一个半球外形状的自然通风温度观测仪器的设计
Zilan Ma1, Jie Yang1, Lixia Jiang1
1Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology, Nanjing University of Information Science and Technology, 210044 Nanjing, China.
一种新的半球仪器通过减少太阳热误差来提高大气温度测量准确度. 神经网络模型纠正错误,将测量偏差最小化到大约0.1°C.
科学领域:
- 气象学和大气科学 气象学和大气科学
- 仪器设计和工程 仪器设计和工程
背景情况:
- 准确的大气温度测量对于各种工业和研究至关重要.
- 在传统仪器中,太阳辐射会引入显著的温度误差 (≥1°C).
- 现有的仪器经常受到热污染和空气速度不足的影响.
研究的目的:
- 设计和优化一个新的半球外形仪器,用于增强大气温度测量.
- 使用神经网络开发一个强大的温度错误校正模型.
- 通过实地实验验证仪器的性能和校正模型.
主要方法:
- 计算流体动力学 (CFD) 用于仪器优化和错误量化.
- 开发一个多变量神经网络模型来纠正温度错误.
- 实地实验用于收集现实世界的性能数据.
主要成果:
- 仪器设计使用CFD模拟进行了优化.
- 神经网络模型在不同的条件下有效地纠正温度错误.
- 实地实验显示,校正前的平均误差为0.08°C,最大误差为0.25°C.
- 校正模型将测量误差降低到-0.05°C至0.04°C的范围内,达到~0.1°C的精度.
结论:
- 设计的半球仪器有效地减轻了太阳引起的温度误差.
- 基于神经网络的校正模型显著提高了测量准确性.
- 优化的仪器和校正系统提供可靠和精确的大气温度数据.
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