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    Wyświetlanie 1-11 z 11
    Tytuł:
    Uwarunkowania klimatyczne aktywności geomorficznej, Wyspa Króla Jerzego, Szetlandy Południowe
    Climatic conditions of geomorphic activity, King George Island, South Shetlands
    Autorzy:
    Zwoliński, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/260887.pdf
    Data publikacji:
    2002
    Wydawca:
    Stowarzyszenie Klimatologów Polskich
    Tematy:
    aktywność geomorficzna
    Szetlandy Południowe
    Wyspa Króla Jerzego
    geomorphic activity
    South Shetland Islands
    King George Island
    Opis:
    The paper presents the proposal of a method for an indirect evaluation of geomorphic activity on ice-free areas on King George Island (South Shetlands, West Antarctica) through analysis of climatic conditions affecting the mobility of mineral matter. It was assumed that weather conditions affected the movement of mineral matter, which in turn determined geomorphic activity on ice-free areas, which currently occupy over 25 km2 of Admiralty Bay. On the basis of encoded values of six variables: air temperature, wind speed, rainfall, sunshine, ground temperature, and thickness of snow cover, diurnal types of the efficiency of mineral matter circulation were determined which were then clustered using the k-means method. After the cumulation of results for 7-day periods, a total of 59 homogeneous periods were obtained characterised by diurnal types of geomorphic activity (1, 2 and 3) in the observation period from April 10, 1990 to January 13, 1994. The summer season is a period with a high efficiency of mineral matter circulation and geomorphic activity, while winter time is one with a low efficiency of mineral matter circulation and geomorphic activity. Periods with an average efficiency of mineral matter circulation and geomorphic activity correspond to ascending and descending transition times. It is possible to associate the descending period with the autumn season in the temperate zone, while the ascending period, with spring-time.
    Źródło:
    Problemy Klimatologii Polarnej; 2002, 12; 33-63
    1234-0715
    Pojawia się w:
    Problemy Klimatologii Polarnej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wiatry huraganowe w 2008 roku w Zatoce Admiralicji, Wyspa Króla Jerzego, Antarktyda Zachodnia
    Hurricane winds during 2008 year in Admiralty Bay, King George Island, West Antarctica
    Autorzy:
    Wierzbicki, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/887060.pdf
    Data publikacji:
    2009
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    Antarktyda Zachodnia
    Zatoka Admiralicji
    huragany
    rok 2008
    wiatry
    wyspa Krola Jerzego
    cyrkulacja atmosferyczna
    Opis:
    Meteorological data collected by the author at Arctowski station from March to December 2008 revealed 72 days with hurricane winds in the Admiralty Bay. The results were compared with synoptic maps, wind data from Ferraz station and older data from Arctowski station. Winds in September 2008 reached the highest velocities (mean 32.0 m·s–1, gusts 80 m·s–1) ever measured in Admiralty Bay. 49% events of hurricane winds occurred while cold fronts were passing. Topography of King George Island affects winds distribution inside the bay. Hurricane winds accelerate ablation of glaciers on King George Island and cause serious problems for fi eldwork and maintaining of research stations in Antarctica.
    Źródło:
    Scientific Review Engineering and Environmental Sciences; 2009, 18, 2[44]
    1732-9353
    Pojawia się w:
    Scientific Review Engineering and Environmental Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Participation of Employees and Students of the Faculty of Geodesy and Cartography in Polar Research
    Autorzy:
    Pasik, M.
    Adamek, A.
    Rajner, M.
    Kurczyński, Z.
    Pachuta, A.
    Woźniak, M.
    Bylina, P.
    Próchniewicz, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/106709.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    badania polarne
    Spitsbergen
    Antarktyda
    Wyspa Króla Jerzego
    polar research
    Antarctic
    King George Island
    Opis:
    This year the Faculty of Geodesy and Cartography, Warsaw University of Technology celebrates its 95th jubilee, which provides an opportunity to present the Faculty’s rich traditions in polar research. Employees and students of the faculty for almost 60 years have taken part in research expeditions to the polar circle. The article presents various studies typical of geodesy and cartography, as well as miscellany of possible measurement applications and geodetic techniques used to support interdisciplinary research. Wide range of geodetic techniques used in polar studies includes classic angular and linear surveys, photogrammetric techniques, gravimetric measurements, GNSS satellite techniques and satellite imaging. Those measurements were applied in glaciological, geological, geodynamic, botanical researches as well as in cartographic studies. Often they were used in activities aiming to ensure continuous functioning of Polish research stations on both hemispheres. This study is a short overview of thematic scope and selected research results conducted by our employees and students.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2016, 100; 235-252
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Warunki meteorologiczne na Stacji Arctowskiego (Wyspa Króla Jerzego, Antarktyka) w 2012 roku
    Meteorological conditions at the Arctowski Station (King George Island, Antarctic) in 2012
    Autorzy:
    Kejna, M.
