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Tytuł:
Daily oscillations of the air temperature in selected coniferous communities in the Borecka Forest
Autorzy:
Pietras, Katarzyna
Mikulska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/2030278.pdf
Data publikacji:
2008-06-01
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
air temperature
amplitude
maximal air temperature
minimal air temperature
local climate
Opis:
Two coniferous forest communities were selected for analysis: a marshy coniferous forest and a young spruce forest, both located in the Borecka Forest. Thermal conditions develop differently in each community during the spring, due to different tree crown closure, which influences the amount of direct solar radiation reaching the substratum. Soil humidity is another factor influencing the air temperature, since the capacity and thermal inertia of the soil depend on its humidity. The results of the study are compared with thermal conditions outside the forest.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2008, 13; 113-120
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the possibility of the estimation of bare soil temperature on the basis of air temperature measurement
Ocena mozliwości szacowania temperatury gleby nieporośniętej na podstawie pomiarów temperatury powietrza
Autorzy:
Michalska, B.
Nidzgorska-Lencewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/47297.pdf
Data publikacji:
2009
Wydawca:
Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydawnictwo PB
Tematy:
soil temperature
air temperature
temperature measurement
estimation
daily soil temperature
daily air temperature
regression equation
determination
Opis:
Basis of the study was made up of the results of automatic, hourly measurements of air temperature and bare soil temperature originating from the agrometeorological station in Lipnik (53o21’ N; 14o58’ E, 30 m AMSL) from the period of 2001-2005. Basing on the results of the linear regression analysis, relationships for particular months were determined between daily soil temperature at four depths and air temperature set in seven different combinations. It was stated that the highest possibilities of daily soil temperature prediction in profile to 50 cm are characteristic for the air temperature that is the average from 24 hourly measurements. Average absolute differences between the actual soil temperature and the one calculated from equations for this relation oscillate in the particular months between 1.3oC at the depth of 5 cm and 0.5oC at the depth of 50 cm. On average, the smallest differences apply to the warm half of the year and the depth of 50 cm. It was shown that significantly smaller possibilities of the estimation of daily soil temperature values are characteristic for daily air temperature amplitude.
Podstawę opracowania stanowiły wyniki automatycznych, cogodzinnych pomiarów temperatury powietrza oraz temperatury gleby nieporośniętej, pochodzące ze stacji agrometeorologicznej w Lipniku (53o21’ N; 14o58’ E, 30 m n.p.m.) z okresu 2001- -2005. W oparciu o wyniki analizy regresji liniowej oceniono związki dla poszczególnych miesięcy, pomiędzy dobową temperaturą gleby na 4 głębokościach a temperaturą powietrza ujętą w 7 różnych kombinacjach. Stwierdzono, że największymi możliwościami predykcji dobowej temperatury gleby w profilu do 50 cm odznacza się temperatura powietrza będącą średnią z 24 cogodzinnych pomiarów. Średnie bezwzględne różnice między rzeczywistą temperaturą gleby a obliczoną z równań dla tego związku wahają się w poszczególnych miesiącach od 1,3oC na głębokości 5 cm do 0,5oC na głębokości 50 cm. Przeciętnie najmniejsze różnice dotyczą ciepłej połowy roku i głębokości 50 cm. Wykazano, że zdecydowanie najmniejszymi możliwościami szacowania dobowych wartości temperatury gleby odznacza się dobowa amplituda temperatury powietrza.
Źródło:
Acta Scientiarum Polonorum. Agricultura; 2009, 08, 4
1644-0625
Pojawia się w:
Acta Scientiarum Polonorum. Agricultura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Extreme daily air temperatures in Poland (2000-2013)
Autorzy:
Szczepanek, R.
