwania zjawisk lodowych na Warcie w latach 1991–2010. Przebieg zjawisk lodowych został opisany na tle zmian temperatury powietrza i wody oraz wskaźnika Oscylacji Północnoatlantyckiej (NAO). Określono formy zjawisk lodowych występujących na Warcie w poszczególnych cyklach jej zlodzenia. Zinterpretowano również zmienność temperatury wody w okresie zimowym i jej wpływ na liczbę dni ze zjawiskami lodowymi. W analizie zjawisk lodowych uwzględniono: charakter odcinka rzeki, na którym prowadzono obserwacje oraz stopień antropopresji, wyrażający się przekształceniem koryta rzecznego, wpływem urbanizacji w strefach większych ośrodków miejskich oraz oddziaływaniem zbiornika Jeziorsko. Na podstawie przeprowadzonych badań wyznaczono ogólną tendencję w zmienności zjawisk lodowych występujących na rzece, a także określono przyczyny zróżnicowania struktury zjawisk w ujęciu regionalnym. Stwierdzono związek pomiędzy przebiegiem i częstością zjawisk lodowych a warunkami termicznymi i fazami NAO.
The article presents the results of the analysis of the structure and duration of ice phenomena on the Warta River. The course of ice phenomena has been described against the background of air and water temperature, and North Atlantic oscillation (NAO) changes including. The forms of ice phenomena, exist on the Warta River in particular cycles of its icing, were determined. The variability of the water temperature in winter and its impact on the number of days with ice phenomena on the river has been taken into consideration. The analysis of ice phenomena has taken into account the nature of the section of the river on which observations were made, the scale of anthropopressure affecting the transformation of the riverbed, the impact of urbanization in the zones of larger urban centers and the influence of the Jeziorsko Reservoir. On the basis of the conducted research, a general tendency was determined for the variability of ice phenomena occurring on the river. Reasons for the differentiation of the structure of ice phenomena on a regional basis were determined. The results show in detail the connection between the course and frequency of ice phenomena and other hand thermal conditions and NAO phases.
Źródło:
Woda-Środowisko-Obszary Wiejskie; 2018, 18, 4; 5-28
1642-8145
Pojawia się w:
Woda-Środowisko-Obszary Wiejskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania dyfuzyjności cieplnej wody metodą wymuszenia okresoweg
Investigation of the Thermal Diffusivity of Water Applying Temperature Oscillation
Autorzy:
Szczepaniak, R.
Panas, A. J.
Nowakowski, M.
Panas, J.
Powiązania:
https://bibliotekanauki.pl/articles/403811.pdf
Data publikacji:
2012
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
mechanika
fizyczne właściwości materiałów
dyfuzyjność cieplna wody
dyfuzyjność cieplna lodu
metoda wymuszeń okresowych
applied mechanics
thermophysical properties of materials
thermal diffusivity of ice
thermal diffusivity of water
temperature oscillation technique
Opis:
W pracy przedstawiono zastosowanie zmodyfikowanej metody wymuszeń okresowych do określenia dyfuzyjności cieplnej wody. Eksperyment objął przedział temperatury od -13,6°C do +12,0°C. Dyfuzyjność cieplną wyznaczono z danych zarówno amplitudowych, jak i fazowych. W odróżnieniu od klasycznego sposobu postępowania, w obliczeniach wykorzystano nieprzybliżone zależności modelu analitycznego generujące równania przestępne. Badania potwierdziły skuteczność zastosowanej metody badań, która może być wykorzystana do zweryfikowania dotychczas publikowanych danych.
The modified periodic temperature oscillation i.e. Angstrom technique at scanning mode operation has been applied to perform continuous measurements of the thermal diffusivity of water. The investigations has been done at cooling from 12,0°C to -13,6°C. The thermal diffusivity has been calculated independently from two transcendental relations based on the measured amplitude attenuation and the measured phase shift of the temperature oscillation respectively. The experiments have proved performance of the applied method for systematic studies of thermophysical properties of ice accretions. Unique results of the thermal diffusivity of water supercooled to about -5°C have been obtained also.
