Number of found documents: 506
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Kvantitativní analýza biofyzikálních parametrů zemědělských plodin s využitím multispektrálních dat Copernicus
Mišurec, J.; Lukeš, Petr; Tomíček, J.; Klem, Karel; Jakešová, L.
2018 - Czech
Keywords: agricultural crops; multispectral data; Copernicus Available at various institutes of the ASCR
Kvantitativní analýza biofyzikálních parametrů zemědělských plodin s využitím multispektrálních dat Copernicus

Mišurec, J.; Lukeš, Petr; Tomíček, J.; Klem, Karel; Jakešová, L.
Ústav výzkumu globální změny , 2018

JCU_1802
Fabiánek, Tomáš; Hanuš, Jan; Fajmon, Lukáš
2018 - Czech
Data Acquisition by FLIS (Flying Laboratory of Imaging Systems of Global change research institut CAS) over the localities of the villages of Krasíkovice and Kochánky was carried out on May 27. and 29., 2018. The reason for the acquisition of hyperspectral and LiDAR data was the verification of critical source sites in experimental catchments area IV. order or in parts with high concentrations of nitrates in water (including drainage). Akvizice dat Leteckou hyperspektrální laboratoří nad lokalitami v okolí obcí Krasíkovice a Kochánky proběhla 27. a 29. května 2018. Důvodem pořízení hyperspektrálních a LiDARových dat bylo ověření kritických zdrojových lokalit na experimentálních povodích IV. řádu nebo jejich částech s vysokými koncentracemi dusičnanů ve vodách (vč. drenáží). Keywords: hyperspectral data; lidar; flis Available at various institutes of the ASCR
JCU_1802

Data Acquisition by FLIS (Flying Laboratory of Imaging Systems of Global change research institut CAS) over the localities of the villages of Krasíkovice and Kochánky was carried out on May 27. and ...

Fabiánek, Tomáš; Hanuš, Jan; Fajmon, Lukáš
Ústav výzkumu globální změny , 2018

Výzkum vlivu SO2 a NOx na růst smrku
Hruška, Jakub; Oulehle, Filip; Kolář, Tomáš
2018 - Czech
Keywords: forest productivity; acidification of soils; biochemical modelling Available at various institutes of the ASCR
Výzkum vlivu SO2 a NOx na růst smrku

Hruška, Jakub; Oulehle, Filip; Kolář, Tomáš
Ústav výzkumu globální změny , 2018

Characterization of equivalent black carbon (ebc) at a regional backgound site in Central Europe: Variability and source identification
Mbengue, Saliou; Serfozo, Norbert; Holubová Šmejkalová, Adéla; Holoubek, Ivan
2018 - English
Black carbon (BC) is recognized to play an important role on adverse public health and in the Earth’s climate system (Bond et al., 2013). It is the most efficient light-absorbing aerosol species in the visible spectrum emitted as primary pollutant from a variety of combustion related sources. Although measurements of Equivalent Black Carbon (EBC) with multiple wavelength aethalometer have been used to provide insights regarding the influence of fossil fuel (traffic emissions) and wood smoke in ambient air (Sandradewi et al., 2008; Vaishya et al 2017), scarce studies have been reported in Eastern Central Europe using real-time EBC measurements.\nThis study focuses on the seasonal, diurnal and weekly trends of EBC at a regional background site in Central Europe during a 5-year measurement. Our aim is to identify the potential sources of EBC, especially the influence from fossil fuel and biomass burning. Keywords: Equivalent Black Carbon; 7-wavelength aethalometer; Ångström absorption exponent; Delta-C; BC variability and sources Available in digital repository of the ASCR
Characterization of equivalent black carbon (ebc) at a regional backgound site in Central Europe: Variability and source identification

Black carbon (BC) is recognized to play an important role on adverse public health and in the Earth’s climate system (Bond et al., 2013). It is the most efficient light-absorbing aerosol species in ...

