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Wyszukujesz frazę "rainfall" wg kryterium: Temat


Wyświetlanie 1-10 z 10
Tytuł:
The Influence of Rainfall Variability on Paddy Production: A Case Study in Batticalloa District
Autorzy:
Mathanraj, S.
Kaleel, M. I. M.
Powiązania:
https://bibliotekanauki.pl/articles/1189997.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Agriculture
Meteorology
Paddy production
Rainfall variability
Opis:
Climate change has become a major concern to human society because of its potentially deleterious impact worldwide. The degree to which rainfall amounts vary across an area or through time is an important characteristic of the climate of an area. This subject area in meteorology is called "rainfall variability”. Changes in amount, intensity and frequency affect the environment and society. The annual rainfall varies from 864 mm to 3081 mm (146 years data) distribution, which has sight variation throughout the district. The study purposes to examine the relationship between rainfall and paddy production. Samplings from 100 households have been gathered by questionnaire survey as primary data and the secondary data has been collected Meteorological Department, Department of Agriculture and published research reports. 146 years rainfall data and 34 years paddy cultivation data has been utilized to analyse the result. Accurate statistical methods have been used to find the variability that includes correlation and trend analysis of 3, 5 years moving average of standard deviation. As the result, the study finds that through the 3, 5 years moving average had shown high drier seasons of the years. The paddy production was very high in Maha season but this was very low in Yala season because of the rainfall variability. By the correlation between rainfall and paddy production, the significant value is positive in Maha season and this is negative in Yala season. However, both are having the different significance each other. Thus, even the rainfall was highly influenced to the higher production, this is impossible in each time. Therefore, the development of irrigation tanks and channels, rainwater harvesting and proper management would be supported to more production in Yala season.
Źródło:
World Scientific News; 2016, 52; 265-275
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Impacts of Irrigation System on Agriculture: A Study Based on Porativupattu ds Division
Autorzy:
Mathanraj, S.
Powiązania:
https://bibliotekanauki.pl/articles/1178797.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Agriculture
Irrigation
Paddy production
Rainfall
Vegetables
Opis:
Irrigation is the artificial application of water to the land or soil. It is used to assist in the growing of agricultural crops, maintenance of landscapes, and re-vegetation of disturbed soils in dry areas and during periods of inadequate rainfall. Paddy production is the main agriculture of this area, has good climate, well irrigation and soil structure for paddy production. Both temperature and rainfall are the main climatic factors that affected the paddy cultivation. The main objective of the study is to find out the agricultural activities especially paddy cultivation. The sampling method has been used to collect the primary data through the questionnaire survey from 100 households and secondary data has been gathered form District Secretariat, Irrigation Report, and published research reports. MS Excel was utilized for the study to examine the changes of paddy production and other agriculture due to the irrigation water. As the result, paddy production was very high in the Maha season but it was low in Yala season because of the less rainfall and irrigation process. In addition, the highland crops were cultivated around 396 hectare in this area. Whatever, when compere with vegetable production, this was very low and the vegetable production was very high. Thus, these area people cultivate different kind of crops for their economy but have the less production. Therefore, the improvement of irrigation and other water body help to make much production can be produced more in highland crops cultivation. Proper management and better agricultural practices cause to the high production in future.
Źródło:
World Scientific News; 2017, 90; 127-137
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of Changes in Temperature, Rainfall and Relative Humidity on Banana Production in Ondo State, Nigeria
Autorzy:
Salau, Opeyemi R.
Momoh, Marvelous
Olaleye, Oluwatosin A.
Owoeye, Rufus S.
Powiązania:
https://bibliotekanauki.pl/articles/1190205.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Banana
Plantain
Rainfall
Temperature
Agriculture
Relative Humidity
Opis:
The effects of climate change on agriculture may have strong impacts on the world’s food economy and are likely to threaten both the welfare of the world’s population and the economic development of the global society. Hence, the impacts of changes in important climate variables like temperature, rainfall and relative humidity on the production of a major food commodity called banana is investigated using the data obtained within 1998-2012 from Ondo State, Nigeria. The results suggest that excessive rainfall and extremely high temperature can reduce banana productivity while the production is also small when both rainfall and temperature are very low with poor humidity. On the average, the findings show that a mean temperature of about 26 °C and average rainfall of around 1891mm with relative humidity of approximately 77% will lead to good annual banana production above 61,000 tons in Ondo State. Since these climate variables will fluctuate under a future climate change condition, the coping strategies recommended for farmers in the area and in similar places might include planting of drought- and disease resistant banana types, monitoring of weather conditions, use of irrigation and chemicals. Improved storage facilities are also important while transportation of banana should be done under controlled conditions to avoid spoiling the quality.
Źródło:
World Scientific News; 2016, 44; 143-154
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Temperature and Rainfall Trend in Alaknanda Valley Srinagar Garhwal, Uttarakhand, India
Autorzy:
Negi, R. S.