    Araźny, A.
    Sobota, I.
    Piszczek, J.
    Łabno, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/260671.pdf
    Data publikacji:
    2013
    Wydawca:
    Stowarzyszenie Klimatologów Polskich
    Tematy:
    warunki meteorologiczne
    Stacja H. Arctowskiego
    zmiany klimatu
    King George Island
    Antarktyka
    meteorological conditions
    Arctowski Station
    climate change
    Antarctica
    Opis:
    W artykule przedstawiono przebieg warunków meteorologicznych na Stacji H. Arctowskiego (Wyspa Króla Jerzego, Szetlandy Pd., Antarktyka) w 2012 roku. Pomiary prowadzono za pomocą automatycznej stacji meteorologicznej Davis Vantage Pro+ w interwale godzinnym. Przeanalizowano zmienność ciśnienia atmosferycznego, promieniowania słonecznego, temperatury i wilgotności powietrza oraz kierunku i prędkości wiatru w cyklu rocznym i dobowym. Uzyskane wyniki porównano z dłuższym okresem pomiarowym (1977-1999) oraz z równoległymi danymi z innych stacji prowadzących pomiary meteorologiczne na Wyspie Króla Jerzego.
    This paper presents the meteorological conditions at the Arctowski Station (King George Island, South Shetland Islands, Antarctica) in 2012. Measurements were carried out using an automatic weather station Davis Vantage Pro+. At the Arctowski Station the global solar radiation in the period from January 19 to December 31, 2012 amounted to 2985.3 MJ.m-2 (8.60 MJ.m-2.day-1). Taking into account the full year from 1 February 2012 to 31 January 2013, this totaled to 2909.6 MJ.m-2 (7.97 MJ.m-2.day-1). The highest monthly value of solar radiation occurred in December, 567.8 MJ.m-2 (18.32 MJ.m-2.day-1) and the lowest in June, 10.4 MJ.m-2 (0.35 MJ.m-2.day-1). The average annual air temperature was –1.5°C, with the highest monthly average in January (2.4°C) and lowest in June (–5.6°C). The maximum of air temperature was 9.6°C, and the minimum –17.2°C. In 2012 the average atmospheric pressure at sea level was 989.0 hPa, with a characteristic semi-annual oscillation of pressure with two minima: in summer (January 985.3 hPa) and winter (June 979.4 hPa) and two maxima: in autumn (April 996.7 hPa) and spring (September 994.9 hPa). The lowest pressure was 946.8 hPa and the highest 1020.7 hPa. At the Arctowski Station SW, NE, E and SE winds dominate in accordance with gradient of air pressure and the local orography. The average wind speed at 2 m above the ground was 4.8 ms-1, with maximum in winter (June 6.1 ms-1) and minimum in summer (December 3.1 ms-1). The maximum wind speed exceeded 40 ms-1. Relative air humidity was 83%. There is less humidity in summer (January 78%) than in winter (July, 87%). In the course of humidity indicate the day with low humidity during foehn winds. Arctowski Station area is warmer to other regions of King George Island (about 1°C in summer and 1.5°C in winter). On the King George Island and Antarctic Peninsula area occurred increase of air temperature. At the neighboring station Bellingshausen in the years 1968-2012 air temperature rise by 0.17°C/10 years.