Mbengue, Saliou; Serfozo, Norbert; Holubová Šmejkalová, Adéla; Holoubek, Ivan
Ústav výzkumu globální změny , 2018

Effects of urbanization on the landscape of a Modern City in Ghana: A case study of sunyani
Boateng, K. A.; Mensah, Caleb; Agyei, Thomas; Švik, Marian
2018 - English
According to the fifth assessment report of the Intergovernmental Panel on Climate Change, changes in land use through urbanization and agriculture are the key anthropogenic effects of climate change. Thus, the preservation of natural environment of urban areas is essential for conserving water and soil, while still adjusting the microclimatic variables (temperature, precipitation, relative humidity, etc.) and stabilizing the natural ecological system from destruction. It has been observed that most parts of city's green vegetation have been lost due to housing developments and commercial activities. This study was carried out to assess the effect of the change in land use on a modern city like Sunyani, by observing the significant changes in vegetation cover from LANDSAT TM imagery over a 31-year period (1986-2017). From the study, there was significant decline of vegetation cover from 1986 to 1999, and no significant change from 1999 to 2017. There were also significant changes in the built-up areas from 1986 to 1999 and no significant change from 1999 to 2017. Adoption of sustainable and environmentally friendly technologies that maintain open green vegetation is recommended for future city planning. Keywords: Climate change; Green vegetation; landsat; Open green spaces; Urbanization Fulltext is available at external website.
Effects of urbanization on the landscape of a Modern City in Ghana: A case study of sunyani

According to the fifth assessment report of the Intergovernmental Panel on Climate Change, changes in land use through urbanization and agriculture are the key anthropogenic effects of climate change. ...

Boateng, K. A.; Mensah, Caleb; Agyei, Thomas; Švik, Marian
Ústav výzkumu globální změny , 2018

HYPOS aerial hyperspectral campaign
Hanuš, Jan; Homolová, Lucie; Janoutová, Růžena
2018 - Czech
The ESA project HYPOS (Hyper-Spectral Analysis and Heterogeneous Surface Modeling) was solved by CzechGlobe together with three French partners (Magellium, CESBIO, IRSTEA) between 2016 and 2018. The task of the project was to create algorithms for estimating vegetation parameters from hyperspectral data and to define the most suitable spectral bands for estimation of parameters from multispectral data. ESA projekt HYPOS (Hyperspectral analysis and heterogeneous surface modelling) řešili pracovníci CzechGlobe společně se třemi francouzskými partnery (Magellium, CESBIO, IRSTEA) v letech 2016 až 2018. Úkolem projektu bylo vytvoření algoritmů pro odhad parametrů vegetace z hyperspektrálních dat a definování nejvhodnějších spektrálních pásem pro odhad parametrů z multispektrálních dat. Keywords: hyperspectral; hypos; esa Available at various institutes of the ASCR
HYPOS aerial hyperspectral campaign

The ESA project HYPOS (Hyper-Spectral Analysis and Heterogeneous Surface Modeling) was solved by CzechGlobe together with three French partners (Magellium, CESBIO, IRSTEA) between 2016 and 2018. The ...

Hanuš, Jan; Homolová, Lucie; Janoutová, Růžena
Ústav výzkumu globální změny , 2018

Souhrnná výzkumná zpráva MENDELU 1803
Hanuš, Jan; Fajmon, Lukáš
2018 - Czech
Airborne campaign Křtiny 2018 was focused on laser scanning and data processing Letecká kampaň Křtiny 2018 byla zaměřena na laserové skenování a zpracování dat pro školního lesní podnik Křtiny Keywords: laser scanning; processing Available at various institutes of the ASCR
Souhrnná výzkumná zpráva MENDELU 1803

