概括
这项研究评估了Argo浮动器的三个辐射辐射计,发现SIAT SLIM-I4表现最好. 温度校正对于暗信号至关重要,为可靠的海洋数据提出了新的性能标准.
科学领域:
- 海洋学 海洋学 海洋学
- 放射测量是一种放射测量.
- 仪器科学 仪器科学
背景情况:
- 阿戈浮标对于全球海洋数据收集至关重要.
- 准确的辐射测量对于生物地球化学Argo (BGC-Argo) 数据集至关重要.
- 现有的放射仪需要进行性能评估,以获得最佳的数据质量.
研究的目的:
- 为了评估三个四通道辐射辐射计 (Sea-Bird/Satlantic OCR-504,RBR quadrante,SIAT SLIM-I4) 的性能,用于Argo浮动应用.
- 为了评估放射性准确性,稳定性,暗信号稳定性和残留.
- 为了研究温度和老化对辐射计性能的影响.
主要方法:
- 进行了两个实验室实验来评估传感器性能.
- 评估了放射测量准确性和稳定性.
- 评估暗信号稳定性和残留性,包括温度影响和老化漂移.
主要成果:
- 所有传感器表现出类似的性能,但具有不同的特征.
- OCR-504:高辐射精度/稳定性,较低的暗信号稳定性.
- 四边形:非常好的暗信号稳定性,但残余量很大,射线性能较低.
- SLIM-I4:在放射测量和暗信号性能方面都表现出色.
- 在OCR-504中老化漂移只影响了暗信号的拦截,而不是斜率.
- 温度校正对于准确的暗信号解释至关重要.
结论:
- 在SIAT SLIM-I4展示了优越的整体性能.
- 建议所有射线计配备内部温度传感器,以提高准确度.
- 建议Argo浮式辐射辐射计的技术标准:精度 (±3%),稳定性 (1%辐射,0.1% PAR) 和暗信号稳定性 (>0.005μW/cm2/nm辐射,>0.03μmol/m2/s PAR).
- 这些标准将提高BGC-Argo数据的可靠性和互操作性.
更多相关视频
相关概念视频
Flame Photometry: Lab
362
In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...
362
Flame Photometry: Overview
804
Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...
804
Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview
555
Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
The ATR process begins by directing a beam...
The ATR process begins by directing a beam...
555
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
296
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
296
Precipitation Gravimetry
7.4K
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...
7.4K


