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Title: Fluid dynamic design and experimental study of an aspirated temperature measurement platform used in climate observation

Abstract

Due to the solar radiation effect, current air temperature sensors inside a thermometer screen or radiation shield may produce measurement errors that are 0.8 °C or higher. To improve the observation accuracy, an aspirated temperature measurement platform is designed. A computational fluid dynamics (CFD) method is implemented to analyze and calculate the radiation error of the aspirated temperature measurement platform under various environmental conditions. Then, a radiation error correction equation is obtained by fitting the CFD results using a genetic algorithm (GA) method. In order to verify the performance of the temperature sensor, the aspirated temperature measurement platform, temperature sensors with a naturally ventilated radiation shield, and a thermometer screen are characterized in the same environment to conduct the intercomparison. The average radiation errors of the sensors in the naturally ventilated radiation shield and the thermometer screen are 0.44 °C and 0.25 °C, respectively. In contrast, the radiation error of the aspirated temperature measurement platform is as low as 0.05 °C. This aspirated temperature sensor allows the radiation error to be reduced by approximately 88.6% compared to the naturally ventilated radiation shield, and allows the error to be reduced by a percentage of approximately 80% compared to the thermometer screen. The mean absolute errormore » and root mean square error between the correction equation and experimental results are 0.032 °C and 0.036 °C, respectively, which demonstrates the accuracy of the CFD and GA methods proposed in this research.« less

Authors:
 [1];  [2];  [3];  [2];  [4];  [5]
  1. Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing 210044 (China)
  2. (China)
  3. Jiangsu Key Laboratory of Meteorological Observation and Information Processing, Nanjing 210044 (China)
  4. School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing 210044 (China)
  5. Jiangsu Meteorological Observation Center, Nanjing 210008 (China)
Publication Date:
OSTI Identifier:
22597653
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 87; Journal Issue: 8; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ACCURACY; AIR; ALGORITHMS; APPROXIMATIONS; COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; ERRORS; FLUID MECHANICS; SENSORS; SHIELDS; SOLAR RADIATION; TEMPERATURE MEASUREMENT; THERMOMETERS

Citation Formats

Yang, Jie, E-mail: yangjie396768@163.com, School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing 210044, Liu, Qingquan, Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology, Nanjing 210044, Dai, Wei, and Ding, Renhui. Fluid dynamic design and experimental study of an aspirated temperature measurement platform used in climate observation. United States: N. p., 2016. Web. doi:10.1063/1.4961645.
Yang, Jie, E-mail: yangjie396768@163.com, School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing 210044, Liu, Qingquan, Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology, Nanjing 210044, Dai, Wei, & Ding, Renhui. Fluid dynamic design and experimental study of an aspirated temperature measurement platform used in climate observation. United States. doi:10.1063/1.4961645.
Yang, Jie, E-mail: yangjie396768@163.com, School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing 210044, Liu, Qingquan, Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology, Nanjing 210044, Dai, Wei, and Ding, Renhui. 2016. "Fluid dynamic design and experimental study of an aspirated temperature measurement platform used in climate observation". United States. doi:10.1063/1.4961645.
@article{osti_22597653,
title = {Fluid dynamic design and experimental study of an aspirated temperature measurement platform used in climate observation},
author = {Yang, Jie, E-mail: yangjie396768@163.com and School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing 210044 and Liu, Qingquan and Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology, Nanjing 210044 and Dai, Wei and Ding, Renhui},
abstractNote = {Due to the solar radiation effect, current air temperature sensors inside a thermometer screen or radiation shield may produce measurement errors that are 0.8 °C or higher. To improve the observation accuracy, an aspirated temperature measurement platform is designed. A computational fluid dynamics (CFD) method is implemented to analyze and calculate the radiation error of the aspirated temperature measurement platform under various environmental conditions. Then, a radiation error correction equation is obtained by fitting the CFD results using a genetic algorithm (GA) method. In order to verify the performance of the temperature sensor, the aspirated temperature measurement platform, temperature sensors with a naturally ventilated radiation shield, and a thermometer screen are characterized in the same environment to conduct the intercomparison. The average radiation errors of the sensors in the naturally ventilated radiation shield and the thermometer screen are 0.44 °C and 0.25 °C, respectively. In contrast, the radiation error of the aspirated temperature measurement platform is as low as 0.05 °C. This aspirated temperature sensor allows the radiation error to be reduced by approximately 88.6% compared to the naturally ventilated radiation shield, and allows the error to be reduced by a percentage of approximately 80% compared to the thermometer screen. The mean absolute error and root mean square error between the correction equation and experimental results are 0.032 °C and 0.036 °C, respectively, which demonstrates the accuracy of the CFD and GA methods proposed in this research.},
doi = {10.1063/1.4961645},
journal = {Review of Scientific Instruments},
number = 8,
volume = 87,
place = {United States},
year = 2016,
month = 8
}