Źródło:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa; 2012, 3, 3 (9); 85-97
2081-5891
Pojawia się w:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Climatic change on King George Island in the years 1948–2011
Autorzy:
Kejna, Marek
Araźny, Andrzej
Sobota, Ireneusz
Powiązania:
https://bibliotekanauki.pl/articles/2051395.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Antarctic
South Shetland Islands
climate
air temperature
air pressure
pre−cipitation
sea surface temperature
sea−ice
Źródło:
Polish Polar Research; 2013, 2; 213-235
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Floating platforms made of monolithic closed rectangular tanks
Autorzy:
Szymczak-Graczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/200091.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
floating platforms
rectangular tank
hydrostatic load
temperature load
ice floe load
bending moments
definite difference method
platformy pływające
zbiornik prostokątny
obciążenia hydrostatyczne
obciążenie temperaturowe
momenty zginające
Opis:
The paper concerns closed monolithic rectangular tanks produced in one stage (one technological process without interruptions or dilatations) that function as floating platforms in inland waters. It presents an analysis of static work of the above-described tanks subject to the hydrostatic load of walls and bottom as well as the uniform load of the upper plate. Calculations were made with the use of the finite difference method in terms of energy, assuming the Poisson’s ratio ν = 0. Based on the obtained results, charts are provided that illustrate the variation of bending moments for the characteristic points of the analysed tanks as per specific workloads. The paper also provides test calculations for buoyancy, stability and the metacentric height for one type of the tank that was produced for the study. In this case, in addition to the above-mentioned loads, the calculation also took into account load temperature and ice load floe. The paper presents photographs taken when launching a pontoon prototype.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 2; 209-216
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of landfast ice on the hydrography and circulation of the Baltic Sea coastal zone
Autorzy:
Merkouriadi, I.
Lepparanta, M.
Powiązania:
https://bibliotekanauki.pl/articles/49047.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Finland Gulf
hydrography
landfast ice
circulation
Baltic Sea
coastal zone
water temperature
salinity
current
Źródło:
Oceanologia; 2013, 55, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New coupled atmosphere-ocean-ice system COSMO-CLM/NEMO: assessing air temperature sensitivity over the North and Baltic Seas
Autorzy:
Van Pham, T.
Brauch, J.
Dieterich, C.
Frueh, B.
Ahrens, B.
Powiązania:
https://bibliotekanauki.pl/articles/48930.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
coupled atmosphere-ocean-ice system
temperature sensitivity
air temperature
Baltic Sea
North Sea
regional climate modelling
COSMO-CLM model
Źródło:
Oceanologia; 2014, 56, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oddziaływanie termiczne strugi wodno-lodowej podczas usuwania powłok lakierniczych
Thermal impact of the water-ice jet during the removal of varnish coats
Autorzy:
Chomka, G.
Powiązania:
https://bibliotekanauki.pl/articles/316837.pdf
Data publikacji:
2012
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
struga wodno-lodowa
powłoka lakiernicza
temperatura
współczynnik wyrównania temperatury
water-ice jet
varnish coat
temperature
temperature alignment coefficient
Opis:
W artykule omówiono oddziaływanie termiczne, jakie wywiera wysokociśnieniowa struga wodnolodowa na powłokę lakierniczą oraz materiał podłoża. Rozpatrzono kierunek rozchodzenia się ciepła zgodny z posuwem strugi oraz występujący w głąb materiału.
The article covers a thermal impact of a high-pressure water-ice jet on the varnish coat and the base material. The direction was considered of the propagation of heat that is compliant with the jet feed and the one that occurs inside the material.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2012, 13, 5; 94-101
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preservation of fresh grapes at ice-temperature-high-humidity
Autorzy:
Min, Z.
Chunli, L.
Yanjun, H.
Qian, T.
Haiou, W.
Powiązania:
https://bibliotekanauki.pl/articles/24803.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
ice-temperature-high-humidity
biochemical change
preservation
grape
China
fruit
Źródło:
International Agrophysics; 2001, 15, 2
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pronounced anomalies of air, water, ice conditions in the Barents and Kara Seas, and the Sea of Azov
Autorzy:
Matishov, G.G.