Powiązania:
https://bibliotekanauki.pl/articles/60217.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
extreme temperature
daily air temperature
Polska
2000-2013 period
maximum temperature
air temperature
minimum temperature
trend
Opis:
This work concentrates on the analysis of monthly trends of extremes daily temperatures, both minimum and maximum. Analysis was done for the period 2000–2013, based on freely available hourly temperature measurements from 60 Polish stations. Percentiles Tmin10 for minimum and Tmax90 for maximum daily temperature within each month were used as thresholds for selection of extreme temperature values. Count of days with extreme temperatures below/above threshold described every month. Significance of days count trend was analyzed with Mann–Kendall test at the significance level 0.05. For maximum temperatures, significant decreasing trend was found only for 3 station-months. For minimum temperature, 26 significant trends were found and presented in the form of map.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2014, IV/3
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Warunki termiczne a stężenie pyłu zawieszonego w powietrzu atmosferycznym zimą w wybranych miastach Polski
Thermal conditions and concentration of particulate matter in atmospheric air in winter in selected Polish cities
Autorzy:
Rawicki, K.
Powiązania:
https://bibliotekanauki.pl/articles/134837.pdf
Data publikacji:
2016
Wydawca:
ADVSEO
Tematy:
PM10
air temperature
air pollution
Opis:
The aim of the study was to assess the impact of thermal conditions on emission of PM10 in the atmosphere during the winter period in selected Polish cities. The basis of the work were average daily PM10 and air temperature measurement results, which were made in six cities during three of calendar winters (December-February) in 2011–2014. It has been shown that every decrease in temperature during the winter affects the increase in the concentration of PM10 in ambient air in most of the analyzed cities. The greatest role of air temperature in shaping emission of the fraction of particulate matter variability was found in a relatively cool winter 2011/2012, when the number of days with oversize levels of contamination ranged from 7 in Suwałki to even 46 in Nowy Sącz. The smallest impact of this weather element was found during a warm winter 2013/2014.
Źródło:
Technical Issues; 2016, 1; 59-65
2392-3954
Pojawia się w:
Technical Issues
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synoptic features of the severe winter 1986 at Arctowski Station, King George Island, West Antarctica
Autorzy:
Kowalski, Dominik
Wielbińska, Danuta
Powiązania:
https://bibliotekanauki.pl/articles/2053163.pdf
Data publikacji:
1989
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Antarctica
synoptic climatology
air temperature
Źródło:
Polish Polar Research; 1989, 10, 1; 57-71
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmienność temperatury powietrza w Arktyce Kanadyjskiej w okresie 1951-2005
Variability of air temperature in the Canadian Arctic from 1951 to 2005
Autorzy:
Przybylak, R.
Maszewski, R.
Powiązania:
https://bibliotekanauki.pl/articles/260769.pdf
Data publikacji:
2007
Wydawca:
Stowarzyszenie Klimatologów Polskich
Tematy:
temperatura powietrza
klasyfikacja termiczna
trendy temperatury powietrza
air temperature
Canadian Arctic
trends of air temperature
Opis:
W artykule przedstawiono szczegółową charakterystykę warunków termicznych na obszarze Arktyki Kanadyjskiej w okresie 1951-2005. Do tego celu wykorzystano średnie miesięczne, sezonowe i roczne wartości temperatury powietrza. Omówiono zarówno średnie rozkłady przestrzenne, jak też ich zmienność w badanym okresie czasu. Na podstawie uśrednionych obszarowo wartości temperatury powietrza dla całej Arktyki Kanadyjskiej, dla poszczególnych miesięcy i dla roku, ukazano ich zmienność w okresie 1951-2005 wykorzystując klasyfikacje termiczną zaproponowaną przez Miętusa i in. (2002).
