Details

Autor(en) / Beteiligte

• Maleki, Saeid
• Mohajeri, Seyed Hossein
• Mehraein, Mojtaba
• Sharafati, Ahmad

Titel

Lake evaporation in arid zones: Leveraging Landsat 8's water temperature retrieval and key meteorological drivers

Ist Teil von

• Journal of environmental management, 2024-03, Vol.355, p.120450-120450, Article 120450

Ort / Verlag

England: Elsevier Ltd

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• This study assessed the accuracy of various methods for estimating lake evaporation in arid, high-wind environments, leveraging water temperature data from Landsat 8. The evaluation involved four estimation techniques: the FAO 56 radiation-based equation, the Schendel temperature-based equation, the Brockamp & Wenner mass transfer-based equation, and the VUV regression-based equation. The study focused on the Chah Nimeh Reservoirs (CNRs) in the arid region of Iran due to its distinctive wind patterns and dry climate. Our analysis revealed that the Split-window algorithm was the most precise for satellite-based water surface temperature measurement, with an R2 value of 0.86 and an RMSE of 1.61 °C. Among evaporation estimation methods, the FAO 56 stood out, demonstrating an R2 value of 0.76 and an RMSE of 4.36 mm/day in comparison to pan evaporation measurements. A subsequent sensitivity analysis using an artificial neural network (ANN) identified net radiation as the predominant factor influencing lake evaporation, especially during both wind and no-wind conditions. This research underscores the importance of incorporating net radiation, water surface temperature, and wind speed parameters in evaporation evaluations, providing pivotal insights for effective water management in arid, windy regions. [Display omitted] •Landsat 8's Efficiency: Split-window algorithm yields R2 of 0.86 in temperature retrieval.•FAO 56's Superiority: Best for evaporation with R2 of 0.76 compared to pan evaporation.•Net Radiation's Role: Identified as dominant factor affecting lake evaporation.•Wind Dynamics Impact: Levar winds amplify evaporation in Chah Nimeh Reservoirs.•Water Management Implications: Study informs sustainable strategies in arid zones.