来自远程传感观测在南大平原上的对流参数
1Department of Physics, University of Maryland, Baltimore County (UMBC), Baltimore, MD 21250, USA.
Sensors (Basel, Switzerland)
|July 12, 2025
概括
这项研究表明,遥感可以使用连续数据准确测量大气不稳定性 (CAPE) 和抑制 (CIN). 像AERI这样的主动和被动传感器,在天气预报方面,比传统的每天两次的无线电探测器提供了更高的准确性.
科学领域:
- 大气科学 大气科学
- 遥感 遥感 遥感 遥感
- 气象学 天气学
背景情况:
- 流动可用潜在能量 (CAPE) 和流动抑制 (CIN) 对于估计大气不稳定性和流动潜力至关重要.
- 传统方法依赖于不经常的射电探测器发射和模型数据,限制时间分辨率.
- 持续的大气概况分析为操作预测提供了潜在的改进.
研究的目的:
- 评估被动和主动遥感系统在CAPE和CIN.推导中的性能.
- 为了比较远程传感衍生的CAPE/CIN值与现场射电探测测量.
- 评估不同类型传感器对CAPE和CIN计算准确性的影响.
主要方法:
- 使用大气发射辐射干扰仪 (AERI),微波辐射仪 (MWR),拉曼LiDAR和差分吸收LiDAR (DIAL) 的数据计算了CAPE和CIN.
- 通过将遥感衍生的值与射电探测器数据进行比较来评估性能.
- 来自活跃LiDAR系统的水蒸气概况被纳入评估其影响.
主要成果:
- 与无线电探测器相比,被动传感器显示AERI提供了比MWR更准确的CAPE和CIN.
- 积极的LiDAR系统与被动传感器相结合,提高了CAPE的准确性.
- 活跃LiDAR对CIN准确性的影响不如CAPE的影响.
结论:
- 遥感为不断推导大气不稳定性和抑制指标提供了一种可行的方法.
- 在CAPE/CIN估计中,AERI在被动传感器中表现出卓越的性能.
- 集成活跃的LiDAR数据增强了CAPE计算,为更好地了解水分传输和云发展铺平了道路.
关键词:
CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE was born in the late 19th century when they were born in the late 20th century when they were born in the late 20th century一百零五年 - - 一百零五年边界层是边界层的边界层.电流对流是指对流的对流.更多相关视频
12:26Integrating Remote Sensing with Species Distribution Models; Mapping Tamarisk Invasions Using the Software for Assisted Habitat Modeling SAHM
Published on: October 11, 2016
13.4K
10:28Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information
Published on: June 13, 2020
5.9K
相关概念视频
01:18Boundary Layer Characteristics
228
When a fluid encounters a solid surface, a boundary layer forms due to the interaction between the fluid's motion and the stationary surface. This phenomenon is characterized by a thin region adjacent to the surface where viscous forces dominate, influencing the fluid's velocity profile. The development of the boundary layer begins at the leading edge of the surface and evolves as the fluid moves downstream.As the fluid flows over the surface, friction between the fluid and the wall slows down...
228
01:20Conduction, Convection and Radiation: Problem Solving
1.4K
There are three methods by which heat transfer can take place: conduction, convection, and radiation. Each method has unique and interesting characteristics, but all three have two things in common: they transfer heat solely because of a temperature difference; and the greater the temperature difference, the faster the heat transfer.
In order to solve a problem related to heat transfer, first of all, the situation needs to be examined to determine the type of heat transfer involved. This could...
In order to solve a problem related to heat transfer, first of all, the situation needs to be examined to determine the type of heat transfer involved. This could...
1.4K
01:03Precipitation Gravimetry
7.6K
Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
7.6K
01:26Influence of Earth's Curvature and Atmospheric Refraction on Leveling
280
During leveling, the Earth's curvature and atmospheric refraction introduce deviations in the line of sight from a true horizontal reference. When the line of sight is leveled, it remains perpendicular to the plumb line only at a single point. Beyond this, it deviates due to the Earth’s curvature, represented by the correction C. For a sight distance D, the deviation can be derived using the relationship:This relationship shows that the deviation increases quadratically with distance.
280
01:28Magnetostatic Boundary Conditions
1.1K
An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
1.1K
01:12Precipitation Processes
604
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...
604