Sagar Gautam, Alok Sagar
Singh, Santosh
Powiązania:
https://bibliotekanauki.pl/articles/1164126.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Climate Change
Meteorological data
Rainfall
Temperature
Trend
Opis:
The rainfall and temperatures are the most important parameters among the atmosphere as these parameters decide the ecological situation of the specific area, which affects the agricultural productivity. The temperature, and rainfall trends are analysed for meteorological data of Automatic Weather Station (AWS), was installed September 2009 with 22 meteorological parameters in the Department of Rural Technology, HNB Garhwal, University, Srinagar Garhwal, and Uttarakhand. In the study assess the seven-year change in temperature and rainfall has been examination by linear tread analysis. It is observed that in velley of Srinagar Garhwal, Uttarakhand, coefficient of variation for mean temperature for Srinagar Garhwal Valley is highest in the month of February and lowest in the month of August. This means that mean temperature is most stable in the month of August and total monthly rainfall observed highest in the month of November and minimum for the month of July. This shows that rainfall is more stable in the month of July and is more variable in the month of November for the Valley.
Źródło:
World Scientific News; 2018, 108; 207-214
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatial-Temporal Analysis of Rainfall West Java Indonesia Using Empirical Orthogonal Function based on Singular Value Decomposition
Autorzy:
Pribadi, Diantiny Mariam
Sumiati, Ira
Purwani, Sri
Powiązania:
https://bibliotekanauki.pl/articles/1031922.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Empirical Orthogonal Function
Rainfall
Singular Value Decomposition
Spatial-Temporal
Opis:
Rainfall is one of the climate variables that have a significant influence, especially in supporting the activities of various sectors in tropical countries. Climate change is causing rainfall variability in Indonesia. However, the analysis of climate variable patterns is difficult because of the formation of a large matrix. Empirical Orthogonal Function (EOF) analysis can be used to reduce the dimensions of large data by maintaining as much variation as possible from the original data set. The method used in this study is through the Singular Value Decomposition (SVD) approach. The analysis shows that 98.50% of the total rainfall variance can be represented by four EOF modes. Analysis of the spatial pattern of EOF1 shows that rainfall is below average, while the other EOF modes show variations in rainfall.
Źródło:
World Scientific News; 2020, 140; 113-126
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Changes in Temperature and Relative Humidity in Lagos State, Nigeria
Autorzy:
Salau, Opeyemi R.
Powiązania:
https://bibliotekanauki.pl/articles/1182945.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
temperature
relative humidity
rainfall
global warming
heat stroke
lagos
Opis:
The variability in the temperature and Relative Humidity (RH) observed within Lagos State, a coastal region in Nigeria, is investigated using data from Nigeria Meteorological Agency (NIMET) for 1980 to 2010. The results reveal an annual mean value of 27.20°C and 83.01% for the temperature and RH respectively and an increasing trend in RH over the study period while such rising trend in the mean temperature is reversed from 2005 to 2010. The findings show an inverse relationship between the temperature and RH while it further indicates that low temperature is associated with increased rainfall under the accompanying cloudy condition and vice versa. These observations are supported by the strong correlation coefficients between the RH and the rainfall (0.72) and that between the RH and the temperature (-0.95) while -0.59 is obtained between the rainfall and the corresponding temperature. The correlations show that the impacts of the precipitation on RH are stronger than the effects it has on the temperature while both temperature and RH strongly depends on each other. Hence, under a future global warming, extremely warm atmospheric condition characterized by high RH in the coastal region could cause heat stroke, discomfort and health problems among the inhabitants. However, the area becomes conducive and attractive to tourists under moderate RH and good temperature.
Źródło:
World Scientific News; 2016, 49, 2; 295-306
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Links between Variations in Climate Patterns and ITCZ Position over Nigeria
Autorzy:
Opeyemi, Rabiu Salau
Powiązania:
https://bibliotekanauki.pl/articles/1179010.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Climate
Flood
ITCZ
Rainfall
Solar Radiation
Temperature
Wind Speed
Opis:
The analysis of the observed 30 years data that include the monthly precipitation, wind speed and solar radiation from Maiduguri, Abuja, Ikeja and Port Harcourt is done to estimate the approximate shift in the Inter-Tropical Convergence Zone (ITCZ) mean position over Nigeria. The data are separated into three decades (1981-1990, 1991-2000 and 2001-2010) and their monthly mean values are compared with each other and with the corresponding magnitudes over the whole period (1981-2010). The results indicate that the overall precipitation increases southward across the country while the annual mean intensity rises over the decades in all the selected locations. Using the extreme decades, the magnitude of the rainfall in 2001-2010 is higher than the corresponding values in 1981-1990 by 20.84 mm, 9.87 mm, 18.40 mm and 6.89 mm in Maiduguri, Abuja, Ikeja (Lagos) and Port Harcourt respectively. Further investigation in all the locations showed periods of elevated monthly rainfall in the recent decades than other periods; the magnitudes compared to 1981-1990 are between 48.6mm-78.4mm which are much higher than the annual mean intensities while few months with very low rainfall are observed in Abuja and Port Harcourt. As expected, reverse pattern is seen in the wind speed which is generally lower in 2001-2010 than in 1981-1990. The rising magnitude of the precipitation over the decades imply that the ITCZ must have been shifting slightly over the periods to a more northern extreme in 2001-2010, causing northward spread of the rainfall which raises the overall intensity of the rainfall across Nigeria. A persistent northward shift in the ITCZ position with increasing magnitude of the associated rainfall could raise the current severity of soil erosion, frequency of flooding that might cause severe damages and paralyze businesses in Nigeria under such a future climate change. Hence, availability of data with advance technology for studying fluctuations in the ITCZ position might improve weather forecast that could favour farm yield and save lives and properties as climate changes in the future.