    Źródło:
    Problemy Klimatologii Polarnej; 2013, 23; 43-56
    1234-0715
    Pojawia się w:
    Problemy Klimatologii Polarnej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zjawiska lodowe na Zatoce Admiralicji w roku 1999 (Wyspa Króla Jerzego, Szetlandy Południowe)
    Ice phenomena in the Admiralty Bay in 1999 (King George Island, South Shetland Islands)
    Autorzy:
    Zblewski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/260869.pdf
    Data publikacji:
    2001
    Wydawca:
    Stowarzyszenie Klimatologów Polskich
    Tematy:
    zjawiska lodowe
    Zatoka Admiralicji
    Wyspa Króla Jerzego
    Szetlandy Południowe
    ice phenomena
    Admiralty Bay
    King George Island
    South Shetland Islands
    Opis:
    In 1999 hydrometeorological observations were carried out at H. Arctowski Station. Ice phenomena in the Admiralty Bay and in the visible neighbouring area of the Bransfield Strait were, among others, the subject of these observations. The Admiralty Bay is a typical fjord and is the biggest bay in the Southern Shetlands archipelago, covering 122.08 km2. Winter ice cover formation of this area varies in different years. Once every 4-5 years the waters of the Bay do not freeze and the ice observed there originates from the Bransfield Strait. During the whole year glacial ice (brash ice, growlers, bergy bits and icebergs) originating from local sources and from other sea areas can be observed in the Admiralty Bay. In 1999 the process of the ice cover formation was characterised by variability both in time and space. During the observational period floating ice formed ice fields of different shapes and concentration. Brash ice and growlers often covered the weatter shore during high tidal waters. The icebergs in the said period are mainly observed at the entrance of the Bay (in the region of the Syrezol Rocks) less frequently inside the Bay. They usually drifted in the axial part of the Bay hardly ever reaching its central part. The autochthonous sea ice formed only near the shore and during the whole year it was the inflowing ice which was predominant. First forms of new ice in the waters of the Admiralty Bay occurred in the second decade of June. These forms were initial stage forms (frazil ice and grease ice) which never changed into more advanced form of sea ice. At the end of June the process of ice inflow from the Bransfield Strait started. The allochthonous ice reached mainly the axial and central parts of the Bay, however there were few cases noted in which the ice reached the auxiliary bays. The observations showed that the character of the main features of the winter sea ice cover of the Admiralty Bay was predominantly influenced by wind and ice conditions of the Bransfield Strait. In 1999 the Admiralty Bay was not covered by consolidated ice but by drifting ice which changed its position and edge very quickly. The course of ice phenomena in winter season 1999 had a mild character and according to Kruszewski's categories (1999) defining the ice conditions in the Admiralty Bay may be classed as number one.
    Źródło:
    Problemy Klimatologii Polarnej; 2001, 11; 113-120
    1234-0715
    Pojawia się w:
    Problemy Klimatologii Polarnej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Procesy deglacjacji na obszarze SSSI No. 8 i ich uwarunkowania klimatyczne oraz hydrologiczne (Zatoka Admiracji, Wyspa Króla Jerzego, Szetlandy Południowe)
    The Processes of Deglaciation in the Region of SSSI No.8 and thier Climatic and Hydrological Conditions
    Autorzy:
    Battke, Z.
    Marsz, A. A.
    Pudełko, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/260899.pdf
    Data publikacji:
    2001
    Wydawca:
    Stowarzyszenie Klimatologów Polskich
    Tematy:
    procesy deglacjacji
    Zatoka Admiracji
    Wyspa Króla Jerzego
    Szetlandy Południowe
    warunki klimatyczne
    warunki hydrologiczne
    deglacjacja
    processes of deglaciation
    Admiralty Bay
    King George Island
    South Shetland Islands
    climatic conditions
    hydrological conditions
    deglaciation
    Opis:
    This work deals with the processes of deglaciation occurring in the region of SSSI No 8 (Site of Special Scientific Interests No 8) located on the western coast of the in the vicinity of Polish H. Arctowski Station over the period 1979-1999. The location of the SSSI is shown in Fig. 1. The basis of this work is comparison between the category of the surface of the area on the charts from 1979 (Furmańczyk & Marsz, 1980) and on the chart from 1986 (Battke, 1990) and the ground measurements carried out in that area in 1999 (Battke & Pudełko, unpubl.). The categories of area were computed on maps with the help of a planimeter: - glaciated areas, - non-glaciated areas (formed by mineral grounds), - sea areas. The accuracy of total measurements of the area is not lower than about 0.2 km2. The results of cartometric measurements are given in Table 1. Over the period 1979-1999 