美国西南部的气候适应:为随机天气发生器设置的SWPar4.5参数
Andrew T Fullhart1, Shang Gao2, Wenting Wang3
1School of Natural Resources and the Environment, University of Arizona, Tucson, 85721, USA. afullhart@arizona.edu.
Scientific data
|November 19, 2025
概括
新的气候数据 (SWPar4.5) 通过提供高分辨率的点尺度气候时间序列来改善美国西南部的评估. 这些数据更好地捕捉了强烈的降雨动态,这对于了解当地环境影响至关重要.
科学领域:
- 环境科学环境科学
- 气候科学是气候科学.
- 水文学的水文学
背景情况:
- 美国西南部的气候评估是具有挑战性的,因为空间梯度和强烈的,短时间的降雨事件.
- 现有的格式气候数据 (例如,每天约4公里) 往往无法捕捉微细的降水动态.
- 点尺度数据对于特定地点的环境模型 (点,地块,田间和山坡尺度) 是必不可少的.
研究的目的:
- 开发一个框架 (西南参数集4.5或SWPar4.5) 来生成高分辨率 (~800m) 的历史和未来点级气候时间序列.
- 提高极端空间梯度和强度降雨的地区的气候评估准确度.
主要方法:
- SWPar4.5使用每月的气候基准来参数化一个随机天气发生器.
- 一种数据融合方法结合了两个网格式气候预测 (RCP4.5) 与不同的时空分辨率.
- 该方法产生每日时间序列与次日降水模式.
主要成果:
- SWPar4.5提供了以800米分辨率的点级气候时间序列.
- 生成的数据包括次日降水模式,揭示了当地降水强度的增加.
- 该框架为环境建模提供了有针对性的气候评估.
结论:
- SWPar4.5为美国西南部的详细气候评估提供了一个有价值的工具.
- 当地降水强度的增加对土壤侵蚀,排水和其他环境指标有重大影响.
- 高分辨率的点级气候数据对于准确的环境影响研究至关重要.
相关概念视频
Adaptations that Reduce Water Loss
27.9K
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.
27.9K
Precipitation Processes
4.7K
The experimental conditions in a gravimetric analysis should be optimized to maximize the particle size and purity of the obtained precipitate. Ideally, the concentration of the precipitating reagent should be low with effective stirring to maintain low relative supersaturation for the growth of large crystals. In homogeneous precipitation, the precipitant is slowly generated by a chemical reaction in the solution to avoid local reagent excesses. For example, urea decomposes gradually to...
4.7K
Global Climate Change
28.7K
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.
28.7K
Masonry in Cold and Hot Weather Conditions
322
In cold weather, masonry construction requires specific precautions to ensure mortar does not freeze before curing, as this can significantly weaken its strength and watertightness. Mortar temperature should be maintained between 60°F and 80°F to support proper hydration and curing. Below 40°F, mortar water must be heated, but should not exceed 120°F as high temperatures can reduce mortar's compressive and bond strength.
Other key practices include keeping masonry units...
Other key practices include keeping masonry units...
322
What is Climate?
20.4K
Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
20.4K
Precipitation and Co-precipitation
4.0K
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
4.0K


