Informacja

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

Wyszukujesz frazę "air humidity" wg kryterium: Temat


Wyświetlanie 1-5 z 5
Tytuł:
Przebieg roczny wilgotności względnej w Arktyce Norweskiej w okresie 1971-2000
Annual course of relative air humidity in the Norwegian Arctic from 1971 to 2000
Autorzy:
Araźny, A.
Powiązania:
https://bibliotekanauki.pl/articles/260941.pdf
Data publikacji:
2003
Wydawca:
Stowarzyszenie Klimatologów Polskich
Tematy:
wilgotność powietrza
Arktyka Norweska
air humidity
Norwegian Arctic
Opis:
The paper presents the analysis of the spatial variability of relative humidity in the Norwegian Arctic during the year (Fig.1, Table 2) for 6 meteorological stations (Table 1). We determined the frequency of relative humidity according intervals (Fig. 2) and examined its connection with atmospheric circulation indices (Table 3, Fig. 3). In the Norwegian Arctic 3 types of courses of the relative humidity have been distinguished on the basis of mean monthly values, amplitudes and occurrence frequency in distinguished intervals: 1) very wet - characterised by monthly and annual mean values of the relative humidity higher than 80%, small annual amplitudes up to 10%. This type includes the stations Bjornoya, Hopen i Jan Mayen. During the year at these stations very wet air dominates (236, 218 and 175 days, respectively). 2) wet - characterised by large annual amplitudes over 10%. Mean monthly values exceeding 80% occur only in summer and early autumn. This type occurs at the stations Hornsund and Ny-Alesund. At these stations wet air is the most frequent: 181 and 141 days during the year, respectively. 3) moderately wet - characterised by even level in every month below 80%, very small annual amplitude up to 5%. This type occurs at Svalbard Lufthavn where wet (171 days) and moderately dry (135 days) air is the most frequent.
Źródło:
Problemy Klimatologii Polarnej; 2003, 13; 107-115
1234-0715
Pojawia się w:
Problemy Klimatologii Polarnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zróżnicowanie przestrzenne wilgotności względnej powietrza w północnej części równiny Kaffiøyra i na Lodowcu Waldemara (NW Spitsbergen) w okresie od września 2010 do sierpnia 2013
Spatial diversity of air relative humidity in the northern part of the Kaffiøyra plain and the Waldemar Glacier (NW Spitsbergen) from September 2010 to August 2013
Autorzy:
Przybylak, R.
Araźny, A.
Ulandowska-Monarcha, P.
Powiązania:
https://bibliotekanauki.pl/articles/260842.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Klimatologów Polskich
Tematy:
Arktyka
Spitsbergen
klimat
wilgotność względna powietrza
cyrkulacja atmosferyczna
Arctic
climate
relative air humidity
atmospheric circulation
Opis:
W artykule przedstawiono zróżnicowanie przestrzenne wilgotności względnej powietrza w północnej części rejonu Kaffiøyry i na Lodowcu Waldemara w okresie IX 2010 – VIII 2013. W okresie od września 2010 do sierpnia 2011, dla którego istnieją najpełniejsze dane dla wszystkich stanowisk pomiarowych, najwyższe wartości wilgotności względnej zostały zanotowane na szczytach górskich (89%) i na polu firnowym Lodowca Waldemara (86%). Najniższa wartość tego parametru wystąpiła natomiast na tundrze (79%). W całym okresie badawczym, na podstawie zredukowanej liczby stacji, stwierdzono, iż najsuchszy był punkt Kaffiøyra-Heggodden (KH, 83%) zlokalizowany na morenie czołowo-bocznej Lodowca Aavatsmarka, a najbardziej wilgotno było na polu firnowym Lodowca Waldemara (LW2, 85%). Wilgotność względna na badanym obszarze wykazała przeważnie wzrost wartości wraz ze wzrostem wysokości nad poziom morza. Najwilgotniejsze powietrze w rejonie badań towarzyszyło typom cyrkulacji Sc+SWc+Wc i Sa+SWa+Wa (anomalie dodatnie od 7 do 9%), a najsuchsze (anomalie ujemne wahające się od 6% do 9%) podczas napływu mas powietrza z sektora wschodniego, niezależnie od rodzaju układu barycznego. Najmniejsze różnice (do ok. 1-2%) wystąpiły w sytuacjach bezadwekcyjnych reprezentowanych przez typ Ka+Ca.