the area of SSSI decreased by 0.86 km2 as an effect of regression of icy cliffs both of Ecology and Baranowski Glaciers and due to accompanied abrasion process. At the same time the glaciated area within the borders of SSSI decreased by 6.93 km2 and the ice free area increased by 6.08 km2. In this way the mean rate of deglaciation of the 21-year period reaches about 0.33 km2 per year. Over the 21-year period the ice free area within the borders of SSSI incresed three times (from 2.98 km2 to 9.06 km2) which results in various consequences on the physico-geographical and biological prosesses in the region of the Admiralty Bay. In the period 1978-1986 the processes of deglaciation observed north of SSSI in the region of Ecology Glacier were faster than in other regions. Over the period 1986-1999 much faster decrease in the glaciated area was noted in the south of the area, in the region of Baranowski Glacier and Tower Glacier spatial changes are presented in Fig. 2. The analysis of reasons having influence on so advance processes of deglaciation indicated to two factors i.e. climatic and hydrological that are both responsible for the process. Over the period 1978-1998 in region of the Admiralty Bay the increase in air temperature during the Antarctic summer (period December - February; trend +0.022°C/year, statistically not significant) was noted. At the same time the period in which ablation was observed (warmer November and March) was longer. The annual sums of precipitation in the same period indicate to the presence of statistically significant negative trend (-5.7 mm/year, p < 0.005). This resulted in the change in the glacier mass balance at the level 2 m. above sea level: from -115 g/cm2/year in 1979 to -146 g/cm2/year in 1998 (Fig. 3). The evaluated trend of change in mass balance is -1.56 g/cm2/year and is not statistically significant. The period during which sea ice cover is not observed also lasts longer and the ice conditions there became visibly milder. This enables the thermal abrasion to last longer and causes more active regression of ice cliffs. On the shore of the Bransfield Strait, between the Admiralty Bay and the Maxwell Bay entrance a deep cove was formed in the ice coast over the period 1985-1988. This resulted in the increase in inclination of the southern slopes of ice forming the Warszawa Ice cap and forced the volume of ice flowing towards the Bransfield Strait to increase. In this way the volume of ice flowing down the Warszawa Ice Cap eastward, to SSSI No. 8 area, decreased. The explanation of reasons responsible for the ice conditions becoming milder can be found in large scale changes in sea surface temperature of the Southern Ocean of the sea area located West of the Antarctic Peninsula (a strong positive trend SST is marked in the period from October to January; in December +0.058°C/year) and in changes in atmospheric circulation. Both these factors, i.e. the increase in the negative values of the ice masses balance and the decrease in the volume of ice flowing down on the SSSI No. 8 area act in the same direction, causing that the deglaciation process in that region occurs in an exceptionally intensive way. Due to such great intensity of the deglaciation processes occurring on the surface of SSSI in that area, this area can be regarded as a unique object of ecological and environmental research.
    Źródło:
    Problemy Klimatologii Polarnej; 2001, 11; 121-135
    1234-0715
    Pojawia się w:
    Problemy Klimatologii Polarnej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Warunki meteorologiczne w rejonie Stacji Arctowskiego (Wyspa Króla Jerzego, Antarktyka) w okresie 19.01-19.02.2012 roku
    Meteorological conditions in the Arctowski Station region (King George Island) in the period 19.01-19.02.2012
    Autorzy:
    Kejna, A.
    Sobota, I.
    Araźny, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/260973.pdf
    Data publikacji:
    2012
    Wydawca:
    Stowarzyszenie Klimatologów Polskich
    Tematy:
    warunki meteorologiczne
    topoklimat
    Stacja H. Arctowskiego
    Antarktyka
    meteorological conditions
    topoclimate
    Arctowski Station
    Antarctica
    Opis:
    W artykule przedstawiono zróżnicowanie warunków meteorologicznych w rejonie Stacji H. Arctowskiego położonej na Wyspie Króla Jerzego (Szetlandy Południowe, Zachodnia Antarktyka) w okresie od 19 stycznia do 19 lutego 2012 r. Pomiary prowadzono na obszarze niezlodowaconym oraz na lodowcach Ekologii i Sphinx. Przeanalizowano różnice pomiędzy stanowiskami w zakresie temperatury i wilgotność powietrza (6 stanowisk), a ponadto promieniowania słonecznego oraz kierunku i prędkości wiatru (3 stanowiska). Stwierdzono znaczne zróżnicowanie topoklimatyczne związane z deniwelacjami terenu, ekspozycją, właściwościami podłoża oraz lokalną cyrkulacją atmosferyczną. Różnice te zmieniają się w cyklu dobowym oraz są ściśle uzależnione od czynników insolacyjno-radiacyjnych i cyrkulacyjnych.
