This article analyses the improvement of cotton-spinning technologies in years after great inventions Hargreaves, Arkwright, and Crompton. While these ‘macro-inventions’ have attracted considerable historical attention, our understanding major changes types sizes spinning machines used UK between 1780s onset state-collected factory statistics 1830s is still largely based on experience high-prof...

Climate change is a topic of discussion worldwide including in Ethiopia. Ethiopia one the country’s most vulnerable to impacts climate variability and on agriculture. This study investigates were examine crop water requirements under changes scenarios for maize at Mirab-abaya woreda which situated 6.18◦ N latitude 37.77◦E longitude. Dynamically downscaled model outputs obtained from CORDEX-Afri...

We evaluated and compared the performance of simulated Angström-Prescott (AP) Hargreaves-Samani (HS) models on monthly annual timescales using generalized datasets covering entire West African region. The fitted AP model yielded more efficient parameters a = 0.366 b 0.459, whereas HS produced 0.216 coefficient based an timescale, which is suitable in region to coefficients recommended by Food A...

Persemaian Permanen Darmaga didirikan dalam rangka menyediakan kualitas bibit yang baik untuk rehabilitasi hutan dan lahan. Pada musim kemarau, penanaman tidak bisa dilakukan karena ketersediaan air terbatas, oleh sebab itu perlu alternatif penyediaan dapat disuplai secara kontinyu. Penelitian ini bertujuan merancang reservoir penampungan irigasi. Dalam perancangan, digunakan data iklim terdiri...

16 Solar radiation is an important climatic variable for assessing reference evapotranspiration 17 (E0), but it is seldom available in weather station records. Meteosat satellite images processed 18 with the Heliosat-2 method provide the HelioClim-1 database, which displays spatialized 19 solar radiation data at a daily time step for Europe and Africa. The aim of the present work 20 was to inve...

Solar radiation data are an important input for estimating evapotranspiration and modelling crop growth. Direct measurement of solar radiation is now carried out in most European countries, but the network of measuring stations is too sparse for reliable interpolation of measured values. Instead of direct measurements, solar radiation may be estimated from empirical solar radiation models that ...

Estimar a radiação solar é importante para vários segmentos da sociedade como agricultura, meteorologia e geração de energia elétrica (sistemas fotovoltaicos). Este artigo tem objetivo estimar Radiação Solar Global em quatro cidades do estado Pará - Brasil, por meio modelos estimativas, Hargreaves-Samani Bristow-Campbell, usando dados meteorológicos fornecidos pelas Estações Meteorológicas Auto...

Para um bom manejo de irrigação dos cultivos agrícolas a determinação da evapotranspiração é indispensável. Pensando nisso objetivou-se com este estudo comparar e avaliar o desempenho estimativa referência (Eto) pelos métodos Hargreaves-Samani, Makkink, Budyko, Turc, Jensen-Haise, Linacre, Kharrufa, Radiação FAO24 em relação ao método padrão Penman-Monteith/FAO no período seco chuvoso, Imperatr...

Utilization of solar energy for the fulfillment daily routine tasks has gained a lot interest in recent past. The complete utilization can be accomplished only if proper data is available particular site. measurement expensive and time consuming. Different empirical correlations are estimation radiations on In this research, monthly average radiation horizontal surface compared with measured as...