This paper presents the spatial diversity of air relative humidity (2 m a.g.l.) in the northern part of the Kaffiøyra Plain and on the Waldemar Glacier (NW Spitsbergen), from September 2010 to August 2013, based on measurements taken at six sites located in different environments (Table 1, Figure 1). Results are described for years and seasons, defined as: autumn (Sep-Oct), winter (Nov-Mar), spring (Apr-May) and summer (Jun-Aug). In the period from September 2010 to August 2011, the highest relative humidity was noted on mountain ridges (89%) and in upper part of the Waldemar Glacier (86%). The lowest value of humidity (79%) occurred at a tundra site called ‘Terrace’, located about two kilometres from the coast (Table 2, Figure 2). In the entire period of observations, for which a reduced number (3) of observation sites exists, drier air (83%) was observed at the Kaffiøyra-Heggodden (KH) site, located in the terminal-lateral moraine of the Aavatsmark Glacier, whereas the wettest air (85%) was measured at the firn part of the Waldemar Glacier (LW2). Relative humidity generally shows an increase as altitude increases above sea level. The marked influence of atmospheric circulation on relative humidity was also noted. In the study period, as compared to long-term values from 1951 to 2006, a decrease in the frequency of occurrence of anticyclonic types and an increase in the frequency of cyclonic types (by 10% and 6.8%, respectively) was also noted (Figure 3). Most humid air in the study area occurred within the circulation types Sc+SWc+Wc and Sa+SWa+Wa (positive anomalies varied from 7% to 9%), and the driest (negative anomalies from 6% to 9%) during air advection from the eastern sector within both anticyclonic and cyclonic weather patterns (Table 3 and Figure 4). The smallest differences (up to 2%) were connected with non-advectional weather type Ka+Ca.
Źródło:
Problemy Klimatologii Polarnej; 2014, 24; 25-36
1234-0715
Pojawia się w:
Problemy Klimatologii Polarnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stosunki termiczne i wilgotnościowe w Zatoce Treurenberg i na masywie Olimp (NE Spitsbergen) w okresie od 1.VIII.1899 - 15.VIII.1900
Thermal and humidity relations in Treurenberg Bay and Massif Olimp (NE Spitsbergen) from 1st August 1899 to 15th August 1900)
Autorzy:
Przybylak, R.
Dzierżawski, J.
Powiązania:
https://bibliotekanauki.pl/articles/260665.pdf
Data publikacji:
2004
Wydawca:
Stowarzyszenie Klimatologów Polskich
Tematy:
temperatury powietrza
wilgotność powietrza
Spitsbergen
air temperature
atmospheric humidity
Opis:
The paper describes weather conditions (based on air temperature and humidity) in Treurenberg Bay and Massif Olimp (NE Spitsbergen) for the period from 1st August 1899 to 15th August 1900. The hourly data of the meteorological elements under analysis were collected by the Swedish-Russian scientific expedition, which was sent to Spitsbergen in 1899 to measure an arc of the Earth?s meridian. During the expedition two meteorological stations were established (Fig. 1): the main one (21.9 m a.s.l.) located by the sea in Treurenberg Bay (hereafter 'Treurenberg') and a secondary station (408 m a.s.l.) situated on Massif Olimp (hereafter 'Olimp'). The quality of data were checked and assessed as being very good, especially for the Treurenberg station. The air temperature (T) in Treurenberg in the annual march was highest in August (mean monthly T = 2.1°C) and lowest in March (-27.0°C) (Tab. 2, Fig. 2). Mean yearly T was equal to -9.8°C. The values of T in this part of Spitsbergen are significantly lower than in the western coastal part of the island where, for example, the average annual T for the period 1975-2000 was about twice as high (see Przybylak et al. 2004). On the other hand, mean monthly daily T ranges in Treurenberg are greater (Fig. 3). Day-to-day T changes in the annual cycle were greatest in the cold half-year, and lowest in summer (Fig. 4). These changes are lower here than in the western coastal part of Spitsbergen. Mean monthly daily courses of T are clearest from April to September, showing maximum T in the afternoon, and minimum in the early morning hours (Fig. 5). From October to March (but especially during the polar night) the average daily courses were smooth. Air humidity in Treurenberg was characterized using three commonly used variables: water vapor pressure, relative humidity, and saturation deficit. Due to very low T and quite a large thermic continentality of the climate in NE Spitsbergen, water vapor pressure in Treurenberg is lower than in the western coastal part of Spitsbergen. The highest values in Treurenberg occurred in summer (on average about 6 hPa) and the lowest in late winter (below 1 hPa) (Tab. 2, Fig. 6). Generally, similar relations in the annual march are also seen for two other air humidity variables (see Tab. 2, Fig. 6). The annual cycles of day-to-day changes of all humidity variables in Treurenberg are not clear, as they consist of many maximums and minimums (Fig. 7). These changes are lower here than in other parts of Spitsbergen (see Table 15 in Przybylak 1992a). Mean daily courses of relative humidity are smooth for most months. Only in April and in the period from June to September do we see normal daily cycles with lowest values in 'day' hours and highest values in 'night' hours (Fig. 9). The annual course of T in the Olimp station is similar to that occurring in Treurenberg (Figs. 2 and 10). Of course, the upper station was colder, but only by 1oC for mean annual values (Fig. 11). The drop of T in the Treurenberg region - a drop that is lower than is normally observed in the atmosphere (0.6oC/100 m) - was probably caused by measurement errors (the thermograph at the Olimp station was wrapped in thin material in order to stop the snow accumulating around the metallic sensor). Only limited air humidity data were gathered for the Olimp station due to measurement problems of this element in cold half-year. Therefore, most observations were made only in summer, and they show that the relative humidity was in most cases greater here than at the Treurenberg station. The investigation shows that weather conditions in the NE part of Spitsbergen differ significantly from those observed in the western coastal part of the island. Both T and air humidity are significantly lower in the study area, and these differences in the case of T are especially large in winter.