Źródło:
World Scientific News; 2017, 87; 191-204
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Regional Distribution of Malaria in Ekiti State, Nigeria
Autorzy:
Salau, Opeyemi R.
Ewumi, Taofeek
Owolabi, Bunmi E.
Ajayi, Gabriel O.
Ajayi, Oluwaseun E.
Powiązania:
https://bibliotekanauki.pl/articles/1192596.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Malaria
Mosquito
Rainfall
Temperature
Ekiti State
Ado – Ekiti
Population
Plasmodium
Opis:
The impacts of fluctuations in weather and climate on malaria prevalence under a future climate change have been an issue of major interest because the disease is a public health problem. Thus, this study investigates the impacts of rainfall on the regional variations of malaria in Ekiti State, Nigeria using 2001-2011 data. The data are for the Central, Eastern, Northern, Western and Southern parts of Ekiti State which are represented by Ado, Ekiti East, Oye, Ekiti South West and Ijero LGAs respectively based on the available data. The results indicate that the total infections over the study period in Ado, Ekiti East, Oye, Ekiti South West and Ijero LGAs are 207033, 67890, 80827, 55986 and 87521 cases respectively. The malaria disease is most rampant among the youths in all the LGAs while the observed cases within the female populations are also slightly higher than the mean infections in the male group. Similarly, an increase in rainfall intensity will lead to corresponding rise in the malaria cases while the spread of the disease seems to also depend on population distribution with the highest seen in the highly populated Ado LGA and among the youths that has the most population in the age groups. However, the disease could be reduced through improved personal hygiene, good drainage system, sleeping under insecticide treated mosquito nets, spraying of insecticides and access to good and affordable medical services. These findings might be used in establishing good immunization system for the vulnerable children and other age groups so as to curb the spread of the disease.
Źródło:
World Scientific News; 2016, 55; 89-100
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Municipal waste market in Poland - analysis of the type of collected waste and liquid waste
Autorzy:
Brzeszczak, Adam
Powiązania:
https://bibliotekanauki.pl/articles/1030601.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
liquid waste
municipal waste
rainfall market in Poland
waste management
Opis:
The subject of the following study is the municipal waste market in Poland. The theoretical part of the study provides an overview of the definition of waste, as well as listing its types. In the empirical part, an analysis of the type of municipal waste and liquid waste was carried out.
Źródło:
World Scientific News; 2020, 144; 313-325
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trend analysis of rainfall in Satluj River Basin, Himachal Pradesh, India
Autorzy:
Kumar, Sandeep
Gill, G. S.
Santosh, Santosh
Powiązania:
https://bibliotekanauki.pl/articles/1193980.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Himachal Pradesh
Mann-Kendall test
Rainfall
Regression
Satluj River Basin
Trend analysis
Opis:
attention recently, especially in connection with climate change. The changing pattern of rainfall deserves urgent and systematic attention for planning, development, utilisation and management of water resources. The daily data on variable were converted to monthly and then computed to seasonal and annual series. Annual rainfall (mm/yr) was calculated as the sum of monthly values. The missing values in the data were computed by using average method. The records of rainfall were subjected to trend analysis by using both non-parametric (Mann-Kendall test) and parametric (linear regression analysis) procedures. For better understanding of the observed trends, data were computed into standardised precipitation indices (SPI). These standardised data series were plotted against time and the linear trends observed were represented graphically. Trend analysis results of rainfall show that out of 15 annual trends 6 (40%) are increasing and 9 (60%) are decreasing in nature where 1 (6.6%) is statistically significant (increasing) and 2 (13.3%) are statistically significant (decreasing) at 95% confidence level. Similarly, the changes were investigated for the four seasons: winter (December-March), pre-monsoon (April-June), monsoon (July-September) and post-monsoon (October-November). The analysis of rainfall, annual as well as seasonal, of different gauge stations in Satluj River Basin showed a large variability in the trends and magnitudes from 1984 to 2010. The rainfall shows great temporal and spatial variations, unequal seasonal distribution with frequent departures from normal. Majority of gauge stations have experienced decreasing trends, both on seasonal and annual scales. Some were statistically significant at 95% confidence level. The sensitivity of rainfall variations provides important insight regarding the responses and vulnerability of different areas to climate change. It will further strengthen the formulation of future strategy for management of water resources.
Źródło:
World Scientific News; 2015, 14; 1-55
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-10 z 10

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