Airborne campaign Křtiny 2018 was focused on laser scanning and data processing

Hanuš, Jan; Fajmon, Lukáš
Ústav výzkumu globální změny , 2018

Changes of microclimate in a sedge-grass marsh within the last 40 years
Dušek, Jiří; Stellner, Stanislav; Hudecová, S.
2018 - Czech
The average, maximum and minimum air temperatures have been gradually increasing since 1977 to 2017. The air temperature rise was not the same in all periods of the year. We found different increases for individual months. The daily mean air temperature rose significantly in the growing period (April-August). The precipitation characteristics have been changing in the sedge-grass marsh too. The observed trends differ among months in sign as well as in the magnitude, and they are consistent with the air temperature changes. We found that extreme precipitation seems to occur significantly more frequently in recent years compared to the period before 2000. Awareness of these changes is important for possible positive human intervention when a desirable wetland ekosystem function is threatened.\n Průměrná, maximální a minimální teplota vzduchu postupně vzrostla během let 1977 až 2017. Vzestup teplot není stejný během různých období roku. Zjistili jsme různý vzestup teplot vzduchu pro jednotlivé měsíce roku. Denní průměrná teplota průkazně vzrostla ve vegetačním období (duben - květen). Nejvyšší vzrůst maximální teploty vzduchu byl zaznamenán v měsíci dubnu. Charakter srážek se také během měřeného období změnil a je konsistentní s růstem teplot vzduchu. Pokles srážek lze pozorovat v teplejším dubnu. Frekvence extrémních srážek a s nimi související kolísání vodní hladiny je podstatně vyšší v posledních letech, než tomu bylo před rokem 2000. Podrobná znalost týkající se mikroklimatických změn v ostřicové louce jsou důležité z hlediska ekosystémových funkcí mokřadu v krajině.\n Keywords: temperature; precipitation; Carex; wetland; floods Available on request at various institutes of the ASCR
Changes of microclimate in a sedge-grass marsh within the last 40 years

The average, maximum and minimum air temperatures have been gradually increasing since 1977 to 2017. The air temperature rise was not the same in all periods of the year. We found different increases ...

Dušek, Jiří; Stellner, Stanislav; Hudecová, S.
Ústav výzkumu globální změny , 2018

Response of aerosol concentrations to the daily atmospheric boundary layer variability at the national atmospheric observatory Košetice
Holubová Šmejkalová, Adéla; Zíková, Naděžda; Ždímal, Vladimír; Komínková, Kateřina; Holoubek, Ivan
2018 - English
The atmospheric boundary layer (ABL) is the part of the troposphere directly influenced by the properties of the Earth’s surface. The ABL thickness reaches from hundreds of meters to a few kilometres. The daily cycle of the ABL height is primarily result of interaction between incoming solar radiation and Earth’s surface heat fluxes because a turbulent motion is dominant in this layer. Air pollutants are generally emitted from surface and their measured concentrations are also influenced by dilution of the atmosphere, or ABL thickness. This study is focused on the linkage between the diurnal ABL height evolution and aerosol particle number concentrations. Keywords: Atmospheric boundary layer; Aerosol total number concentrations; Polynomial regression Available in digital repository of the ASCR
Response of aerosol concentrations to the daily atmospheric boundary layer variability at the national atmospheric observatory Košetice

The atmospheric boundary layer (ABL) is the part of the troposphere directly influenced by the properties of the Earth’s surface. The ABL thickness reaches from hundreds of meters to a few kilometres. ...

Holubová Šmejkalová, Adéla; Zíková, Naděžda; Ždímal, Vladimír; Komínková, Kateřina; Holoubek, Ivan
Ústav výzkumu globální změny , 2018

Effects of urbanization on the landscape of a Modern City in Ghana: A case study of sunyani
Boateng, K. A.; Mensah, Caleb; Agyei, Thomas; Švik, Marian
2018 - English
Changes in land use through urbanization and agriculture are the key anthropogenic effects of climate change. Thus, the preservation of natural environment of urban areas is essential for conserving water and soil, while still adjusting the microclimatic variables (temperature, precipitation, relative humidity, etc.) and stabilizing the natural ecological system from destruction. It has been observed that most parts of city's green vegetation have been lost due to housing developments and commercial activities. This study was carried out to assess the effect of the change in land use on a modern city like Sunyani, by observing the significant changes in vegetation cover from LANDSAT TM imagery over a 31-year period (1986 – 2017). From the study, there was significant decline of vegetation cover from 1986 to 1999, and no significant change from 1999 to 2017. There were also significant changes in the built-up areas from 1986 to 1999 and no significant change from 1999 to 2017. Adoption of sustainable and environmentally friendly technologies that maintain open green vegetation is recommended for future city planning. Keywords: climate change; green vegetation; landsat; open green spaces; urbanization Fulltext is available at external website.
Effects of urbanization on the landscape of a Modern City in Ghana: A case study of sunyani

Changes in land use through urbanization and agriculture are the key anthropogenic effects of climate change. Thus, the preservation of natural environment of urban areas is essential for conserving ...

Boateng, K. A.; Mensah, Caleb; Agyei, Thomas; Švik, Marian
Ústav výzkumu globální změny , 2018

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