Źródło:
Problemy Klimatologii Polarnej; 2004, 14; 133-147
1234-0715
Pojawia się w:
Problemy Klimatologii Polarnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zróżnicowanie temperatury i wilgotności wyględnej powietrza w rejonie Kaffiøyry (NW spitsbergen) w sezonie letnim 2014 roku
Spatial differentiation of air temperature and relative air humidity in the Kaffiøyra region (NW Spitsbergen) in summer season 2014
Autorzy:
Kejna, M.
Ulandowska-Monarcha, P.
Strzyżewski, T.
Powiązania:
https://bibliotekanauki.pl/articles/260765.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Klimatologów Polskich
Tematy:
pionowe gradienty temperatury powietrza
pionowe gradienty wilgotności powietrza
stany równowagi termodynamicznej atmosfery
topoklimat
Kaffiøyra
Spitsbergen
lapse rate of air temperature and relative humidity
thermodynamic equilibrium state
topoclimate
Kaffioyra
Opis:
W artykule przedstawiono zróżnicowanie przestrzenne temperatury oraz wilgotności powietrza w rejonie Kaffiøyry (NW Spitsbergen) w sezonie letnim 2014 r. Na podstawie pomiarów na stanowiskach położonych na różnych wysokościach nad poziomem morza przeanalizowano zmiany temperatury i wilgotności powietrza w pionie, obliczono pionowe gradienty tych elementów. Uzyskane wyniki odniesiono do pionowych sondaży atmosfery wykonywanych w pobliskiej stacji w Ny Ålesund. Temperatura oraz wilgotność względna powietrza wykazują znaczne zróżnicowanie przestrzenne. Relacje między stanowiskami zmieniają się z dnia na dzień w zależności od rodzaju mas powietrza oraz zachmurzenia. Stwierdzono również zmienność pionowych gradientów temperatury i wilgotności względnej powietrza w cyklu dobowym.
This article presents the spatial diversity of temperature and relative humidity of the air in the area of Kaffiøyra (NW Spitsbergen). In the summer season of 2014 (21 July – 31 August), observations were carried out at 9 measurement points equipped with temperature and humidity recorders. The points were located in two terrain profiles: the mountains where the highest point was situated at 590 m a.s.l. in the Prins Heinrichfjella range and from the terminal moraines to the firn field (375 m a.s.l.) of the Waldemar Glacier. On the basis of the measurements taken at the sites situated at different absolute heights vertical changes in air temperature and humidity were analysed and lapse rate of air temperature gradients were determined. The results were referenced to vertical atmospheric soundings carried out at the nearby station in Ny Ålesund. The air over NW Spitsbergen (Ny Ålesund) demonstrated a mean vertical lapse rate of 0.61˚C/100 m at the atmospheric layer up to six or seven hundred metres. On most days normal stratification was observed, where temperature fell with height, on 3 days a ground-level air temperature inversion occurred and on 9 days a temperature inversion occurred in the free troposphere. In the area of Kaffiøyra, air temperature decreased with height from 5.5°C on the coast (KH) to 2.5°C at 590 m a.s.l. (PH2). On the Waldemar Glacier, the mean air temperature ranged from 5.0°C on the moraines (ATA) to 3.6°C on the firn field (LW2). The relationship between the sites changed on a daily basis, depending on the cloud amount, insolation and local circulation (e.g. connected with the influence of foenic wind). Averaged lapse rate in relation to the coast (KH) reached between 0.84°C/100 m (LW1-KH) and 0.39°C/100 m (KU-KH) or 0.40°C/100 m (ATA-KH). The mountain tops (PH1 and PH2) are also distinguished by their smaller lapse rate. An inversion in the vertical distribution of air temperature was also frequent and, for example, at the KT site it occurred at 33.9% of the hours and at 28.7% at ATA. On the Waldemar Glacier, inversion occurred at a frequency of 16.3% at its front (LW1) to 8.8% at its firn field (LW2). On the mountain tops, the inversion occurred at a frequency of 18% (PH2). The relative humidity of the air over Spitsbergen is high due to the prevalence of maritime air masses. According to the soundings conducted at Ny Ålesund, the humidity increased with the height, however in 13 cases a vertical inversion of relative humidity occurred – the overground air layers proved more saturated with water vapour. On Kaffiøyra, the average relative humidity of the air was 87.7% and increased up to approx. 500 m, above which it slightly dropped. This results from a high frequency of occurrence of Stratus clouds which do not reach the higher tops. The vertical gradients of relative humidity were diverse: at most sites, the relative humidity increased with the height, for example at the PH1 site, the gradient was 3.12%/100 m. A greater diversity of the relative humidity was typical of the hours around midday.