This paper presents a detailed characterisation of thermal conditions in the Canadian Arctic from 1951 to 2005. For this purpose, monthly data (average, maximum and minimum temperatures) for 12 meteorological stations have been used (Table 1, Figure 1). Basic climatological characteristics have been calculated (Tables 3 and 4) and their spatial distributions are shown on maps (Figure 2). For seasonal and annual mean air temperature, the frequency of their occurrence in 1-degree intervals (Figure 4) as well as year-to-year changes (Table 4) have been calculated. For two time periods (1951-2005 and 1976-2005) air temperature trends for seasonal and annual means have also been presented (Table 5 and Figure 7). In both periods, areally averaged trends for the Canadian Arctic are positive. The greatest temperature trends were noted in autumn: 0.30°C/decade and 0.91°C/decade, respectively. From the period 1951-2005 to the period 1976-2005 a significant rise in trend values was observed, with the exception of winter. In the latter period, trends were statistically significant in summer, autumn and for the year as a whole. In the period 1951-2005, statistically significant trends occurred only in autumn (see Table 5). Thermal classifications of each month and year of the study period have been made according to the proposals of Miętus et al. (2002) (see Table 2 and Figure 8). The results of this classification show that after 1993 a significant increase in the number of months and years, classified as abnormally or extremely warm, was noted.
Źródło:
Problemy Klimatologii Polarnej; 2007, 17; 31-43
1234-0715
Pojawia się w:
Problemy Klimatologii Polarnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przebieg roczny temperatury powietrza na Antarktydzie
Annual course of air temperature on the Antarctic
Autorzy:
Kejna, M.
Powiązania:
https://bibliotekanauki.pl/articles/260895.pdf
Data publikacji:
2002
Wydawca:
Stowarzyszenie Klimatologów Polskich
Tematy:
Antarktyda
temperatury powietrza
Antarctic
air temperature
Opis:
On the Antarctic the annual course of air temperature shows a considerable spatial differentiation. Over the inland the course of temperature during the year is conditioned by insolation-radiational factors. On the coast the role of circulation factors connected with the advection of air masses from above the ocean or from the interior of the continent. In the paper mean monthly air temperatures from 56 stations making standard meteorological observations and from 38 automatic weather stations (AWS) have been used. On the Antarctic there types of annual air temperature courses can be distinguished: Oceanic - characterised by positive air temperatures in the summer season with the highest temperatures in February and by mild temperatures in the winter months (to -10°C). As a result of the ocean influence spring is considerable colder then autumn. The annual amplitudes are small (to 10-15°C). This type occurs on the western coast of the Antarctic Peninsula and on the subantarctic islands. Continental - with very low air temperatures. The warmest month is December with temperatures below -30°C in the interior of the continent. In winter the lowest mean monthly temperatures reach -70°C. The temperature frequently increases in the middle of winter; this phenomenon is called kernlose winter. The annual amplitude of air temperature is not high and in the interior its value reaches 30-35°C. The continental type includes the whole Antarctic except the narrow coastal belt. Coastal - characterised by air temperature around 0°C in the summer period. The warmest month is January. The lowest temperatures occur in January (-30° do -40°C). The growth of temperature in spring delays the heat uptake for the melting of sea ice. The annual amplitude of the air temperature is quite high and exceeds 20°C. Due to the influence of circulation factors on the Antarctic the annual course of the air temperature shows a large variability from year to year.
Źródło:
Problemy Klimatologii Polarnej; 2002, 12; 5-19
1234-0715
Pojawia się w:
Problemy Klimatologii Polarnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmiany trendu temperatury powietrza na Antarktydzie w latach 1958-2000
Change of air temperature range on the Antarctic in the years 1958-2000
Autorzy:
Kejna, M.
