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Wyszukujesz frazę "Petelski, T." wg kryterium: Wszystkie pola

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    Wyświetlanie 1-13 z 13
    Tytuł:
    Rozkłady rozmiarów aerozoli morskich nad morzami europejskiej Arktyki
    Marine aerosol size distribution over Arctic seas
    Autorzy:
    Petelski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/260814.pdf
    Data publikacji:
    1998
    Wydawca:
    Stowarzyszenie Klimatologów Polskich
    Tematy:
    Arktyka
    aerozole morskie
    Arctic
    marine aerosol
    Opis:
    Oceania in years 1995-1997. Sizes distribution were measured with an optical technique by laser particle counter. The size spectral density was found as a function n(r) = exp(ar + b), where: a = -0.249 and b is a function of wind velocity. According to data from 1995 b was b = 0.29U10 + 11.93 and according data to from 1996/1997 b was b = 0.19U10 + 11.63 were U10 wind velocity at 10m above sea level.
    Źródło:
    Problemy Klimatologii Polarnej; 1998, 8; 125-135
    1234-0715
    Pojawia się w:
    Problemy Klimatologii Polarnej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sea salt emission from the coastal zone
    Autorzy:
    Petelski, T.
    Chomka, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/47593.pdf
    Data publikacji:
    2000
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    coastal zone
    emission
    sea salt
    aerosol
    flux
    marine aerosol
    Opis:
    The paper presents the findings of experiments to determine marine aerosol emission from the coastal zone. A relation between aerosol flux and wave energy dissipation was found. The emission fluxes calculated for the distribution of aerosol concentration are proportional to the dissipation of wave energy to the power of 3/4. The calculations were carried out using the experimental data obtained during the TABEX and BAEX experiments.
    Źródło:
    Oceanologia; 2000, 42, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pomiary aerozolowe w Hornsundzie w trakcie XXIX Wyprawy Polarnej PAN
    Aerosol measurements in Hornsund during XXIX PAS Polar Expedition
    Autorzy:
    Rozwadowska, A.
    Petelski, T.
    Zieliński, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/260703.pdf
    Data publikacji:
    2008
    Wydawca:
    Stowarzyszenie Klimatologów Polskich
    Tematy:
    zamglenie arktyczne
    Hornsund
    aerozolowa grubość optyczna
    Arctic Haze
    aerosol optical thickness
    Opis:
    W pracy przedstawiono wyniki pomiarów przeprowadzonych na stacji Hornsund podczas międzynarodowego eksperymentu ASTAR 2007 (Arctic Study of Tropospheric Aerosol, Clouds and Radiation). Stwierdzono, że zjawisko zamglenia arktycznego (ang. Arctic Haze) wystąpiło w czasie kampanii pomiarowej ASTAR 2007 na południowym Spitsbergenie tylko jednego dnia. Przypuszcza się, że ograniczenie wystąpienia zamglenia arktycznego na południowym Spitsbergenie wiosną 2007 roku może być spowodowane m.in. przesu-nięciem się na północ granicy zamarzania morza.
    Intensive measurement periods within the ASTAR Project were carried out in spring 2004 and 2007. Spring is the season in the Arctic when the so-called Arctic Haze phenomenon occurs. The ASTAR 2007 measurement period lasted from 28 March to 16 April. During the campaign at the station in Hornsund the following instruments were used: laser particle counter, sunphotometers, radiometers and pyranometers. Such instrumentation set-up facilitated the determination of the aerosol optical thickness, aerosol concentration and size distribution, upward and downward radiation fluxes. During the 2007 ASTAR campaign the Arctic Haze conditions were observed only one day in the southern Spitsbergen area. A hypothesis was set forth that due to higher up north shift of frozen sea surface areas marine aerosols may noticeably contribute to cleaning of the Arctic atmosphere.
    Źródło:
    Problemy Klimatologii Polarnej; 2008, 18; 161-170
    1234-0715
    Pojawia się w:
    Problemy Klimatologii Polarnej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of meteorological conditions in Svalbard fjords: Hornsund and Kongsfjorden
    Autorzy:
    Cisek, M.
    Makuch, P.
    Petelski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/47827.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    meteorological parameter
    Arctic fjord
    West coast
    Spitsbergen
    Svalbard Fjord
    Hornsund
    Kongsfjorden
    air temperature
    wind speed
    wind direction
    humidity
    cloud cover
    Opis:
    This paper presents the results of a comparison of basic meteorological parameters in two Arctic fjords situated on the west coast of Spitsbergen, the main island of the Svalbard archipelago. Air temperature, wind speed and direction, humidity and cloud cover from the period 2005 to 2016 are described and compared with previous (from 1975) analyses of meteorological conditions in the investigated region. Such a choice of dates coincides with the time the GAME project measurements were carried out. The main goal of this study was to compare meteorological conditions in two fjords: Hornsund and Kongsfjorden, during the time of rapid climate changes. The results are collated with research results available in literature from previous years. We discovered that in the investigated period the climate of the Hornsund region is more oceanic than in Kongsfjorden. The stable level of the difference in climate elements is manifested and is evident mainly through greater amplitudes in air temperatures in Kongsfjorden, and in stronger winds in Hornsund.
