GloRESatE:来自多个来源数据的全球降雨侵蚀性数据集
Subhankar Das1, Manoj Kumar Jain2, Vivek Gupta3
1Department of Hydrology, Indian Institute of Technology Roorkee, Roorkee, India.
Scientific data
|August 27, 2024
概括
通过将卫星和再分析数据与地面观测数据相结合,创建了一个新的全球降雨侵蚀性数据集. 这种高分辨率产品可以改善土壤侵蚀和水文评估.
科学领域:
- 水文学的水文学
- 环境科学 环境科学
- 地质科学是地球科学.
背景情况:
- 准确的降雨侵蚀性数据对于水文应用,如土壤侵蚀估计和水资源管理至关重要.
- 降雨侵蚀性的全球评估受到稀疏的标尺数据和卫星/再分析产品的不确定性所限制.
研究的目的:
- 开发一个新的,高分辨率的全球降雨侵蚀性数据集.
- 整合多来源降雨侵蚀性估计和地面观测.
- 为大规模应用克服现有数据集的局限性.
主要方法:
- 使用基于机器学习的高斯过程回归 (GPR) 模型.
- 卫星 (CMORPH,IMERG) 和重新分析 (ERA5-Land) 降雨侵蚀性估计的同化.
- 整合了大约6200个全球范围降雨侵蚀性观测和地气候共变量的整合.
主要成果:
- 一个统一的,高分辨率的 (0.1° × 0.1°) 平均年降雨侵蚀性产物被生成.
- 该数据集在与尺寸记录进行交叉验证时表现出强的表现.
- 相互比较证实了新数据集与现有全球产品的可靠性.
结论:
- 新的数据集为降雨侵蚀性提供了更好的全球视角.
- 它解决了当前降雨侵蚀性数据的可用性和准确性的关键限制.
- 促进了增强的大规模水文建模和土壤侵蚀评估.
更多相关视频
08:09Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management
Published on: September 12, 2017
11.8K
09:55Surface Renewal: An Advanced Micrometeorological Method for Measuring and Processing Field-Scale Energy Flux Density Data
Published on: December 12, 2013
8.6K
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
Precipitation Titration Curve: Analysis
1.1K
The precipitation titration curve demonstrates the change in concentration of one reactant with the volume of titrant added. During the titration of chloride ions with silver nitrate, the precipitation titration curve is divided into three regions: before, at, and after the equivalence point. Before the equivalence point, low redissolution of the sparingly soluble silver chloride precipitate gives a low silver ion concentration. However, in the second region, representing the equivalence point,...
1.1K
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
Precipitation Titration: Endpoint Detection Methods
1.7K
In argentometric precipitation titrations, endpoints can be detected visually by the Mohr, Volhard, and Fajans methods. In the Mohr method, adding a soluble chromate indicator gives an initial yellow color to the analyte solution. As the titrant is added, the first excess of silver ions forms a red silver chromate precipitate, marking the endpoint. The solution pH should be maintained at about 8 by adding solid CaCO3.
In the Volhard method, a standard excess of AgNO3 is first added to the...
In the Volhard method, a standard excess of AgNO3 is first added to the...
1.7K
Global Climate Change
24.3K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
24.3K
