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DOI | 10.1002/joc.5453 |
Aspirated and non-aspirated automatic weather station Stevenson screen intercomparison | |
Hoover, J.; Yao, L. | |
2018-05-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
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ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2018 |
卷号 | 38期号:6页码:2686-2700 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada |
英文摘要 | In this study six wooden Stevenson screen configurations (five aspirated, one non-aspirated) were evaluated at the Centre for Atmospheric Research Experiments in Egbert, Ontario, Canada. The field experiment was performed over a 1-year period to evaluate aspirated and non-aspirated Stevenson screen configurations used at the Meteorological Service of Canada's Automated Weather Stations. The results show the non-aspirated screen is warmer than the aspirated screen duct location by 0.11 degrees C on average with a significant increase in the maximum daily temperature of 0.22 degrees C due to radiant heating effects. Temperature differences up to 2.1 degrees C were observed between the aspirated and non-aspirated screens with a mean increase of 0.46 degrees C following 30-min periods of mean global radiation greater than 200W/m(2) and mean wind speed less than 2 m/s. Temperature differences between the two screens are more variable with standard deviations up to 0.3 degrees C for wind speeds below 2 m/s. The maximum daily temperature for the historic minimum and maximum thermometer locations and upper regions of the aspirated screen is also found to be significantly warmer during radiant heating conditions. The three locations within the aspiration duct provided very similar results with mean differences of -0.02 and -0.01 degrees C below the probe uncertainty. The aspirated Stevenson screen with motor off produced low overall bias with lower maximum daily temperatures and higher minimum daily temperatures compared to the aspirated screen. Comparison between the historic wooden frame and new aluminium mounting is not significant with the wooden frame cooler by 0.02 degrees C overall. Differences between the new aluminium and new plastic ducts showed similar results of 0.02 and 0.01 degrees C overall. The aspirated Stevenson screen configuration is recommended at new Automatic Weather Station installations where AC power is available. |
英文关键词 | air temperature aspirated automatic weather station environment and climate change Canada Meteorological Service of Canada non-aspirated Stevenson screen thermometer screens |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000437834500006 |
WOS关键词 | TEMPERATURE RADIATION SHIELDS ; AIR-TEMPERATURE ; NETHERLANDS ; BILT ; ASOS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/36712 |
专题 | 气候变化 |
作者单位 | Environm Canada, Toronto, ON, Canada |
推荐引用方式 GB/T 7714 | Hoover, J.,Yao, L.. Aspirated and non-aspirated automatic weather station Stevenson screen intercomparison[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38(6):2686-2700. |
APA | Hoover, J.,&Yao, L..(2018).Aspirated and non-aspirated automatic weather station Stevenson screen intercomparison.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(6),2686-2700. |
MLA | Hoover, J.,et al."Aspirated and non-aspirated automatic weather station Stevenson screen intercomparison".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.6(2018):2686-2700. |
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