    The topoclimatic research carried out in the summer 2012 (January 19 - February 19) showed diversity of meteorological conditions in the H. Arctowski Station surroundings. The analysed period had changeable weather conditions. An average level of solar radiation at the Arctowski Station was 14.3 MJ.m-2 a day, while its daily sums ranged from 1.7 to 24.6 MJ.m-2. Atmospheric pressure oscillated considerably from day to day. Its mean value was 980.8 hPa. The highest temperatures were recorded on the coastal lowland where the H. Arctowski Station was built (2.4°C). Air temperature at the front of the Ecology (1.6°C) and Sphinx (1.8°C) Glaciers is lower due to frequent influx of cool air masses from the glacial interior of the island. On the non-glaciated area air temperatures lower with the altitude. Between the Point Thomas and Arctowski Station the temperature difference was 0.81°C/100 m and between Jardine Peak and Arctowski Station was 1.18°C/100 m. These higher lapse-rates inform about frequent föhn processes which take place on the leeward side of the King George Island. The largest temperature lapse-rate over the glaciated areas is recorded at the contact zone between the glacier and its marginal zone. These differences grow when insolation is intensive, as it results in significant heating of the morainic ground, while the temperatures above the glacial surface remain low (ablation takes place at 0°C). Relative air humidity in the H. Arctowski Station region is high due to a large share of maritime air masses. Mean relative humidity on the seacoast ranged from 81% at the Arctowski Station and grew with the altitude to 91 on the Jardine Peak. The course of the relative humidity is significantly influenced by föhn winds, during which humidity drops to 60%. Lower relative air humidity is also recorded when dry continental air masses inflow from the sector between E through S to SW. Wind direction at the three analysed stations corresponds with the local relief layout. The prevailing winds at the H. Arctowski Station include the winds from the sectors SW (28,6%), NW (10,9%), and SE (7,9%). The most frequent winds at the front of the Ecology and Sphinx Glaciers are katabatic ones blowing along the tonque of glaciers from the Warszawa Icefield. Considering the diurnal course, the highest wind velocities at all the stations are recorded around noon as this is the time thermal and pressure lapse-rates increase above varied ground (land, maritime and glacial). Topoclimatic diversity in the H. Arctowski Station area depends on weather conditions. It grows when the weather shows insolation and radiation character, and it lowers at high cloudiness.
    Źródło:
    Problemy Klimatologii Polarnej; 2012, 22; 103-116
    1234-0715
    Pojawia się w:
    Problemy Klimatologii Polarnej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ujemny trend rocznych sum opadowych na Stacji im. H. Arctowskiego (Wyspa Króla Jerzego, Szetlandy Pd., Antarktyka Zach.)
