Models to estimate river temperature. Example for Danube, at Oltenița in the context of climate change and anthropic impact
| Autor: | Ioana Opriș, Cristina Sorana Ionescu, Daniela-Elena Gogoașe-Nistoran |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010504 meteorology & atmospheric sciences
Global warming 0207 environmental engineering Climate change Context (language use) 02 engineering and technology Atmospheric sciences 01 natural sciences Environmental sciences Air temperature Weather data Environmental science GE1-350 Satellite Logistic function 020701 environmental engineering Anthropic principle 0105 earth and related environmental sciences |
| Zdroj: | E3S Web of Conferences, Vol 286, p 04003 (2021) |
| ISSN: | 2267-1242 |
| DOI: | 10.1051/e3sconf/202128604003 |
| Popis: | Daily variation of Danube River temperature measured at Oltenitț gauging station over 9 years (2008-2016) was analysed in comparison with the air temperature measured by satellite in the same location between 1979-2020. Air temperature shows a nearly 2°C increase over the 40-years period, which can be attributed to both climate warming and anthropic impact. Water temperature was modeled with a sinusoidal function and variation with discharge was discussed. Long-term trend of hourly surface air temperature variation was obtained from Open Weather data. Air - water temperature dependency was fitted with a logistic function with good approximation. Resulting correlations help predict water temperature as a function of satellite - measured air temperature. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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