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Wyszukujesz frazę "Marfai, Muh Aris" wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
Spatiotemporal visibility characteristics impacted by forest and land fire over airports in Sumatera and Borneo Island, Indonesia
Autorzy:
Ismanto, Heri
Hartono, Hartono
Marfai, Muh Aris
Powiązania:
https://bibliotekanauki.pl/articles/1051207.pdf
Data publikacji:
2019-09-30
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
smoke
weather minima
visibility severity index
airport
Sumatra
Borneo
Opis:
Smoke can reduce the airport’s visibility and is related to the aviation safety and efficiency. Low visibility has potential safety hazard, such GA-152 crashed in 1997, and thus there is a need to find out the visibility characteristics in airports over Sumatra and Borneo Island caused by 2015 forest fire. This research aims to analyse the spatiotemporal visibility characteristics over airports in Sumatera and Borneo Island using flight rule visibility below minima criteria and hazard probability. The analysis of smoke was characterized using visibility severity index (VSI) that is a function of visibility severity class and its probability level. Spatiotemporal analysis of severity index combined with hotspot and wind numerical weather model indicates that the worst impact visibility occurred in September and October 2015. The lowest visibility was occured over night until afternoon time period. The spread of VSI impact has a tendency to northward and northwestward. The very high VSI levels occurred at airports such: WIJJ (Jambi), WIBB (Pekanbaru), WAGG (Palangkaraya) which were impacted up to 70% of flight operations time with IFR visibility below minima; while the WIOS (Susilo-Sintang), which operates only on VFR, experienced about 92% of VFR visibility below minima at smoke climax period.
Źródło:
Quaestiones Geographicae; 2019, 38, 3; 5-16
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparsion of TRMM Precipitation Satellite Data over Central Java Region – Indonesia
Autorzy:
Sekaranom, Andung Bayu
Nurjani, Emilya
Hadi, M. Pramono
Marfai, Muh Aris
Powiązania:
https://bibliotekanauki.pl/articles/1051514.pdf
Data publikacji:
2018-10-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
TRMM satellite precipitation
seasonal rainfall comparison
rain gauge precipitation
Central Java Region
Opis:
This research aims to compare precipitation data derived from satellite observation and ground measurements through a dense station network over Central Java, Indonesia. A precipitation estimate from the Tropical Rainfall Measuring Mission (TRMM) Multi-satellite Precipitation Analysis (TMPA) 3B42 Version 7 are compared with precipitation data from interpolated rain gauge stations. Correlation analysis, mean bias error (MBE), and root mean square error (RMSE) were utilized in the analysis for each thee-monthly seasonal statistics. The result shows that the 3B42 products often estimate lower rainfall than observed from weather stations in the peak of the rainy season (DJF). Further, it is revealed that the 3B42 product are less robust in estimating rainfall at high elevation, especially when humid environment, which is typical during the rainy season peak, are involved.
Źródło:
Quaestiones Geographicae; 2018, 37, 3; 97-114
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Food insecurity as a basis for drafting a Strategic Food Sovereignty Plan: A case study of the Kutai Kartanegara District, Indonesia
Autorzy:
Subejo, Subejo
Fidiashtry, Al
Aryudiawan, Candra
Suadi, Suadi
L, Awaluddin
Marfai, Muh Aris
Powiązania:
https://bibliotekanauki.pl/articles/1052646.pdf
Data publikacji:
2017-12-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
food security
food sovereignty
agriculture
Kutai Kartanegara
Indonesia
Opis:
This study aims to analyse food sovereignty strategies in an effort to eradicate poverty in a micro-scale region by strengthening its food security status. The research was conducted in the Kutai Kartanegara District East Kalimantan Province in Indonesia. Food insecurity status in the study area was determined based on nine food security indicators. The 237 villages in the Kutai Kartanegara District were ranked based on four classifications of vulnerability to food insecurity. The results showed that 3.80% of the villages were highly vulnerable, 5.06% were vulnerable, 8.86% were slightly vulnerable and 82.28% were food secure. While Kutai Kartanegara was a food secure district, in order to maintain its food security status and enhance the performance of the villages that are still vulnerable to food insecurity, local government, and related stakeholders must work together to develop strategies to improve agricultural productivity, increase the region’s human resources capability and strengthen its infrastructure so food can be more readily accessed.
Źródło:
Quaestiones Geographicae; 2017, 36, 4; 141-158
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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