Dzhenyuk, S.L.
Moiseev, D.V.
Zhichkin, A.P.
Powiązania:
https://bibliotekanauki.pl/articles/49104.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
climate
water temperature
anomaly
air temperature
sea ice
Barents Sea
Kara Sea
Azov Sea
hydrographic condition
winter condition
Źródło:
Oceanologia; 2014, 56, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przebieg i charakter zjawisk lodowych na wybranych odcinkach rzek przymorza o wysokim stopniu antropopresji na tle zmian klimatycznych zachodzących w strefie brzegowej Bałtyku
The course and the character of the ice phenomena in selected sections of Przymorze rivers with a high influence of anthropopressure in relation to the climate changes that occur in the coastal zone of the Baltic sea
Autorzy:
Lukaszewicz, J.T.
Powiązania:
https://bibliotekanauki.pl/articles/40537.pdf
Data publikacji:
2017
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
przymorze
strefa przybrzezna
pobrzeze Baltyku
rzeki
przeplyw wody
zjawiska lodowe
zlodzenia wod
pokrywa lodowa
temperatura wody
temperatura powietrza
zmiany klimatyczne
coastal area
coastal zone
Baltic coastal zone
river
coastal river
water flow
ice phenomenon
ice cover
air temperature
water temperature
climate change
Źródło:
Acta Scientiarum Polonorum. Architectura; 2017, 16, 1
1644-0633
Pojawia się w:
Acta Scientiarum Polonorum. Architectura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quality assessment of atmospheric surface fields over the Baltic Sea from an ensemble of regional climate model simulations with respect to ocean dynamics
Autorzy:
Meier, H.E.M.
Hoglund, A.
Doscher, R.
Andersson, H.
Loptien, U.
Kjellstrom, E.
Powiązania:
https://bibliotekanauki.pl/articles/48250.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
atmosphere-ocean coupling
Baltic region
climate change
climate model
ecosystem
global warming
hydrographic change
regional climate
regional climate modelling
sea ice
temperature
water temperature
Opis:
Climate model results for the Baltic Sea region from an ensemble of eight simulations using the Rossby Centre Atmosphere model version 3 (RCA3) driven with lateral boundary data from global climate models (GCMs) are compared with results from a downscaled ERA40 simulation and gridded observations from 1980 –2006. The results showed that data from RCA3 scenario simulations should not be used as forcing for Baltic Sea models in climate change impact studies because biases of the control climate significantly affect the simulated changes of future projections. For instance, biases of the sea ice cover in RCA3 in the present climate affect the sensitivity of the model’s response to changing climate due to the ice-albedo feedback. From the large ensemble of available RCA3 scenario simulations two GCMs with good performance in downscaling experiments during the control period 1980–2006 were selected. In this study, only the quality of atmospheric surface fields over the Baltic Sea was chosen as a selection criterion. For the greenhouse gas emission scenario A1B two transient simulations for 1961 –2100 driven by these two GCMs were performed using the regional, fully coupled atmosphere-ice-ocean model RCAO. It was shown that RCAO has the potential to improve the results in downscaling experiments driven by GCMs considerably, because sea surface temperatures and sea ice concentrations are calculated more realistically with RCAO than when RCA3 has been forced with surface boundary data from GCMs. For instance, the seasonal 2 m air temperature cycle is closer to observations in RCAO than in RCA3 downscaling simulations. However, the parameterizations of air-sea fluxes in RCAO need to be improved.