    Źródło:
    Oceanologia; 2017, 59, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    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:
    Observations on relations between marine aerosol fluxes and surface-generated noise in the Southern Baltic Sea
    Autorzy:
    Markuszewski, P.
    Klusek, Z.
    Nilsson, E.D.
    Petelski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2079072.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    marine aerosol
    aerosol flux
    noise measurement
    underwater noise
    sea spray
    hydroacoustic measurement
    meteorological condition
    Baltic Sea
    Opis:
    This study presents the preliminary results of combining underwater acoustic ambient noise measurements with those of in-situ sea spray fluxes (SSF). Hydroacoustic measurements (in the frequency range 80 Hz –12.5 kHz) were made using an underwater noise recording system developed at the Institute of Oceanology of the Polish Academy of Sciences which was then deployed in the southern Baltic Sea. The simultaneous measurements of coarse sea spray fluxes (with particle diameters ranging from 0.5 to 47 µm) were made on board the r/v Oceania using the gradient method. Observations were conducted for the duration of the passage of an atmospheric front that lasted 2.5 days (60 hours of measurements). There were significant differences in the sound pressure level (SPL) and aerosol fluxes observed between the first part of measurements (developing wave state) and the second part (developed waves). Wave parameters, such as peak period, significant wave height, wave age, and mean wave slope acquired from the WAM (WAve Model), were used to investigate the impact of wave field properties on noise and aerosol flux measurements. We observed different behaviours in the power spectrum density (PSD) levels of noise for these parameters depending on the wave state development.
    Źródło:
    Oceanologia; 2020, 62, 4PA; 413-427
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lidar observation of aerosol transformation in the atmospheric boundary layer above the Baltic Sea
    Autorzy:
    Makuch, P.
    Sitarek, S.
    Markuszewski, P.
    Petelski, T.
    Stacewicz, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2078926.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    aerosol
    sea spray
    size distribution
    aerosol optical property
    boundary layer
    lidar investigation
    Baltic Sea
    Opis:
    Investigation results of a coarse and accumulation mode of aerosol properties above the Baltic Sea are reported. A most important role in the direct aerosol effect on climate have aerosols from the group of coarse and accumulation mode particles. Overseas in the atmosphere, there is a lot of aerosols from the fine fraction but their impact is not so important as coarse and accumulation mode particles. Sea spray emission from the sea surface takes place over a wide range of aerosol particle size distribution, it is also large in size range which are studying in this work (Lewis and Schwartz, 2004). The discussed range is most important in view of atmospheric optical properties, smaller particles do not have such an influence on scattering as particles from range 0.5—2 μm. The research was performed with a multiwavelength lidar. Due to the application of special software, the aerosol particle size distributions were retrieved from the lidar returns. That provided an opportunity to determine the profiles of the aerosol effective radius. We showed that the aerosol properties depend mainly on the direction of the air mass advection and the wind speed. The impact of the Baltic Sea on the aerosol size distribution is huge in the case of the advection from the open sea. Moreover, the aerosol effective radiuses in the whole boundary layer are much larger in the case of strong than for light wind. Our results suggest that the aerosol flux and the aerosol particle size distribution should be related to the wind speed in the emission function.
    Źródło:
    Oceanologia; 2021, 63, 2; 238-246
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Recent alterations of aerosol concentration, mercury distribution and organic matter deposition in the Arctic
    Autorzy:
    Pempkowiak, J.
    Zielinski, T.
    Petelski, T.
    Zaborska, A.
    Beldowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/11960.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    aerosol concentration
    mercury distribution
    organic matter
    organic carbon
    deposition
    Arctic
    Opis:
    Material fluxes in the Arctic and Antarctic have been, in several respects, strongly affected recently. For example, atmospheric turbidity conditions are frequently subject to strong changes due to haze and dust transport episodes, which can cause considerable perturbations in the radiation balance of the atmosphere beyond regional scale. This, directly or indirectly, contributes to the increased mercury deposition and organic matter fluxes to sediments. The results show that local emissions are not always the most important factors influencing the composition of aerosol in the atmosphere of the west Spitsbergen region. The direct radiative impact of polar aerosols on the surface and at the top of the atmosphere (TOA) need to be studied more closely through both theoretical studies on the aerosol radiative properties and measurements of the surface reflectance characteristics. Mercury dissolved/solid partitioning, both in the unconsolidated, fluffy layer of suspended matter covering the sediments, and the uppermost sediment layer, indicate that the influence of the athmospheric mercury deposition event (AMDE) can prolong well into summer (July/August), and can provide a pathway to the food chain for mercury contained in sediments. Since terrigenous supplies of organic carbon to the Barents Sea are minor (∼5%) compared to the marine supply, modern sediment deposits in this region sequester on average 6.0 g/m2year organic carbon, or 5.8% of the annual integrated pelagic primary production. This burial fraction exceeds, by a factor of 3, the burial fraction derived for the Holocene.
