نتایج جستجو برای: data variability

تعداد نتایج: 2535942  

Journal: :Astronomy and Astrophysics 2023

Context. Gaia has been in operations since 2014. The third data release expands from the early (EDR3) 2020 by providing 34 months of multi-epoch observations that allowed us to probe, characterise and classify systematically celestial variable phenomena. Aims. We present a summary variability processing analysis photometric spectroscopic time series 1.8 billion sources done for DR3. Methods. us...

Journal: :فیزیک زمین و فضا 0
طیب رضیئی استادیار، پژوهشکده حفاظت خاک و آبخیزداری کشور، تهران، ایران ابراهیم فتاحی استادیار، گروه هواشناسی آب شناسی، پژوهشکده هواشناسی، تهران، ایران

drought monitoring, which is a crucial component of drought management, aims to provide information that enables and supports people and organizations to take actions to reduce potential drought-related impact and damage. we usually tend to focus on drought when it is occurring and to react when crises strike. however, recent experiences and developments on drought knowledge are encouraging soc...

Journal: :Monthly Notices of the Royal Astronomical Society 2003

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