    The negative trend of annual precipitation sum at the Arctowski Station (King George Island, South Shetland Islands, West Antarctica)
    Autorzy:
    Marsz, A. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/260969.pdf
    Data publikacji:
    1998
    Wydawca:
    Stowarzyszenie Klimatologów Polskich
    Tematy:
    Szetlandy Południowe
    Antarktyka Zachodnia
    opady
    sumy opadowe
    Stacja Arctowskiego
    South Shetland Islands
    West Antarctica
    Arctowski Station
    precipitation
    precipitation sum
    Opis:
    The paper treats variabiliry of annual precipitation sum registred at the Arctowski Station for the 1978-1996 time period. The annual sum of precipitation show a big variability, its to possible to distinguish three periods in their course. For the period 1978-1985 mean annua1 precipitation sum amounted 560 mm (δn = 26 mm), for the next period (1986-1989) precipitation sum was characterised by a very strong variability (min = 377, max = 630 mm) mean precipitation sum amounted 472 mm,where δn = 95.4 mm. For the last, third period (1990-1996) mean precipitation sum amounted 456 mm (o n = 26.1 mm) (tab. l, fig. 1). Occurrence of strong periodicty every 6.0, 2.0, 4.50, 2.57 and 9.0 years has been found for the course of annual precipitation sum (fig. 2). Also, the spectrum analysis of a course of monthly precipitation sum in March (maximum of precipitation) and August (minimum of precipitation) has been led. Analysis showed the existence strong common periodicity (for annual and month sum: maximum and minimum) every 2.00, 3.60 and 6.00 years. Analysis of amplitudes and phases of periodicity do not explain the occurrence of so big variability of observed precipitation sum. The strong negative trend of annual precipitation sum, significant from the statistic point of view occurs here (fig. 3, formula l). Negative trends were also found in: the course of mean monthly precipitation sum for 8 from 12 monts of a year (the strongest and significant in February), in the course of number of days with measurable precipitation, in the mean annual twenty-four-hours precipitation sum. The negative trend of precipitation sum at Arctowski Station is not conformable to signalised (Ackley S., Bentley C., Foldvik A., Clarke A., King J, Priddle J. 1996.) positive trend of precipitation sum, which appears on the west coast of the Antarctic Peninsula. The examination of relation between precipitation sum at the Arctowski Station with walues of SOI shows, that the strongest relations between annual and maximum precipitation sum in a given year appears with one year delay (SOI of the previous year - precipitation of the present year), whereas in case of minimum sum the strongest relation appears with three years defay (tab. 2). The significant relation between monthly precipitation sum at the Arctowski Station and values of SOI appears in January and February (fig. 4, the strongest correlation with values of SOI are the end of winter and spring of the previous year). The negative trend of SOI correspond with the negative annual precipitation sum at the Arctowski Station. The observed environmental results, which confirms decrease of precipitation sum at the Arctowski Station has been shortly discussed (decrease of fields of permanent snow, disapperance of lakes and seasonal streams, drying of seashore terraces, hastening of ablation of glaciers ice from a surrounding glaciers, hastening of deglaciation processes).
    Źródło:
    Problemy Klimatologii Polarnej; 1998, 8; 63-77
    1234-0715
    Pojawia się w:
    Problemy Klimatologii Polarnej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Głębokie zimowe inwersje temperatury na nadmorskiej terasie okolic Stacji im. H. Arctowskiego (wyspa Króla Jerzego, Szetlandy Pd., Antarktyka Zach.)
    Deep winter temperature inversions in the vicinity of Arctowski Station (King George Island, South Shetland Islands, West Antarctica)
    Autorzy:
    Kruszewski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/260747.pdf
    Data publikacji:
    1998
    Wydawca:
    Stowarzyszenie Klimatologów Polskich
    Tematy:
    Szetlandy
    Antarktyka Zachodnia
    inwersje temperatury
    inwersje radiacyjne
    Stacja Arctowskiego
    Shetland Islands
    West Antarctica
    temperature inversions
    radiation inversions
    Arctowski Station
    Opis:
    Paper presents results of investigations on temperature inversions, carried out during XIX Antarctic Expedition PAS in 1995, Temperature values taken from thermograph readings at Arctowski Station (3 m asl) and Point Thomas (173 m asl, situated 850 m, WNW from Station) were used to find periods of time with temperature inversions, Seven cases, analysed in this paper. Were selected as deep inversions (mean temperature gradient counted from hourly values was higher than 1°C/100 m), All presented inversions were radiation type, accompanied by calms and relatively small total nebulosity, except three cases, when nebulosity was the effect of inversion Influence of local orographic conditions on deepening temperature inversions is strong, but the main factor for it's forming is anticyclonic situation in the region of South Shetland Islands (accompanied by calms) and sea ice conditions. All analysed inversions were fonned during months with fast ice cover existence in Admiralty Bay and very close ar close ice fields on Bransfield Strait. In other ice conditions deep temperature inversions were not recorded, Minimum air temperatures at Arctowski Station recorded in July, August and September 1995 were measured during inversions. Maximum difference in air temperature between Point Thomas and Arctowski Station was recorded on July 22 (l4°C), These cases let to make conclusion, that probably all extremely low temperatures recorded during severe winters at Arctowski Station were measured in inversion conditions.
    Źródło:
    Problemy Klimatologii Polarnej; 1998, 8; 47-62
    1234-0715
    Pojawia się w:
    Problemy Klimatologii Polarnej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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