Źródło:
Oceanologia; 2011, 53, (1-TI)
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sekularne i ekstremalne procesy erozji wodnej gleb na Pojezierzu Drawskim
Secular and extreme soil erosion processes in the Drawskie Lakeland
Autorzy:
Majewski, Mikołaj
Powiązania:
https://bibliotekanauki.pl/articles/295194.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
gleba
erozja wodna
proces sekularny
proces ekstremalny
Pojezierze Drawskie
warunki meteorologiczne
rzeźba terenu
litologia
temperatura powietrza
opady atmosferyczne
klimat
pokrywa śnieżna
przemarznięcie gruntu
soil
water erosion
secular process
extreme process
Drawskie Lakeland
meteorological conditions
relief of the terrain
lithology
air temperature
precipitation
climate
ice sheets
Opis:
Soil erosion by water is one of the most important factors affecting contemporary landscape changes within the lowland geoecosystems in Central Europe. Soil erosion by water mainly depends on: rainfalls (especially its intensity and erosivity), length of slope and its inclination, type of cultivation and usage of land, anti-erosion treatments and susceptibility of soils to erosion. The aim of conducted research was to evaluate conditioning and magnitude of secular and extreme soil erosion processes in the Drawsko Lakeland with special considering of rainfall erosivity index (EI30). The main goal was realised through several research tasks. The first task involved examination of surface runoff and slope wash conditionings, course and quantity in the testing plot located within the Chwalimski Potok catchment. The second task was related to evaluate rainfall impact to soil erosion by water processes. It was realised by computation rainfall characteristics: intensity, kinetic energy and erosivity. In order to assess secular and extreme soil erosion impact to land relief changes, research were provided with additional details by conducting three field experiments with simulated rainfall. Stationary observation and quantitative researches of soil erosion (at testing plots) have been conducting within the Chwalimski Brook catchment for three hydrological years (2012–2014). The slope with the test area is located within the 1st order catchment being a subsystem of the Młynski Brook catchment and then followed by the upper Parsęta catchment. This area covers 4.8 hectares and is characterised by short slopes with small height variances up to 10 meters. Historically, the area was covered with agricultural crops, currently they cover about 10% of the area. The slope is covered with gleyic retisols and its average inclination is about 4 degrees with its south-east exposure. The measuring system of soil erosion covered 5 testing plots with different agricultural use (bare fallow, meadow, potatoes, spring and winter crops). Plots are 42 metres long and 4 metres width. In the bottom edge of each plot catchers with volume of 800 dm3 were installed. In this research, only data from black fallow were considered. Such tillage is recognised as a standard in soil erosion studies. Two experiments have been conducted in this testing plot. The third one has been conducted on slope located within an area of undulated morainic plateau in the Kłuda catchment. The slope is characterised by greater height variances than in Chwalimski Brook catchment. The slope, where the experiment has been conducted, is situated within local closed depression and is covered by sands underlain by boulder clay. Its average slope is about 10° with its southwest exposure. Although annual precipitation in the three-year measurement period was comparable with mean value from multi-year period (1987–2014), its intensity and erosivity were distinguishably lower. Such rainfall conditions are not favourable for extreme soil erosion by water processes, thus any relief forms from such geomorphological processes were not observed in the Drawsko Lakeland. Due to lack of that kind of forms, in 2013 and 2014, three field experiments were conducted. The main aim of experiments was to evaluate the impact of high intensity rainfall on soil surface. The first experiment consisted of 5, the second and the third of 4 rainfall simulations. The rainfall was created by using a purpose-built rain simulator, consisting of 3 and 6 sprinklers placed around the testing plot. Despite the slope inclination in the Kłuda catchment was 2.5 times steeper than Chwalimski Potok’s slope, surface runoff attained smaller volume, because of remarkably higher infiltration rate. In 2012–2014, surface runoff and soil loss has occurred 8 times each year. The maximal monthly surface runoff volume was registered in February 2012, and it equalled 10.1 dm3 m−2 and the maximal soil loss value was registered in May 2013 and equalled 3,198 kg ha−1. Annual runoff volumes were between 31.2 dm3 m−2 in 2012 and 38.8 dm3 m−2 in 2013, whereas annual soil loss values ranged from 740 kg ha−1 in 2012 to 5,700 kg ha−1 in 2013. Soil erosion