Türk Uzaktan Algılama ve CBS Dergisi

Yazarlar: Kazım KABA, Derya ÖZTÜRK ÇETNİ, Mustafa KANDIRMAZ

Konular:Uzaktan Algılama

Anahtar Kelimeler:Solar radiation,DIDSSF,Meteosat,Turkey,Validation

Özet: The solar radiation that reaches to the surface of the Earth is of great importance for many applications such as climate, agriculture, hydrology and energy. Having knowledge on the temporal and spatial distribution of energy values is a worldwide need for the studies on these topics. Measurement of the solar radiation is generally carried out in a pointwise manner in meteorological stations. Recent studies show that solar radiation over large areas can be estimated successfully using satellite images. The Meteosat satellites record images of Europe and Africa, covering also Turkey. Using these records, the LSA SAF unit predicts various parameters that belongs to Earth. One of these parameters is the DIDSSF (daily downward surface short-wave flux), which predicts the daily short-wave radiation reaching to the Earth surface. This study aimed to evaluate the accuracy of the DIDSSF estimation for Turkey by comparing it against terrestrial measurements. The accuracy of the DIDSSF product was tested through the use of global solar radiation values measured at 46 MGM stations which were homogeneously distributed over the whole country as much as possible. Examination of the stations one by one revealed that the determination coefficient R2 varied between 0.7129 and 0.9585. The average R2 value obtained from 46 stations was found to be 0.9058.

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