调查50种基于温度的模型,用于估计半干旱地区的潜在蒸发透气 (PET)
J Ramachandran1, A Anto Rashwin2, K Arunadevi3
1Department of Soil and Water Conservation Engineering, Agricultural Engineering College and Research Institute, Tamil Nadu Agricultural University (TNAU), Coimbatore, Tamil Nadu, 641003, India. eeesurya.tnau@gmail.com.
Scientific reports
|February 9, 2026
概括
这项研究确定了准确的,简单的模型,用于估计在半干旱地区的潜在蒸发透气 (PET). 阿尔托夫,佩雷拉和萨马尼模型为灌规划和水资源管理提供了可靠的替代方案.
科学领域:
- 水文学的水文学
- 农业科学 农业科学
- 环境科学 环境科学
背景情况:
- 准确估计潜在的蒸发转化 (PET) 对半干旱地区的水资源管理至关重要.
- 现有的实证模型在准确性和数据要求上有所不同.
- 粮农组织56的Penman-Monteith (PM) 模型是PET估计的广泛接受的基准.
研究的目的:
- 用每日气象数据评估50个经验性PET估计模型的性能.
- 将这些模型与FAO56 PM基准进行比较.
- 为数据稀缺的半干旱地区确定准确且具有成本效益的PET估计模型.
主要方法:
- 利用来自印度泰米尔纳德州一个半干旱地区的每日气象数据.
- 将50个基于温度和湿度的经验模型与FAO56 PM模型进行了比较.
- 使用的统计指数包括R2,平均绝对误差,标准误差估计和绩效评估的长期平均比率 (rt).
主要成果:
- 阿尔托夫,佩雷拉和萨马尼模型与FAO56 PM模型有很强的一致性.
- 阿尔特霍夫等人. 阿尔特霍夫等人. 该模型根据标准化绩效指数获得了最高的排名.
- 这些模型为PET估计提供了准确性和简单性之间的良好平衡.
结论:
- 精选的实证模型为 PET 估计在数据有限的半干旱环境中提供了可行的,具有成本效益的替代方案.
- 这些发现支持改善灌规划和水资源管理.
- 未来的研究应该考虑辐射和风数据,以提高PET模型的准确性.
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