从大型水库中量化水蒸发:对水压地区的水资源管理的影响
Hannes Nevermann1, Milad Aminzadeh1, Kaveh Madani2
1Institute of Geo-Hydroinformatics, Hamburg University of Technology, 21073 Hamburg, Germany; United Nations University Hub on Engineering to Face Climate Change at the Hamburg University of Technology, United Nations University Institute for Water, Environment and Health (UNU-INWEH), Hamburg, Germany.
Environmental research
|August 30, 2024
概括
水库的蒸发性水损失很大,在缺水地区每年超过3200毫米. 这项研究量化了这些重大损失,影响了水资源预算和保护工作.
科学领域:
- 水文学的水文学
- 环境科学 环境科学
- 遥感 遥感 遥感 遥感
背景情况:
- 水库对于储水至关重要,尤其是在水资源稀缺的地区.
- 来自水库的蒸发损失往往被低估,影响了水预算的准确性.
- 了解这些损失对于有效的水资源管理至关重要.
研究的目的:
- 开发和应用一种机制框架,用于预测来自大水库的蒸发性水损失.
- 量化全球缺水地区主要大水库的蒸发性水损失.
- 评估蒸发性损失对水库储存效率和水的可用性的影响.
主要方法:
- 一种机械方法,将基于物理的建模与遥感数据相结合.
- 分析水库特征和气象数据.
- 从2000年到2020年,将该框架应用于水压地区的10个大型水水库.
主要成果:
- 在研究的水库中,每年蒸发速度超过3200毫米/年.
- 在10个水库的总年蒸发损失达到26.5公里3.5公里.
- 一个水库的蒸发损失高达储存能力的15.8%.
结论:
- 水库的大量蒸发性水损失对水的分配和保护构成了挑战.
- 精确量化蒸发对于干旱和半干旱地区的可持续水资源管理至关重要.
- 开发的框架为全球评估水库蒸发损失提供了一种可靠的方法.
相关概念视频
Responses to Drought and Flooding
10.6K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
10.6K
Adaptations that Reduce Water Loss
25.2K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
25.2K
The Water Cycle
24.3K
The Earth’s hydrosphere includes all of the areas where the storage and movement of water occurs. Since water is the basis of all living processes, the cycling of water is extremely important to ecosystem dynamics.
24.3K
Volatilization
374
Volatilization gravimetry is an analytical technique that measures the mass lost due to the volatilization of the substance. This technique is used to estimate the amount of volatile material in a sample. To perform this method, heat a known amount of the sample to a high temperature in a crucible or other suitable vessel. The volatile substance in the sample evaporates, and the vapor is completely expelled from the crucible either by heating the sample or bubbling a stream of inert gas through...
374
Conservation of Mass in Moving, Nondeforming Control Volume
1.1K
Stormwater detention basins are essential in managing runoff during heavy rainfall, particularly in urban areas where impervious surfaces increase the risk of flooding. Understanding the conservation of mass in these systems allows engineers to optimize basin performance, balancing inflow, outflow, and water storage.
In the context of a detention basin, the conservation of mass states that the total mass of water entering the basin must equal the mass leaving the basin plus any accumulation of...
In the context of a detention basin, the conservation of mass states that the total mass of water entering the basin must equal the mass leaving the basin plus any accumulation of...
1.1K
Design Example: Creating a Hydraulic Model of a Dam Spillway
146
Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.
146