Powiązania:
https://bibliotekanauki.pl/articles/260927.pdf
Data publikacji:
2003
Wydawca:
Stowarzyszenie Klimatologów Polskich
Tematy:
temperatury powietrza
Antarktyda
air temperature
Antarctic
Opis:
The progressive increase in the concentration of greenhouse gases in the atmosphere in consequence leads to the rise of the global air temperature. According to the III Report of IPCC (2001) from 1880 the mean temperature on the Earth has grown by 0.6°C ą0.2°C. The reaction of polar regions to the greenhouse effect is unknown. The Antarctic climate shows a considerably greater variability in comparison with the lower latitudes of the Southern Hemisphere. This is conditioned by interactions between the atmospheric circulation, the ocean, and the cryosphere. According to the scenarios of global greenhouse effect the temperature at the polar regions should grow by 3°C in summer and 4-5°C in winter. However, these model researches are not confirmed in reality. This shows that our knowledge concerning the functioning of climate system of the polar regions is insufficient. In the paper we have used monthly mean air temperature values for 21 stations being in operation on the Antarctic in the years 1958-2000 and for 34 stations making observations in the years 1981-2000. After checking the homogeneity of the series by the Alexandersson?s (1986) test we have counted the trends of air temperature. The average trend for annual and seasonal values were expressed by temperature change per 10 years. In the years 1958-2000 on the Antarctic the trend of the mean annual values of the air temperature shows great spatial differentiation. These differences are connected with the radiation balance depending on the variability of cloudiness and the albedo of the surface, and on the transformation of pressure fields and changes of the atmospheric circulation. Statistically significant (on 0.95 significance level) air temperature increase occurred on the western coast of the Antarctic Peninsula (for example Faraday 0.67°C/10 years) and at the stations Belgrano and McMurdo. A negative air temperature trend occurred on the South Pole (-0.21°C/10 years) and on the Droning Maud Land. The temperature changes in the region of the Antarctic Peninsula are correlated with the extension and surface of sea ice, especially in winter. There are considerable differences of air temperature trends on the Antarctic between the periods 1958-1980 and 1981-2000. The period 1958-1980 is characterized by an increase of air temperature, especially on the shore of continent (Casey 0.84°C/10 years, Faraday 0.76°C/10 years, Halley 0.69°C/10 years). The interior of the continent is distinguished by stability of weather conditions. Year-to-year temperature changes are smaller, then at the coast (the trend at the Amundsen-Scott station average 0.26°C/10 years). During the last years (1981-2000) significant changes took place in the tendency of air temperature on the Antarctic. In many regions of the Antarctic cooling began, on the cost of East Antarctica the temperature decreases, on the coasts of the Wilkes Land (Casey -0.82°C/10 years) and the Weddell Sea (Halley -1.13?C/10 years, Larsen Ice -0.89°C/10 years), especially in the autumn-winter period. In the interior of the continent also lower and lower temperatures occurred (Amundsen-Scott -0.42°C/10 years, Dome C -0.71°C/10 years). The cooling can be observed in all seasons, but it is the greatest in summer and autumn, when the decrease of solar radiation was observed in connection with the growing cloudiness. Vostok situated at the highest parts of ice dome does not show statistically significant trend. An increase of the temperature was observed in the interior of West Antarctica (Byrd 0.37°C/10 years). The warming rate of the climate became weaker on the Antarctic Peninsula (Faraday 0.56°C/10 years). The largest temperature changes occurred in the autumn-winter season when in the Antarctic Peninsula region the temperature increased, while in the interior and at the coast of East Antarctica considerably fell. Climate changes during the last 20 years of the 20th century showed the weakening of the warming rate on the Antarctic Peninsula and distinct cooling on the East Antarctica. The lack of warming, or even cooling, on the East Antarctica, is favourable to maintain the present climate system in this region. The increasing air temperature on the West Antarctic, especially on the Antarctic Peninsula caused many natural consequences. The ablation of glaciers clearly intensified, deglaciation takes place, glaciers retreat. The environmental changes lead to disturbances in the functioning of the Antarctic ecosystem.
Źródło:
Problemy Klimatologii Polarnej; 2003, 13; 7-26
1234-0715
Pojawia się w:
Problemy Klimatologii Polarnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mean air temperatures at definite wind directions in Hornsund, Spitsbergen
Autorzy:
Wielbińska, Danuta
Skrzypczak, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/2053230.pdf
Data publikacji:
1988
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
wind direction
air temperature
Źródło:
Polish Polar Research; 1988, 9, 1; 105-119
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal Conditions Relative to Atmospheric Circulation in the Christmas Period in Poland
Autorzy:
Tomczyk, Arkadiusz M.