Źródło:
Problemy Klimatologii Polarnej; 2015, 25; 211-226
1234-0715
Pojawia się w:
Problemy Klimatologii Polarnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Warunki topoklimatyczne w sezonach letnich w rejonie Kaffioyry (NW Spitsbergen) w latach 2005-2009
Topoclimatic conditions in summer seasons in the Kaffioyra region (NW Spitsbergen) in the years 2005-2009
Autorzy:
Kejna, M.
Przybylak, R.
Araźny, A.
Jankowska, J.
Maszewski, R.
Wyszyński, P.
Powiązania:
https://bibliotekanauki.pl/articles/261009.pdf
Data publikacji:
2010
Wydawca:
Stowarzyszenie Klimatologów Polskich
Tematy:
Spitsbergen
Kaffioyra
topoklimat
temperatura powietrza
wilgotność względna
kierunek i prędkość wiatru
topoclimat
air temperature
relative humidity
wind direction and speed
Opis:
W artykule przedstawiono zróżnicowanie temperatury i wilgotności względnej powietrza oraz kierunku i prędkości wiatru w rejonie Kaffioyry (NW Spitsbergen) w sezonach letnich 2005-2009. Na podstawie pomiarów w 8 punktach stwierdzono znaczne różnice topoklimatyczne uwarunkowane rodzajem podłoża, wyso-kością nad poziom morza, odległością od morza, ekspozycją oraz lokalną cyrkulacją atmosferyczną. W rejonie Kaffioyry często występują sytuacje inwersyjne, związane nie tylko ze stratyfikacją termiczno-wilgotnościową napływających mas powietrza, ale również oddziaływaniem czynników lokalnych. Zróżnicowanie topoklima-tyczne zmienia się w zależności od stopnia zachmurzenia i pory doby oraz w czasie formowania się wiatrów lokalnych (wiatry lodowcowe i fenowe).
The paper presents the spatial differentiation of the meteorological conditions in the summer seasons in the Kaffiřyra in the period 2005-2009. The meteorological measurement points (4 automatic weather stations and 4 electronic devices measuring temperature and humidity, 2 m a.g.l.) were located on the Kaffiřyra Plain (KH) on the Waldemar Glacier area (ATA, LW1, LW2) and on the mountains: Kuven (KU), Grĺfjellet (GF) and Prins Heinrichfjella (PH1, PH2). The analysed five seasons had changeable weather conditions dependent on types of synoptic situations. The highest air temperatures were recorded on the coast (KH 5.8°C) and on the marginal zone of the Waldemar Glacier (ATA 5.1°C). On the glaciated area air temperature is decreasing with the altitude (LW2 2.9°C). The largest temperature lapse-rate is recorded at the transitional area between the glacier and its marginal zone. Growing altitude lowers air temperature on the mountain ridges (GF 4.0°C, PH2 3.6°C), but temperature inversions are recorded quite frequently in the region. Relative air humidity is high due to low temperature and large frequency of occurrence of maritime air masses. The highest mean relative air humidity was recorded on the coast (KH 88%) and on the firn field of the Waldemar Glacier (LW2 84%) as well as on the mountain ridges (PH2 92%). The course of the relative humidity is significantly influenced by foehn winds. Wind directions and velocity in the study area are strongly dependent on the synoptic situation and influence of local factors, mainly orography (foehn winds). Wind regime in the Waldemar Glacier significantly differs from that observed in the Kaffiřyra (here the tunnel effect is observed as a consequence of the narrow Forlandsundet, presences to the abovementioned plain), mainly due to katabatic winds occurrence.
Źródło:
Problemy Klimatologii Polarnej; 2010, 20; 63-81
1234-0715
Pojawia się w:
Problemy Klimatologii Polarnej
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

    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