    Źródło:
    Papers on Global Change; 2011, 18
    2300-8121
    1730-802X
    Pojawia się w:
    Papers on Global Change
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of wild forest fires in Eastern Europe on aerosol composition and particle optical properties
    Autorzy:
    Zielinski, T.
    Petelski, T.
    Strzalkowska, A.
    Pakszys, P.
    Makuch, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/49098.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    aerosol optical property
    biomass burning
    Baltic area
    Eastern Europe
    Baltic Sea
    aerosol composition
    Źródło:
    Oceanologia; 2016, 58, 1
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Aerosol physical properties in Spitsbergens fjords: Hornsund and Kongsfjorden during AREX campaigns in 2014 and 2015
    Autorzy:
    Markuszewski, P.
    Rozwadowska, A.
    Cisek, M.
    Makuch, P.
    Petelski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/47891.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Arctic aerosol
    Spitsbergen
    aerosol size
    aerosol optical property
    distribution
    Hornsund
    Kongsfjorden
    meteorological condition
    Opis:
    We present results of measurements of aerosol physical properties conducted on board of r/v Oceania during two cruises to the Spitsbergen region in 2014 (AREX 2014) and 2015 (AREX 2015). Measurements of aerosol size distribution, aerosol scattering coefficient and black carbon concentrations were made in two different Spitsbergen fjords: Hornsund and Kongsfjorden. The aerosol size distribution was measured in the size range from 0.09 μm to 47 μm using two aerosol size distribution spectrometers and a standard condensation particle counter. For the scattering coefficient an integrating nephelometer was used. Black carbon concentration was measured by an aethalometer. Temporal variabilities in physical properties of aerosol observed during the AREX 2014 and AREX 2015 campaigns were much higher than the differences between both fjords. The basic factors influencing aerosol conditions were advection and local generation of marine aerosol. In 2015 an episode of smoke advection was observed in both fjords causing an increase in the mean black carbon concentration from 7–12 ng m−3 to about 60 ng m−3, and an aerosol scattering coefficient at 550 nm from 2–4 Mm−1 to 12–17 Mm−1. Moreover, under certain conditions statistically significant gradients in aerosol optical properties were observed along the fjord axis reflecting an impact of mountains surrounding the fjords.
    Źródło:
    Oceanologia; 2017, 59, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Studies of vertical coarse aerosol fluxes in the boundary layer over the Baltic Sea
    Autorzy:
    Petelski, T.
    Markuszewski, P.
    Makuch, P.
    Jankowski, A.
    Rozwadowska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/48277.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    aerosol flux
    sea aerosol
    wind speed
    air-sea interaction
    marine boundary layer
    aerosol concentration
    Baltic Sea
    Źródło:
    Oceanologia; 2014, 56, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Aerosol Optical Depth variations due to local breeze circulation in Kongsfjorden, Spitsbergen
    Autorzy:
    Cisek, M.
    Petelski, T.
    Zielinski, T.
    Makuch, P.
    Pakszys, P.
    Rozwadowska, A.
    Markuszewski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/47662.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    aerosol optical depth
    aerosol
    modification
    Arctic region
    Kongsfjorden
    breeze circulation
    wind speed
    Spitsbergen
    Opis:
    This paper presents the results of Aerosol Optical Depth (AOD) studies which took place in Ny-Ålesund in the spring of 2014 during the iAREA campaign. The measurements were taken using Microtops II hand-held sunphotometers along the Kongsfjorden, on a path leading from the research village to the fjord opening. Local breeze circulation was observed during the measurement campaign which resulted in an evident increase of AOD along the measurement profile towards the open sea. Using the observed AOD, changes over the open sea have been calculated and the location of the breeze front has been determined.
    Źródło:
    Oceanologia; 2017, 59, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Observations of new particle formation events in the South-Eastern Baltic Sea
    Autorzy:
    Plauskaite, K.
    Ulevicius, V.
    Spirkauskaite, N.
    Bycenkiene, S.
    Zielinski, T.
    Petelski, T.
    Ponczkowska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/48201.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Baltic Sea
    meteorological parameter
    chemical parameter
    solar radiation
    coastal region
    coastal site
    marine environment
    Mediterranean coastal zone
    Opis:
    New particle formation and growth were observed at a coastal site (Preila station, Lithuania) during 1997 and 2000–2002. The total amount of data analysed covers 291 one-day periods, 45 (15%) of which were long-term, new particle formation days. Short-term nucleation events (from a few minutes to one hour) and long-term events (from one to eight hours) were identified. The mean particle growth rate, condensation sink and condensable vapour source rate during nucleation events were 3.9 nm h−1, 1.45 × 10−3 cm−3 s−1 and 7.5 × 104 cm−3 s−1 respectively. The average formation rate J10 was 0.4 cm−3 s−1. The nucleation events were accompanied mainly by air masses transported from the north (43%) and north-west (19%). Meteorological parameters and trace gas (O3, SO2, NO2) concentrations were also analysed. It was found that nucleation events are related to high levels of solar radiation.
    Źródło:
    Oceanologia; 2010, 52, 1; 53-75
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-13 z 13

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