Powiązania:
https://bibliotekanauki.pl/articles/1052725.pdf
Data publikacji:
2016-03-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
climate change
air temperature
Christmas
Polska
Opis:
The main objective of this article was to determine thermal conditions in the Christmas period and the impact of atmospheric circulation on their formation. The article is based on data on the mean daily air temperature for 16 stations in Poland for the 1966-2014 multiannual period. In this period, no statistically significant changes of air temperature were observed, neither in December, nor the Christmas period. The occurrence of averagely warmer holidays was associated with the inflow of maritime polar air masses from the western sector, while colder holidays occurred with the inflow of continental polar air masses from the eastern sector.
Źródło:
Quaestiones Geographicae; 2016, 35, 1; 47-56
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristics of daily water temperature fluctuations in lake Kierskie (West Poland)
Autorzy:
Ptak, Mariusz
Sojka, Mariusz
Nowak, Bogumił
Powiązania:
https://bibliotekanauki.pl/articles/1051197.pdf
Data publikacji:
2019-09-30
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
lake
water temperature
air temperature
wind speed
Poznań
Opis:
The paper presents the dynamics of daily water temperature fluctuations in Lake Kierskie (West Poland) and determines the effect of air temperatures and wind speed on the variability of the parameter (water temperature). The analysis was based on hourly water temperature values from the period from May 2012 to January 2018. The data analysis permitted the description of the thermal regime of waters in the lake in the hourly cycle in reference to each month, and designation of months characterised by the highest and lowest stability of water temperatures. More than half of the analysed days was characterised by a change in water temperature not exceeding 1°C. The course of water temperature showed strongly positive correlations with air temperature, and weak correlations with wind speed. Water temperatures in the lake were correlated the strongest with air temperatures with a 24 h time step.
Źródło:
Quaestiones Geographicae; 2019, 38, 3; 41-49
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variations in weather on the East and West coasts of South Spitsbergen, Svalbard
Autorzy:
Maciejowski, Wojciech
Michniewski, Adam
Powiązania:
https://bibliotekanauki.pl/articles/2051847.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
air temperature
air humidity
foehn effects
Źródło:
Polish Polar Research; 2007, 2; 123-136
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Warm Waves in North-Western Spitsbergen
Autorzy:
Tomczyk, Arkadiusz Marek
Bednorz, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/2051145.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Svalbard
air temperature
warming
atmospheric circulation
Źródło:
Polish Polar Research; 2014, 3; 495-511
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena dokładności stosowanych metod obliczania średnich i ekstremalnych dobowych wartości temperatury powietrza w Arktyce Kanadyjskiej w XIX wieku
Estimation of accuracy of methods used calculation of mean and extreme daily air temperature values in the American Arctic in the 19th century
Autorzy:
Przybylak, R.
Vizi, Z.
Powiązania:
https://bibliotekanauki.pl/articles/260639.pdf
Data publikacji:
2005
Wydawca:
Stowarzyszenie Klimatologów Polskich
Tematy:
Arktyka Amerykańska
temperatury powietrza
średnia i ekstremalna amplituda dobowa
American Arctic
air temperature
mean and extreme daily air temperature
Opis:
W artykule omówiono różne metody obliczania średnich dobowych temperatury powietrza w Arktyce Amerykańskiej w XIX wieku. Oceniono dokładność stosowania tych metod biorąc pod uwagę jako średnią wzorcową tzw. średnią dobową rzeczywistą temperaturę powietrza obliczaną z 24 danych cogodzinnych. Drugim problemem badawczych, który podjęto w artykule, jest oszacowanie wielkości błędów jakie się popełnia wybierając z różnych zbiorów danych godzinowych (co 1-, 2-, 3-godziny itd.) najwyższe i najniższe dobowe temperatury powietrza. Jako wzorzec w tym przypadku wykorzystano wartości temperatur maksymalnych i minimalnych powietrza odczytane z termometrów ekstremalnych. Podobną analizę przeprowadzono także dla amplitudy dobowej temperatury powietrza. Dla wszystkich analizowanych parametrów termicznych i dla wszystkich metod obliczania/wyznaczania średnich dobowych temperatury powietrza i temperatur ekstremalnych obliczono m. in. przeciętne błędy estymacji ich średnich miesięcznych wartości.