values caused by simulated rainfall during field experiments were similar or significantly higher than annual values. Surface runoff was between 31.2 dm3 m−2 in the first experiment and 34.2 dm3 m−2 in the second one, whilst soil loss was between 4,632 kg ha−1 and 8,637 kg ha−1. The achieved experiment results have been compared with soil erosion rate achieved from stationary observations. The results show that runoff and soil loss considerably increase during rainfalls with high amount, intensity and erosivity. Furthermore, individual extreme erosive events may exceed annual (secular) soil erosion processes. Conducted stationary research indicates that annual soil erosion primarily depends on individual rainfall and erosive events, which considerably exceed mean values. In order to evaluate the soil susceptibility to erosion by water in the Drawsko Lakeland, high resolution potential and actual soil erosion risk maps were prepared. The qualitative assessment of soil erosion risk was based on geoinformation technologies. The model considers following conditions affecting the size of soil erosion: slope steepness and aspect, topographic factor LS (unit upslope contributing area), lithology, rainfall erosivity (Modified Fournier Index calculated from monthly and annual precipitation data) and land use and land cover from Corine Land Cover 2006. To prepare the map of potential soil erosion risk, land use from Corine Land Cover was not considered. Thematic maps have been reclassified into a 4-degree division. The results of the soil erosion risk assessment in the Drawsko Lakeland reveal the fact that a majority of its area is characterized by moderate or low erosion risk levels. Areas with high erosion risk are mostly located in the northern part of the Lakeland. The achieved results from stationary observations and field experiments may indicate that the soil loss magnitude significantly increases during rainfall with higher intensity, greater totals and accumulated in time rainfall events. This may confirm the high potential of soil erosion by water processes of above- -average magnitude and intensity in the discharge of material from agricultural used slopes.
Źródło:
Landform Analysis; 2020, 39; 1-106
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stan termiczny Atlantyku Północnego a zlodzenie mórz Barentsa i Grenlandzkiego (1972-1994)
The thermal conditions of the North Atlantic and ice cover of the Barents and Greenland seas (1972-1994)
Autorzy:
Styszyńska, A.
Powiązania:
https://bibliotekanauki.pl/articles/260840.pdf
Data publikacji:
2004
Wydawca:
Stowarzyszenie Klimatologów Polskich
Tematy:
pokrywa lodowa
temperatury powierzchni oceanu
Morze Barentsa
Morze Grenlandzkie
zlodzenie mórz
ice cover
sea surface temperature
Barents Sea
Greenland sea
Opis:
This work deals with correlations between anomalies in SST (sea surface temperature) in the North Atlantic and the sea ice area of the Barents and Greenland seas. This research made use of mean monthly sea ice cover with density >= 10% observed in the Barents and Greenland seas over the period 1972-1994 (calculated on the bases of weekly area of sea ice cover of the above mentioned seas collected in NCDC data set ?1972-1994 Sea Ice Historical Data Set?). The thermal condition of the North Atlantic is characterised by the values of anomalies in mean monthly sea surface temperature (SST) in so called ?controlled grids? (2° x 2°) selected/appointed here by A.A.Marsz (1999a, 2001). Their location is presented in Fig.1. A standard statistical analysis has been used in this research (correlation analysis, regression analysis). The strongest synchronic correlations (observed in the same months) with the sea ice cover of the said seas have been noted in grids located north of the North Atlantic Current and characterising the following waters (Tables 1 and 2): of the Labrador Sea (located within the range of Labrador Current activity) - [50,52], those north of the Gulfstream delta - [40,52] and those located inside the circle of the cyclonic circulation of the North Atlantic - [30,54]. The highest coefficient values of linear correlation, at a level p<0.05 exceeding the statistical significance, were noted in winter months (December, January, February) and those spring ones (April, May, June) as well as in summer - in July and August (the Greenland Sea). There are also several asynchronic correlations. The results of analysis of multiple regression between the SST anomalies and the area of the sea ice cover indicated that the sea areas in which the changeability in their thermal condition has the greatest influence on the formation of the sea ice cover of the said seas are located in the western part of the North Atlantic.
Źródło:
Problemy Klimatologii Polarnej; 2004, 14; 39-57
1234-0715
Pojawia się w:
Problemy Klimatologii Polarnej
Dostawca treści:
Biblioteka Nauki
Artykuł

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