نتایج جستجو برای: meteorological data sunshinehours

تعداد نتایج: 2421034  

2004
Charles Jones Natalie Mahowald Chao Luo

[1] This paper presents indirect observational evidence that desert dust can modulate the amplitude of easterly waves in the Atlantic Ocean. Twenty two years of NCEP/ NCAR reanalysis and dust from a global transport model are used to characterize the evolution of enhanced easterly waves. Lag composites of analysis increments (analysis minus first–guess) of geopotential height (700–hPa) anomalie...

2004
Jiang Zhao Chang-Tien Lu Yufeng Kou

Change detection is an important task in signal analysis, data mining, and image processing. In meteorology research, change is frequently associated with severe weather events or climate anomalies. Detecting change is crucial for weather and climate analysis. In this paper, we propose a wavelet based approach to analyze short term changes in the global meteorological data. We design a suite of...

2014
Wei Fang V. S. Sheng XueZhi Wen Wubin Pan

In the atmospheric science, the scale of meteorological data is massive and growing rapidly. K-means is a fast and available cluster algorithm which has been used in many fields. However, for the large-scale meteorological data, the traditional K-means algorithm is not capable enough to satisfy the actual application needs efficiently. This paper proposes an improved MK-means algorithm (MK-mean...

Journal: :Transactions, American Geophysical Union 1921

Journal: :The Scientific World Journal 2014

Journal: :Monthly Weather Review 1971

Journal: :Indian Journal of Science and Technology 2016

ژورنال: انرژی ایران 2018

The need for prediction and patterns of gas consumption especially in the cold seasons is essential for consumption management and policy planning decision making. In residential and commercial uses which account for the bulk of gas consumption in the country the effects of meteorological variables have the highest impact on consumption.  In the present research four variables include daily ave...

Journal: :journal of agricultural science and technology 2015
sh. gorjian b. ghobadian t. tavakkoli hashjin

solar radiation data play an important role in solar energy relevant researches. these data are not available for some locations due to the absence of the meteorological stations. therefore, solar radiation data have to be predicted by using solar radiation estimation models. this study presents an integrated artificial neural network (ann) approach for estimating solar radiation potential over...

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