Knowledge about the history of climate in the Arctic is more and more important and necessary, especially at present when we are approaching the Fourth International Polar Year 2007-2008. Generally speaking, the history of the climate in this area during the 20th century is quite well known. On the other hand, little is known about the climate in the 19th century. Moreover, while we have extensive meteorological data for this period, in particular for the American Arctic, these data have many errors and biases. One of the most important biases is connected with the way in which daily mean air temperature has been calcu-lated. In the American Arctic during the 19th century nine different methods (m1-m9) were used. For the analysis we also added two presently used methods (m10-m11). The main aim of this paper is to estimate the magnitudes of errors which are connected with the use of the above methods of calculating daily means. As a real daily mean, the mean calculated using hourly data (m1) was used. Because in the American Arctic the mean daily air temperature is still calculated using formulae m11, we also calculated differences relative to this mean. Another issue which we undertake in the present paper concerns the estimation of errors which are the result of the method which was adopted to determine extreme temperatures (Tmax and Tmin) and the diurnal temperature range (DTR). We checked this for ten different methods (nine used in the 19th century) which used hourly, 2-, 3-, and 4-hourly etc. readings of air temperature for the purposes of calculation (see formulas m1-m10 for more details). As a base, real data, temperature readings from the extreme thermometers were used. For the analysis, hourly temperature data as well as daily Tmax and Tmin for the period 1979-1983 were used for the four meteorological stations (Eureka, Resolute, Coral Harbour and Iqaluit) located in the American Arctic. The results of our investigations are presented in Tables 1-5. The main conclusions can be summarized as follows: 1. Mean monthly temperatures obtained using methods m2-m5 and m9 of daily mean temperature calculation do not need to be corrected. The greatest errors (overestimation by 0.5 to 1.5°C) were found for the methods m6-m8 (owing to a lack of measurements during the night hours). The method m11 also produces significant errors. Generally, using this method, the mean monthly temperatures are most often lower (by 0.2 to 0.7°C) in relation to all methods analysed in the present paper (see Tables 1 and 2). 2. In accordance with expectations, mean monthly Tmax and Tmin determined using different methods are lower/higher than the respective monthly means calculated based on the readings from the maximum and minimum thermometers. When we determine Tmax and Tmin using hourly, 2-, and 3-hourly data, their monthly means are lower/higher, though generally by no more than 1.0°C. Greater errors are more clearly seen in the cold half-year than in the warm half-year (see Tables 3 and 4), 3. Mean monthly DTR calculated using hourly, 2-, and 3-hourly temperature data are lower than real values by about 0.5 to 2.0°C. For other methods of DTR calculations their errors are significantly greater - lower by about 3.0 to 4.0°C (see Table 5).
Źródło:
Problemy Klimatologii Polarnej; 2005, 15; 27-39
1234-0715
Pojawia się w:
Problemy Klimatologii Polarnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Air temperature as a determinant of the forest line in the Tatras
Autorzy:
Baranowski, Jarosław
Kędzia, Stanisław
Powiązania:
https://bibliotekanauki.pl/articles/2040970.pdf
Data publikacji:
2021
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
forest line
air temperature
concave landforms
the Tatras
Opis:
The forest line has been widely studied by a number of scientists representing various research disciplines. Changes in its position are an indicator of climate change. However, despite numerous studies, it is not always known what has the greatest influence on the position of the forest line. In the Tatras, which are Alpine moun-tains, the position of the forest line in places not disturbed by human activity or slope processes mainly depends on the annual mean air temperature and the number of days with negative temperature and its value in the warm season. The most unfavourable thermal conditions are found at the bottoms of concave landforms, just above the forest line. This thermal barrier effectively limits the upward movement of the forest line, even if the average annual temperature increases. Small concave landforms may have a higher vertical temperature gradient and lower air temperature values at their bottoms than larger and higher-lying forms.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2021, 63, 3; 203-213
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 191

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